duplicate values - Page 814

A pseudo-listener for AlwaysOn Availability Groups for SQL Server virtual machines running in Azure

- by MikeD

I am involved in a project that is implementing SharePoint 2013 on virtual machines hosted in Azure. The back end data tier consists of two Azure VMs running SQL Server 2012, with the SharePoint databases contained in an AlwaysOn Availability Group. I used this "Tutorial: AlwaysOn Availability Groups in Windows Azure (GUI)" to help me implement this setup.Because Azure DHCP will not assign multiple unique IP addresses to the same VM, having an AG Listener in Azure is not currently supported. I wanted to figure out another mechanism to support a "pseudo listener" of some sort. First, I created a CNAME (alias) record in the DNS zone with a short TTL (time to live) of 5 minutes (I may yet make this even shorter). The record represents a logical name (let's say the alias is SPSQL) of the server to connect to for the databases in the availability group (AG). When Server1 was hosting the primary replica of the AG, I would set the CNAME of SPSQL to be SERVER1. When the AG failed over to Server1, I wanted to set the CNAME to SERVER2. Seemed simple enough.(It's important to point out that the connection strings for my SharePoint services should use the CNAME alias, and not the actual server name. This whole thing falls apart otherwise.)To accomplish this, I created identical SQL Agent Jobs on Server1 and Server2, with two steps:1. Step 1: Determine if this server is hosting the primary replica.This is a TSQL step using this script:declare @agName sysname = 'AGTest'set nocount on declare @primaryReplica sysnameselect @primaryReplica = agState.primary_replicafrom sys.dm_hadr_availability_group_states agState join sys.availability_groups ag on agstate.group_id = ag.group_id where ag.name = @AGname if not exists( select * from sys.dm_hadr_availability_group_states agState join sys.availability_groups ag on agstate.group_id = ag.group_id where @@Servername = agstate.primary_replica and ag.name = @AGname)begin raiserror ('Primary replica of %s is not hosted on %s, it is hosted on %s',17,1,@Agname, @@Servername, @primaryReplica) endThis script determines if the primary replica value of the AG group is the same as the server name, which means that our server is hosting the current AG (you should update the value of the @AgName variable to the name of your AG). If this is true, I want the DNS alias to point to this server. If the current server is not hosting the primary replica, then the script raises an error. Also, if the script can't be executed because it cannot connect to the server, that also will generate an error. For the job step settings, I set the On Failure option to "Quit the job reporting success". The next step in the job will set the DNS alias to this server name, and I only want to do that if I know that it is the current primary replica, otherwise I don't want to do anything. I also include the step output in the job history so I can see the error message.Job Step 2: Update the CNAME entry in DNS with this server's name.I used a PowerShell script to accomplish this:$cname = "SPSQL.contoso.com"$query = "Select * from MicrosoftDNS_CNAMEType"$dns1 = "dc01.contoso.com"$dns2 = "dc02.contoso.com"if ((Test-Connection -ComputerName $dns1 -Count 1 -Quiet) -eq $true){ $dnsServer = $dns1}elseif ((Test-Connection -ComputerName $dns2 -Count 1 -Quiet) -eq $true) { $dnsServer = $dns2}else{ $msg = "Unable to connect to DNS servers: " + $dns1 + ", " + $dns2 Throw $msg}$record = Get-WmiObject -Namespace "root\microsoftdns" -Query $query -ComputerName $dnsServer | ? { $_.Ownername -match $cname }$thisServer = [System.Net.Dns]::GetHostEntry("LocalHost").HostName + "."$currentServer = $record.RecordData if ($currentServer -eq $thisServer ) { $cname + " CNAME is up to date: " + $currentServer}else{ $cname + " CNAME is being updated to " + $thisServer + ". It was " + $currentServer $record.RecordData = $thisServer $record.put()}This script does a few things:finds a responsive domain controller (Test-Connection does a ping and returns a Boolean value if you specify the -Quiet parameter)makes a WMI call to the domain controller to get the current CNAME record value (Get-WmiObject)gets the FQDN of this server (GetHostEntry)checks if the CNAME record is correct and updates it if necessary(You should update the values of the variables $cname, $dns1 and $dns2 for your environment.)Since my domain controllers are also hosted in Azure VMs, either one of them could be down at any point in time, so I need to find a DC that is responsive before attempting the DNS call. The other little thing here is that the CNAME record contains the FQDN of a machine, plus it ends with a period. So the comparison of the CNAME record has to take the trailing period into account. When I tested this step, I was getting ACCESS DENIED responses from PowerShell for the Get-WmiObject cmdlet that does a remote lookup on the DC. This occurred because the SQL Agent service account was not a member of the Domain Admins group, so I decided to create a SQL Credential to store the credentials for a domain administrator account and use it as a PowerShell proxy (rather than give the service account Domain Admins membership).In SQL Management Studio, right click on the Credentials node (under the server's Security node), and choose New Credential...Then, under SQL Agent-->Proxies, right click on the PowerShell node and choose New Proxy...Finally, in the job step properties for the PowerShell step, select the new proxy in the Run As drop down.I created this two step Job on both nodes of the Availability Group, but if you had more than two nodes, just create the same job on all the servers. I set the schedule for the job to execute every minute.When the server that is hosting the primary replica is running the job, the job history looks like this:The job history on the secondary server looks like this: When a failover occurs, the SQL Agent job on the new primary replica will detect that the CNAME needs to be updated within a minute. Based on the TTL of the CNAME (which I said at the beginning was 5 minutes), the SharePoint servers will get the new alias within five minutes and should be able to reconnect. I may want to shorten up the TTL to reduce the time it takes for the client connections to use the new alias. Using a DNS CNAME and a SQL Agent Job on all servers hosting AG replicas, I was able to create a pseudo-listener to automatically change the name of the server that was hosting the primary replica, for a scenario where I cannot use a regular AG listener (in this case, because the servers are all hosted in Azure).

Read the article

CodePlex Daily Summary for Tuesday, April 13, 2010

CodePlex Daily Summary for Tuesday, April 13, 2010New ProjectsChat Neo: Video chatDev-wow HappyFuwa: Silverlight + Asp.net + Ajax 实现的以北京奥运为题材，福娃在线聊天互动系统登录系统后，你可以和线上的朋友即时互动，走动聊天动作等都会呈现给其他的在线用户Dynamic Configuration Manager: Dynamic Configuration Manager GameHelper: the project of myselfGeotron: Geotron is a C# geolocation library to resolve postcodes and addresses to co-ordinates, to assist developers in creating location-aware applications. InfoPath Forms Services 2010 Web Testing Toolkit: This project has the tools and information needed to write Visual Studio web tests for InfoPath Forms Services 2010.IronBrainFuck, SimpleBrainFuck: IronBrainFuck and SimpleBrainFuck makes it easier for BrainFuck programmers to develop BrainFuck-compatible programs. It's developed in C#.Runtime Intelligence API: The Runtime Intelligence API library and samples provided by PreEmptive Solutions.SilverVNC 1.0: This project is a Silverlight VNC Viewer. It requires Silverlight 4.0 and works in Out of Browser with full-trust.Snippet Creator: Yet another Visual Studio plugin for creating code snippets.Software Codex: Software Codex is a collection of projects developed in .net to provide a set of libraries and functionalities for developers. It is divided into m...TestCrm: Let go!Make our CrmVidCoder: VidCoder is a DVD ripping and video transcoding application. It uses HandBrake for the encoding engine, but has a revamped and easy to use UI writt...WPF Data Virtualization: Component for displaying and interacting a large data set in WPF application.WPF Gantt chart: Gantt chart control for WPFNew ReleasesAJAX Control Toolkit: 40412: AJAX Control Toolkit Release Notes - April 12th 2010 Release Version 40412April 12, 2010 release of the AJAX Control Toolkit. AJAX Control Toolkit...ASP.NET MVC | SCAFFOLD: ASP.NET MVC SCAFFOLD 1.0 PREVIEW: Primeiro release do ASP.NET MVC SCAFFOLD.Autenticar no OpenLDAP utilizando pGIna: LDAPAuth plugin: Release: DLL LDAPAuth Brief: pGina pluginBluetooth Radar: Version 1.8: Add position helper class to test whether a given point is on the interior of a circle. Random set of Devices on the radar + Zindex changes on Mous...Database Searcher: DB-Searcher Binaries v0.1: First beta version containing following features: Search exact database values via .NET DB-Provider Microsoft SQL MySQL .NET Connector (no .NET t...DBSourceTools: DBSourceTools_1.2.0.7: Release 1.2.0.7 Extended search engine from (pegas)'s patch. Fixed Script Data bug with reserved word (eripsni). Write Targets can now create targe...ESB Toolkit Extensions: Tellago SOA ESB Extenstions v0.4: Windows Installer file that installs Library on a BizTalk ESB 2.0 system. This Install automatically configures the esb.config to use the new compo...Fluent Assertions: Release 1.2: See this blog post for more details on this release: http://www.dennisdoomen.net/2010/04/fluent-assertions-12-has-been-released.htmlFNA Fractal Numerical Algorithm for a new encryption technology: FNA: This is a latest distribution ( 0.04 at the moment). Is a Perl package (.pm). More information on: http://search.cpan.org/~anak/Free Silverlight & WPF Chart Control - Visifire: Visifire SL and WPF Charts 3.0.6 Released!: Hi, Today we have released the final version of Visifire v3.0.6 which contains the following major features: * Zoom using interactive ZoomRec...HD-Trailers.NET Downloader: HD-Trailers.NET_Downloader_v.91_BETA: - added configuration option 'FeedAddress' to specify the URL of the RSS feed to consume - implemented fix for workitem4260: AddDate = false; will ...HobbyBrew Mobile: Beta 1: First public BetaHome Access Plus+: v3.2.6.1: v3.2.6.1 Fixed the wrong date in the iCal Generator Fixed the admin booking posting logging it as being booked by the admin Fixed the problem o...HTML Ruby: 6.21.1: Added back the space ruby text option More consistent ruby text positioning regardless to the page's stylesInfoPath Forms Services 2010 Web Testing Toolkit: IPFS 2010 Web Test Toolkit 20100412 for VS2008: The ExtractAndSubstituteDynamicInfoPathData web test plugin. To use it, simply add the plugin to your web test. It automatically recognizes the inf...IronPython: 2.6.1: Hello Python Community, We’re pleased to announce the final release of IronPython 2.6.1. This version of IronPython makes great strides in stabili...IronRuby: 1.0: IronRuby 1.0 is the first stable version of IronRuby, targeting Ruby 1.8.6 compatibility. For a high-level compatibility report solely based on Rub...METAR.NET Decoder: 0.3.x beta: First public release. Main of the application is working. Metar can be downloaded, decoded, updated and encoded back to metar string. Release incl...MiniTwitter: 1.11: MiniTwitter 1.11 更新内容修正設定ファイルを自動でバックアップして、破損したときは出来るだけ修正するように。初回起動時にタイムラインを更新しようとすると落ちるバグを修正。MSBuild Mercurial Tasks: 1.0.1 Stable: Ready for Production release. This version integrates all the basic functionalities of Mercurial as defined in the Use Case 1.Multiplayer Quiz: Release 1_7_0_0: Latest Version Strongly recommended to use .NET 4.0 now that it is in RC It can be downloaded from hereMVC Foolproof Validation: Beta 0.9.3754: First Beta release. Addressed several bugs from alpha along with some considerable class refactoring. ModelAwareValidationAttribute will make creat...NodeXL: Network Overview, Discovery and Exploration for Excel: NodeXL Excel 2007 Template, version 1.0.1.121: The NodeXL Excel 2007 template displays a network graph using edge and vertex lists stored in an Excel 2007 workbook. What's NewThis version allow...Proxi [Proxy Interface]: Proxi Release 1.0.0.412: Proxi Release 1.0.0.412QueryUnit: QueryUnitPOC v. 0.0.0.8: This version add support for AreNotEqual, Greater, Less and fix some problems with "format" attribute used in conjunction with the string data type...Rainier: Trabalhos de orçamento empresarial: Estão disponíveis os arquivos de exemplo sobre o planejamento para orçamento empresarial. A resolução é referente aos exercícios explicados em sal...Runtime Intelligence API: Initial release: The initial release of the WCF contract & proxy assembly. AuthentiCode signed library.SharePoint Accelerators: Central Admin - Command Search: This web part allows you to search for a SharePoint 2010 Central Admin commands. This web part can come handy when you are demostrating SharePoint ...SharePoint Labs: SPLab5013A-FRA-Level100: SPLab5013A-FRA-Level100* This SharePoint Lab will teach you how to provision a computed site column that shows a customized view of an existing hid...SilverVNC 1.0: SilverVNC 1.0.3755.0: This download is the first release of the project published on www.silverlightplayground.org. For a detailed explanation please refer to http://www...Snippet Creator: SnippetCreator.Setup: This is the first and (I hope) final release.SQL Server Health & History (SQLH2): SQLH2 v.2.2.001: New Features Updated to use .Net 3.5 Job and Job history information implemented Last dif and log backup columns added Logical Disk implemented Dis...SQL Server Health & History (SQLH2): SQLH2PerfCollector v.2.1.003: Updated to run on .Net 3.5 Now installs to correct registry path on x64Star Trooper for XNA 2D Tutorial: Lesson one content: Here is Lesson one original content for the StarTrooper 2D XNA tutorial. The blog tutorial has now started over on http://xna-uk.net/blogs/darkgen...SysPad: SysPad 4.10.7.1: A folder management and scratchpad utility; especially useful in a business network setting that utilizes numerous, commonly used folders. The pro...TaskUnZip for SSIS: TaskUnZip for SSIS 1.1.0.0: Add: recursive compress. Add: filter option for exstract e compress file. (Tnx to: Kevin Wendler)TCP Wrapper: TCP Wrapper 1.0.0.3: Adding Client Accessor to CommingDataAvailableEventArgs ...UCD: Architecture: UCDArch 1.0: Production release of UCDArch 1.0 (for ASP.NET MVC 1.0). New Features including the ability to modify the NHibernate FlushMode, URL convention help...VCC: Latest build, v2.1.30412.0: Automatic drop of latest buildVidCoder: 0.1.0: First VidCoder beta release. It's missing a few features that will be added before release: Advanced x264 options In-GUI encode log Additiona...WatchersNET CKEditor™ Provider for DotNetNuke: CKEditor Provider 1.10.01: Whats New changesBrowser: Removed extra "\" sign from Current folder name selecting the root folder Browser: Fixed Folder Rendering Browser Fix...WPF Gantt chart: gantt: first, alpha version, of gantt chart for wpfxvanneste: Coverflow et thumbnail sharepoint: Code du coverflow silverlight du webcast sur les thumbnails sharepointMost Popular ProjectsWBFS ManagerRawrMicrosoft SQL Server Product Samples: DatabaseAJAX Control ToolkitSilverlight ToolkitWindows Presentation Foundation (WPF)ASP.NETMicrosoft SQL Server Community & SamplesFacebook Developer ToolkitPHPExcelMost Active ProjectsRawrnopCommerce. Open Source online shop e-commerce solution.AutoPocopatterns & practices – Enterprise LibraryShweet: SharePoint 2010 Team Messaging built with PexFarseer Physics EngineNB_Store - Free DotNetNuke Ecommerce Catalog ModuleIonics Isapi Rewrite FilterBlogEngine.NETBeanProxy

Read the article

Udev webcam rule read, but not respected?

- by user89305

I have two usb-webcams on them machine, but at bot they some switch /dev/video number. The solution to this problem seems to be new udev rule. I have added this rule in/etc/udev/rules.d/jj-video.rules: Fix webcam 1 KERNEL=="video1", SUBSYSTEM=="video4linux", SUBSYSTEMS=="usb", ATTRS{idVendor}=="1d6b", ATTRS{idProduct}=="0001", SYMLINK+="webcam1" Fix webcam 2 KERNEL=="video2", SUBSYSTEM=="video4linux", ATTR{name}=="Logitech QuickCam Pro 3000", KERNELS=="0000:00:1d.0", SUBSYSTEMS=="pci", DRIVERS=="uhci_hcd", ATTRS{vendor}=="0x8086", ATTRS##{device}=="0x2658", SYMLINK+="webcam2" but the symlinks are not created. I have tried many different combinations in this file. The present ones are just my lates attempts. I found the parameters in: jjk@eee-old:~$ udevadm info -a -p $(udevadm info -q path -p /class/video4linux/video1) Udevadm info starts with the device specified by the devpath and then walks up the chain of parent devices. It prints for every device found, all possible attributes in the udev rules key format. A rule to match, can be composed by the attributes of the device and the attributes from one single parent device. looking at device '/devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0/video4linux/video1': KERNEL=="video1" SUBSYSTEM=="video4linux" DRIVER=="" ATTR{name}=="Logitech QuickCam Pro 3000" ATTR{index}=="0" ATTR{button}=="0" looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0': KERNELS=="2-2:1.0" SUBSYSTEMS=="usb" DRIVERS=="Philips webcam" ATTRS{bInterfaceNumber}=="00" ATTRS{bAlternateSetting}==" 9" ATTRS{bNumEndpoints}=="02" ATTRS{bInterfaceClass}=="0a" ATTRS{bInterfaceSubClass}=="ff" ATTRS{bInterfaceProtocol}=="00" ATTRS{supports_autosuspend}=="0" looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2/2-2': KERNELS=="2-2" SUBSYSTEMS=="usb" DRIVERS=="usb" ATTRS{configuration}=="" ATTRS{bNumInterfaces}==" 3" ATTRS{bConfigurationValue}=="1" ATTRS{bmAttributes}=="a0" ATTRS{bMaxPower}=="500mA" ATTRS{urbnum}=="371076" ATTRS{idVendor}=="046d" ATTRS{idProduct}=="08b0" ATTRS{bcdDevice}=="0002" ATTRS{bDeviceClass}=="00" ATTRS{bDeviceSubClass}=="00" ATTRS{bDeviceProtocol}=="00" ATTRS{bNumConfigurations}=="1" ATTRS{bMaxPacketSize0}=="8" ATTRS{speed}=="12" ATTRS{busnum}=="2" ATTRS{devnum}=="2" ATTRS{devpath}=="2" ATTRS{version}==" 1.10" ATTRS{maxchild}=="0" ATTRS{quirks}=="0x0" ATTRS{avoid_reset_quirk}=="0" ATTRS{authorized}=="1" ATTRS{serial}=="01402100A5000000" looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb2': KERNELS=="usb2" SUBSYSTEMS=="usb" DRIVERS=="usb" ATTRS{configuration}=="" ATTRS{bNumInterfaces}==" 1" ATTRS{bConfigurationValue}=="1" ATTRS{bmAttributes}=="e0" ATTRS{bMaxPower}==" 0mA" ATTRS{urbnum}=="34" ATTRS{idVendor}=="1d6b" ATTRS{idProduct}=="0001" ATTRS{bcdDevice}=="0302" ATTRS{bDeviceClass}=="09" ATTRS{bDeviceSubClass}=="00" ATTRS{bDeviceProtocol}=="00" ATTRS{bNumConfigurations}=="1" ATTRS{bMaxPacketSize0}=="64" ATTRS{speed}=="12" ATTRS{busnum}=="2" ATTRS{devnum}=="1" ATTRS{devpath}=="0" ATTRS{version}==" 1.10" ATTRS{maxchild}=="2" ATTRS{quirks}=="0x0" ATTRS{avoid_reset_quirk}=="0" ATTRS{authorized}=="1" ATTRS{manufacturer}=="Linux 3.2.0-29-generic uhci_hcd" ATTRS{product}=="UHCI Host Controller" ATTRS{serial}=="0000:00:1d.0" ATTRS{authorized_default}=="1" looking at parent device '/devices/pci0000:00/0000:00:1d.0': KERNELS=="0000:00:1d.0" SUBSYSTEMS=="pci" DRIVERS=="uhci_hcd" ATTRS{vendor}=="0x8086" ATTRS{device}=="0x2658" ATTRS{subsystem_vendor}=="0x1043" ATTRS{subsystem_device}=="0x82d8" ATTRS{class}=="0x0c0300" ATTRS{irq}=="23" ATTRS{local_cpus}=="ff" ATTRS{local_cpulist}=="0-7" ATTRS{dma_mask_bits}=="32" ATTRS{consistent_dma_mask_bits}=="32" ATTRS{broken_parity_status}=="0" ATTRS{msi_bus}=="" looking at parent device '/devices/pci0000:00': KERNELS=="pci0000:00" SUBSYSTEMS=="" DRIVERS=="" jjk@eee-old:~$ And tested the setup: sudo udevadm --debug test /sys/class/video4linux/video1 main: runtime dir '/run/udev' run_command: calling: test adm_test: version 175 This program is for debugging only, it does not run any program, specified by a RUN key. It may show incorrect results, because some values may be different, or not available at a simulation run. parse_file: reading '/lib/udev/rules.d/40-crda.rules' as rules file parse_file: reading '/lib/udev/rules.d/40-fuse.rules' as rules file parse_file: reading '/lib/udev/rules.d/40-gnupg.rules' as rules file parse_file: reading '/lib/udev/rules.d/40-hplip.rules' as rules file parse_file: reading '/lib/udev/rules.d/40-ia64.rules' as rules file parse_file: reading '/lib/udev/rules.d/40-inputattach.rules' as rules file parse_file: reading '/lib/udev/rules.d/40-libgphoto2-2.rules' as rules file parse_file: reading '/lib/udev/rules.d/40-libsane.rules' as rules file parse_file: reading '/lib/udev/rules.d/40-ppc.rules' as rules file parse_file: reading '/lib/udev/rules.d/40-usb_modeswitch.rules' as rules file parse_file: reading '/lib/udev/rules.d/40-xserver-xorg-video-intel.rules' as rules file parse_file: reading '/lib/udev/rules.d/42-qemu-usb.rules' as rules file parse_file: reading '/lib/udev/rules.d/50-firmware.rules' as rules file parse_file: reading '/lib/udev/rules.d/50-udev-default.rules' as rules file parse_file: reading '/lib/udev/rules.d/55-dm.rules' as rules file parse_file: reading '/lib/udev/rules.d/56-hpmud_support.rules' as rules file parse_file: reading '/lib/udev/rules.d/60-cdrom_id.rules' as rules file parse_file: reading '/lib/udev/rules.d/60-pcmcia.rules' as rules file parse_file: reading '/lib/udev/rules.d/60-persistent-alsa.rules' as rules file parse_file: reading '/lib/udev/rules.d/60-persistent-input.rules' as rules file parse_file: reading '/lib/udev/rules.d/60-persistent-serial.rules' as rules file parse_file: reading '/lib/udev/rules.d/60-persistent-storage-dm.rules' as rules file parse_file: reading '/lib/udev/rules.d/60-persistent-storage-tape.rules' as rules file parse_file: reading '/lib/udev/rules.d/60-persistent-storage.rules' as rules file parse_file: reading '/lib/udev/rules.d/60-persistent-v4l.rules' as rules file parse_file: reading '/lib/udev/rules.d/61-accelerometer.rules' as rules file parse_file: reading '/lib/udev/rules.d/64-xorg-xkb.rules' as rules file parse_file: reading '/lib/udev/rules.d/66-xorg-synaptics-quirks.rules' as rules file parse_file: reading '/lib/udev/rules.d/69-cd-sensors.rules' as rules file add_rule: IMPORT found builtin 'usb_id', replacing /lib/udev/rules.d/69-cd-sensors.rules:76 parse_file: reading '/lib/udev/rules.d/69-libmtp.rules' as rules file parse_file: reading '/lib/udev/rules.d/69-xorg-vmmouse.rules' as rules file parse_file: reading '/lib/udev/rules.d/69-xserver-xorg-input-wacom.rules' as rules file parse_file: reading '/etc/udev/rules.d/70-persistent-cd.rules' as rules file parse_file: reading '/etc/udev/rules.d/70-persistent-net.rules' as rules file parse_file: reading '/lib/udev/rules.d/70-printers.rules' as rules file parse_file: reading '/lib/udev/rules.d/70-udev-acl.rules' as rules file parse_file: reading '/lib/udev/rules.d/75-cd-aliases-generator.rules' as rules file parse_file: reading '/lib/udev/rules.d/75-net-description.rules' as rules file parse_file: reading '/lib/udev/rules.d/75-persistent-net-generator.rules' as rules file parse_file: reading '/lib/udev/rules.d/75-probe_mtd.rules' as rules file parse_file: reading '/lib/udev/rules.d/75-tty-description.rules' as rules file parse_file: reading '/lib/udev/rules.d/77-mm-ericsson-mbm.rules' as rules file parse_file: reading '/lib/udev/rules.d/77-mm-longcheer-port-types.rules' as rules file parse_file: reading '/lib/udev/rules.d/77-mm-nokia-port-types.rules' as rules file parse_file: reading '/lib/udev/rules.d/77-mm-pcmcia-device-blacklist.rules' as rules file parse_file: reading '/lib/udev/rules.d/77-mm-platform-serial-whitelist.rules' as rules file parse_file: reading '/lib/udev/rules.d/77-mm-qdl-device-blacklist.rules' as rules file parse_file: reading '/lib/udev/rules.d/77-mm-simtech-port-types.rules' as rules file parse_file: reading '/lib/udev/rules.d/77-mm-usb-device-blacklist.rules' as rules file parse_file: reading '/lib/udev/rules.d/77-mm-x22x-port-types.rules' as rules file parse_file: reading '/lib/udev/rules.d/77-mm-zte-port-types.rules' as rules file parse_file: reading '/lib/udev/rules.d/77-nm-olpc-mesh.rules' as rules file parse_file: reading '/lib/udev/rules.d/78-graphics-card.rules' as rules file parse_file: reading '/lib/udev/rules.d/78-sound-card.rules' as rules file parse_file: reading '/lib/udev/rules.d/80-drivers.rules' as rules file parse_file: reading '/lib/udev/rules.d/80-mm-candidate.rules' as rules file parse_file: reading '/lib/udev/rules.d/80-udisks.rules' as rules file parse_file: reading '/lib/udev/rules.d/85-brltty.rules' as rules file parse_file: reading '/lib/udev/rules.d/85-hdparm.rules' as rules file parse_file: reading '/lib/udev/rules.d/85-hplj10xx.rules' as rules file parse_file: reading '/lib/udev/rules.d/85-keyboard-configuration.rules' as rules file parse_file: reading '/lib/udev/rules.d/85-regulatory.rules' as rules file parse_file: reading '/lib/udev/rules.d/85-usbmuxd.rules' as rules file parse_file: reading '/lib/udev/rules.d/90-alsa-restore.rules' as rules file parse_file: reading '/lib/udev/rules.d/90-alsa-ucm.rules' as rules file parse_file: reading '/lib/udev/rules.d/90-libgpod.rules' as rules file parse_file: reading '/lib/udev/rules.d/90-pulseaudio.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-cd-devices.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-keyboard-force-release.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-keymap.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-udev-late.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-upower-battery-recall-dell.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-upower-battery-recall-fujitsu.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-upower-battery-recall-gateway.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-upower-battery-recall-ibm.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-upower-battery-recall-lenovo.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-upower-battery-recall-toshiba.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-upower-csr.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-upower-hid.rules' as rules file parse_file: reading '/lib/udev/rules.d/95-upower-wup.rules' as rules file parse_file: reading '/lib/udev/rules.d/97-bluetooth-hid2hci.rules' as rules file parse_file: reading '/etc/udev/rules.d/jj-video.rules' as rules file udev_rules_new: rules use 259284 bytes tokens (21607 * 12 bytes), 37913 bytes buffer udev_rules_new: temporary index used 67520 bytes (3376 * 20 bytes) udev_device_new_from_syspath: device 0x215103e0 has devpath '/devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0/video4linux/video1' udev_device_new_from_syspath: device 0x21510758 has devpath '/devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0/video4linux/video1' udev_device_read_db: device 0x21510758 filled with db file data udev_device_new_from_syspath: device 0x21510e10 has devpath '/devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0' udev_device_new_from_syspath: device 0x21511b10 has devpath '/devices/pci0000:00/0000:00:1d.0/usb2/2-2' udev_device_new_from_syspath: device 0x215132f8 has devpath '/devices/pci0000:00/0000:00:1d.0/usb2' udev_device_new_from_syspath: device 0x21513650 has devpath '/devices/pci0000:00/0000:00:1d.0' udev_device_new_from_syspath: device 0x21513980 has devpath '/devices/pci0000:00' udev_rules_apply_to_event: GROUP 44 /lib/udev/rules.d/50-udev-default.rules:29 udev_rules_apply_to_event: IMPORT 'v4l_id /dev/video1' /lib/udev/rules.d/60-persistent-v4l.rules:7 udev_event_spawn: starting 'v4l_id /dev/video1' spawn_read: 'v4l_id /dev/video1'(out) 'ID_V4L_VERSION=2' spawn_read: 'v4l_id /dev/video1'(out) 'ID_V4L_PRODUCT=Logitech QuickCam Pro 3000' spawn_read: 'v4l_id /dev/video1'(out) 'ID_V4L_CAPABILITIES=:capture:' spawn_wait: 'v4l_id /dev/video1' [2609] exit with return code 0 udev_rules_apply_to_event: IMPORT builtin 'usb_id' /lib/udev/rules.d/60-persistent-v4l.rules:9 builtin_usb_id: /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0: if_class 10 protocol 0 udev_builtin_add_property: ID_VENDOR=046d udev_builtin_add_property: ID_VENDOR_ENC=046d udev_builtin_add_property: ID_VENDOR_ID=046d udev_builtin_add_property: ID_MODEL=08b0 udev_builtin_add_property: ID_MODEL_ENC=08b0 udev_builtin_add_property: ID_MODEL_ID=08b0 udev_builtin_add_property: ID_REVISION=0002 udev_builtin_add_property: ID_SERIAL=046d_08b0_01402100A5000000 udev_builtin_add_property: ID_SERIAL_SHORT=01402100A5000000 udev_builtin_add_property: ID_TYPE=generic udev_builtin_add_property: ID_BUS=usb udev_builtin_add_property: ID_USB_INTERFACES=:0aff00:010100:010200: udev_builtin_add_property: ID_USB_INTERFACE_NUM=00 udev_builtin_add_property: ID_USB_DRIVER=Philips webcam udev_rules_apply_to_event: LINK 'v4l/by-id/usb-046d_08b0_01402100A5000000-video-index0' /lib/udev/rules.d/60-persistent-v4l.rules:10 udev_rules_apply_to_event: IMPORT builtin 'path_id' /lib/udev/rules.d/60-persistent-v4l.rules:16 udev_builtin_add_property: ID_PATH=pci-0000:00:1d.0-usb-0:2:1.0 udev_builtin_add_property: ID_PATH_TAG=pci-0000_00_1d_0-usb-0_2_1_0 udev_rules_apply_to_event: LINK 'v4l/by-path/pci-0000:00:1d.0-usb-0:2:1.0-video-index0' /lib/udev/rules.d/60-persistent-v4l.rules:17 udev_rules_apply_to_event: RUN 'udev-acl --action=$env{ACTION} --device=$env{DEVNAME}' /lib/udev/rules.d/70-udev-acl.rules:74 udev_rules_apply_to_event: LINK 'webcam1' /etc/udev/rules.d/jj-video.rules:2 udev_event_execute_rules: no node name set, will use kernel supplied name 'video1' udev_node_add: creating device node '/dev/video1', devnum=81:1, mode=0660, uid=0, gid=44 udev_node_mknod: preserve file '/dev/video1', because it has correct dev_t udev_node_mknod: preserve permissions /dev/video1, 020660, uid=0, gid=44 node_symlink: preserve already existing symlink '/dev/char/81:1' to '../video1' link_find_prioritized: found 'c81:2' claiming '/run/udev/links/v4l\x2fby-id\x2fusb-046d_08b0_01402100A5000000-video-index0' udev_device_new_from_syspath: device 0x21516748 has devpath '/devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2:1.0/video4linux/video2' udev_device_read_db: device 0x21516748 filled with db file data link_find_prioritized: found 'c81:1' claiming '/run/udev/links/v4l\x2fby-id\x2fusb-046d_08b0_01402100A5000000-video-index0' link_update: creating link '/dev/v4l/by-id/usb-046d_08b0_01402100A5000000-video-index0' to '/dev/video1' node_symlink: atomically replace '/dev/v4l/by-id/usb-046d_08b0_01402100A5000000-video-index0' link_find_prioritized: found 'c81:1' claiming '/run/udev/links/v4l\x2fby-path\x2fpci-0000:00:1d.0-usb-0:2:1.0-video-index0' link_update: creating link '/dev/v4l/by-path/pci-0000:00:1d.0-usb-0:2:1.0-video-index0' to '/dev/video1' node_symlink: preserve already existing symlink '/dev/v4l/by-path/pci-0000:00:1d.0-usb-0:2:1.0-video-index0' to '../../video1' link_find_prioritized: found 'c81:1' claiming '/run/udev/links/webcam1' link_update: creating link '/dev/webcam1' to '/dev/video1' node_symlink: preserve already existing symlink '/dev/webcam1' to 'video1' udev_device_update_db: created db file '/run/udev/data/c81:1' for '/devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0/video4linux/video1' ACTION=add COLORD_DEVICE=1 COLORD_KIND=camera DEVLINKS=/dev/v4l/by-id/usb-046d_08b0_01402100A5000000-video-index0 /dev/v4l/by-path/pci-0000:00:1d.0-usb-0:2:1.0-video-index0 /dev/webcam1 DEVNAME=/dev/video1 DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0/video4linux/video1 ID_BUS=usb ID_MODEL=08b0 ID_MODEL_ENC=08b0 ID_MODEL_ID=08b0 ID_PATH=pci-0000:00:1d.0-usb-0:2:1.0 ID_PATH_TAG=pci-0000_00_1d_0-usb-0_2_1_0 ID_REVISION=0002 ID_SERIAL=046d_08b0_01402100A5000000 ID_SERIAL_SHORT=01402100A5000000 ID_TYPE=generic ID_USB_DRIVER=Philips webcam ID_USB_INTERFACES=:0aff00:010100:010200: ID_USB_INTERFACE_NUM=00 ID_V4L_CAPABILITIES=:capture: ID_V4L_PRODUCT=Logitech QuickCam Pro 3000 ID_V4L_VERSION=2 ID_VENDOR=046d ID_VENDOR_ENC=046d ID_VENDOR_ID=046d MAJOR=81 MINOR=1 SUBSYSTEM=video4linux TAGS=:udev-acl: UDEV_LOG=6 USEC_INITIALIZED=18213768 run: 'udev-acl --action=add --device=/dev/video1' jjk@eee-old:~$ (and correspondingly for video2) It looks to me like my rules are read, but not respected. What am I doing wrong?

Read the article

Simple way of converting server side objects into client side using JSON serialization for asp.net websites

- by anil.kasalanati

Introduction:- With the growth of Web2.0 and the need for faster user experience the spotlight has shifted onto javascript based applications built using REST pattern or asp.net AJAX Pagerequest manager. And when we are working with javascript wouldn’t it be much better if we could create objects in an OOAD way and easily push it to the client side. Following are the reasons why you would push the server side objects onto client side - Easy availability of the complex object. - Use C# compiler and rick intellisense to create and maintain the objects but use them in the javascript. You could run code analysis etc. - Reduce the number of calls we make to the server side by loading data on the pageload. I would like to explain about the 3rd point because that proved to be highly beneficial to me when I was fixing the performance issues of a major website. There could be a scenario where in you be making multiple AJAX based webrequestmanager calls in order to get the same response in a single page. This happens in the case of widget based framework when all the widgets are independent but they need some common information available in the framework to load the data. So instead of making n multiple calls we could load the data needed during pageload. The above picture shows the scenario where in all the widgets need the common information and then call GetData webservice on the server side. Ofcourse the result can be cached on the client side but a better solution would be to avoid the call completely. In order to do that we need to JSONSerialize the content and send it in the DOM. Example:- I have developed a simple application to demonstrate the idea and I would explaining that in detail here. The class called SimpleClass would be sent as serialized JSON to the client side . And this inherits from the base class which has the implementation for the GetJSONString method. You can create a single base class and all the object which need to be pushed to the client side can inherit from that class. The important thing to note is that the class should be annotated with DataContract attribute and the methods should have the Data Member attribute. This is needed by the .Net DataContractSerializer and this follows the opt-in mode so if you want to send an attribute to the client side then you need to annotate the DataMember attribute. So if I didn’t want to send the Result I would simple remove the DataMember attribute. This is default WCF/.Net 3.5 stuff but it provides the flexibility of have a fullfledged object on the server side but sending a smaller object to the client side. Sometimes you may hide some values due to security constraints. And thing you will notice is that I have marked the class as Serializable so that it can be stored in the Session and used in webfarm deployment scenarios. Following is the implementation of the base class – This implements the default DataContractJsonSerializer and for more information or customization refer to following blogs – http://softcero.blogspot.com/2010/03/optimizing-net-json-serializing-and-ii.html http://weblogs.asp.net/gunnarpeipman/archive/2010/12/28/asp-net-serializing-and-deserializing-json-objects.aspx The next part is pretty simple, I just need to inject this object into the aspx page. And in the aspx markup I have the following line – <script type="text/javascript"> var data =(<%=SimpleClassJSON %>); alert(data.ResultText); </script> This will output the content as JSON into the variable data and this can be any element in the DOM. And you can verify the element by checking data in the Firebug console. Design Consideration – If you have a lot of javascripts then you need to think about using Script # and you can write javascript in C#. Refer to Nikhil’s blog – http://projects.nikhilk.net/ScriptSharp Ensure that you are taking security into consideration while exposing server side objects on to client side. I have seen application exposing passwords, secret key so it is not a good practice. The application can be tested using the following url – http://techconsulting.vpscustomer.com/Samples/JsonTest.aspx The source code is available at http://techconsulting.vpscustomer.com/Source/HistoryTest.zip

Read the article

CodePlex Daily Summary for Thursday, March 25, 2010

CodePlex Daily Summary for Thursday, March 25, 2010New ProjectsAccessibilityChecker: Accessibility Checker is custom feature developed to check accessibility requirements in a SharePoint PortalAnne Epstein - Personal Repository: Project Description This project contains multiple samples with various snippets and projects from blog posts, user group talks, and conference se...BatterySaver: BatterySaver is a simple application, in C#, that allows laptop users to perform actions based on battery notification events (switching from batte...dtxJson: C# coded JSON (JavaScript Object Notation) parser.eCamp: eCamp is a modular and extensible electronic camp management application. Written in C# and WPF, it follows many of the latest technology trends su...epdevplatform: epdevplatformERP: Environment Colaborative Resources ProjectFaceLight - Simple Silverlight Face Detection: FaceLight is a simple facial recognition method that can be used with Silverlight 's webcam. It searches for a certain sized skin color region in a...Forum PAF - The Open Source .Net Forum - From Viet Nam - By Thomas John (jntpaf): The Open Source .Net Forum - From Viet Nam ------------------------- Các phần mềm cần thiết để chạy Forum PAF: 1. .Net Framework 2.0 (trở lên) 2....Gawam Savel - Sistema de Avaliação Eletrônica: Projeto de TCC ...Html5 Helpers and tools for Asp.Net MVC: Html5 Helper aims to provide a generic helper context to produce HTML5 content in ASP.NET MVCIfeanyi Echeruo's WPF Recipes: WPF Recipes C# code samples showing how to solve some non-trivial problems in WPFITM 495 - iPhone App: school project iphone appKnowledge Exchange: Stack Overflow Inspired Knowledge ExchangeMailCheck: Mail检查程序。NetBoard: NetBoard is a lightweight system designed to act as the Blackboard in a micro-blackboard architecture for use within an OO system - even when withi...RodBass.com: RodBass.comsemanticrest: This is a vision of semantics mashups for rest web services.StatSpaceUI: StatSpaceUITFS Merge Tool: A small tool for merging changesets between TFS branches.The Interface To End All Interfaces: We interfaced everything, so that you can implement anything...Tim - Open Source Projects And Samples: Open source projects / Samples for http://tim.bellette.netWindows XNA: A place for those who enjoy there XNA Game Studio programing on Windows. For a place to share XNA Game Studio games for Windows in English. I'm loo...XAML Code Snippets addin for Visual Studio 2010: Provides support for adding XAML code snippets in the Visual Studio 2010 code editor for XAML in WPF and Silverlight projects.New ReleasesAnyWorks: AnyWorks1.2Bin: AnyWorks1.2AnyWorks: AnyWorks1.2Src: AnyWorks1.2AppFabric Caching Admin Tool: AppFabric Caching Admin Tool 1.0: System Requirements:.NET 4.0 RC AppFabric Caching Beta2 Test On:Win 7 (64x) Note: Must run as Administrator !!!ASP.NET Wiki Control: Release 1.1: - Modified text and varchar columns to nvarchar for unicode support. - Modified path info logic to disable its use if the page's raw url currently...B&W Port Scanner: Black`n`White Port Scanner 2.0: Fast Cross-Platform Port Scanner with Vulnerability Detection Tools. 3 vulnerability detection tools are included in this version: - Detection of ...BatterySaver: 0.1: Initial Release This is the initial release of the application. The application is very much beta with lots of changes upcoming. Known Issues The...BatterySaver: 0.2: Changes+ Add support for enabling and disabling devices (6)Compare .NET Objects: Version 1.2.0.0: New Features: Compare Generic Classes that Implement IList Indexers Compare Datasets Compare DataTables Compare DataRows Consider IList and...Controlled Vocabulary: 1.0.0.3: System Requirements Outlook 2007 / 2010 .Net Framework 3.5 Installation 1. Close Outlook (Use Task Manager to ensure no running instances in the b...crudwork is a library of reuseable classes for developing .NET applications: crudwork 2.2.0.2: minor changes. new guid for msi and new strongly named guidDigitallyCreated Utilities: DigitallyCreated Utilities v1.0.0: This release is the v1.0.0 version of DigitallyCreated Utilities. Binary Distribution The binary distribution contains the following: Compiled bin...DirectQ: Release 1.8.2: Adds several bugfixes and improved functionality. This release supersedes 1.8.1 which will be shortly removed. A very big THANK YOU to everyone w...DotNetNuke® Community Edition: 05.03.01: Major Highlights Issue fixed issue with the email notifications where the From and To addresses were swapped. Issue fixed with signature ch...Encrypted Notes: Encrypted Notes 1.5: This is the latest version of Encrypted Notes (1.5). It has an installer - it will create a directory 'CPascoe' in My Documents. Once you have ext...EnhSim: Release v1.9.8.1: Release v1.9.8.1Adding in the Glyph of Flame Shock changes in 3.3.3FlickrNet API Library: 3.0 Beta: A brand new version of the FlickrNet library, exposing 100% of the Flickr API's methods, along with streamlined class and method names. All classe...Forum PAF - The Open Source .Net Forum - From Viet Nam - By Thomas John (jntpaf): Forum PAF - The Open Source .Net Forum: A, Các phần mềm cần thiết để chạy Forum PAF: 1. .Net Framework 2.0 (trở lên) 2. Ajax Extension 1.0 (trở lên) 3. Sql Server 2005 (Sql Server Expr...HydroDesktop - CUAHSI Hydrologic Information System Desktop Application: HydroDesktop 0.7.3735 Alpha Installer: This is the testing release of the HydroDesktop 0.7 alpha version. Features supported in this version include: Search for data and download of Hydr...MDownloader: MDownloader-0.15.9.56953: Fixed Uploading.com links detection.MiniTwitter: 1.10: MiniTwitter 1.10 更新内容追加未読管理時に未読数をタブに表示する機能を実装サイレントモードを実装（通知領域アイコンを右クリックして出るメニューから切り替え）修正「お気に入りワードを含む項目だけ表示する」オプションが機能していなかった問題を修正NoteExpress User Tools (NEUT) - Do it by ourselves!: NoteExpress User Tools 1.9.1: 测试版本：NoteExpress 2.5.0.1147 #修正一个改动的bugOneCMS: OneCMS 2.6: OneCMS 2.6 is finally here! Along with various bug fixes 2.6 also brings with it many new features such as the videos module, plugins system, and m...Quantity System Framework: Quantity System Calculator 1.1.9.93: Experience the new edition of the quantity system with text support and function treated as values now you can multiply functions and divide funct...Selection Maker: Selection Maker 1.4: some minor bugs fixed. icon added for running and uninstalling the application.sPATCH: sPatcher v0.8a: + Disabled patchers proxy settings to increase connection speed sPatch - Server Example *Contains a sample Patch that "downgrades" PWI 1.4.2 Clien...VSTT 2008 Quick Reference Guide: VS Performance Testing Quick Reference V2.0: Visual Studio Performance Testing Quick Reference Guide (Version 2.0)WeatherBar: WeatherBar 2.0: WeatherBar 2.0 Changelog: Introduced application settings. Modified UI. Ability to switch between Fahrenheit and Celsius (application-wide). ...WillStrohl.LightboxGallery Module for DotNetNuke: WillStrohl.LightboxGallery v1.02.01: This version of the Lightbox Gallery Module adds the following features: Upgraded the Autocomplete jQuery plugin Fixed an IE8 error that was occu...Windows XNA: Base Defense Alpha 0.339: Alpha 0.338 had a really bad bug that made the game crash, that is what I get for coding after 3am... I also made some AI for the Raptor. So now it...WPF Dynamic Data Display: Silverlight DynamicDataDisplay v0.2 - Spring 2010: Silverlight version of WPF DynamicDataDisplay charting library The version 0.2 shows a greater performance comparing with version 0.1 while having...Most Popular ProjectsMetaSharpRawrWBFS ManagerASP.NET Ajax LibrarySilverlight ToolkitMicrosoft SQL Server Product Samples: DatabaseAJAX Control ToolkitLiveUpload to FacebookWindows Presentation Foundation (WPF)ASP.NETMost Active ProjectsRawrjQuery Library for SharePoint Web ServicesFarseer Physics EngineBlogEngine.NETFacebook Developer ToolkitNB_Store - Free DotNetNuke Ecommerce Catalog ModulePHPExcelTable2ClassFluent Ribbon Control SuiteLINQ to Twitter

Read the article

CodePlex Daily Summary for Saturday, May 12, 2012

CodePlex Daily Summary for Saturday, May 12, 2012Popular ReleasesKanboxAPI: KanboxAPI beta: ????? Token Info List DownloadMedia Companion: Media Companion 3.502b: It has been a slow week, but this release addresses a couple of recent bugs: Movies Multi-part Movies - Existing .nfo files that differed in name from the first part, were missed and scraped again. Trailers - MC attempted to scrape info for existing trailers. TV Shows Show Scraping - shows available only in the non-default language would not show up in the main browser. The correct language can now be selected using the TV Show Selector for a single show. General Will no longer prompt for ...NewLife XCode ??????: XCode v8.5.2012.0508、XCoder v4.7.2012.0320: X????： 1，????For .Net 4.0?? XCoder????： 1，???????，????X????，?????? XCode????： 1，Insert/Update/Delete???????????????，???SQL???? 2，IEntityOperate?????? 3，????????IEntityTree 4，????????????????? 5，?????????? 6，??????????????dycom: v1.0: DYCom ????????：Silverlight, Windows phone 7.5.NETMF_for_STM32: Beta 1 Release: First public beta release.Google Book Downloader: Google Books Downloader Lite 1.0: Google Books Downloader Lite 1.0Python Tools for Visual Studio: 1.5 Alpha: We’re pleased to announce the release of Python Tools for Visual Studio 1.5 Alpha. Python Tools for Visual Studio (PTVS) is an open-source plug-in for Visual Studio which supports programming with the Python language. PTVS supports a broad range of features including: • Supports Cpython, IronPython, Jython and Pypy • Python editor with advanced member, signature intellisense and refactoring • Code navigation: “Find all refs”, goto definition, and object browser • Local and remote debugging...JayData - The cross-platform HTML5 data-management library for JavaScript: JayData 1.0 RC1 Refresh 1: JayData 1.0.0 RC1 Refresh 1 JayData is a unified data access API to webSQL, indexedDB, OData, Facebook and YQL. Overview The major feature of this release is related to OData provider, FunctionImport is now generally supported. Now you can consume OData service operations (WebMethods). We extended the JaySvcUtil to generate the necessary metadata. We included many fixes, such as the Visual Studio 2010 IntelliSense optimalization (RC1 was optimized only to VS11). It's recommended to upgrade...AD Gallery: AD Gallery 1.2.7: NewsFixed a bug which caused the current thumbnail not to be highlighted Added a hook to take complete control over how descriptions are handled, take a look under Documentation for more info Added removeAllImages()51Degrees.mobi - Mobile Device Detection and Redirection: 2.1.4.8: One Click Install from NuGet Data ChangesIncludes 42 new browser properties in both the Lite and Premium data sets. Premium Data includes many new devices including Nokia Lumia 900, BlackBerry 9220 and HTC One, the Samsung Galaxy Tab 2 range and Samsung Galaxy S III. Lite data includes devices released in January 2012. Changes to Version 2.1.4.81. The IsFirstTime method of the RedirectModule will now return the same value when called multiple times for the same request. This was prevent...Mugen Injection: Mugen Injection ver 2.2 (WinRT supported): Added NamedParameterAttribute, OptionalParameterAttribute. Added behaviors ICycleDependencyBehavior, IResolveUnregisteredTypeBehavior. Added WinRT support. Added support for NET 4.5. Added support for MVC 4.NShape - .Net Diagramming Framework for Industrial Applications: NShape 2.0.1: Changes in 2.0.1:Bugfixes: IRepository.Insert(Shape shape) and IRepository.Insert(IEnumerable<Shape> shapes) no longer insert shape connections. Several context menu items did display although the required permission was not granted Display did not reset the visible and active layers when changing the diagram NullReferenceException when pressing Del key and no shape was selected Changed Behavior: LayerCollection.Find("") no longer throws an exception. Improvements: Display does not rese...AcDown????? - Anime&Comic Downloader: AcDown????? v3.11.6: ?? ●AcDown??????????、??、??????，????1M，????，????，?????????????????????????。???????????Acfun、????(Bilibili)、??、??、YouTube、??、???、??????、SF????、????????????。??????AcPlay?????，??????、????????????????。 ● AcDown???????????????????????????，???，???????????????????。 ● AcDown???????C#??，????.NET Framework 2.0??。?????"Acfun?????"。 ????32??64? Windows XP/Vista/7/8 ????????????? ??：????????Windows XP???,?????????.NET Framework 2.0???(x86)，?????"?????????"??? ??????????????，??????????： ??"AcDo...sb0t: sb0t 4.64: New commands added: #scribble <url> #adminscribble on #adminscribble offDocument.Editor: 2012.4: Whats new for Document.Editor 2012.4: Improved Template support Improved Options Dialog Minor Bug Fix's, improvements and speed upsJson.NET: Json.NET 4.5 Release 5: New feature - Added ItemIsReference, ItemReferenceLoopHandling, ItemTypeNameHandling, ItemConverterType to JsonPropertyAttribute New feature - Added ItemRequired to JsonObjectAttribute New feature - Added Path to JsonWriterException Change - Improved deserializer call stack memory usage Change - Moved the PDB files out of the NuGet package into a symbols package Fix - Fixed infinite loop from an input error when reading an array and error handling is enabled Fix - Fixed base objec...BlackJumboDog: Ver5.6.1: 2012.05.07 Ver5.6.1 (1)????????????????(Ver5.6.0??)??? (2)HTTP?????SSL????????????（Ver5.6.0??）??? (3)HTTP?????2G??????????????????????????? (4)HTP????　?????????ExtAspNet: ExtAspNet v3.1.5: ExtAspNet - ?? ExtJS ??? ASP.NET 2.0 ???，????? AJAX ?????????? ExtAspNet ????? ExtJS ??? ASP.NET 2.0 ???，????? AJAX ??????????。 ExtAspNet ??????? JavaScript，?? CSS，?? UpdatePanel，?? ViewState，?? WebServices ???????。 ??????: IE 7.0, Firefox 3.6, Chrome 3.0, Opera 10.5, Safari 3.0+ ????：Apache License 2.0 (Apache) ??：http://extasp.net/ ??：http://bbs.extasp.net/ ??：http://extaspnet.codeplex.com/ ??：http://sanshi.cnblogs.com/ ????： +2012-05-06 v3.1.5 -????????：grid/grid_twogrid.aspx。 +?...SharpDevelop: SharpDevelop 4.2: Please see http://community.sharpdevelop.net/forums/t/15772.aspx for the release announcement.Desktop Google Reader: 1.4.4: Taskbar icon overlay (number of unread items) can now be switched off in preferences (Windows Vista / 7 only) Maximize button now can be toggled to be fullscreen (as befor) or only normal maximize (taskbar stays visible) in preferences List of feeds is now sorted by alphabetNew Projects3D Scene Editor: A generic 3d level editor built using XNA to speed up designing and building game levels.Attribute Based Cache using Unity Interception: Unity interception handler attribute for Caching which allows to apply boiler plate caching pattern to classes, and class members directly, without configuring them in the application configuration file. Configure your choice of Cache Provider (ObjectCache, Azure included) in the Unity IoC Container and apply the attribute to the method which you want to cache AutoCompleteBox for WinRT: None yetBAC2 Bachelor's Thesis Source Code: The source code of my Bachelor's ThesisBAMabase: It's a bamabase.BBSProject: BBSProjectBrain 2 - Game Engine: Brain 2 is a Game Engine that runs on multiple platforms.cobra-winldtp: Cobra - Windows version of Linux Desktop Testing Project (WinLDTP) - http://ldtp.freedesktop.org LDTP is a GUI test automation tool works on both Windows and Linux platform Windows GUI test automation tool written in C# and test scripts can be written in Python for now. Ruby API will be added soon.CS322: C# Programski jezikDoxBotPlugin: The DoxBotPlugin is a Plug-In for Ice-Chat9 that allows a user to use Icechat9 as both a normal IRC client and to switch on bot mode in certain channels to have DoxBotPlugin act on their behalf.dycom: DYCom??(DY Communication)???????????,?????????????????.????????????????. ??????????????????????,?????????????????。Eyes Protector: PL: Program pomagajacy w ochronie oczu przed przemeczeniem zwiazanym ze zbyt dluga praca przy komputerze. EN: ---kshell: ????Linux??????Lumia: This is Lumia project.MacroDoc: MacroDoc is an engine written in C# for composing documents from reusable pieces of structure and content.Mssql: This is Sql Server project.NETMF_for_STM32: This is the Codeplex project for NETMF for STM32 (F4 Edition). Ocular - a free, open source WYSIWYG editor for HTML: Ocular is a free C# WYSIWYG HTML editor, similar to Adobe Dreamweaver. We are always looking for contributors, so please help us!PeopleCredit: Prototype web service to maintain all employee credits.Project Server workflow: This workflow creates the project site for Basic project plan EPT when workflow task is approved.(This is the correction done over the Branching workflow provided with Project Server 2010 SDK). Workflow task is created using PSWApprovalTask Content type in Project Server Workflow Task List. Quick Reminder: PL: Program pomagajacy zapisac szybkie przypomnienia podczas pracy przy komputerze. EN: ---Random Projects: My random projects...Recommendation Engine Demo: How does the Amazon recommendation works? This is about visualizing the item to item collaborations filtering mechanism using a item-to-item matrix table. The item-to-item matrix, the vectors and the calculated data values are displayed. There are n different items and the item recommendation can display up to m items. There are implemented different item-to-item neighborhood functions. A simple max count of seen neighbor items, the Cosine Similarity and the Jaccard Index. A t...SaveSeaTurtle: Sea TurtleSharpGpx: SharpGpx implements an object model for reading and writing GPX (GPS eXchange Format).SlimDo: SlimDo is a scripting language coded in C#Spring: This is Spring.Net projectSQL Server Quick Tools Pack: SQL Server Quick Tools Pack for your sql server SuLD framework: Supported Link Discovery framework (SuLD) is a tool to discover links to multiple Linked Data datasets. Finding is supported by various features like synonym module or autocomplete.TQuery.Net: .Net??????WAAP - World of warcraft Auction house Analysis Project: A project in which we try to analyse prices and auctioneers on the various World of Warcraft Auction housesxhttp.net: The Xhttp.Net framework is a dotnet implementation of the Extended Hypertext Transfer Protocol (http://www.xhttp.org), with simple service integration, full arguments support including Base64 and DateTime, single and multiple asynchronous requests, data streaming, remote API creation from XHTTP service schemas, and a runtime plugin architecture.

Read the article

A simple Dynamic Proxy

- by Abhijeet Patel

Frameworks such as EF4 and MOQ do what most developers consider "dark magic". For instance in EF4, when you use a POCO for an entity you can opt-in to get behaviors such as "lazy-loading" and "change tracking" at runtime merely by ensuring that your type has the following characteristics: The class must be public and not sealed. The class must have a public or protected parameter-less constructor. The class must have public or protected properties Adhere to this and your type is magically endowed with these behaviors without any additional programming on your part. Behind the scenes the framework subclasses your type at runtime and creates a "dynamic proxy" which has these additional behaviors and when you navigate properties of your POCO, the framework replaces the POCO type with derived type instances. The MOQ framework does simlar magic. Let's say you have a simple interface: public interface IFoo { int GetNum(); } We can verify that the GetNum() was invoked on a mock like so: var mock = new Mock<IFoo>(MockBehavior.Default); mock.Setup(f => f.GetNum()); var num = mock.Object.GetNum(); mock.Verify(f => f.GetNum()); Beind the scenes the MOQ framework is generating a dynamic proxy by implementing IFoo at runtime. the call to moq.Object returns the dynamic proxy on which we then call "GetNum" and then verify that this method was invoked. No dark magic at all, just clever programming is what's going on here, just not visible and hence appears magical! Let's create a simple dynamic proxy generator which accepts an interface type and dynamically creates a proxy implementing the interface type specified at runtime. public static class DynamicProxyGenerator { public static T GetInstanceFor<T>() { Type typeOfT = typeof(T); var methodInfos = typeOfT.GetMethods(); AssemblyName assName = new AssemblyName("testAssembly"); var assBuilder = AppDomain.CurrentDomain.DefineDynamicAssembly(assName, AssemblyBuilderAccess.RunAndSave); var moduleBuilder = assBuilder.DefineDynamicModule("testModule", "test.dll"); var typeBuilder = moduleBuilder.DefineType(typeOfT.Name + "Proxy", TypeAttributes.Public); typeBuilder.AddInterfaceImplementation(typeOfT); var ctorBuilder = typeBuilder.DefineConstructor( MethodAttributes.Public, CallingConventions.Standard, new Type[] { }); var ilGenerator = ctorBuilder.GetILGenerator(); ilGenerator.EmitWriteLine("Creating Proxy instance"); ilGenerator.Emit(OpCodes.Ret); foreach (var methodInfo in methodInfos) { var methodBuilder = typeBuilder.DefineMethod( methodInfo.Name, MethodAttributes.Public | MethodAttributes.Virtual, methodInfo.ReturnType, methodInfo.GetParameters().Select(p => p.GetType()).ToArray() ); var methodILGen = methodBuilder.GetILGenerator(); methodILGen.EmitWriteLine("I'm a proxy"); if (methodInfo.ReturnType == typeof(void)) { methodILGen.Emit(OpCodes.Ret); } else { if (methodInfo.ReturnType.IsValueType || methodInfo.ReturnType.IsEnum) { MethodInfo getMethod = typeof(Activator).GetMethod(/span>"CreateInstance",new Type[]{typeof((Type)}); LocalBuilder lb = methodILGen.DeclareLocal(methodInfo.ReturnType); methodILGen.Emit(OpCodes.Ldtoken, lb.LocalType); methodILGen.Emit(OpCodes.Call, typeofype).GetMethod("GetTypeFromHandle")); )); methodILGen.Emit(OpCodes.Callvirt, getMethod); methodILGen.Emit(OpCodes.Unbox_Any, lb.LocalType); } else { methodILGen.Emit(OpCodes.Ldnull); } methodILGen.Emit(OpCodes.Ret); } typeBuilder.DefineMethodOverride(methodBuilder, methodInfo); } Type constructedType = typeBuilder.CreateType(); var instance = Activator.CreateInstance(constructedType); return (T)instance; } } Dynamic proxies are created by calling into the following main types: AssemblyBuilder, TypeBuilder, Modulebuilder and ILGenerator. These types enable dynamically creating an assembly and emitting .NET modules and types in that assembly, all using IL instructions. Let's break down the code above a bit and examine it piece by piece Type typeOfT = typeof(T); var methodInfos = typeOfT.GetMethods(); AssemblyName assName = new AssemblyName("testAssembly"); var assBuilder = AppDomain.CurrentDomain.DefineDynamicAssembly(assName, AssemblyBuilderAccess.RunAndSave); var moduleBuilder = assBuilder.DefineDynamicModule("testModule", "test.dll"); var typeBuilder = moduleBuilder.DefineType(typeOfT.Name + "Proxy", TypeAttributes.Public); We are instructing the runtime to create an assembly caled "test.dll"and in this assembly we then emit a new module called "testModule". We then emit a new type definition of name "typeName"Proxy into this new module. This is the definition for the "dynamic proxy" for type T typeBuilder.AddInterfaceImplementation(typeOfT); var ctorBuilder = typeBuilder.DefineConstructor( MethodAttributes.Public, CallingConventions.Standard, new Type[] { }); var ilGenerator = ctorBuilder.GetILGenerator(); ilGenerator.EmitWriteLine("Creating Proxy instance"); ilGenerator.Emit(OpCodes.Ret); The newly created type implements type T and defines a default parameterless constructor in which we emit a call to Console.WriteLine. This call is not necessary but we do this so that we can see first hand that when the proxy is constructed, when our default constructor is invoked. var methodBuilder = typeBuilder.DefineMethod( methodInfo.Name, MethodAttributes.Public | MethodAttributes.Virtual, methodInfo.ReturnType, methodInfo.GetParameters().Select(p => p.GetType()).ToArray() ); We then iterate over each method declared on type T and add a method definition of the same name into our "dynamic proxy" definition if (methodInfo.ReturnType == typeof(void)) { methodILGen.Emit(OpCodes.Ret); } If the return type specified in the method declaration of T is void we simply return. if (methodInfo.ReturnType.IsValueType || methodInfo.ReturnType.IsEnum) { MethodInfo getMethod = typeof(Activator).GetMethod("CreateInstance", new Type[]{typeof(Type)}); LocalBuilder lb = methodILGen.DeclareLocal(methodInfo.ReturnType); methodILGen.Emit(OpCodes.Ldtoken, lb.LocalType); methodILGen.Emit(OpCodes.Call, typeof(Type).GetMethod("GetTypeFromHandle")); methodILGen.Emit(OpCodes.Callvirt, getMethod); methodILGen.Emit(OpCodes.Unbox_Any, lb.LocalType); } If the return type in the method declaration of T is either a value type or an enum, then we need to create an instance of the value type and return that instance the caller. In order to accomplish that we need to do the following: 1) Get a handle to the Activator.CreateInstance method 2) Declare a local variable which represents the Type of the return type(i.e the type object of the return type) specified on the method declaration of T(obtained from the MethodInfo) and push this Type object onto the evaluation stack. In reality a RuntimeTypeHandle is what is pushed onto the stack. 3) Invoke the "GetTypeFromHandle" method(a static method in the Type class) passing in the RuntimeTypeHandle pushed onto the stack previously as an argument, the result of this invocation is a Type object (representing the method's return type) which is pushed onto the top of the evaluation stack. 4) Invoke Activator.CreateInstance passing in the Type object from step 3, the result of this invocation is an instance of the value type boxed as a reference type and pushed onto the top of the evaluation stack. 5) Unbox the result and place it into the local variable of the return type defined in step 2 methodILGen.Emit(OpCodes.Ldnull); If the return type is a reference type then we just load a null onto the evaluation stack methodILGen.Emit(OpCodes.Ret); Emit a a return statement to return whatever is on top of the evaluation stack(null or an instance of a value type) back to the caller Type constructedType = typeBuilder.CreateType(); var instance = Activator.CreateInstance(constructedType); return (T)instance; Now that we have a definition of the "dynamic proxy" implementing all the methods declared on T, we can now create an instance of the proxy type and return that out typed as T. The caller can now invoke the generator and request a dynamic proxy for any type T. In our example when the client invokes GetNum() we get back "0". Lets add a new method on the interface called DayOfWeek GetDay() public interface IFoo { int GetNum(); DayOfWeek GetDay(); } When GetDay() is invoked, the "dynamic proxy" returns "Sunday" since that is the default value for the DayOfWeek enum This is a very trivial example of dynammic proxies, frameworks like MOQ have a way more sophisticated implementation of this paradigm where in you can instruct the framework to create proxies which return specified values for a method implementation.

Read the article

SQL SERVER – A Quick Look at Logging and Ideas around Logging

- by pinaldave

This blog post is written in response to the T-SQL Tuesday post on Logging. When someone talks about logging, personally I get lots of ideas about it. I have seen logging as a very generic term. Let me ask you this question first before I continue writing about logging. What is the first thing comes to your mind when you hear word “Logging”? Now ask the same question to the guy standing next to you. I am pretty confident that you will get a different answer from different people. I decided to do this activity and asked 5 SQL Server person the same question. Question: What is the first thing comes to your mind when you hear the word “Logging”? Strange enough I got a different answer every single time. Let me just list what answer I got from my friends. Let us go over them one by one. Output Clause The very first person replied output clause. Pretty interesting answer to start with. I see what exactly he was thinking. SQL Server 2005 has introduced a new OUTPUT clause. OUTPUT clause has access to inserted and deleted tables (virtual tables) just like triggers. OUTPUT clause can be used to return values to client clause. OUTPUT clause can be used with INSERT, UPDATE, or DELETE to identify the actual rows affected by these statements. Here are some references for Output Clause: OUTPUT Clause Example and Explanation with INSERT, UPDATE, DELETE Reasons for Using Output Clause – Quiz Tips from the SQL Joes 2 Pros Development Series – Output Clause in Simple Examples Error Logs I was expecting someone to mention Error logs when it is about logging. The error log is the most looked place when there is any error either with the application or there is an error with the operating system. I have kept the policy to check my server’s error log every day. The reason is simple – enough time in my career I have figured out that when I am looking at error logs I find something which I was not expecting. There are cases, when I noticed errors in the error log and I fixed them before end user notices it. Other common practices I always tell my DBA friends to do is that when any error happens they should find relevant entries in the error logs and document the same. It is quite possible that they will see the same error in the error log and able to fix the error based on the knowledge base which they have created. There can be many different kinds of error log files exists in SQL Server as well – 1) SQL Server Error Logs 2) Windows Event Log 3) SQL Server Agent Log 4) SQL Server Profile Log 5) SQL Server Setup Log etc. Here are some references for Error Logs: Recycle Error Log – Create New Log file without Server Restart SQL Error Messages Change Data Capture I got surprised with this answer. I think more than the answer I was surprised by the person who had answered me this one. I always thought he was expert in HTML, JavaScript but I guess, one should never assume about others. Indeed one of the cool logging feature is Change Data Capture. Change Data Capture records INSERTs, UPDATEs, and DELETEs applied to SQL Server tables, and makes a record available of what changed, where, and when, in simple relational ‘change tables’ rather than in an esoteric chopped salad of XML. These change tables contain columns that reflect the column structure of the source table you have chosen to track, along with the metadata needed to understand the changes that have been made. Here are some references for Change Data Capture: Introduction to Change Data Capture (CDC) in SQL Server 2008 Tuning the Performance of Change Data Capture in SQL Server 2008 Download Script of Change Data Capture (CDC) CDC and TRUNCATE – Cannot truncate table because it is published for replication or enabled for Change Data Capture Dynamic Management View (DMV) I like this answer. If asked I would have not come up with DMV right away but in the spirit of the original question, I think DMV does log the data. DMV logs or stores or records the various data and activity on the SQL Server. Dynamic management views return server state information that can be used to monitor the health of a server instance, diagnose problems, and tune performance. One can get plethero of information from DMVs – High Availability Status, Query Executions Details, SQL Server Resources Status etc. Here are some references for Dynamic Management View (DMV): SQL SERVER – Denali – DMV Enhancement – sys.dm_exec_query_stats – New Columns DMV – sys.dm_os_windows_info – Information about Operating System DMV – sys.dm_os_wait_stats Explanation – Wait Type – Day 3 of 28 DMV sys.dm_exec_describe_first_result_set_for_object – Describes the First Result Metadata for the Module Transaction Log Impact Detection Using DMV – dm_tran_database_transactions Log Files I almost flipped with this final answer from my friend. This should be probably the first answer. Yes, indeed log file logs the SQL Server activities. One can write infinite things about log file. SQL Server uses log file with the extension .ldf to manage transactions and maintain database integrity. Log file ensures that valid data is written out to database and system is in a consistent state. Log files are extremely useful in case of the database failures as with the help of full backup file database can be brought in the desired state (point in time recovery is also possible). SQL Server database has three recovery models – 1) Simple, 2) Full and 3) Bulk Logged. Each of the model uses the .ldf file for performing various activities. It is very important to take the backup of the log files (along with full backup) as one never knows when backup of the log file come into the action and save the day! How to Stop Growing Log File Too Big Reduce the Virtual Log Files (VLFs) from LDF file Log File Growing for Model Database – model Database Log File Grew Too Big master Database Log File Grew Too Big SHRINKFILE and TRUNCATE Log File in SQL Server 2008 Can I just say I loved this month’s T-SQL Tuesday Question. It really provoked very interesting conversation around me. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Optimization, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

Read the article

ODEE Green Field (Windows) Part 5 - Deployment and Validation

- by AndyL-Oracle

And here we are, almost finished with our installation of Oracle Documaker Enterprise Edition ("ODEE") in a Windows green field environment. Let's recap what we've done so far: In part 1, I went over the basic process that I intended to show with installing an ODEE on a green field server. I walked you through the basic installation of Oracle 11g database In part 2, I covered the installation of WebLogic application server. In part 3, I showed you how to install SOA Suite for WebLogic. In part 4, we did the first part of the installation of ODEE itself. What remains after all of that, is the deployment of the ODEE components onto the database and application server - so let's get to it! DATABASE First, we'll deploy the schemas to the database. The schemas are created during the ODEE installation according to the responses provided during the install process. To deploy the schemas, you'll need to login to the database server in your green field environment. Open a command line and CD into ODEE_HOME\documaker\database\oracle11g.Run SQLPLUS as SYSDBA and execute dmkr_admin.sql: sqlplus / as sysdba @dmkr_admin.sql Execute dmkr_asline.sql, dmkr_admin_correspondence_example.sql. If you require additional languages, run the appropriate SQL scripts (e.g. dmkr_asline_es.sql for Spanish). APPLICATION SERVER Next, we'll deploy the WebLogic domain and it's components - Documaker web services, Documaker Interactive, Documaker dashboard, and more. To deploy the components, you'll need to login to the application server in your green field environment. 1. Open Windows Explorer and navigate to ODEE_HOME\documaker\j2ee\weblogic\oracle11g\scripts.2. Using a text editor such as Notepad++, modify weblogic_installation_properties and set location of MIDDLEWARE_HOME and ODEE HOME. If you have used the defaults you’ll probably need to change the E: to C: and that’s it. Save the changes.3. Continuing in the same directory, use your text editor to modify set_middleware_env.cmd and set the drive and path to MIDDLEWARE_HOME. If you have used the defaults you’ll probably need to just change E: to C: and that’s it. Save the changes.4. In the same directory, execute wls_create_domain.cmd by double-clicking it. This should run to completion. If it does not, review any errors and correct them, and rerun the script.5. In the same directory, execute wls_add_correspondence.cmd by double-clicking it - again this should run to completion. 6. Next, we'll start the AdminServer - this is the main WebLogic domain server. To start it, use Windows Explorer and navigate to MIDDLEWARE_HOME\user_projects\domains\idocumaker_domain. Double-click startWebLogic.cmd and the server startup will begin. Once you see output that indicates that the server status changed to RUNNING you may proceed. a. Note: if you saw database connection errors, you probably didn’t make sure your database name and connection type match. You can change this manually in the WebLogic Console. Open a browser and navigate to http://localhost:7001/console (replace localhost with the name of your application server host if you aren't opening the browser on the server), and login with the the weblogic credential you provided in the ODEE installation process. b. Once you're logged in, open Services?Data Sources. Select dmkr_admin and click Connection Pool. c. The end of the URL should match the connection type you chose. If you chose ServiceName, the URL should be: jdbc:oracle:thin:@//<hostname>:1521/<serviceName> and if you chose SID, the URL should be: jdbc:oracle:thin:@//<hostname>:1521/<SIDname> d. An example serviceName is a fully qualified DNS-style name, e.g. "idmaker.us.oracle.com". (It does not need to actually resolve in DNS). An example SID is just a name, e.g. IDMAKER. e. Save the change and repeat for the data source dmkr_asline. f. You will also need to make the same changes in the ODEE_HOME/documaker/docfactory/config/context/.bindings file - open the file in a text editor, locate the URL lines and make the appropriate change, then save the file. 7. Back in the ODEE_HOME\documaker\j2ee\weblogic\oracle11g\scripts directory, execute create_users_groups.cmd. 8. In the same directory, execute create_users_groups_correspondence_example.cmd. 9. Open a browser and navigate to http://localhost:7001/jpsquery. Replace localhost with the name of your application server host if you aren't running the browser on the application server. If you changed the default port for the AdminServer from 7001, use the port you changed it to. You should see output like this: 10. Start the WebLogic managed servers by opening a command prompt and navigating to MIDDLEWARE_HOME/user_projects/domains/idocumaker_domain/bin/. When you start the servers listed below, you will be prompted to enter the WebLogic credentials to start the server. You can prevent this by providing the credential in the startManagedwebLogic.cmd file for the WLS_USER and WLS_PASS values. Note that the credential will be stored in cleartext. To start the server, type in the command shown. a. Start the JMS Server: ./startManagedWebLogic.cmd jms_server b. Start Dashboard/Documaker Administrator: ./startManagedWebLogic.cmd dmkr_server c. Start Documaker Interactive for Correspondence: ./startManagedWebLogic.cmd idm_server SOA Composites If you're planning on testing out the approval process components of BPEL that can be used with Documaker Interactive, then use the following steps to deploy the SOA composites. If you're not going to use BPEL, you can skip to the next section.1. Stop the servers listed in the previous section (Step 10) in the reverse order that they were started.2. Run the Domain configuration command: navigate to and execute MIDDLEWARE_HOME/wlserver_10.3/common/bin/config.cmd.3. Select Extend and click next. 4. Select the iDocumaker Domain and click Next. 5. Select the Oracle SOA Suite – 11.1.1.0 (this may automatically select other components which is OK). Click Next. 6. View the Configure JDBC resources screen. You should not make any changes. Click Next. 7. Check both connections and click Test Connections. After successful test, click Next. If the tests fail, something is broken. Go back to configure JDBC resources and check your service name/SID. 8. Check all schemas. Set a password (will be the same for all schemas). Enter the database information (service name, host name, port). Click Next. 9. Connections should test successfully. If not, go back and fix any errors. Click Next. 10. Click Next to pass through Optional Configuration. 11. Click Extend. 12. Click Done. 13. Open a terminal window and navigate to/execute: ODEE_HOME/documaker/j2ee/weblogic/oracle11g/bpel/antbuild.cmd14. Start the WebLogic Servers – AdminServer, jms_server, dmkr_server, idm_server. If you forgot how to do this, see the previous section Step 10. Note: if you previously changed the startManagedWebLogic.cmd script for WLS_USER and WLS_PASS you will need to make those changes again. 15. Start the WebLogic server soa_server1: MIDDLEWARE_HOME/user_projects/domains/idocumaker_domain/bin/startManagedWebLogic.cmd soa_server116. Open a browser to http://localhost:7001/console and login. 17. Navigate to Services?Data Sources and select DMKR_ASLINE. 18. Click the Targets tab. Check soa_server1, then click Save. Repeat for the DMKR_ADMIN data source. 19. Open a command prompt and navigate to ODEE_HOME/j2ee/weblogic/oracle11g/scripts, then execute deploy_soa.cmd. That's it! (As if that wasn't enough?) DOCUMAKER Deploy the sample MRL resources by navigating to/executing ODEE_HOME/documaker/mstrres/dmres/deploysamplemrl.bat. You should see approximately 500 resources deployed into the database. Start the Factory Services. Start?Run?services.msc. Locate the service named "ODDF xxxx" and right-click, select Start. Note that each Assembly Line has a separate Factory setup, including its own Factory service and Docupresentment service. The services are named for the assembly line and the machine on which they are installed (because you could have multiple machines servicing a single assembly line, so this allows for easy scripting to control all the services if you choose to do so. Repeat for the Docupresentment service. Note that each Assembly Line has a separate Docupresentment. Using Windows Explorer, navigate to ODEE_HOME/documaker/mstrres/dmres/input and select one of the XML files, and copy it into ODEE_HOME/documaker/hotdirectory. Note: if you chose a different hot directory during installation, copy the file there instead. Momentarily you should see the XML file disappear! Open browser and navigate to http://localhost:10001/DocumakerDashboard (previous versions 12.0-12.2 use http://localhost:10001/dashboard) and verify that job processed successfully. Note that some transactions may fail if you do not have a properly configured email server, and this is ok. You can set up a simple SMTP server (just search the internet for "SMTP developer" and you'll get several to choose from. So... that's it? Where are we at this point? You now have a completely functional ODEE installation, from soup to nuts as they say. You can further expand your installation by doing some of the following activities: clustering WebLogic services configuring WebLogic for redundancy configuring Oracle 11g for RAC adding additional Factory servers for redundancy/processing capacity setting up a real MRL (instead of the sample resources) testing Documaker Web Services for job submission and more! I certainly hope you've enjoyed this and find it useful. If you find yourself running into trouble, visit the Oracle Community for Documaker - there is plenty of activity there and you can ask questions. For more concentrated assistance, you can engage an Oracle consultant who is a subject matter expert to assist you. Feel free to email me [andy (dot) little (at) oracle (dot) com] and I can connect you with the appropriate resource to get started. Best of luck! -Andy

Read the article

"domain crashed" when creating new Xen instance

- by user47650

I have downloaded a Xen virtual machine image from the appscale project, and I am trying to start it up. However once I run the command; xm create -c -f xen.conf The instance immediately crashes and provides no console output. however it produces logs that I have posted below. but this is the error; [2011-03-01 12:34:03 xend.XendDomainInfo 3580] WARNING (XendDomainInfo:1178) Domain has crashed: name=appscale-1.4b id=10. I have managed to mount the root.img file locally and verify that it is actually an ext3 file system. I am running Xen 3.0.3 that is a stock RPM from the CentOS 5 repos; # rpm -qa | grep -i xen xen-libs-3.0.3-105.el5_5.5 xen-3.0.3-105.el5_5.5 xen-libs-3.0.3-105.el5_5.5 kernel-xen-2.6.18-194.32.1.el5 any suggestions on how to proceed with troubleshooting? (i am a newbie to Xen) so far I have enabled console logging, but the log file is empty. ==> domain-builder-ng.log <== xc_dom_allocate: cmdline=" ip=:1.2.3.4::::eth0:dhcp root=/dev/sda1 ro xencons=tty console=tty1 console=hvc0 debugger=y debug=y sync_console", features="" xc_dom_kernel_file: filename="/boot/vmlinuz-2.6.27-7-server" xc_dom_malloc_filemap : 2284 kB xc_dom_ramdisk_file: filename="/boot/initrd.img-2.6.27-7-server" xc_dom_malloc_filemap : 9005 kB xc_dom_boot_xen_init: ver 3.1, caps xen-3.0-x86_64 xen-3.0-x86_32p xc_dom_parse_image: called xc_dom_find_loader: trying ELF-generic loader ... failed xc_dom_find_loader: trying Linux bzImage loader ... xc_dom_malloc : 9875 kB xc_dom_do_gunzip: unzip ok, 0x234bb2 -> 0x9a4de0 OK elf_parse_binary: phdr: paddr=0x200000 memsz=0x447000 elf_parse_binary: phdr: paddr=0x647000 memsz=0xab888 elf_parse_binary: phdr: paddr=0x6f3000 memsz=0x908 elf_parse_binary: phdr: paddr=0x6f4000 memsz=0x1c2f9c elf_parse_binary: memory: 0x200000 -> 0x8b6f9c elf_xen_parse_note: GUEST_OS = "linux" elf_xen_parse_note: GUEST_VERSION = "2.6" elf_xen_parse_note: XEN_VERSION = "xen-3.0" elf_xen_parse_note: VIRT_BASE = 0xffffffff80000000 elf_xen_parse_note: ENTRY = 0xffffffff8071e200 elf_xen_parse_note: HYPERCALL_PAGE = 0xffffffff80209000 elf_xen_parse_note: FEATURES = "!writable_page_tables|pae_pgdir_above_4gb" elf_xen_parse_note: PAE_MODE = "yes" elf_xen_parse_note: LOADER = "generic" elf_xen_parse_note: unknown xen elf note (0xd) elf_xen_parse_note: SUSPEND_CANCEL = 0x1 elf_xen_parse_note: HV_START_LOW = 0xffff800000000000 elf_xen_parse_note: PADDR_OFFSET = 0x0 elf_xen_addr_calc_check: addresses: virt_base = 0xffffffff80000000 elf_paddr_offset = 0x0 virt_offset = 0xffffffff80000000 virt_kstart = 0xffffffff80200000 virt_kend = 0xffffffff808b6f9c virt_entry = 0xffffffff8071e200 xc_dom_parse_elf_kernel: xen-3.0-x86_64: 0xffffffff80200000 -> 0xffffffff808b6f9c xc_dom_mem_init: mem 1024 MB, pages 0x40000 pages, 4k each xc_dom_mem_init: 0x40000 pages xc_dom_boot_mem_init: called x86_compat: guest xen-3.0-x86_64, address size 64 xc_dom_malloc : 2048 kB ==> xend.log <== [2011-03-01 12:34:01 xend.XendDomainInfo 3580] INFO (XendDomainInfo:2330) Dev 2049 still active, looping... [2011-03-01 12:34:01 xend.XendDomainInfo 3580] INFO (XendDomainInfo:2330) Dev 2049 still active, looping... [2011-03-01 12:34:01 xend.XendDomainInfo 3580] INFO (XendDomainInfo:2330) Dev 2049 still active, looping... [2011-03-01 12:34:01 xend.XendDomainInfo 3580] INFO (XendDomainInfo:2330) Dev 2049 still active, looping... [2011-03-01 12:34:01 xend.XendDomainInfo 3580] INFO (XendDomainInfo:957) Dev 0 still active, looping... [2011-03-01 12:34:01 xend.XendDomainInfo 3580] INFO (XendDomainInfo:957) Dev 0 still active, looping... [2011-03-01 12:34:01 xend.XendDomainInfo 3580] INFO (XendDomainInfo:957) Dev 0 still active, looping... [2011-03-01 12:34:02 xend.XendDomainInfo 3580] INFO (XendDomainInfo:957) Dev 0 still active, looping... [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:2114) UUID Created: True [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:2115) Devices to release: [], domid = 9 [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:2127) Releasing PVFB backend devices ... [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:207) XendDomainInfo.create(['domain', ['domid', 9], ['uuid', 'd5f22dd4-8dc2-f51f-84e9-eea7d71ea1d0'], ['vcpus', 1], ['vcpu_avail', 1], ['cpu_cap', 0], ['cpu_weight', 256], ['memory', 1024], ['shadow_memory', 0], ['maxmem', 1024], ['features', ''], ['name', 'appscale-1.4b'], ['on_poweroff', 'destroy'], ['on_reboot', 'restart'], ['on_crash', 'restart'], ['image', ['linux', ['kernel', '/boot/vmlinuz-2.6.27-7-server'], ['ramdisk', '/boot/initrd.img-2.6.27-7-server'], ['ip', ':1.2.3.4::::eth0:dhcp'], ['root', '/dev/sda1 ro'], ['args', 'xencons=tty console=tty1 console=hvc0 debugger=y debug=y sync_console']]], ['cpus', []], ['device', ['vif', ['backend', 0], ['script', 'vif-bridge'], ['mac', '00:16:3B:72:10:E4']]], ['device', ['vbd', ['backend', 0], ['dev', 'sda1:disk'], ['uname', 'file:/local/xen/domains/appscale1.4/root.img'], ['mode', 'w']]], ['state', '----c-'], ['shutdown_reason', 'crash'], ['cpu_time', 0.000339131], ['online_vcpus', 1], ['up_time', '0.952092885971'], ['start_time', '1299011639.92'], ['store_mfn', 1169289], ['console_mfn', 1169288]]) [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:329) parseConfig: config is ['domain', ['domid', 9], ['uuid', 'd5f22dd4-8dc2-f51f-84e9-eea7d71ea1d0'], ['vcpus', 1], ['vcpu_avail', 1], ['cpu_cap', 0], ['cpu_weight', 256], ['memory', 1024], ['shadow_memory', 0], ['maxmem', 1024], ['features', ''], ['name', 'appscale-1.4b'], ['on_poweroff', 'destroy'], ['on_reboot', 'restart'], ['on_crash', 'restart'], ['image', ['linux', ['kernel', '/boot/vmlinuz-2.6.27-7-server'], ['ramdisk', '/boot/initrd.img-2.6.27-7-server'], ['ip', ':1.2.3.4::::eth0:dhcp'], ['root', '/dev/sda1 ro'], ['args', 'xencons=tty console=tty1 console=hvc0 debugger=y debug=y sync_console']]], ['cpus', []], ['device', ['vif', ['backend', 0], ['script', 'vif-bridge'], ['mac', '00:16:3B:72:10:E4']]], ['device', ['vbd', ['backend', 0], ['dev', 'sda1:disk'], ['uname', 'file:/local/xen/domains/appscale1.4/root.img'], ['mode', 'w']]], ['state', '----c-'], ['shutdown_reason', 'crash'], ['cpu_time', 0.000339131], ['online_vcpus', 1], ['up_time', '0.952092885971'], ['start_time', '1299011639.92'], ['store_mfn', 1169289], ['console_mfn', 1169288]] [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:446) parseConfig: result is {'features': '', 'image': ['linux', ['kernel', '/boot/vmlinuz-2.6.27-7-server'], ['ramdisk', '/boot/initrd.img-2.6.27-7-server'], ['ip', ':1.2.3.4::::eth0:dhcp'], ['root', '/dev/sda1 ro'], ['args', 'xencons=tty console=tty1 console=hvc0 debugger=y debug=y sync_console']], 'cpus': [], 'vcpu_avail': 1, 'backend': [], 'uuid': 'd5f22dd4-8dc2-f51f-84e9-eea7d71ea1d0', 'on_reboot': 'restart', 'cpu_weight': 256.0, 'memory': 1024, 'cpu_cap': 0, 'localtime': None, 'timer_mode': None, 'start_time': 1299011639.9200001, 'on_poweroff': 'destroy', 'on_crash': 'restart', 'device': [('vif', ['vif', ['backend', 0], ['script', 'vif-bridge'], ['mac', '00:16:3B:72:10:E4']]), ('vbd', ['vbd', ['backend', 0], ['dev', 'sda1:disk'], ['uname', 'file:/local/xen/domains/appscale1.4/root.img'], ['mode', 'w']])], 'bootloader': None, 'maxmem': 1024, 'shadow_memory': 0, 'name': 'appscale-1.4b', 'bootloader_args': None, 'vcpus': 1, 'cpu': None} [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:1784) XendDomainInfo.construct: None [2011-03-01 12:34:02 xend 3580] DEBUG (balloon:145) Balloon: 3034420 KiB free; need 4096; done. [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:1953) XendDomainInfo.initDomain: 10 256.0 [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:1994) _initDomain:shadow_memory=0x0, maxmem=0x400, memory=0x400. [2011-03-01 12:34:02 xend 3580] DEBUG (balloon:145) Balloon: 3034412 KiB free; need 1048576; done. [2011-03-01 12:34:02 xend 3580] INFO (image:139) buildDomain os=linux dom=10 vcpus=1 [2011-03-01 12:34:02 xend 3580] DEBUG (image:208) domid = 10 [2011-03-01 12:34:02 xend 3580] DEBUG (image:209) memsize = 1024 [2011-03-01 12:34:02 xend 3580] DEBUG (image:210) image = /boot/vmlinuz-2.6.27-7-server [2011-03-01 12:34:02 xend 3580] DEBUG (image:211) store_evtchn = 1 [2011-03-01 12:34:02 xend 3580] DEBUG (image:212) console_evtchn = 2 [2011-03-01 12:34:02 xend 3580] DEBUG (image:213) cmdline = ip=:1.2.3.4::::eth0:dhcp root=/dev/sda1 ro xencons=tty console=tty1 console=hvc0 debugger=y debug=y sync_console [2011-03-01 12:34:02 xend 3580] DEBUG (image:214) ramdisk = /boot/initrd.img-2.6.27-7-server [2011-03-01 12:34:02 xend 3580] DEBUG (image:215) vcpus = 1 [2011-03-01 12:34:02 xend 3580] DEBUG (image:216) features = ==> domain-builder-ng.log <== xc_dom_build_image: called xc_dom_alloc_segment: kernel : 0xffffffff80200000 -> 0xffffffff808b7000 (pfn 0x200 + 0x6b7 pages) xc_dom_pfn_to_ptr: domU mapping: pfn 0x200+0x6b7 at 0x2aaaab5f6000 elf_load_binary: phdr 0 at 0x0x2aaaab5f6000 -> 0x0x2aaaaba3d000 elf_load_binary: phdr 1 at 0x0x2aaaaba3d000 -> 0x0x2aaaabae8888 elf_load_binary: phdr 2 at 0x0x2aaaabae9000 -> 0x0x2aaaabae9908 elf_load_binary: phdr 3 at 0x0x2aaaabaea000 -> 0x0x2aaaabb9a004 xc_dom_alloc_segment: ramdisk : 0xffffffff808b7000 -> 0xffffffff82382000 (pfn 0x8b7 + 0x1acb pages) xc_dom_malloc : 160 kB xc_dom_pfn_to_ptr: domU mapping: pfn 0x8b7+0x1acb at 0x2aaab0000000 xc_dom_do_gunzip: unzip ok, 0x8cb5e7 -> 0x1aca210 xc_dom_alloc_segment: phys2mach : 0xffffffff82382000 -> 0xffffffff82582000 (pfn 0x2382 + 0x200 pages) xc_dom_pfn_to_ptr: domU mapping: pfn 0x2382+0x200 at 0x2aaab1acb000 xc_dom_alloc_page : start info : 0xffffffff82582000 (pfn 0x2582) xc_dom_alloc_page : xenstore : 0xffffffff82583000 (pfn 0x2583) xc_dom_alloc_page : console : 0xffffffff82584000 (pfn 0x2584) nr_page_tables: 0x0000ffffffffffff/48: 0xffff000000000000 -> 0xffffffffffffffff, 1 table(s) nr_page_tables: 0x0000007fffffffff/39: 0xffffff8000000000 -> 0xffffffffffffffff, 1 table(s) nr_page_tables: 0x000000003fffffff/30: 0xffffffff80000000 -> 0xffffffffbfffffff, 1 table(s) nr_page_tables: 0x00000000001fffff/21: 0xffffffff80000000 -> 0xffffffff827fffff, 20 table(s) xc_dom_alloc_segment: page tables : 0xffffffff82585000 -> 0xffffffff8259c000 (pfn 0x2585 + 0x17 pages) xc_dom_pfn_to_ptr: domU mapping: pfn 0x2585+0x17 at 0x2aaab1ccb000 xc_dom_alloc_page : boot stack : 0xffffffff8259c000 (pfn 0x259c) xc_dom_build_image : virt_alloc_end : 0xffffffff8259d000 xc_dom_build_image : virt_pgtab_end : 0xffffffff82800000 xc_dom_boot_image: called arch_setup_bootearly: doing nothing xc_dom_compat_check: supported guest type: xen-3.0-x86_64 <= matches xc_dom_compat_check: supported guest type: xen-3.0-x86_32p xc_dom_update_guest_p2m: dst 64bit, pages 0x40000 clear_page: pfn 0x2584, mfn 0x11d788 clear_page: pfn 0x2583, mfn 0x11d789 xc_dom_pfn_to_ptr: domU mapping: pfn 0x2582+0x1 at 0x2aaab1ce2000 start_info_x86_64: called setup_hypercall_page: vaddr=0xffffffff80209000 pfn=0x209 domain builder memory footprint allocated malloc : 12139 kB anon mmap : 0 bytes mapped file mmap : 11289 kB domU mmap : 35 MB arch_setup_bootlate: shared_info: pfn 0x0, mfn 0xd6fe1 shared_info_x86_64: called vcpu_x86_64: called vcpu_x86_64: cr3: pfn 0x2585 mfn 0x11d787 launch_vm: called, ctxt=0x97b21f8 xc_dom_release: called ==> xend.log <== [2011-03-01 12:34:02 xend 3580] DEBUG (DevController:114) DevController: writing {'mac': '00:16:3B:72:10:E4', 'handle': '0', 'protocol': 'x86_64-abi', 'backend-id': '0', 'state': '1', 'backend': '/local/domain/0/backend/vif/10/0'} to /local/domain/10/device/vif/0. [2011-03-01 12:34:02 xend 3580] DEBUG (DevController:116) DevController: writing {'domain': 'appscale-1.4b', 'handle': '0', 'script': '/etc/xen/scripts/vif-bridge', 'state': '1', 'frontend': '/local/domain/10/device/vif/0', 'mac': '00:16:3B:72:10:E4', 'online': '1', 'frontend-id': '10'} to /local/domain/0/backend/vif/10/0. [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:634) Checking for duplicate for uname: /local/xen/domains/appscale1.4/root.img [file:/local/xen/domains/appscale1.4/root.img], dev: sda1:disk, mode: w [2011-03-01 12:34:02 xend 3580] DEBUG (blkif:27) exception looking up device number for sda1:disk: [Errno 2] No such file or directory: '/dev/sda1:disk' [2011-03-01 12:34:02 xend 3580] DEBUG (blkif:27) exception looking up device number for sda1: [Errno 2] No such file or directory: '/dev/sda1' [2011-03-01 12:34:02 xend 3580] DEBUG (DevController:114) DevController: writing {'virtual-device': '2049', 'device-type': 'disk', 'protocol': 'x86_64-abi', 'backend-id': '0', 'state': '1', 'backend': '/local/domain/0/backend/vbd/10/2049'} to /local/domain/10/device/vbd/2049. [2011-03-01 12:34:02 xend 3580] DEBUG (DevController:116) DevController: writing {'domain': 'appscale-1.4b', 'frontend': '/local/domain/10/device/vbd/2049', 'format': 'raw', 'dev': 'sda1', 'state': '1', 'params': '/local/xen/domains/appscale1.4/root.img', 'mode': 'w', 'online': '1', 'frontend-id': '10', 'type': 'file'} to /local/domain/0/backend/vbd/10/2049. [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:993) Storing VM details: {'shadow_memory': '0', 'uuid': 'd5f22dd4-8dc2-f51f-84e9-eea7d71ea1d0', 'on_reboot': 'restart', 'start_time': '1299011642.74', 'on_poweroff': 'destroy', 'name': 'appscale-1.4b', 'xend/restart_count': '0', 'vcpus': '1', 'vcpu_avail': '1', 'memory': '1024', 'on_crash': 'restart', 'image': "(linux (kernel /boot/vmlinuz-2.6.27-7-server) (ramdisk /boot/initrd.img-2.6.27-7-server) (ip :1.2.3.4::::eth0:dhcp) (root '/dev/sda1 ro') (args 'xencons=tty console=tty1 console=hvc0 debugger=y debug=y sync_console'))", 'maxmem': '1024'} [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:1028) Storing domain details: {'console/ring-ref': '1169288', 'console/port': '2', 'name': 'appscale-1.4b', 'console/limit': '1048576', 'vm': '/vm/d5f22dd4-8dc2-f51f-84e9-eea7d71ea1d0', 'domid': '10', 'cpu/0/availability': 'online', 'memory/target': '1048576', 'store/ring-ref': '1169289', 'store/port': '1'} [2011-03-01 12:34:02 xend 3580] DEBUG (DevController:158) Waiting for devices vif. [2011-03-01 12:34:02 xend 3580] DEBUG (DevController:164) Waiting for 0. [2011-03-01 12:34:02 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:1250) XendDomainInfo.handleShutdownWatch [2011-03-01 12:34:02 xend 3580] DEBUG (DevController:509) hotplugStatusCallback /local/domain/0/backend/vif/10/0/hotplug-status. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:509) hotplugStatusCallback /local/domain/0/backend/vif/10/0/hotplug-status. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:523) hotplugStatusCallback 1. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:158) Waiting for devices usb. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:158) Waiting for devices vbd. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:164) Waiting for 2049. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:509) hotplugStatusCallback /local/domain/0/backend/vbd/10/2049/hotplug-status. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:509) hotplugStatusCallback /local/domain/0/backend/vbd/10/2049/hotplug-status. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:523) hotplugStatusCallback 1. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:158) Waiting for devices irq. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:158) Waiting for devices vkbd. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:158) Waiting for devices vfb. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:158) Waiting for devices pci. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:158) Waiting for devices ioports. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:158) Waiting for devices tap. [2011-03-01 12:34:03 xend 3580] DEBUG (DevController:158) Waiting for devices vtpm. [2011-03-01 12:34:03 xend.XendDomainInfo 3580] WARNING (XendDomainInfo:1178) Domain has crashed: name=appscale-1.4b id=10. [2011-03-01 12:34:03 xend.XendDomainInfo 3580] ERROR (XendDomainInfo:2654) VM appscale-1.4b restarting too fast (2.275545 seconds since the last restart). Refusing to restart to avoid loops. [2011-03-01 12:34:03 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:2189) XendDomainInfo.destroy: domid=10 ==> xen-hotplug.log <== Nothing to flush. ==> xend.log <== [2011-03-01 12:34:03 xend.XendDomainInfo 3580] INFO (XendDomainInfo:2330) Dev 2049 still active, looping... [2011-03-01 12:34:03 xend.XendDomainInfo 3580] INFO (XendDomainInfo:2330) Dev 2049 still active, looping... [2011-03-01 12:34:03 xend.XendDomainInfo 3580] INFO (XendDomainInfo:2330) Dev 2049 still active, looping... [2011-03-01 12:34:03 xend.XendDomainInfo 3580] INFO (XendDomainInfo:2330) Dev 2049 still active, looping... [2011-03-01 12:34:03 xend.XendDomainInfo 3580] INFO (XendDomainInfo:2330) Dev 2049 still active, looping... [2011-03-01 12:34:03 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:2114) UUID Created: True [2011-03-01 12:34:03 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:2115) Devices to release: [], domid = 10 [2011-03-01 12:34:03 xend.XendDomainInfo 3580] DEBUG (XendDomainInfo:2127) Releasing PVFB backend devices ... And this is the xen.conf file that I am using; # cat xen.conf # Configuration file for the Xen instance AppScale, created # bn VMBuilder kernel = '/boot/vmlinuz-2.6.27-7-server' ramdisk = '/boot/initrd.img-2.6.27-7-server' memory = 1024 vcpus = 1 root = '/dev/sda1 ro' disk = [ 'file:/local/xen/domains/appscale1.4/root.img,sda1,w', ] name = 'appscale-1.4b' dhcp = 'dhcp' vif = [ 'mac=00:16:3B:72:10:E4' ] on_poweroff = 'destroy' on_reboot = 'restart' on_crash = 'restart' extra = 'xencons=tty console=tty1 console=hvc0 debugger=y debug=y sync_console'

Read the article

How to launch LOV and Date dialogs using the keyboard

- by frank.nimphius

v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Normal 0 false false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Using the ADF Faces JavaScript API, developers can listen for user keyboard input in input components to filter or respond to specific characters or key combination. The JavaScript shown below can be used with an af:clientListener tag on af:inputListOfValues or af:inputDate. At runtime, the JavaScript code determines the component type it is executed on and either opens the LOV dialog or the input Date popup. <af:resource type="javascript"> /** * function to launch dialog if cursor is in LOV or * input date field * @param evt argument to capture the AdfUIInputEvent object */ function launchPopUpUsingF8(evt) { var component = evt.getSource(); if (evt.getKeyCode() == AdfKeyStroke.F8_KEY) { //check for input LOV component if (component.getTypeName() == 'AdfRichInputListOfValues') { AdfLaunchPopupEvent.queue(component, true); //event is handled on the client. Server does not need //to be notified evt.cancel(); } //check for input Date component else if (component.getTypeName() == 'AdfRichInputDate') { //the inputDate af:popup component ID always is ::pop var popupClientId = component.getAbsoluteLocator() + '::pop'; var popup = component.findComponent(popupClientId); var hints = {align : AdfRichPopup.ALIGN_END_AFTER, alignId : component.getAbsoluteLocator()}; popup.show(hints); //event is handled on the client. Server does not need //to be notified evt.cancel(); } } } </af:resource> The af:clientListener that calls the JavaScript is added as shown below. <af:inputDate label="Label 1" id="id1"> <af:clientListener method="launchPopUpUsingF8" type="keyDown"/> </af:inputDate> As you may have noticed, the call to open the popup is different for the af:inputListOfValues and the af:inputDate. For the list of values component, an ADF Faces AdfLaunchPopupEvent is queued with the LOV component passed s an argument. Launching the input date popup is a bit more complicate and requires you to lookup the implicit popup dialog and to open it manually. Because the popup is opened manually using the show() method on the af:popup component, the alignment of the dialog also needs to be handled manually. For this, the popup component specifies alignment hints, that for the ALIGN_END_AFTER hint aligns the dialog at the end and below the date component. The align Id hint specifies the component the dialog is relatively positioned to, which of course should be the input date field. The ADF Faces JavaScript API and how to use it is further explained in the Using JavaScript in ADF Faces Rich Client Applications whitepaper available from the Oracle Technology Network (OTN) http://www.oracle.com/technetwork/developer-tools/jdev/1-2011-javascript-302460.pdf An ADF Insider recording about JavaScript in ADF Faces can be watched from here http://download.oracle.com/otn_hosted_doc/jdeveloper/11gdemos/adf-insider-javascript/adf-insider-javascript.html

Read the article

Generate Strongly Typed Observable Events for the Reactive Extensions for .NET (Rx)

- by Bobby Diaz

I must have tried reading through the various explanations and introductions to the new Reactive Extensions for .NET before the concepts finally started sinking in. The article that gave me the ah-ha moment was over on SilverlightShow.net and titled Using Reactive Extensions in Silverlight. The author did a good job comparing the "normal" way of handling events vs. the new "reactive" methods. Admittedly, I still have more to learn about the Rx Framework, but I wanted to put together a sample project so I could start playing with the new Observable and IObservable<T> constructs. I decided to throw together a whiteboard application in Silverlight based on the Drawing with Rx example on the aforementioned article. At the very least, I figured I would learn a thing or two about a new technology, but my real goal is to create a fun application that I can share with the kids since they love drawing and coloring so much! Here is the code sample that I borrowed from the article: var mouseMoveEvent = Observable.FromEvent<MouseEventArgs>(this, "MouseMove"); var mouseLeftButtonDown = Observable.FromEvent<MouseButtonEventArgs>(this, "MouseLeftButtonDown"); var mouseLeftButtonUp = Observable.FromEvent<MouseButtonEventArgs>(this, "MouseLeftButtonUp"); var draggingEvents = from pos in mouseMoveEvent .SkipUntil(mouseLeftButtonDown) .TakeUntil(mouseLeftButtonUp) .Let(mm => mm.Zip(mm.Skip(1), (prev, cur) => new { X2 = cur.EventArgs.GetPosition(this).X, X1 = prev.EventArgs.GetPosition(this).X, Y2 = cur.EventArgs.GetPosition(this).Y, Y1 = prev.EventArgs.GetPosition(this).Y })).Repeat() select pos; draggingEvents.Subscribe(p => { Line line = new Line(); line.Stroke = new SolidColorBrush(Colors.Black); line.StrokeEndLineCap = PenLineCap.Round; line.StrokeLineJoin = PenLineJoin.Round; line.StrokeThickness = 5; line.X1 = p.X1; line.Y1 = p.Y1; line.X2 = p.X2; line.Y2 = p.Y2; this.LayoutRoot.Children.Add(line); }); One thing that was nagging at the back of my mind was having to deal with the event names as strings, as well as the verbose syntax for the Observable.FromEvent<TEventArgs>() method. I came up with a couple of static/helper classes to resolve both issues and also created a T4 template to auto-generate these helpers for any .NET type. Take the following code from the above example: var mouseMoveEvent = Observable.FromEvent<MouseEventArgs>(this, "MouseMove"); var mouseLeftButtonDown = Observable.FromEvent<MouseButtonEventArgs>(this, "MouseLeftButtonDown"); var mouseLeftButtonUp = Observable.FromEvent<MouseButtonEventArgs>(this, "MouseLeftButtonUp"); Turns into this with the new static Events class: var mouseMoveEvent = Events.Mouse.Move.On(this); var mouseLeftButtonDown = Events.Mouse.LeftButtonDown.On(this); var mouseLeftButtonUp = Events.Mouse.LeftButtonUp.On(this); Or better yet, just remove the variable declarations altogether: var draggingEvents = from pos in Events.Mouse.Move.On(this) .SkipUntil(Events.Mouse.LeftButtonDown.On(this)) .TakeUntil(Events.Mouse.LeftButtonUp.On(this)) .Let(mm => mm.Zip(mm.Skip(1), (prev, cur) => new { X2 = cur.EventArgs.GetPosition(this).X, X1 = prev.EventArgs.GetPosition(this).X, Y2 = cur.EventArgs.GetPosition(this).Y, Y1 = prev.EventArgs.GetPosition(this).Y })).Repeat() select pos; The Move, LeftButtonDown and LeftButtonUp members of the Events.Mouse class are readonly instances of the ObservableEvent<TTarget, TEventArgs> class that provide type-safe access to the events via the On() method. Here is the code for the class: using System; using System.Collections.Generic; using System.Linq; namespace System.Linq { /// <summary> /// Represents an event that can be managed via the <see cref="Observable"/> API. /// </summary> /// <typeparam name="TTarget">The type of the target.</typeparam> /// <typeparam name="TEventArgs">The type of the event args.</typeparam> public class ObservableEvent<TTarget, TEventArgs> where TEventArgs : EventArgs { /// <summary> /// Initializes a new instance of the <see cref="ObservableEvent"/> class. /// </summary> /// <param name="eventName">Name of the event.</param> protected ObservableEvent(String eventName) { EventName = eventName; } /// <summary> /// Registers the specified event name. /// </summary> /// <param name="eventName">Name of the event.</param> /// <returns></returns> public static ObservableEvent<TTarget, TEventArgs> Register(String eventName) { return new ObservableEvent<TTarget, TEventArgs>(eventName); } /// <summary> /// Creates an enumerable sequence of event values for the specified target. /// </summary> /// <param name="target">The target.</param> /// <returns></returns> public IObservable<IEvent<TEventArgs>> On(TTarget target) { return Observable.FromEvent<TEventArgs>(target, EventName); } /// <summary> /// Gets or sets the name of the event. /// </summary> /// <value>The name of the event.</value> public string EventName { get; private set; } } } And this is how it's used: /// <summary> /// Categorizes <see cref="ObservableEvents"/> by class and/or functionality. /// </summary> public static partial class Events { /// <summary> /// Implements a set of predefined <see cref="ObservableEvent"/>s /// for the <see cref="System.Windows.System.Windows.UIElement"/> class /// that represent mouse related events. /// </summary> public static partial class Mouse { /// <summary>Represents the MouseMove event.</summary> public static readonly ObservableEvent<UIElement, MouseEventArgs> Move = ObservableEvent<UIElement, MouseEventArgs>.Register("MouseMove"); // additional members omitted... } } The source code contains a static Events class with prefedined members for various categories (Key, Mouse, etc.). There is also an Events.tt template that you can customize to generate additional event categories for any .NET type. All you should have to do is add the name of your class to the types collection near the top of the template: types = new Dictionary<String, Type>() { //{ "Microsoft.Maps.MapControl.Map, Microsoft.Maps.MapControl", null } { "System.Windows.FrameworkElement, System.Windows", null }, { "Whiteboard.MainPage, Whiteboard", null } }; The template is also a bit rough at this point, but at least it generates code that *should* compile. Please let me know if you run into any issues with it. Some people have reported errors when trying to use T4 templates within a Silverlight project, but I was able to get it to work with a little black magic... You can download the source code for this project or play around with the live demo. Just be warned that it is at a very early stage so don't expect to find much today. I plan on adding alot more options like pen colors and sizes, saving, printing, etc. as time permits. HINT: hold down the ESC key to erase! Enjoy! Additional Resources Using Reactive Extensions in Silverlight DevLabs: Reactive Extensions for .NET (Rx) Rx Framework Part III - LINQ to Events - Generating GetEventName() Wrapper Methods using T4

Read the article

Improving SAS multipath to JBOD performance on Linux

- by user36825

Hello all I'm trying to optimize a storage setup on some Sun hardware with Linux. Any thoughts would be greatly appreciated. We have the following hardware: Sun Blade X6270 2* LSISAS1068E SAS controllers 2* Sun J4400 JBODs with 1 TB disks (24 disks per JBOD) Fedora Core 12 2.6.33 release kernel from FC13 (also tried with latest 2.6.31 kernel from FC12, same results) Here's the datasheet for the SAS hardware: http://www.sun.com/storage/storage_networking/hba/sas/PCIe.pdf It's using PCI Express 1.0a, 8x lanes. With a bandwidth of 250 MB/sec per lane, we should be able to do 2000 MB/sec per SAS controller. Each controller can do 3 Gb/sec per port and has two 4 port PHYs. We connect both PHYs from a controller to a JBOD. So between the JBOD and the controller we have 2 PHYs * 4 SAS ports * 3 Gb/sec = 24 Gb/sec of bandwidth, which is more than the PCI Express bandwidth. With write caching enabled and when doing big writes, each disk can sustain about 80 MB/sec (near the start of the disk). With 24 disks, that means we should be able to do 1920 MB/sec per JBOD. multipath { rr_min_io 100 uid 0 path_grouping_policy multibus failback manual path_selector "round-robin 0" rr_weight priorities alias somealias no_path_retry queue mode 0644 gid 0 wwid somewwid } I tried values of 50, 100, 1000 for rr_min_io, but it doesn't seem to make much difference. Along with varying rr_min_io I tried adding some delay between starting the dd's to prevent all of them writing over the same PHY at the same time, but this didn't make any difference, so I think the I/O's are getting properly spread out. According to /proc/interrupts, the SAS controllers are using a "IR-IO-APIC-fasteoi" interrupt scheme. For some reason only core #0 in the machine is handling these interrupts. I can improve performance slightly by assigning a separate core to handle the interrupts for each SAS controller: echo 2 /proc/irq/24/smp_affinity echo 4 /proc/irq/26/smp_affinity Using dd to write to the disk generates "Function call interrupts" (no idea what these are), which are handled by core #4, so I keep other processes off this core too. I run 48 dd's (one for each disk), assigning them to cores not dealing with interrupts like so: taskset -c somecore dd if=/dev/zero of=/dev/mapper/mpathx oflag=direct bs=128M oflag=direct prevents any kind of buffer cache from getting involved. None of my cores seem maxed out. The cores dealing with interrupts are mostly idle and all the other cores are waiting on I/O as one would expect. Cpu0 : 0.0%us, 1.0%sy, 0.0%ni, 91.2%id, 7.5%wa, 0.0%hi, 0.2%si, 0.0%st Cpu1 : 0.0%us, 0.8%sy, 0.0%ni, 93.0%id, 0.2%wa, 0.0%hi, 6.0%si, 0.0%st Cpu2 : 0.0%us, 0.6%sy, 0.0%ni, 94.4%id, 0.1%wa, 0.0%hi, 4.8%si, 0.0%st Cpu3 : 0.0%us, 7.5%sy, 0.0%ni, 36.3%id, 56.1%wa, 0.0%hi, 0.0%si, 0.0%st Cpu4 : 0.0%us, 1.3%sy, 0.0%ni, 85.7%id, 4.9%wa, 0.0%hi, 8.1%si, 0.0%st Cpu5 : 0.1%us, 5.5%sy, 0.0%ni, 36.2%id, 58.3%wa, 0.0%hi, 0.0%si, 0.0%st Cpu6 : 0.0%us, 5.0%sy, 0.0%ni, 36.3%id, 58.7%wa, 0.0%hi, 0.0%si, 0.0%st Cpu7 : 0.0%us, 5.1%sy, 0.0%ni, 36.3%id, 58.5%wa, 0.0%hi, 0.0%si, 0.0%st Cpu8 : 0.1%us, 8.3%sy, 0.0%ni, 27.2%id, 64.4%wa, 0.0%hi, 0.0%si, 0.0%st Cpu9 : 0.1%us, 7.9%sy, 0.0%ni, 36.2%id, 55.8%wa, 0.0%hi, 0.0%si, 0.0%st Cpu10 : 0.0%us, 7.8%sy, 0.0%ni, 36.2%id, 56.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu11 : 0.0%us, 7.3%sy, 0.0%ni, 36.3%id, 56.4%wa, 0.0%hi, 0.0%si, 0.0%st Cpu12 : 0.0%us, 5.6%sy, 0.0%ni, 33.1%id, 61.2%wa, 0.0%hi, 0.0%si, 0.0%st Cpu13 : 0.1%us, 5.3%sy, 0.0%ni, 36.1%id, 58.5%wa, 0.0%hi, 0.0%si, 0.0%st Cpu14 : 0.0%us, 4.9%sy, 0.0%ni, 36.4%id, 58.7%wa, 0.0%hi, 0.0%si, 0.0%st Cpu15 : 0.1%us, 5.4%sy, 0.0%ni, 36.5%id, 58.1%wa, 0.0%hi, 0.0%si, 0.0%st Given all this, the throughput reported by running "dstat 10" is in the range of 2200-2300 MB/sec. Given the math above I would expect something in the range of 2*1920 ~= 3600+ MB/sec. Does anybody have any idea where my missing bandwidth went? Thanks!

Read the article

Residual packages Ubuntu 12.04

- by hydroxide

I have an Asus Q500A with win8 and Ubuntu 12.04 64 bit; Linux kernel 3.8.0-32-generic. I have been having residual package issues which have been giving me trouble trying to reconfigure xserver-xorg-lts-raring. I tried removing all residual packages from synaptic but the following were not removed. Output of sudo dpkg -l | grep "^rc" rc gstreamer0.10-plugins-good:i386 0.10.31-1ubuntu1.2 GStreamer plugins from the "good" set rc libaa1:i386 1.4p5-39ubuntu1 ASCII art library rc libaio1:i386 0.3.109-2ubuntu1 Linux kernel AIO access library - shared library rc libao4:i386 1.1.0-1ubuntu2 Cross Platform Audio Output Library rc libasn1-8-heimdal:i386 1.6~git20120311.dfsg.1-2ubuntu0.1 Heimdal Kerberos - ASN.1 library rc libasound2:i386 1.0.25-1ubuntu10.2 shared library for ALSA applications rc libasyncns0:i386 0.8-4 Asynchronous name service query library rc libatk1.0-0:i386 2.4.0-0ubuntu1 ATK accessibility toolkit rc libavahi-client3:i386 0.6.30-5ubuntu2 Avahi client library rc libavahi-common3:i386 0.6.30-5ubuntu2 Avahi common library rc libavc1394-0:i386 0.5.3-1ubuntu2 control IEEE 1394 audio/video devices rc libcaca0:i386 0.99.beta17-2.1ubuntu2 colour ASCII art library rc libcairo-gobject2:i386 1.10.2-6.1ubuntu3 The Cairo 2D vector graphics library (GObject library) rc libcairo2:i386 1.10.2-6.1ubuntu3 The Cairo 2D vector graphics library rc libcanberra-gtk0:i386 0.28-3ubuntu3 GTK+ helper for playing widget event sounds with libcanberra rc libcanberra0:i386 0.28-3ubuntu3 simple abstract interface for playing event sounds rc libcap2:i386 1:2.22-1ubuntu3 support for getting/setting POSIX.1e capabilities rc libcdparanoia0:i386 3.10.2+debian-10ubuntu1 audio extraction tool for sampling CDs (library) rc libcroco3:i386 0.6.5-1ubuntu0.1 Cascading Style Sheet (CSS) parsing and manipulation toolkit rc libcups2:i386 1.5.3-0ubuntu8 Common UNIX Printing System(tm) - Core library rc libcupsimage2:i386 1.5.3-0ubuntu8 Common UNIX Printing System(tm) - Raster image library rc libcurl3:i386 7.22.0-3ubuntu4.3 Multi-protocol file transfer library (OpenSSL) rc libdatrie1:i386 0.2.5-3 Double-array trie library rc libdbus-glib-1-2:i386 0.98-1ubuntu1.1 simple interprocess messaging system (GLib-based shared library) rc libdbusmenu-qt2:i386 0.9.2-0ubuntu1 Qt implementation of the DBusMenu protocol rc libdrm-nouveau2:i386 2.4.43-0ubuntu0.0.3 Userspace interface to nouveau-specific kernel DRM services -- runtime rc libdv4:i386 1.0.0-3ubuntu1 software library for DV format digital video (runtime lib) rc libesd0:i386 0.2.41-10build3 Enlightened Sound Daemon - Shared libraries rc libexif12:i386 0.6.20-2ubuntu0.1 library to parse EXIF files rc libexpat1:i386 2.0.1-7.2ubuntu1.1 XML parsing C library - runtime library rc libflac8:i386 1.2.1-6 Free Lossless Audio Codec - runtime C library rc libfontconfig1:i386 2.8.0-3ubuntu9.1 generic font configuration library - runtime rc libfreetype6:i386 2.4.8-1ubuntu2.1 FreeType 2 font engine, shared library files rc libgail18:i386 2.24.10-0ubuntu6 GNOME Accessibility Implementation Library -- shared libraries rc libgconf-2-4:i386 3.2.5-0ubuntu2 GNOME configuration database system (shared libraries) rc libgcrypt11:i386 1.5.0-3ubuntu0.2 LGPL Crypto library - runtime library rc libgd2-xpm:i386 2.0.36~rc1~dfsg-6ubuntu2 GD Graphics Library version 2 rc libgdbm3:i386 1.8.3-10 GNU dbm database routines (runtime version) rc libgdk-pixbuf2.0-0:i386 2.26.1-1 GDK Pixbuf library rc libgif4:i386 4.1.6-9ubuntu1 library for GIF images (library) rc libgl1-mesa-dri-lts-quantal:i386 9.0.3-0ubuntu0.4~precise1 free implementation of the OpenGL API -- DRI modules rc libgl1-mesa-dri-lts-raring:i386 9.1.4-0ubuntu0.1~precise2 free implementation of the OpenGL API -- DRI modules rc libgl1-mesa-glx:i386 8.0.4-0ubuntu0.6 free implementation of the OpenGL API -- GLX runtime rc libgl1-mesa-glx-lts-quantal:i386 9.0.3-0ubuntu0.4~precise1 free implementation of the OpenGL API -- GLX runtime rc libgl1-mesa-glx-lts-raring:i386 9.1.4-0ubuntu0.1~precise2 free implementation of the OpenGL API -- GLX runtime rc libglapi-mesa:i386 8.0.4-0ubuntu0.6 free implementation of the GL API -- shared library rc libglapi-mesa-lts-quantal:i386 9.0.3-0ubuntu0.4~precise1 free implementation of the GL API -- shared library rc libglapi-mesa-lts-raring:i386 9.1.4-0ubuntu0.1~precise2 free implementation of the GL API -- shared library rc libglu1-mesa:i386 8.0.4-0ubuntu0.6 Mesa OpenGL utility library (GLU) rc libgnome-keyring0:i386 3.2.2-2 GNOME keyring services library rc libgnutls26:i386 2.12.14-5ubuntu3.5 GNU TLS library - runtime library rc libgomp1:i386 4.6.3-1ubuntu5 GCC OpenMP (GOMP) support library rc libgpg-error0:i386 1.10-2ubuntu1 library for common error values and messages in GnuPG components rc libgphoto2-2:i386 2.4.13-1ubuntu1.2 gphoto2 digital camera library rc libgphoto2-port0:i386 2.4.13-1ubuntu1.2 gphoto2 digital camera port library rc libgssapi-krb5-2:i386 1.10+dfsg~beta1-2ubuntu0.3 MIT Kerberos runtime libraries - krb5 GSS-API Mechanism rc libgssapi3-heimdal:i386 1.6~git20120311.dfsg.1-2ubuntu0.1 Heimdal Kerberos - GSSAPI support library rc libgstreamer-plugins-base0.10-0:i386 0.10.36-1ubuntu0.1 GStreamer libraries from the "base" set rc libgstreamer0.10-0:i386 0.10.36-1ubuntu1 Core GStreamer libraries and elements rc libgtk2.0-0:i386 2.24.10-0ubuntu6 GTK+ graphical user interface library rc libgudev-1.0-0:i386 1:175-0ubuntu9.4 GObject-based wrapper library for libudev rc libhcrypto4-heimdal:i386 1.6~git20120311.dfsg.1-2ubuntu0.1 Heimdal Kerberos - crypto library rc libheimbase1-heimdal:i386 1.6~git20120311.dfsg.1-2ubuntu0.1 Heimdal Kerberos - Base library rc libheimntlm0-heimdal:i386 1.6~git20120311.dfsg.1-2ubuntu0.1 Heimdal Kerberos - NTLM support library rc libhx509-5-heimdal:i386 1.6~git20120311.dfsg.1-2ubuntu0.1 Heimdal Kerberos - X509 support library rc libibus-1.0-0:i386 1.4.1-3ubuntu1 Intelligent Input Bus - shared library rc libice6:i386 2:1.0.7-2build1 X11 Inter-Client Exchange library rc libidn11:i386 1.23-2 GNU Libidn library, implementation of IETF IDN specifications rc libiec61883-0:i386 1.2.0-0.1ubuntu1 an partial implementation of IEC 61883 rc libieee1284-3:i386 0.2.11-10build1 cross-platform library for parallel port access rc libjack-jackd2-0:i386 1.9.8~dfsg.1-1ubuntu2 JACK Audio Connection Kit (libraries) rc libjasper1:i386 1.900.1-13 JasPer JPEG-2000 runtime library rc libjpeg-turbo8:i386 1.1.90+svn733-0ubuntu4.2 IJG JPEG compliant runtime library. rc libjson0:i386 0.9-1ubuntu1 JSON manipulation library - shared library rc libk5crypto3:i386 1.10+dfsg~beta1-2ubuntu0.3 MIT Kerberos runtime libraries - Crypto Library rc libkeyutils1:i386 1.5.2-2 Linux Key Management Utilities (library) rc libkrb5-26-heimdal:i386 1.6~git20120311.dfsg.1-2ubuntu0.1 Heimdal Kerberos - libraries rc libkrb5-3:i386 1.10+dfsg~beta1-2ubuntu0.3 MIT Kerberos runtime libraries rc libkrb5support0:i386 1.10+dfsg~beta1-2ubuntu0.3 MIT Kerberos runtime libraries - Support library rc liblcms1:i386 1.19.dfsg-1ubuntu3 Little CMS color management library rc libldap-2.4-2:i386 2.4.28-1.1ubuntu4.4 OpenLDAP libraries rc libllvm3.0:i386 3.0-4ubuntu1 Low-Level Virtual Machine (LLVM), runtime library rc libllvm3.1:i386 3.1-2ubuntu1~12.04.1 Low-Level Virtual Machine (LLVM), runtime library rc libllvm3.2:i386 3.2-2ubuntu5~precise1 Low-Level Virtual Machine (LLVM), runtime library rc libltdl7:i386 2.4.2-1ubuntu1 A system independent dlopen wrapper for GNU libtool rc libmad0:i386 0.15.1b-7ubuntu1 MPEG audio decoder library rc libmikmod2:i386 3.1.12-2 Portable sound library rc libmng1:i386 1.0.10-3 Multiple-image Network Graphics library rc libmpg123-0:i386 1.12.1-3.2ubuntu1 MPEG layer 1/2/3 audio decoder -- runtime library rc libmysqlclient18:i386 5.5.32-0ubuntu0.12.04.1 MySQL database client library rc libnspr4:i386 4.9.5-0ubuntu0.12.04.1 NetScape Portable Runtime Library rc libnss3:i386 3.14.3-0ubuntu0.12.04.1 Network Security Service libraries rc libodbc1:i386 2.2.14p2-5ubuntu3 ODBC library for Unix rc libogg0:i386 1.2.2~dfsg-1ubuntu1 Ogg bitstream library rc libopenal1:i386 1:1.13-4ubuntu3 Software implementation of the OpenAL API (shared library) rc liborc-0.4-0:i386 1:0.4.16-1ubuntu2 Library of Optimized Inner Loops Runtime Compiler rc libosmesa6:i386 8.0.4-0ubuntu0.6 Mesa Off-screen rendering extension rc libp11-kit0:i386 0.12-2ubuntu1 Library for loading and coordinating access to PKCS#11 modules - runtime rc libpango1.0-0:i386 1.30.0-0ubuntu3.1 Layout and rendering of internationalized text rc libpixman-1-0:i386 0.24.4-1 pixel-manipulation library for X and cairo rc libproxy1:i386 0.4.7-0ubuntu4.1 automatic proxy configuration management library (shared) rc libpulse-mainloop-glib0:i386 1:1.1-0ubuntu15.4 PulseAudio client libraries (glib support) rc libpulse0:i386 1:1.1-0ubuntu15.4 PulseAudio client libraries rc libqt4-dbus:i386 4:4.8.1-0ubuntu4.4 Qt 4 D-Bus module rc libqt4-declarative:i386 4:4.8.1-0ubuntu4.4 Qt 4 Declarative module rc libqt4-designer:i386 4:4.8.1-0ubuntu4.4 Qt 4 designer module rc libqt4-network:i386 4:4.8.1-0ubuntu4.4 Qt 4 network module rc libqt4-opengl:i386 4:4.8.1-0ubuntu4.4 Qt 4 OpenGL module rc libqt4-qt3support:i386 4:4.8.1-0ubuntu4.4 Qt 3 compatibility library for Qt 4 rc libqt4-script:i386 4:4.8.1-0ubuntu4.4 Qt 4 script module rc libqt4-scripttools:i386 4:4.8.1-0ubuntu4.4 Qt 4 script tools module rc libqt4-sql:i386 4:4.8.1-0ubuntu4.4 Qt 4 SQL module rc libqt4-svg:i386 4:4.8.1-0ubuntu4.4 Qt 4 SVG module rc libqt4-test:i386 4:4.8.1-0ubuntu4.4 Qt 4 test module rc libqt4-xml:i386 4:4.8.1-0ubuntu4.4 Qt 4 XML module rc libqt4-xmlpatterns:i386 4:4.8.1-0ubuntu4.4 Qt 4 XML patterns module rc libqtcore4:i386 4:4.8.1-0ubuntu4.4 Qt 4 core module rc libqtgui4:i386 4:4.8.1-0ubuntu4.4 Qt 4 GUI module rc libqtwebkit4:i386 2.2.1-1ubuntu4 Web content engine library for Qt rc libraw1394-11:i386 2.0.7-1ubuntu1 library for direct access to IEEE 1394 bus (aka FireWire) rc libroken18-heimdal:i386 1.6~git20120311.dfsg.1-2ubuntu0.1 Heimdal Kerberos - roken support library rc librsvg2-2:i386 2.36.1-0ubuntu1 SAX-based renderer library for SVG files (runtime) rc librtmp0:i386 2.4~20110711.gitc28f1bab-1 toolkit for RTMP streams (shared library) rc libsamplerate0:i386 0.1.8-4 Audio sample rate conversion library rc libsane:i386 1.0.22-7ubuntu1 API library for scanners rc libsasl2-2:i386 2.1.25.dfsg1-3ubuntu0.1 Cyrus SASL - authentication abstraction library rc libsdl-image1.2:i386 1.2.10-3 image loading library for Simple DirectMedia Layer 1.2 rc libsdl-mixer1.2:i386 1.2.11-7 Mixer library for Simple DirectMedia Layer 1.2, libraries rc libsdl-net1.2:i386 1.2.7-5 Network library for Simple DirectMedia Layer 1.2, libraries rc libsdl-ttf2.0-0:i386 2.0.9-1.1ubuntu1 ttf library for Simple DirectMedia Layer with FreeType 2 support rc libsdl1.2debian:i386 1.2.14-6.4ubuntu3 Simple DirectMedia Layer rc libshout3:i386 2.2.2-7ubuntu1 MP3/Ogg Vorbis broadcast streaming library rc libsm6:i386 2:1.2.0-2build1 X11 Session Management library rc libsndfile1:i386 1.0.25-4 Library for reading/writing audio files rc libsoup-gnome2.4-1:i386 2.38.1-1 HTTP library implementation in C -- GNOME support library rc libsoup2.4-1:i386 2.38.1-1 HTTP library implementation in C -- Shared library rc libspeex1:i386 1.2~rc1-3ubuntu2 The Speex codec runtime library rc libspeexdsp1:i386 1.2~rc1-3ubuntu2 The Speex extended runtime library rc libsqlite3-0:i386 3.7.9-2ubuntu1.1 SQLite 3 shared library rc libssl0.9.8:i386 0.9.8o-7ubuntu3.1 SSL shared libraries rc libstdc++5:i386 1:3.3.6-25ubuntu1 The GNU Standard C++ Library v3 rc libstdc++6:i386 4.6.3-1ubuntu5 GNU Standard C++ Library v3 rc libtag1-vanilla:i386 1.7-1ubuntu5 audio meta-data library - vanilla flavour rc libtasn1-3:i386 2.10-1ubuntu1.1 Manage ASN.1 structures (runtime) rc libtdb1:i386 1.2.9-4 Trivial Database - shared library rc libthai0:i386 0.1.16-3 Thai language support library rc libtheora0:i386 1.1.1+dfsg.1-3ubuntu2 The Theora Video Compression Codec rc libtiff4:i386 3.9.5-2ubuntu1.5 Tag Image File Format (TIFF) library rc libtxc-dxtn-s2tc0:i386 0~git20110809-2.1 Texture compression library for Mesa rc libunistring0:i386 0.9.3-5 Unicode string library for C rc libusb-0.1-4:i386 2:0.1.12-20 userspace USB programming library rc libv4l-0:i386 0.8.6-1ubuntu2 Collection of video4linux support libraries rc libv4lconvert0:i386 0.8.6-1ubuntu2 Video4linux frame format conversion library rc libvisual-0.4-0:i386 0.4.0-4 Audio visualization framework rc libvorbis0a:i386 1.3.2-1ubuntu3 The Vorbis General Audio Compression Codec (Decoder library) rc libvorbisenc2:i386 1.3.2-1ubuntu3 The Vorbis General Audio Compression Codec (Encoder library) rc libvorbisfile3:i386 1.3.2-1ubuntu3 The Vorbis General Audio Compression Codec (High Level API) rc libwavpack1:i386 4.60.1-2 audio codec (lossy and lossless) - library rc libwind0-heimdal:i386 1.6~git20120311.dfsg.1-2ubuntu0.1 Heimdal Kerberos - stringprep implementation rc libwrap0:i386 7.6.q-21 Wietse Venema's TCP wrappers library rc libx11-6:i386 2:1.4.99.1-0ubuntu2.2 X11 client-side library rc libx11-xcb1:i386 2:1.4.99.1-0ubuntu2.2 Xlib/XCB interface library rc libxau6:i386 1:1.0.6-4 X11 authorisation library rc libxaw7:i386 2:1.0.9-3ubuntu1 X11 Athena Widget library rc libxcb-dri2-0:i386 1.8.1-1ubuntu0.2 X C Binding, dri2 extension rc libxcb-glx0:i386 1.8.1-1ubuntu0.2 X C Binding, glx extension rc libxcb-render0:i386 1.8.1-1ubuntu0.2 X C Binding, render extension rc libxcb-shm0:i386 1.8.1-1ubuntu0.2 X C Binding, shm extension rc libxcb1:i386 1.8.1-1ubuntu0.2 X C Binding rc libxcomposite1:i386 1:0.4.3-2build1 X11 Composite extension library rc libxcursor1:i386 1:1.1.12-1ubuntu0.1 X cursor management library rc libxdamage1:i386 1:1.1.3-2build1 X11 damaged region extension library rc libxdmcp6:i386 1:1.1.0-4 X11 Display Manager Control Protocol library rc libxext6:i386 2:1.3.0-3ubuntu0.1 X11 miscellaneous extension library rc libxfixes3:i386 1:5.0-4ubuntu4.1 X11 miscellaneous 'fixes' extension library rc libxft2:i386 2.2.0-3ubuntu2 FreeType-based font drawing library for X rc libxi6:i386 2:1.6.0-0ubuntu2.1 X11 Input extension library rc libxinerama1:i386 2:1.1.1-3ubuntu0.1 X11 Xinerama extension library rc libxml2:i386 2.7.8.dfsg-5.1ubuntu4.6 GNOME XML library rc libxmu6:i386 2:1.1.0-3 X11 miscellaneous utility library rc libxp6:i386 1:1.0.1-2ubuntu0.12.04.1 X Printing Extension (Xprint) client library rc libxpm4:i386 1:3.5.9-4 X11 pixmap library rc libxrandr2:i386 2:1.3.2-2ubuntu0.2 X11 RandR extension library rc libxrender1:i386 1:0.9.6-2ubuntu0.1 X Rendering Extension client library rc libxslt1.1:i386 1.1.26-8ubuntu1.3 XSLT 1.0 processing library - runtime library rc libxss1:i386 1:1.2.1-2 X11 Screen Saver extension library rc libxt6:i386 1:1.1.1-2ubuntu0.1 X11 toolkit intrinsics library rc libxtst6:i386 2:1.2.0-4ubuntu0.1 X11 Testing -- Record extension library rc libxv1:i386 2:1.0.6-2ubuntu0.1 X11 Video extension library rc libxxf86vm1:i386 1:1.1.1-2ubuntu0.1 X11 XFree86 video mode extension library rc odbcinst1debian2:i386 2.2.14p2-5ubuntu3 Support library for accessing odbc ini files rc skype-bin:i386 4.2.0.11-0ubuntu0.12.04.2 client for Skype VOIP and instant messaging service - binary files rc sni-qt:i386 0.2.5-0ubuntu3 indicator support for Qt rc wine-compholio:i386 1.7.4~ubuntu12.04.1 The Compholio Edition is a special build of the popular Wine software rc xaw3dg:i386 1.5+E-18.1ubuntu1 Xaw3d widget set

Read the article

Does HTML 5 “Rich vs. Reach” a False Choice?

- by andrewbrust

The competition between the Web and proprietary rich platforms, including Windows, Mac OS, iPhone/iPad, Adobe’s Flash/AIR and Microsoft’s Silverlight, is not new. But with the emergence of HTML 5 and imminent support for it in the next release of the major Web browsers, the battle is heating up. And with the announcements made Wednesday at Google's I/O conference, it's getting kicked up yet another notch. The impact of this platform battle on companies in the media and advertising world, and the developers who serve them, is significant. The most prominent question is whether video and rich media online will shift towards pure HTML and away from plug-ins like Flash and Silverlight. In fact, certain features in HTML 5 make it suitable for development for line of business applications as well, further threatening those plug-in technologies. So what's the deal? Is this real or hype? To answer that question, I've done my own research into HTML 5's features and talked to several media-focused, New York area developers to get their opinions. I present my findings to you in this post. Before bearing down into HTML 5 specifics and practitioners’ quotes, let's set the context. To understand what HTML 5 can do, take a look at this video of Sports Illustrated’s HTML 5 prototype. This should start to get you bought into the idea that HTML 5 could be a game-changer. Next, if you happen to have installed the beta version of Google's Chrome 5 browser, take a look at the page linked to below, and in that page, click on any of the game thumbnails to see what's possible, without a plug-in, in this brave new world. (Note, although the instructions for each game tell you to press the A key to start, press the Z key instead.). Here's the link: http://www.kesiev.com/akihabara As an adjunct to what's enabled by HTML 5, consider the various transforms that are part of CSS 3. If you're running Safari as your browser, the following link will showcase this live; if not, you'll see a bitmap that will give you an idea of what's possible: http://webkit.org/blog/386/3d-transforms Are you starting to get the picture (literally)? What has up until now required browser plug-ins and other patches to HTML, most typically Flash, will soon be renderable, natively, in all major browsers. Moreover, it's looking likely that developers will be able to deliver such content and experiences in these browsers using one base of markup and script code (using straight JavaScript and/or jQuery), without resorting to browser-specific code and workarounds. If you're skeptical of this, I wouldn't blame you, especially with respect to Microsoft's Internet Explorer. However, i can tell you with confidence that even Microsoft is dedicated to full-on HTML 5 support in version 9 of that browser, which is currently under development. So what’s new in HTML 5, specifically, that makes sites like this possible? The specification documents go into deep detail, and there’s no sense in rehashing them here, but a summary is probably in order. Here is a non-authoritative, but useful, list of the major new feature areas in HTML 5: 2D drawing capabilities and 3D transforms. 2D drawing instructions can be embedded statically into a Web page; application interactivity and animation can be achieved through script. As mentioned above, 3D transforms are technically part of version 3 of the CSS (Cascading Style Sheets) spec, rather than HTML 5, but they can nonetheless be thought of as part of the bundle. They allow for rendering of 3D images and animations that, together with 2D drawing, make HTML-based games much more feasible than they are presently, as the links above demonstrate. Embedded audio and video. A media player can appear directly in a rendered Web page, using HTML markup and no plug-ins. Alternately, player controls can be hidden and the content can play automatically. Major enhancements to form-based input. This includes such things as specification of required fields, embedding of text “hints” into a control, limiting valid input on a field to dates, email addresses or a list of values. There’s more to this, but the gist is that line-of-business applications, with complicated input and data validation, are supported directly Offline caching, local storage and client-side SQL database. These facilities allow Web applications to function more like native apps, even if no internet connection is available. User-defined data. Data (or metadata – data about data) can easily be embedded statically and/or retrieved and updated with Javascript code. This avoids having to embed that data in a separate file, or within script code. Taken together, these features position HTML to compete with, and perhaps overtake, Adobe’s Flash/AIR (and Microsoft’s Silverlight) as a viable Web platform for media, RIAs (rich internet applications – apps that function more like desktop software than Web sites) and interactive Web content, including games. What do players in the media world think about this? From the embedded video above, we know what Sports Illustrated (and, therefore, Time Warner) think. Hulu, the major Internet site for broadcast TV content, is on record as saying HTML5 video does not pass muster with them, at least not yet. YouTube, on the other hand, already has an experimental HTML 5-based version of their site. TechCrunch has reported that NetFlix is flirting with HTML 5 too, especially as it pertains to embedded browsers in TV-based devices. And the New York Times’ Web site now embeds some video clips without resorting to Flash. They have to – otherwise iPhone, iPod Touch and iPad users couldn’t see them in the Mobile Safari browser. What do media-focused developers think about all this? I talked to several to get their opinions. Michael Pinto is CEO and Founder of Very Memorable Design whose primary focus has been to help marketing directors get traction online. The firm’s client roster includes the likes Time, Inc., Scholastic and PBS. Pinto predicts that “More and more microsites that were done entirely in Flash will be done more and more using jQuery. I can also see slideshows and video now being done without Flash. However if you needed to create a game or highly interactive activity Flash would still be the way to go for the web.” A dissenting view comes from Jesse Erlbaum, CEO of The Erlbaum Group, LLC, which serves numerous clients in the magazine publishing sector. When I asked Erlbaum whether he thought HTML 5 and jQuery/JavaScript would steal significant market share from Flash, he responded “Not at all! In particular, not for media and advertising customers! These sectors are not generally in the business of making highly functional applications, which is the one place where HTML5/jQuery/etc really shines.” Ironically, Pinto’s firm is a heavy user of Flash for its projects and Erlbaum’s develops atop the “LAMP” (Linux, Apache, MySQL and PHP/Perl) stack. For whatever reason, each firm seems to see the other’s toolset as a more viable choice. But both agree that the developer tool story around HTML 5 is deficient. Pinto explains “What’s lost with [HTML 5 and Javascript] techniques is that there isn’t a single widely favored easy-to-use tool of choice for authoring. So with Flash you can get up and running right away and not worry about what is different from one browser to the next.“ Erlbaum agrees, saying: “HTML5/Javascript lacks a sophisticated integrated development environment (IDE) which is an essential part of Flash. If what someone is trying to make is primarily animation, it's a waste of time…to do this in Javascript. It can be done much more easily in Flash, and with greater cross-browser compatibility and consistency due to the ubiquity of Flash.” Adobe (maker of Flash since its 2005 acquisition of Macromedia) likely agrees. And for better or worse, they’ve decided to address this shortcoming of HTML 5, even at risk of diminishing their Flash platfrom. Yesterday Adobe announced that their hugely popular Deamweaver Web design authoring tool would directly support HTML 5 and CSS 3 development. In fact, the Adobe Dreamweaver CS5 HTML5 Pack is downloadable now from Adobe Labs. Maybe Adobe is bowing to pressure from ardent Web professionals like Scott Kellum, Lead Designer at Channel V Media, a digital and offline branding firm, serving the media and marketing sectors, among others. Kellum told me that HTML 5 “…will definitely move people away from Flash. It has many of the same functionalities with faster load times and better accessibility. HTML5 will help Flash as well: with the new caching methods you can now even run Flash apps offline.” Although all three Web developers I interviewed would agree that Flash is still required for more sophisticated applications, Kellum seems to have put his finger on why HTML 5 may nonetheless dominate. In his view, much of the Web development out there has little need for high-end capabilities: “Most people want to add a little punch to a navigation bar or some video and now you can get the biggest bang for your buck with HTML5, CSS3 and Javascript.” I’ve already mentioned that Google’s ongoing I/O conference, at the Moscone West center in San Francisco, is driving the HTML 5 news cycle, big time. And Google made many announcements of their own, including the open sourcing of their VP8 video codec, new enterprise-oriented capabilities for its App Engine cloud offering, and the creation of the Chrome Web Store, which the company says will make it easier to find and “install” Web applications, in a fashion similar to the way users procure native apps on various mobile platforms. HTML 5 looks to be disruptive, especially to the media world. And even if the technology ends up disappointing, the chatter around it alone is causing big changes in the technology world. If the richness it promises delivers, then magazine publishers and non-text digital advertisers may indeed have a platform for creating compelling content that loads quickly, is standards-based and will render identically in (the newest versions of) all major Web browsers. Can this development in the digital arena save the titans of the print world? I can’t predict, but it’s going to be fun to watch, and the competitive innovation from all players in both industries will likely be immense.

Read the article

Weblogic domain scale up using EM Grid Control 11gR1

- by dmitry.nefedkin(at)oracle.com

As you know a weblogic domain consists of set of servers running independently or in a cluster mode, sharing the distributed resources. And in most environments weblogic cluster consists of multiple managed servers running simultaneously and working together to provide increased scalability and reliability. These servers can run on the same machine, or be located on different machines. It's a common task to increase a cluster's capacity by adding new machines to the cluster to host the new server instances. You can do it by manually installing weblogic binaries to the new host and use pack/unpack commands to add a managed server to this new host. But with Enterprise Manager Grid Control 11gR1 (EMGC) there is another way - Fusion Middleware Domain Scale Up procedure. I'm going to show you how it works.Here is a picture of my medrec_oradb weblogic domain, what is registered in EMGC. It contains an admin server and a cluster MedRecCluster with the single managed server MS1. Both admin and managed servers are on the same host oel46-vmware, it's a virtual machine with OEL 4.6 that runs inside our Oracle VM infrastructure. And here are the application deployments, note that couple of applications are deployed to the cluster.First of all I have to prepare a new machine that will host new managed sever of my cluster. I created new VM with OEL 5.4 using the corresponding Oracle VM template available in Oracle E-Delivery site for Oracle Linux and Oracle VM and named it wls1032. Next step is to install Oracle EM Grid Control 11gR1 Agent to this new host. You can download it from the OTN page and install it manually, or you can use Agent Installation Deployment procedure available in EMGC (Deployments->Agent Installation->Install Agent). Anyway, when you agent is up and running on the new machine, you will see it in EMGC Console in the Targets->Hosts subtab.Now we are ready to scale up our weblogic domain. Click the Deployments tab in Oracle Enterprise Manager Grid Control, and then click Deployment Procedure. Select a Fusion Middleware Domain Scale Up procedure from the list, and click Schedule Deployment. The first page of the FMW Domain Scale Up Wizard is displayed and you can proceed with the deployment process.Select the domain from list, enter the working directory on the admin server host, and also fill the weblogic credentials for the administration server console and the OS credentials for the admin server host. Click Next button. The next step allows you to configure you domain, to add a new manager server to the cluster you should select the cluster in the tree and click Add Server button. Select the newly added server in a tree, choose the target host and enter the configuration details of your managed server. You can also add new machine and node manager details. Please note that you cannot change the values in Domain Location and Fusion Middleware Home fields, so these locations on the target host will be the same as for the admin server host. Working directory on the target host should have enough free space to store FMW home binaries and domain configuration files. In my experience the working directories should have at least 3 Gb of free space. The last thing you should fill is the OS credentials for the target host. The next steps allows you to schedule the execution of the procedure, it is started immediately in my example. The last step is just a review the configuration for the domain scale up. Click Submit to launch the process. You can track the status of the procedure execution by selecting Deployments->Deployment Procedures->Procedure Completion Status in the EMGC Console.As you can see in the picture below, the procedure consists of the many steps, and I'm going to share my experience about the issues that I had at some of the steps. Please keep in mind that you can always continue the execution from the last successfully completed step by clicking Retry button.Check OUI Prerequisites step may fail if the target host does not pass prerequisites checks for Weblogic Server installation such as amount of RAM, linux packages installed, etc. Create FMW Clone Archive step may fail if you do not have enough free space in the working directory on the administration server host.Transfer cloning archive to targets step may fail if the EMGC agents on the admin server host or on target host are not secured. You should secure the agent by issuing ./emctl secure agent command from $AGENT_HOME/bin directory and entering the agent registration password.Both Transfer cloning archive to targets and Apply Clone at target hosts steps may fail if you do not have enough free space in the working directory on the target host. The most complicated issue I had on the Run Inventory Collection step. The step failed and I noticed that the agent on the target server is also failed with the following error in the $AGENT_HOME/sysman/log/emagent.trc log file:2010-12-28 11:50:34,310 Thread-2838952848 ERROR upload: Failed to upload file A0000008.xml: Fatal Error.Response received: 500|ORA-20603: The timezone of the multiagent target (/Farm_Localhost_MedRec_medrec_oradb/medrec_oradb,weblogic_domain)is not consistent with the timezone (America/Los_Angeles) reported by other agents.2010-12-28 11:50:34,310 Thread-2838952848 ERROR upload: 1 Failure(s) in a row or XML error for A0000008.xml, retcode = -6, we give up2010-12-28 11:50:35,552 Thread-2838952848 WARN upload: FxferSend: received fatal error in header from repository: https://oel46-vmware:1159/em/uploadFATAL_ERROR::500|ORA-20603: The timezone of the multiagent target (/Farm_Localhost_MedRec_medrec_oradb/medrec_oradb,weblogic_domain)is not consistent with the timezone (America/Los_Angeles) reported by other agents.2010-12-28 11:50:35,552 Thread-2838952848 ERROR upload: number of fatal error exceeds the limit 32010-12-28 11:50:35,552 Thread-2838952848 ERROR upload: agent will shutdown now2010-12-28 11:50:35,552 Thread-2838952848 ERROR : Signalled to Exit with status 55. Too many fatal upload failures2010-12-28 11:50:35,552 Thread-2838952848 ERROR upload: 1 Failure(s) in a row or XML error for A0000008.xml, retcode = -6, we give up2010-12-28 11:50:35,552 Thread-3044607680 ERROR main: EMAgent abnormal terminatingI checked the timezone of my domain target inside EMGC repositoryselect timezone_regionfrom mgmt_targets where target_type = 'weblogic_domain' and display_name = 'medrec_oradb'"TIMEZONE_REGION""America/Los_Angeles"Then checked the timezone of my agents and indeed, they differedselect target_name, timezone_region from mgmt_targets where type_display_name = 'Agent'"TARGET_NAME" "TIMEZONE_REGION""oel46-vmware:3872" "America/Los_Angeles""wls1032.imc.fors.ru:3872" "America/New_York"So I had to change the timezone on the wls1032 host and propagate this changes to the agent and to the EMGC repository. Here was the steps:issued system-config-date command on wls1032.imc.fors.ru and set timezone to "America/Los_Angeles"propagated the changes to the agent bu executing ./emctl resetTZ agent command from $AGENT_HOME/bin directoryconnected to EMGC repository as sysman and executed the following PL/SQL block: begin mgmt_target.set_agent_tzrgn('wls1032.imc.fors.ru:3872','America/Los_Angeles'); commit; end;After that I had to clear the pending uploads on wls1032.imc.fors.ru: rm -r $AGENT_HOME/sysman/emd/state/* rm -r $AGENT_HOME/sysman/emd/collection/* rm -r $AGENT_HOME/sysman/emd/upload/* rm $AGENT_HOME/sysman/emd/lastupld.xml rm $AGENT_HOME/sysman/emd/agntstmp.txt $AGENT_HOME/bin/emctl start agent $AGENT_HOME/bin/emctl clearstate agentThe last part of this solution was to resync the agent in EMGC console by clicking Agent Resynchronization button (please leave "Unblock agent on successful completion of agent resynchronization" checkbox checked in the next screen).After that I issued ./emctl upload command from $AGENT_HOME/bin on the wls1032 host, and my previous error disappeared, but I catched another one: EMD upload error: Failed to upload file A0000004.xml: HTTP error.Response received: ERROR-400|Data will be rejected for upload from agent 'https://wls1032.imc.fors.ru:3872/emd/main/', max size limit for direct load exceeded [7544731/5242880]So the uploading XML file size was 7 Mb, and the limit on OMS was 5 Mb. To increase the max file size limit to 20 Mb I had to connect to the OMS host and execute the following commands from $OMS_HOME/bin directory: ./emctl set property -name em.loader.maxDirectLoadFileSz -value 20971520 -module emoms ./emctl stop oms ./emctl start omsAfter that I issued ./emctl upload command from $AGENT_HOME/bin on the wls1032 one more time and it completed successfully. The agent uploaded the configuration information to the EMGC repository and I was able to see the results of my weblogic domain scale-up in EMGC Console.DeploymentsSo, now the weblogic cluster contains 2 managed servers located on the different hosts. This powerful feature of the Enterprise Manager Grid Control is a part of the WebLogic Server Management Pack Enterprise Edition.

Read the article

VLOOKUP in Excel, part 2: Using VLOOKUP without a database

- by Mark Virtue

In a recent article, we introduced the Excel function called VLOOKUP and explained how it could be used to retrieve information from a database into a cell in a local worksheet. In that article we mentioned that there were two uses for VLOOKUP, and only one of them dealt with querying databases. In this article, the second and final in the VLOOKUP series, we examine this other, lesser known use for the VLOOKUP function. If you haven’t already done so, please read the first VLOOKUP article – this article will assume that many of the concepts explained in that article are already known to the reader. When working with databases, VLOOKUP is passed a “unique identifier” that serves to identify which data record we wish to find in the database (e.g. a product code or customer ID). This unique identifier must exist in the database, otherwise VLOOKUP returns us an error. In this article, we will examine a way of using VLOOKUP where the identifier doesn’t need to exist in the database at all. It’s almost as if VLOOKUP can adopt a “near enough is good enough” approach to returning the data we’re looking for. In certain circumstances, this is exactly what we need. We will illustrate this article with a real-world example – that of calculating the commissions that are generated on a set of sales figures. We will start with a very simple scenario, and then progressively make it more complex, until the only rational solution to the problem is to use VLOOKUP. The initial scenario in our fictitious company works like this: If a salesperson creates more than $30,000 worth of sales in a given year, the commission they earn on those sales is 30%. Otherwise their commission is only 20%. So far this is a pretty simple worksheet: To use this worksheet, the salesperson enters their sales figures in cell B1, and the formula in cell B2 calculates the correct commission rate they are entitled to receive, which is used in cell B3 to calculate the total commission that the salesperson is owed (which is a simple multiplication of B1 and B2). The cell B2 contains the only interesting part of this worksheet – the formula for deciding which commission rate to use: the one below the threshold of $30,000, or the one above the threshold. This formula makes use of the Excel function called IF. For those readers that are not familiar with IF, it works like this: IF(condition,value if true,value if false) Where the condition is an expression that evaluates to either true or false. In the example above, the condition is the expression B1<B5, which can be read as “Is B1 less than B5?”, or, put another way, “Are the total sales less than the threshold”. If the answer to this question is “yes” (true), then we use the value if true parameter of the function, namely B6 in this case – the commission rate if the sales total was below the threshold. If the answer to the question is “no” (false), then we use the value if false parameter of the function, namely B7 in this case – the commission rate if the sales total was above the threshold. As you can see, using a sales total of $20,000 gives us a commission rate of 20% in cell B2. If we enter a value of $40,000, we get a different commission rate: So our spreadsheet is working. Let’s make it more complex. Let’s introduce a second threshold: If the salesperson earns more than $40,000, then their commission rate increases to 40%: Easy enough to understand in the real world, but in cell B2 our formula is getting more complex. If you look closely at the formula, you’ll see that the third parameter of the original IF function (the value if false) is now an entire IF function in its own right. This is called a nested function (a function within a function). It’s perfectly valid in Excel (it even works!), but it’s harder to read and understand. We’re not going to go into the nuts and bolts of how and why this works, nor will we examine the nuances of nested functions. This is a tutorial on VLOOKUP, not on Excel in general. Anyway, it gets worse! What about when we decide that if they earn more than $50,000 then they’re entitled to 50% commission, and if they earn more than $60,000 then they’re entitled to 60% commission? Now the formula in cell B2, while correct, has become virtually unreadable. No-one should have to write formulae where the functions are nested four levels deep! Surely there must be a simpler way? There certainly is. VLOOKUP to the rescue! Let’s redesign the worksheet a bit. We’ll keep all the same figures, but organize it in a new way, a more tabular way: Take a moment and verify for yourself that the new Rate Table works exactly the same as the series of thresholds above. Conceptually, what we’re about to do is use VLOOKUP to look up the salesperson’s sales total (from B1) in the rate table and return to us the corresponding commission rate. Note that the salesperson may have indeed created sales that are not one of the five values in the rate table ($0, $30,000, $40,000, $50,000 or $60,000). They may have created sales of $34,988. It’s important to note that $34,988 does not appear in the rate table. Let’s see if VLOOKUP can solve our problem anyway… We select cell B2 (the location we want to put our formula), and then insert the VLOOKUP function from the Formulas tab: The Function Arguments box for VLOOKUP appears. We fill in the arguments (parameters) one by one, starting with the Lookup_value, which is, in this case, the sales total from cell B1. We place the cursor in the Lookup_value field and then click once on cell B1: Next we need to specify to VLOOKUP what table to lookup this data in. In this example, it’s the rate table, of course. We place the cursor in the Table_array field, and then highlight the entire rate table – excluding the headings: Next we must specify which column in the table contains the information we want our formula to return to us. In this case we want the commission rate, which is found in the second column in the table, so we therefore enter a 2 into the Col_index_num field: Finally we enter a value in the Range_lookup field. Important: It is the use of this field that differentiates the two ways of using VLOOKUP. To use VLOOKUP with a database, this final parameter, Range_lookup, must always be set to FALSE, but with this other use of VLOOKUP, we must either leave it blank or enter a value of TRUE. When using VLOOKUP, it is vital that you make the correct choice for this final parameter. To be explicit, we will enter a value of true in the Range_lookup field. It would also be fine to leave it blank, as this is the default value: We have completed all the parameters. We now click the OK button, and Excel builds our VLOOKUP formula for us: If we experiment with a few different sales total amounts, we can satisfy ourselves that the formula is working. Conclusion In the “database” version of VLOOKUP, where the Range_lookup parameter is FALSE, the value passed in the first parameter (Lookup_value) must be present in the database. In other words, we’re looking for an exact match. But in this other use of VLOOKUP, we are not necessarily looking for an exact match. In this case, “near enough is good enough”. But what do we mean by “near enough”? Let’s use an example: When searching for a commission rate on a sales total of $34,988, our VLOOKUP formula will return us a value of 30%, which is the correct answer. Why did it choose the row in the table containing 30% ? What, in fact, does “near enough” mean in this case? Let’s be precise: When Range_lookup is set to TRUE (or omitted), VLOOKUP will look in column 1 and match the highest value that is not greater than the Lookup_value parameter. It’s also important to note that for this system to work, the table must be sorted in ascending order on column 1! If you would like to practice with VLOOKUP, the sample file illustrated in this article can be downloaded from here. Similar Articles Productive Geek Tips Using VLOOKUP in ExcelImport Microsoft Access Data Into ExcelImport an Access Database into ExcelCopy a Group of Cells in Excel 2007 to the Clipboard as an ImageShare Access Data with Excel in Office 2010 TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Quickly Schedule Meetings With NeedtoMeet Share Flickr Photos On Facebook Automatically Are You Blocked On Gtalk? Find out Discover Latest Android Apps On AppBrain The Ultimate Guide For YouTube Lovers Will it Blend? iPad Edition

Read the article

Complex type support in process flow – XMLTYPE

- by shawn

Before OWB 11.2 release, there are only 5 simple data types supported in process flow: DATE, BOOLEAN, INTEGER, FLOAT and STRING. A new complex data type – XMLTYPE is added in 11.2, in order to support complex data being passed between the process flow activities. In this article we will give a simple example to illustrate the usage of the new type and some related editors. Suppose there is a bookstore that uses XML format orders as shown below (we use the simplest form for the illustration purpose), then we can create a process flow to handle the order, take the order as the input, then extract necessary information, and generate a confirmation email to the customer automatically. <order id=’0001’> <customer> <name>Tom</name> <email>[email protected]</email> </customer> <book id=’Java_001’> <quantity>3</quantity> </book> </order> Considering a simple user case here: we use an input parameter/variable with XMLTYPE to hold the XML content of the order; then we can use an Assign activity to retrieve the email info from the order; after that, we can create an email activity to send the email (Other activities might be added in practical case, but will not be described here). 1) Set XML content value For testing purpose, we will create a variable to hold the sample order, and then this will be used among the process flow activities. When the variable is of XMLTYPE and the “Literal” value is set the true, the advance editor will be enabled. Click the “Advance Editor” shown as above, a simple xml editor will popup. The editor has basic features like syntax highlight and check as shown below: We can also do the basic validation or validation against schema with the editor by selecting the normalized schema. With this, it will be easier to provide the value for XMLTYPE variables. 2) Extract information from XML content After setting the value, we need to extract the email information with the Assign activity. In process flow, an enhanced expression builder is used to help users construct the XPath for extracting values from XML content. When the variable’s literal value is set the false, the advance editor is enabled. Click the button, the advance editor will popup, as shown below: The editor is based on the expression builder (which is often used in mapping etc), an XPath lib panel is appended which provides some help information on how to write the XPath. The expression used here is: “XMLTYPE.EXTRACT(XML_ORDER,'/order/customer/email/text()').getStringVal()”, which uses ‘/order/customer/email/text()’ as the XPath to extract the email info from the XML document. A variable called “EMAIL_ADDR” is created with String data type to hold the value extracted. Then we bind the “VARIABLE” parameter of Assign activity to “EMAIL_ADDR” variable, which means the value of the “EMAIL_ADDR” activity will be set to the result of the “VALUE” parameter of Assign activity. 3) Use the extracted information in Email activity We bind the “TO_ADDRESS” parameter of the email activity to the “EMAIL_ADDR” variable created in above step. We can also extract other information from the xml order directly through the expression, for example, we can set the “MESSAGE_BODY” with value “'Dear '||XMLTYPE.EXTRACT(XML_ORDER,'/order/customer/name/text()').getStringVal()||chr(13)||chr(10)||' You have ordered '||XMLTYPE.EXTRACT(XML_ORDER,'/order/book/quantity/text()').getStringVal()||' '||XMLTYPE.EXTRACT(XML_ORDER,'/order/book/@id').getStringVal()”. This expression will extract the customer name, the quantity and the book id from the order to compose the message body. To make the email activity work, we need provide some other necessary information, Such as “SMTP_SERVER” (which is the SMTP server used to send the emails, like “mail.bookstore.com”. The default PORT number is set to 25. You need to change the value accordingly), “FROM_ADDRESS” and “SUBJECT”. Then the process flow is ready to go. After deploying the process flow package, we can simply run the process flow to check if the result is as expected (An email will be sent to the specified email address with proper subject and message body). Note: In oracle 11g, there is an enhanced security feature - ACL (Access Control List), which restrict the network access within db, so we need to edit the list to allow UTL_SMTP work if you are using oracle 11g. Refer to chapter “Access Control Lists for UTL_TCP/HTTP/SMTP” and “Managing Fine-Grained Access to External Network Services” for more details. In previous releases, XMLTYPE already exists in other OWB objects, like mapping/transformation etc. When the mapping/transformation is dragged into a process flow, the parameters with XMLTYPE are mapped to STRING. Now with the XMLTYPE support in process flow, the XMLTYPE will map to XMLTYPE in a more natural way, and we can leverage the new data type for the design.

Read the article

readonly keyword

- by nmarun

This is something new that I learned about the readonly keyword. Have a look at the following class: 1: public class MyClass 2: { 3: public string Name { get; set; } 4: public int Age { get; set; } 5: 6: private readonly double Delta; 7: 8: public MyClass() 9: { 10: Initializer(); 11: } 12: 13: public MyClass(string name = "", int age = 0) 14: { 15: Name = name; 16: Age = age; 17: Initializer(); 18: } 19: 20: private void Initializer() 21: { 22: Delta = 0.2; 23: } 24: } I have a couple of public properties and a private readonly member. There are two constructors – one that doesn’t take any parameters and the other takes two parameters to initialize the public properties. I’m also calling the Initializer method in both constructors to initialize the readonly member. Now when I build this, the code breaks and the Error window says: “A readonly field cannot be assigned to (except in a constructor or a variable initializer)” Two things after I read this message: It’s such a negative statement. I’d prefer something like: “A readonly field can be assigned to (or initialized) only in a constructor or through a variable initializer” But in my defense, I AM assigning it in a constructor (only indirectly). All I’m doing is creating a method that does it and calling it in a constructor. Turns out, .net was not ‘frameworked’ this way. We need to have the member initialized directly in the constructor. If you have multiple constructors, you can just use the ‘this’ keyword on all except the default constructors to call the default constructor. This default constructor can then initialize your readonly members. This will ensure you’re not repeating the code in multiple places. A snippet of what I’m talking can be seen below: 1: public class Person 2: { 3: public int UniqueNumber { get; set; } 4: public string Name { get; set; } 5: public int Age { get; set; } 6: public DateTime DateOfBirth { get; set; } 7: public string InvoiceNumber { get; set; } 8: 9: private readonly string Alpha; 10: private readonly int Beta; 11: private readonly double Delta; 12: private readonly double Gamma; 13: 14: public Person() 15: { 16: Alpha = "FDSA"; 17: Beta = 2; 18: Delta = 3.0; 19: Gamma = 0.0989; 20: } 21: 22: public Person(int uniqueNumber) : this() 23: { 24: UniqueNumber = uniqueNumber; 25: } 26: } See the syntax in line 22 and you’ll know what I’m talking about. So the default constructor gets called before the one in line 22. These are known as constructor initializers and they allow one constructor to call another. The other ‘myth’ I had about readonly members is that you can set it’s value only once. This was busted as well (I recall Adam and Jamie’s show). Say you’ve initialized the readonly member through a variable initializer. You can over-write this value in any of the constructors any number of times. 1: public class Person 2: { 3: public int UniqueNumber { get; set; } 4: public string Name { get; set; } 5: public int Age { get; set; } 6: public DateTime DateOfBirth { get; set; } 7: public string InvoiceNumber { get; set; } 8: 9: private readonly string Alpha = "asdf"; 10: private readonly int Beta = 15; 11: private readonly double Delta = 0.077; 12: private readonly double Gamma = 1.0; 13: 14: public Person() 15: { 16: Alpha = "FDSA"; 17: Beta = 2; 18: Delta = 3.0; 19: Gamma = 0.0989; 20: } 21: 22: public Person(int uniqueNumber) : this() 23: { 24: UniqueNumber = uniqueNumber; 25: Beta = 3; 26: } 27: 28: public Person(string name, DateTime dob) : this() 29: { 30: Name = name; 31: DateOfBirth = dob; 32: 33: Alpha = ";LKJ"; 34: Gamma = 0.0898; 35: } 36: 37: public Person(int uniqueNumber, string name, int age, DateTime dob, string invoiceNumber) : this() 38: { 39: UniqueNumber = uniqueNumber; 40: Name = name; 41: Age = age; 42: DateOfBirth = dob; 43: InvoiceNumber = invoiceNumber; 44: 45: Alpha = "QWER"; 46: Beta = 5; 47: Delta = 1.0; 48: Gamma = 0.0; 49: } 50: } In the above example, every constructor over-writes the values for the readonly members. This is perfectly valid. There is a possibility that based on the way the object is instantiated, the readonly member will have a different value. Well, that’s all I have for today and read this as it’s on a related topic.

Read the article

VSNewFile: A Visual Studio Addin to More Easily Add New Items to a Project

- by InfinitiesLoop

My first Visual Studio Add-in! Creating add-ins is pretty simple, once you get used to the CommandBar model it is using, which is apparently a general Office suite extensibility mechanism. Anyway, let me first explain my motivation for this. It started out as an academic exercise, as I have always wanted to dip my feet in a little VS extensibility. But I thought of a legitimate need for an add-in, at least in my personal experience, so it took on new life. But I figured I can’t be the only one who has felt this way, so I decided to publish the add-in, and host it on GitHub (VSNewFile on GitHub) hoping to spur contributions. Adding Files the Built-in Way Here’s the problem I wanted to solve. You’re working on a project, and it’s time to add a new file to the project. Whatever it is – a class, script, html page, aspx page, or what-have-you, you go through a menu or keyboard shortcut to get to the “Add New Item” dialog. Typically, you do it by right-clicking the location where you want the file (the project or a folder of it): This brings up a dialog the contains, well, every conceivable type of item you might want to add. It’s all the available item templates, which can result in anywhere from a ton to a veritable sea of choices. To be fair, this dialog has been revamped in Visual Studio 2010, which organizes it a little better than Visual Studio 2008, and adds a search box. It also loads noticeably faster. To me, this dialog is just getting in my way. If I want to add a JavaScript script to my project, I don’t want to have to hunt for the script template item in this dialog. Yes, it is categorized, and yes, it now has a search box. But still, all this UI to swim through when all I need is a new file in the project. I will name it. I will provide the content, I don’t even need a ‘template’. VS kind of realizes this. In the add menu in a class library project, for example, there is a “Add Class…” choice. But all this really does is select that project item from the dialog by default. You still must wait for the dialog, see it, and type in a name for the file. How is that really any different than hitting F2 on an existing item? It isn’t. Adding Files the Hack Way What I often find myself doing, just to avoid going through this dialog, is to copy and paste an existing file, rename it, then “CTRL-A, DEL” the content. In a few short keystrokes I’ve got my new file. Even if the original file wasn’t the right type, it doesn’t matter – I will rename it anyway, including the extension. It works well enough if the place I am adding the file to doesn’t have much in it already. But if there are a lot of files at that level, it sucks, because the new file will have the name “Copy of xyz”, causing it to be moved into the ‘C’ section of the alphabetically sorted items, which might be far, far away from the original file (and so I tend to try and copy a file that starts with ‘C’ *evil grin*). Using ‘Export Template’ To be completely fair I should at least mention this feature. I’m not even sure if this is new in VS 2010 or not (I think so). But it allows you to export a project item or items, including potential project references required by it. Then it becomes a new item in the available ‘installed templates’. No doubt this is useful to help bootstrap new projects. But that still requires you to go through the ‘New Item’ dialog. Adding Files with VSNewFile So hopefully I have sufficiently defined the problem and got a few of you to think, “Yeah, me too!”… What VSNewFile does is let you skip the dialog entirely by adding project items directly to the context menu. But it does a bit more than that, so do read on. For example, to add a new class, you can right-click the location and pick that option. A new .cs file is instantly added to the project, and the new item is selected and put into the ‘rename’ mode immediately. The default items available are shown here. But you can customize them. You can also customize the content of each template. To do so, you create a directory in your documents folder, ‘VSNewFile Templates’. In there, you drop the templates you want to use, but you name them in a particular way. For example, here’s a template that will add a new item named “Add TITLE”. It will add a project item named “SOMEFILE.foo” (or ‘SOMEFILE1.foo’ if that exists, etc). The format of the file name is: <ORDER>_<KEY>_<BASE FILENAME>_<ICON ID>_<TITLE>.<EXTENTION> Where: <ORDER> is a number that lets you determine the order of the items in the menu (relative to each other). <KEY> is a case sensitive identifier different for each template item. More on that later. <BASE FILENAME> is the default name of the file, which doesn’t matter that much, since they will be renaming it anyway. <ICON ID> is a number the dictates the icon used for the menu item. There are a huge number of built-in choices. More on that later. <TITLE> is the string that will appear in the menu. And, the contents of the file are the default content for the item (the ‘template’). The content of the file can contain anything you want, of course. But it also supports two tokens: %NAMESPACE% and %FILENAME%, which will be replaced with the corresponding values. Here is the content of this sample: testing Namespace = %NAMESPACE% Filename = %FILENAME% I kind went back and forth on this. I could have made it so there’d be an XML or JSON file that defines the templates, instead of cramming all this data into the filename itself. I like the simplicity of this better. It makes it easy to customize since you can literally just throw these files around, copy them from someone else, etc, without worrying about merge data into a central description file, in whatever format. Here’s our new item showing up: Practical Use One immediate thing I am using this for is to make it easier to add very commonly used scripts to my web projects. For example, uh, say, jQuery? :) All I need to do is drop jQuery-1.4.2.js and jQuery-1.4.2.min.js into the templates folder, provide the order, title, etc, and then instantly, I can now add jQuery to any project I have without even thinking about “where is jQuery? Can I copy it from that other project?” Using the KEY There are two reasons for the ‘key’ portion of the item. First, it allows you to turn off the built-in, default templates, which are: FILE = Add File (generic, empty file) VB = Add VB Class CS = Add C# Class (includes some basic usings) HTML = Add HTML page (includes basic structure, doctype, etc) JS = Add Script (includes an immediately-invoking function closure) To turn one off, just include a file with the name “_<KEY>”. For example, to turn off all the items except our custom one, you do this: The other reason for the key is that there are new Visual Studio Commands created for each one. This makes it possible to bind a keyboard shortcut to one of them. So you could, for example, have a keyboard combination that adds a new web page to your website, or a new CS class to your class library, etc. Here is our sample item showing up in the keyboard bindings option. Even though the contents of the template directory may change from one launch of Visual Studio to the next, the bindings will remain attached to any item with a particular key, thanks to it taking care not to lose keyboard bindings even though the commands are completely recreated each time. The Icon Face ID Visual Studio uses a Microsoft Office style add-in mechanism, I gather. There are a predetermined set of built-in icons available. You can use your own icons when developing add-ins, of course, but I’m no designer. I just wanted to find appropriate-ish icons for the built-in templates, and allow you to choose from an existing built-in icon for your own. Unfortunately, there isn’t a lot out there on the interwebs that helps you figure out what the built-in types are. There’s an MSDN article that describes at length a way to create a program that lists all the icons. But I don’t want to write a program to figure them out! Just show them to me! Sheesh :) Thankfully, someone out there felt the same way, and uses a novel hack to get the icons to show up in an outlook toolbar. He then painstakingly took screenshots of them, one group at a time. It isn’t complete though – there are tens of thousands of icons. But it’s good enough. If anyone has an exhaustive list, please let me, and the rest of the add-in community know. Icon Face ID Reference Installing the Add-in It will work with Visual Studio 2008 and Visual Studio 2010. Just unzip the release into your Documents\Visual Studio 20xx\Addins folder. It contains the binary and the Visual Studio “.addin” file. For example, the path to mine is: C:\Users\InfinitiesLoop\Documents\Visual Studio 2010\Addins Conclusion So that’s it! I hope you find it as useful as I have. It’s on GitHub, so if you’re into this kind of thing, please do fork it and improve it! Reference: VSNewFile on GitHub VSNewFile release on GitHub Icon Face ID Reference

Read the article

How to Avoid Your Next 12-Month Science Project

- by constant

While most customers immediately understand how the magic of Oracle's Hybrid Columnar Compression, intelligent storage servers and flash memory make Exadata uniquely powerful against home-grown database systems, some people think that Exalogic is nothing more than a bunch of x86 servers, a storage appliance and an InfiniBand (IB) network, built into a single rack. After all, isn't this exactly what the High Performance Computing (HPC) world has been doing for decades? On the surface, this may be true. And some people tried exactly that: They tried to put together their own version of Exalogic, but then they discover there's a lot more to building a system than buying hardware and assembling it together. IT is not Ikea. Why is that so? Could it be there's more going on behind the scenes than merely putting together a bunch of servers, a storage array and an InfiniBand network into a rack? Let's explore some of the special sauce that makes Exalogic unique and un-copyable, so you can save yourself from your next 6- to 12-month science project that distracts you from doing real work that adds value to your company. Engineering Systems is Hard Work! The backbone of Exalogic is its InfiniBand network: 4 times better bandwidth than even 10 Gigabit Ethernet, and only about a tenth of its latency. What a potential for increased scalability and throughput across the middleware and database layers! But InfiniBand is a beast that needs to be tamed: It is true that Exalogic uses a standard, open-source Open Fabrics Enterprise Distribution (OFED) InfiniBand driver stack. Unfortunately, this software has been developed by the HPC community with fastest speed in mind (which is good) but, despite the name, not many other enterprise-class requirements are included (which is less good). Here are some of the improvements that Oracle's InfiniBand development team had to add to the OFED stack to make it enterprise-ready, simply because typical HPC users didn't have the need to implement them: More than 100 bug fixes in the pieces that were not related to the Message Passing Interface Protocol (MPI), which is the protocol that HPC users use most of the time, but which is less useful in the enterprise. Performance optimizations and tuning across the whole IB stack: From Switches, Host Channel Adapters (HCAs) and drivers to low-level protocols, middleware and applications. Yes, even the standard HPC IB stack could be improved in terms of performance. Ethernet over IB (EoIB): Exalogic uses InfiniBand internally to reach high performance, but it needs to play nicely with datacenters around it. That's why Oracle added Ethernet over InfiniBand technology to it that allows for creating many virtual 10GBE adapters inside Exalogic's nodes that are aggregated and connected to Exalogic's IB gateway switches. While this is an open standard, it's up to the vendor to implement it. In this case, Oracle integrated the EoIB stack with Oracle's own IB to 10GBE gateway switches, and made it fully virtualized from the beginning. This means that Exalogic customers can completely rewire their server infrastructure inside the rack without having to physically pull or plug a single cable - a must-have for every cloud deployment. Anybody who wants to match this level of integration would need to add an InfiniBand switch development team to their project. Or just buy Oracle's gateway switches, which are conveniently shipped with a whole server infrastructure attached! IPv6 support for InfiniBand's Sockets Direct Protocol (SDP), Reliable Datagram Sockets (RDS), TCP/IP over IB (IPoIB) and EoIB protocols. Because no IPv6 = not very enterprise-class. HA capability for SDP. High Availability is not a big requirement for HPC, but for enterprise-class application servers it is. Every node in Exalogic's InfiniBand network is connected twice for redundancy. If any cable or port or HCA fails, there's always a replacement link ready to take over. This requires extra magic at the protocol level to work. So in addition to Weblogic's failover capabilities, Oracle implemented IB automatic path migration at the SDP level to avoid unnecessary failover operations at the middleware level. Security, for example spoof-protection. Another feature that is less important for traditional users of InfiniBand, but very important for enterprise customers. InfiniBand Partitioning and Quality-of-Service (QoS): One of the first questions we get from customers about Exalogic is: “How can we implement multi-tenancy?” The answer is to partition your IB network, which effectively creates many networks that work independently and that are protected at the lowest networking layer possible. In addition to that, QoS allows administrators to prioritize traffic flow in multi-tenancy environments so they can keep their service levels where it matters most. Resilient IB Fabric Management: InfiniBand is a self-managing network, so a lot of the magic lies in coming up with the right topology and in teaching the subnet manager how to properly discover and manage the network. Oracle's Infiniband switches come with pre-integrated, highly available fabric management with seamless integration into Oracle Enterprise Manager Ops Center. In short: Oracle elevated the OFED InfiniBand stack into an enterprise-class networking infrastructure. Many years and multiple teams of manpower went into the above improvements - this is something you can only get from Oracle, because no other InfiniBand vendor can give you these features across the whole stack! Exabus: Because it's not About the Size of Your Network, it's How You Use it! So let's assume that you somehow were able to get your hands on an enterprise-class IB driver stack. Or maybe you don't care and are just happy with the standard OFED one? Anyway, the next step is to actually leverage that InfiniBand performance. Here are the choices: Use traditional TCP/IP on top of the InfiniBand stack, Develop your own integration between your middleware and the lower-level (but faster) InfiniBand protocols. While more bandwidth is always a good thing, it's actually the low latency that enables superior performance for your applications when running on any networking infrastructure: The lower the latency, the faster the response travels through the network and the more transactions you can close per second. The reason why InfiniBand is such a low latency technology is that it gets rid of most if not all of your traditional networking protocol stack: Data is literally beamed from one region of RAM in one server into another region of RAM in another server with no kernel/drivers/UDP/TCP or other networking stack overhead involved! Which makes option 1 a no-go: Adding TCP/IP on top of InfiniBand is like adding training wheels to your racing bike. It may be ok in the beginning and for development, but it's not quite the performance IB was meant to deliver. Which only leaves option 2: Integrating your middleware with fast, low-level InfiniBand protocols. And this is what Exalogic's "Exabus" technology is all about. Here are a few Exabus features that help applications leverage the performance of InfiniBand in Exalogic: RDMA and SDP integration at the JDBC driver level (SDP), for Oracle Weblogic (SDP), Oracle Coherence (RDMA), Oracle Tuxedo (RDMA) and the new Oracle Traffic Director (RDMA) on Exalogic. Using these protocols, middleware can communicate a lot faster with each other and the Oracle database than by using standard networking protocols, Seamless Integration of Ethernet over InfiniBand from Exalogic's Gateway switches into the OS, Oracle Weblogic optimizations for handling massive amounts of parallel transactions. Because if you have an 8-lane Autobahn, you also need to improve your ramps so you can feed it with many cars in parallel. Integration of Weblogic with Oracle Exadata for faster performance, optimized session management and failover. As you see, “Exabus” is Oracle's word for describing all the InfiniBand enhancements Oracle put into Exalogic: OFED stack enhancements, protocols for faster IB access, and InfiniBand support and optimizations at the virtualization and middleware level. All working together to deliver the full potential of InfiniBand performance. Who else has 100% control over their middleware so they can develop their own low-level protocol integration with InfiniBand? Even if you take an open source approach, you're looking at years of development work to create, test and support a whole new networking technology in your middleware! The Extras: Less Hassle, More Productivity, Faster Time to Market And then there are the other advantages of Engineered Systems that are true for Exalogic the same as they are for every other Engineered System: One simple purchasing process: No headaches due to endless RFPs and no “Will X work with Y?” uncertainties. Everything has been engineered together: All kinds of bugs and problems have been already fixed at the design level that would have only manifested themselves after you have built the system from scratch. Everything is built, tested and integrated at the factory level . Less integration pain for you, faster time to market. Every Exalogic machine world-wide is identical to Oracle's own machines in the lab: Instant replication of any problems you may encounter, faster time to resolution. Simplified patching, management and operations. One throat to choke: Imagine finger-pointing hell for systems that have been put together using several different vendors. Oracle's Engineered Systems have a single phone number that customers can call to get their problems solved. For more business-centric values, read The Business Value of Engineered Systems. Conclusion: Buy Exalogic, or get ready for a 6-12 Month Science Project And here's the reason why it's not easy to "build your own Exalogic": There's a lot of work required to make such a system fly. In fact, anybody who is starting to "just put together a bunch of servers and an InfiniBand network" is really looking at a 6-12 month science project. And the outcome is likely to not be very enterprise-class. And it won't have Exalogic's performance either. Because building an Engineered System is literally rocket science: It takes a lot of time, effort, resources and many iterations of design/test/analyze/fix to build such a system. That's why InfiniBand has been reserved for HPC scientists for such a long time. And only Oracle can bring the power of InfiniBand in an enterprise-class, ready-to use, pre-integrated version to customers, without the develop/integrate/support pain. For more details, check the new Exalogic overview white paper which was updated only recently. P.S.: Thanks to my colleagues Ola, Paul, Don and Andy for helping me put together this article! var flattr_uid = '26528'; var flattr_tle = 'How to Avoid Your Next 12-Month Science Project'; var flattr_dsc = 'While most customers immediately understand how the magic of Oracle's Hybrid Columnar Compression, intelligent storage servers and flash memory make Exadata uniquely powerful against home-grown database systems, some people think that Exalogic is nothing more than a bunch of x86 servers, a storage appliance and an InfiniBand (IB) network, built into a single rack.After all, isn't this exactly what the High Performance Computing (HPC) world has been doing for decades?On the surface, this may be true. And some people tried exactly that: They tried to put together their own version of Exalogic, but then they discover there's a lot more to building a system than buying hardware and assembling it together. IT is not Ikea.Why is that so? Could it be there's more going on behind the scenes than merely putting together a bunch of servers, a storage array and an InfiniBand network into a rack? Let's explore some of the special sauce that makes Exalogic unique and un-copyable, so you can save yourself from your next 6- to 12-month science project that distracts you from doing real work that adds value to your company.'; var flattr_tag = 'Engineered Systems,Engineered Systems,Infiniband,Integration,latency,Oracle,performance'; var flattr_cat = 'text'; var flattr_url = 'http://constantin.glez.de/blog/2012/04/how-avoid-your-next-12-month-science-project'; var flattr_lng = 'en_GB'

Read the article

Metro: Understanding Observables

- by Stephen.Walther

The goal of this blog entry is to describe how the Observer Pattern is implemented in the WinJS library. You learn how to create observable objects which trigger notifications automatically when their properties are changed. Observables enable you to keep your user interface and your application data in sync. For example, by taking advantage of observables, you can update your user interface automatically whenever the properties of a product change. Observables are the foundation of declarative binding in the WinJS library. The WinJS library is not the first JavaScript library to include support for observables. For example, both the KnockoutJS library and the Microsoft Ajax Library (now part of the Ajax Control Toolkit) support observables. Creating an Observable Imagine that I have created a product object like this: var product = { name: "Milk", description: "Something to drink", price: 12.33 }; Nothing very exciting about this product. It has three properties named name, description, and price. Now, imagine that I want to be notified automatically whenever any of these properties are changed. In that case, I can create an observable product from my product object like this: var observableProduct = WinJS.Binding.as(product); This line of code creates a new JavaScript object named observableProduct from the existing JavaScript object named product. This new object also has a name, description, and price property. However, unlike the properties of the original product object, the properties of the observable product object trigger notifications when the properties are changed. Each of the properties of the new observable product object has been changed into accessor properties which have both a getter and a setter. For example, the observable product price property looks something like this: price: { get: function () { return this.getProperty(“price”); } set: function (value) { this.setProperty(“price”, value); } } When you read the price property then the getProperty() method is called and when you set the price property then the setProperty() method is called. The getProperty() and setProperty() methods are methods of the observable product object. The observable product object supports the following methods and properties: · addProperty(name, value) – Adds a new property to an observable and notifies any listeners. · backingData – An object which represents the value of each property. · bind(name, action) – Enables you to execute a function when a property changes. · getProperty(name) – Returns the value of a property using the string name of the property. · notify(name, newValue, oldValue) – A private method which executes each function in the _listeners array. · removeProperty(name) – Removes a property and notifies any listeners. · setProperty(name, value) – Updates a property and notifies any listeners. · unbind(name, action) – Enables you to stop executing a function in response to a property change. · updateProperty(name, value) – Updates a property and notifies any listeners. So when you create an observable, you get a new object with the same properties as an existing object. However, when you modify the properties of an observable object, then you can notify any listeners of the observable that the value of a particular property has changed automatically. Imagine that you change the value of the price property like this: observableProduct.price = 2.99; In that case, the following sequence of events is triggered: 1. The price setter calls the setProperty(“price”, 2.99) method 2. The setProperty() method updates the value of the backingData.price property and calls the notify() method 3. The notify() method executes each function in the collection of listeners associated with the price property Creating Observable Listeners If you want to be notified when a property of an observable object is changed, then you need to register a listener. You register a listener by using the bind() method like this: (function () { "use strict"; var app = WinJS.Application; app.onactivated = function (eventObject) { if (eventObject.detail.kind === Windows.ApplicationModel.Activation.ActivationKind.launch) { // Simple product object var product = { name: "Milk", description: "Something to drink", price: 12.33 }; // Create observable product var observableProduct = WinJS.Binding.as(product); // Execute a function when price is changed observableProduct.bind("price", function (newValue) { console.log(newValue); }); // Change the price observableProduct.price = 2.99; } }; app.start(); })(); In the code above, the bind() method is used to associate the price property with a function. When the price property is changed, the function logs the new value of the price property to the Visual Studio JavaScript console. The price property is associated with the function using the following line of code: // Execute a function when price is changed observableProduct.bind("price", function (newValue) { console.log(newValue); }); Coalescing Notifications If you make multiple changes to a property – one change immediately following another – then separate notifications won’t be sent. Instead, any listeners are notified only once. The notifications are coalesced into a single notification. For example, in the following code, the product price property is updated three times. However, only one message is written to the JavaScript console. Only the last value assigned to the price property is written to the JavaScript Console window: // Simple product object var product = { name: "Milk", description: "Something to drink", price: 12.33 }; // Create observable product var observableProduct = WinJS.Binding.as(product); // Execute a function when price is changed observableProduct.bind("price", function (newValue) { console.log(newValue); }); // Change the price observableProduct.price = 3.99; observableProduct.price = 2.99; observableProduct.price = 1.99; Only the last value assigned to price, the value 1.99, appears in the console: If there is a time delay between changes to a property then changes result in different notifications. For example, the following code updates the price property every second: // Simple product object var product = { name: "Milk", description: "Something to drink", price: 12.33 }; // Create observable product var observableProduct = WinJS.Binding.as(product); // Execute a function when price is changed observableProduct.bind("price", function (newValue) { console.log(newValue); }); // Add 1 to price every second window.setInterval(function () { observableProduct.price += 1; }, 1000); In this case, separate notification messages are logged to the JavaScript Console window: If you need to prevent multiple notifications from being coalesced into one then you can take advantage of promises. I discussed WinJS promises in a previous blog entry: http://stephenwalther.com/blog/archive/2012/02/22/windows-web-applications-promises.aspx Because the updateProperty() method returns a promise, you can create different notifications for each change in a property by using the following code: // Change the price observableProduct.updateProperty("price", 3.99) .then(function () { observableProduct.updateProperty("price", 2.99) .then(function () { observableProduct.updateProperty("price", 1.99); }); }); In this case, even though the price is immediately changed from 3.99 to 2.99 to 1.99, separate notifications for each new value of the price property are sent. Bypassing Notifications Normally, if a property of an observable object has listeners and you change the property then the listeners are notified. However, there are certain situations in which you might want to bypass notification. In other words, you might need to change a property value silently without triggering any functions registered for notification. If you want to change a property without triggering notifications then you should change the property by using the backingData property. The following code illustrates how you can change the price property silently: // Simple product object var product = { name: "Milk", description: "Something to drink", price: 12.33 }; // Create observable product var observableProduct = WinJS.Binding.as(product); // Execute a function when price is changed observableProduct.bind("price", function (newValue) { console.log(newValue); }); // Change the price silently observableProduct.backingData.price = 5.99; console.log(observableProduct.price); // Writes 5.99 The price is changed to the value 5.99 by changing the value of backingData.price. Because the observableProduct.price property is not set directly, any listeners associated with the price property are not notified. When you change the value of a property by using the backingData property, the change in the property happens synchronously. However, when you change the value of an observable property directly, the change is always made asynchronously. Summary The goal of this blog entry was to describe observables. In particular, we discussed how to create observables from existing JavaScript objects and bind functions to observable properties. You also learned how notifications are coalesced (and ways to prevent this coalescing). Finally, we discussed how you can use the backingData property to update an observable property without triggering notifications. In the next blog entry, we’ll see how observables are used with declarative binding to display the values of properties in an HTML document.

Read the article

A Closable jQuery Plug-in

- by Rick Strahl

In my client side development I deal a lot with content that pops over the main page. Be it data entry ‘windows’ or dialogs or simple pop up notes. In most cases this behavior goes with draggable windows, but sometimes it’s also useful to have closable behavior on static page content that the user can choose to hide or otherwise make invisible or fade out. Here’s a small jQuery plug-in that provides .closable() behavior to most elements by using either an image that is provided or – more appropriately by using a CSS class to define the picture box layout. /* * * Closable * * Makes selected DOM elements closable by making them * invisible when close icon is clicked * * Version 1.01 * @requires jQuery v1.3 or later * * Copyright (c) 2007-2010 Rick Strahl * http://www.west-wind.com/ * * Licensed under the MIT license: * http://www.opensource.org/licenses/mit-license.php Support CSS: .closebox { position: absolute; right: 4px; top: 4px; background-image: url(images/close.gif); background-repeat: no-repeat; width: 14px; height: 14px; cursor: pointer; opacity: 0.60; filter: alpha(opacity="80"); } .closebox:hover { opacity: 0.95; filter: alpha(opacity="100"); } Options: * handle Element to place closebox into (like say a header). Use if main element and closebox container are two different elements. * closeHandler Function called when the close box is clicked. Return true to close the box return false to keep it visible. * cssClass The CSS class to apply to the close box DIV or IMG tag. * imageUrl Allows you to specify an explicit IMG url that displays the close icon. If used bypasses CSS image styling. * fadeOut Optional provide fadeOut speed. Default no fade out occurs */ (function ($) { $.fn.closable = function (options) { var opt = { handle: null, closeHandler: null, cssClass: "closebox", imageUrl: null, fadeOut: null }; $.extend(opt, options); return this.each(function (i) { var el = $(this); var pos = el.css("position"); if (!pos || pos == "static") el.css("position", "relative"); var h = opt.handle ? $(opt.handle).css({ position: "relative" }) : el; var div = opt.imageUrl ? $("<img>").attr("src", opt.imageUrl).css("cursor", "pointer") : $("<div>"); div.addClass(opt.cssClass) .click(function (e) { if (opt.closeHandler) if (!opt.closeHandler.call(this, e)) return; if (opt.fadeOut) $(el).fadeOut(opt.fadeOut); else $(el).hide(); }); if (opt.imageUrl) div.css("background-image", "none"); h.append(div); }); } })(jQuery); The plugin can be applied against any selector that is a container (typically a div tag). The close image or close box is provided typically by way of a CssClass - .closebox by default – which supplies the image as part of the CSS styling. The default styling for the box looks something like this: .closebox { position: absolute; right: 4px; top: 4px; background-image: url(images/close.gif); background-repeat: no-repeat; width: 14px; height: 14px; cursor: pointer; opacity: 0.60; filter: alpha(opacity="80"); } .closebox:hover { opacity: 0.95; filter: alpha(opacity="100"); } Alternately you can also supply an image URL which overrides the background image in the style sheet. I use this plug-in mostly on pop up windows that can be closed, but it’s also quite handy for remove/delete behavior in list displays like this: you can find this sample here to look to play along: http://www.west-wind.com/WestwindWebToolkit/Samples/Ajax/AmazonBooks/BooksAdmin.aspx For closable windows it’s nice to have something reusable because in my client framework there are lots of different kinds of windows that can be created: Draggables, Modal Dialogs, HoverPanels etc. and they all use the client .closable plug-in to provide the closable operation in the same way with a few options. Plug-ins are great for this sort of thing because they can also be aggregated and so different components can pick and choose the behavior they want. The window here is a draggable, that’s closable and has shadow behavior and the server control can simply generate the appropriate plug-ins to apply to the main <div> tag: $().ready(function() { $('#ctl00_MainContent_panEditBook') .closable({ handle: $('#divEditBook_Header') }) .draggable({ dragDelay: 100, handle: '#divEditBook_Header' }) .shadow({ opacity: 0.25, offset: 6 }); }) The window is using the default .closebox style and has its handle set to the header bar (Book Information). The window is just closable to go away so no event handler is applied. Actually I cheated – the actual page’s .closable is a bit more ugly in the sample as it uses an image from a resources file: .closable({ imageUrl: '/WestWindWebToolkit/Samples/WebResource.axd?d=TooLongAndNastyToPrint', handle: $('#divEditBook_Header')}) so you can see how to apply a custom image, which in this case is generated by the server control wrapping the client DragPanel. More interesting maybe is to apply the .closable behavior to list scenarios. For example, each of the individual items in the list display also are .closable using this plug-in. Rather than having to define each item with Html for an image, event handler and link, when the client template is rendered the closable behavior is attached to the list. Here I’m using client-templating and the code that this is done with looks like this: function loadBooks() { showProgress(); // Clear the content $("#divBookListWrapper").empty(); var filter = $("#" + scriptVars.lstFiltersId).val(); Proxy.GetBooks(filter, function(books) { $(books).each(function(i) { updateBook(this); showProgress(true); }); }, onPageError); } function updateBook(book,highlight) { // try to retrieve the single item in the list by tag attribute id var item = $(".bookitem[tag=" +book.Pk +"]"); // grab and evaluate the template var html = parseTemplate(template, book); var newItem = $(html) .attr("tag", book.Pk.toString()) .click(function() { var pk = $(this).attr("tag"); editBook(this, parseInt(pk)); }) .closable({ closeHandler: function(e) { removeBook(this, e); }, imageUrl: "../../images/remove.gif" }); if (item.length > 0) item.after(newItem).remove(); else newItem.appendTo($("#divBookListWrapper")); if (highlight) { newItem .addClass("pulse") .effect("bounce", { distance: 15, times: 3 }, 400); setTimeout(function() { newItem.removeClass("pulse"); }, 1200); } } Here the closable behavior is applied to each of the items along with an event handler, which is nice and easy compared to having to embed the right HTML and click handling into each item in the list individually via markup. Ideally though (and these posts make me realize this often a little late) I probably should set up a custom cssClass to handle the rendering – maybe a CSS class called .removebox that only changes the image from the default box image. This example also hooks up an event handler that is fired in response to the close. In the list I need to know when the remove button is clicked so I can fire of a service call to the server to actually remove the item from the database. The handler code can also return false; to indicate that the window should not be closed optionally. Returning true will close the window. You can find more information about the .closable class behavior and options here: .closable Documentation Plug-ins make Server Control JavaScript much easier I find this plug-in immensely useful especial as part of server control code, because it simplifies the code that has to be generated server side tremendously. This is true of plug-ins in general which make it so much easier to create simple server code that only generates plug-in options, rather than full blocks of JavaScript code. For example, here’s the relevant code from the DragPanel server control which generates the .closable() behavior: if (this.Closable && !string.IsNullOrEmpty(DragHandleID) ) { string imageUrl = this.CloseBoxImage; if (imageUrl == "WebResource" ) imageUrl = ScriptProxy.GetWebResourceUrl(this, this.GetType(), ControlResources.CLOSE_ICON_RESOURCE); StringBuilder closableOptions = new StringBuilder("imageUrl: '" + imageUrl + "'"); if (!string.IsNullOrEmpty(this.DragHandleID)) closableOptions.Append(",handle: $('#" + this.DragHandleID + "')"); if (!string.IsNullOrEmpty(this.ClientDialogHandler)) closableOptions.Append(",handler: " + this.ClientDialogHandler); if (this.FadeOnClose) closableOptions.Append(",fadeOut: 'slow'"); startupScript.Append(@" .closable({ " + closableOptions + "})"); } The same sort of block is then used for .draggable and .shadow which simply sets options. Compared to the code I used to have in pre-jQuery versions of my JavaScript toolkit this is a walk in the park. In those days there was a bunch of JS generation which was ugly to say the least. I know a lot of folks frown on using server controls, especially the UI is client centric as the example is. However, I do feel that server controls can greatly simplify the process of getting the right behavior attached more easily and with the help of IntelliSense. Often the script markup is easier is especially if you are dealing with complex, multiple plug-in associations that often express more easily with property values on a control. Regardless of whether server controls are your thing or not this plug-in can be useful in many scenarios. Even in simple client-only scenarios using a plug-in with a few simple parameters is nicer and more consistent than creating the HTML markup over and over again. I hope some of you find this even a small bit as useful as I have. Related Links Download jquery.closable West Wind Web Toolkit jQuery Plug-ins © Rick Strahl, West Wind Technologies, 2005-2010Posted in jQuery ASP.NET JavaScript

Read the article

Craftsmanship is ALL that Matters

- by Wayne Molina

Today, I'm going to talk about a touchy subject: the notion of working in a company that doesn't use the prescribed "best practices" in its software development endeavours. Over the years I have, using a variety of pseudonyms, asked this question on popular programming forums. Although I always add in some minor variation of the story to avoid suspicion that it's the same person posting, the crux of the tale remains the same: A Programmer’s Tale A junior software developer has just started a new job at an average company, creating average line-of-business applications for internal use (the most typical scenario programmers find themselves in). This hypothetical newbie has spent a lot of time reading up on the "theory" of software development, devouring books, blogs and screencasts from well-known and respected software developers in the community in order to broaden his knowledge and "do what the pros do". He begins his new job, eager to apply what he's learned on a real-world project only to discover that his new teammates doesn't use any of those concepts and techniques. They hack their way through development, or in a best-case scenario use some homebrew, thrown-together semblance of a framework for their applications that follows not one of the best practices suggested by the “elite” in the software community - things like TDD (TDD as a "best practice" is the only subjective part of this post, but it's included here due to a very large following of respected developers who consider it one), the SOLID principles, well-known and venerable tools, even version control in a worst case and truly nightmarish scenario. Our protagonist is frustrated that he isn't doing things the "proper" way - a way he's spent personal time digesting and learning about and, more importantly, a way that some of the top developers in the industry advocate - and turns to a forum to ask the advice of his peers. Invariably the answer I, in the guise of the concerned newbie, will receive is that A) I don't know anything and should just shut my mouth and sling code the bad way like everybody else on the team, and B) These "best practices" are fade or a joke, and the only thing that matters is shipping software to your customers. I am here today to say that anyone who says this, or anything like it, is not only full of crap but indicative of exactly the type of “developer” that has helped to give our industry a bad name. Here is why: One Who Knows Nothing, Understands Nothing On one hand, you have the cognoscenti of the .NET development world. Guys like James Avery, Jeremy Miller, Ayende Rahien and Rob Conery; all well-respected and noted programmers that are pretty much our version of celebrities. These guys write blogs, books, and post videos outlining the "correct" way of writing software to make sure it not only works but is maintainable and extensible and a joy to work with. They tout the virtues of the SOLID principles, or of using TDD/BDD, or using a mature ORM like NHibernate, Subsonic or even Entity Framework. On the other hand, you have Joe Everyman, Lead Software Developer at Initrode Corporation - in our hypothetical story Joe is the junior developer's new boss. Joe's been with Initrode for 10 years, starting as the company’s very first programmer and over the years building up a little fiefdom of his own until at the present he’s in charge of all Initrode’s software development. Joe writes code the same way he always has, without bothering to learn much, if anything. He looked at NHibernate once and found it was "too hard", so he uses a primitive implementation of the TableDataGateway pattern as a wrapper around SqlClient.SqlConnection and SqlClient.SqlCommand instead of an actual ORM (or, in a better case scenario, has created his own ORM); the thought of using LINQ or Entity Framework or really anything other than his own hastily homebrew solution has never occurred to him. He doesn't understand TDD and considers “testing” to be using the .NET debugger to step through code, or simply loading up an app and entering some values to see if it works. He doesn't really understand SOLID, and he doesn't care to. He's worked as a programmer for years, and that's all that counts. Right? WRONG. Who would you rather trust? Someone with years of experience and who writes books, creates well-known software and is akin to a celebrity, or someone with no credibility outside their own minute environment who throws around their clout and company seniority as the "proof" of their ability? Joe Everyman may have years of experience at Initrode as a programmer, and says to do things "his way" but someone like Jeremy Miller or Ayende Rahien have years of experience at companies just like Initrode, THEY know ten times more than Joe Everyman knows or could ever hope to know, and THEY say to do things "this way". Here's another way of thinking about it: If you wanted to get into politics and needed advice on the best way to do it, would you rather listen to the mayor of Hicktown, USA or Barack Obama? One is a small-time nobody while the other is very well-known and, as such, would probably have much more accurate and beneficial advice. NOTE: The selection of Barack Obama as an example in no way, shape, or form suggests a political affiliation or political bent to this post or blog, and no political innuendo should be mistakenly read from it; the intent was merely to compare a small-time persona with a well-known persona in a non-software field. Feel free to replace the name "Barack Obama" with any well-known Congressman, Senator or US President of your choice. DIY Considered Harmful I will say right now that the homebrew development environment is the WORST one for an aspiring programmer, because it relies on nothing outside it's own little box - no useful skill outside of the small pond. If you are forced to use some half-baked, homebrew ORM created by your Director of Software, you are not learning anything valuable you can take with you in the future; now, if you plan to stay at Initrode for 10 years like Joe Everyman, this is fine and dandy. However if, like most of us, you want to advance your career outside a very narrow space you will do more harm than good by sticking it out in an environment where you, to be frank, know better than everybody else because you are aware of alternative and, in almost most cases, better tools for the job. A junior developer who understands why the SOLID principles are good to follow, or why TDD is beneficial, or who knows that it's better to use NHibernate/Subsonic/EF/LINQ/well-known ORM versus some in-house one knows better than a senior developer with 20 years experience who doesn't understand any of that, plain and simple. Anyone who disagrees is either a liar, or someone who, just like Joe Everyman, Lead Developer, relies on seniority and tenure rather than adapting their knowledge as things evolve. In many cases, the Joe Everymans of the world act this way out of fear - they cannot possibly fathom that a “junior” could know more than them; after all, they’ve spent 10 or more years in the same company, doing the same job, cranking out the same shoddy software. And here comes a newbie who hasn’t spent 10+ years doing the same things, with a fresh and often radical take on the craft, and Joe Everyman is afraid he might have to put some real effort into his career again instead of just pointing to his 10 years of service at Initrode as “proof” that he’s good, or that he might have to learn something new to improve; in most cases the problem is Joe Everyman, and by extension Initrode itself, has a mentality of just being “good enough”, and mediocrity is the rule of the day. A Thorn Bush is No Place for a Phoenix My advice is that if you work on a team where they don't use the best practices that some of the most famous developers in our field say is the "right" way to do things (and have legions of people who agree), and YOU are aware of these practices and can see why they work, then LEAVE the company. Find a company where they DO care about quality, and craftsmanship, otherwise you will never be happy. There is no point in "dumbing" yourself down to the level of your co-workers and slinging code without care to craftsmanship. In 95% of these situations there will be no point in bringing it to the attention of Joe Everyman because he won't listen; he might even get upset that someone is trying to "upstage" him and fire the newbie, and replace someone with loads of untapped potential with a drone that will just nod affirmatively and grind out the tasks assigned without question. Find a company that has people smart enough to listen to the "best and brightest", and be happy. Do not, I repeat, DO NOT waste away in a job working for ignorant people. At the end of the day software development IS a craft, and a level of craftsmanship is REQUIRED for any serious professional. When you have knowledgeable people with the credibility to back it up saying one thing, and small-time people who are, to put it bluntly, nobodies in the field saying and doing something totally different because they can't comprehend it, leave the nobodies to their own devices to fade into obscurity. Work for a company that uses REAL software engineering techniques and really cares about craftsmanship. The biggest issue affecting our career, and the reason software development has never been the respected, white-collar career it was meant to be, is because hacks and charlatans can pass themselves off as professional programmers without following a lick of good advice from programmers much better at the craft than they are. These modern day snake-oil salesmen entrench themselves in companies by hoodwinking non-technical businesspeople and customers with their shoddy wares, end up in senior/lead/executive positions, and push their lack of knowledge on everybody unfortunate enough to work with/for/under them, crushing any dissent or voices of reason and change under their tyrannical heel and leaving behind a trail of dismayed and, often, unemployed junior developers who were made examples of to keep up the facade and avoid the shadow of doubt being cast upon them. To sum this up another way: If you surround yourself with learned people, you will learn. Surround yourself with ignorant people who can't, as the saying goes, see the forest through the trees, and you'll learn nothing of any real value. There is more to software development than just writing code, and the end goal should not be just "shipping software", it should be shipping software that is extensible, maintainable, and above all else software whose creation has broadened your knowledge in some capacity, even if a minor one. An eager newbie who knows theory and thirsts for knowledge can easily be moulded and taught the advanced topics, but the same can't be said of someone who only cares about the finish line. This industry needs more people espousing the benefits of software craftsmanship and proper software engineering techniques, and less Joe Everymans who are unwilling to adapt or foster new ways of thinking. Conclusion - I Cast “Protection from Fire” I am fairly certain this post will spark some controversy and might even invite the flames. Please keep in mind these are opinions and nothing more. A little healthy rant and subsequent flamewar can be good for the soul once in a while. To paraphrase The Godfather: It helps to get rid of the bad blood.

Read the article

The DOS DEBUG Environment

- by MarkPearl

Today I thought I would go back in time and have a look at the DEBUG command that has been available since the beginning of dawn in DOS, MS-DOS and Microsoft Windows. up to today I always knew it was there, but had no clue on how to use it so for those that are interested this might be a great geek party trick to pull out when you want the awe the younger generation and want to show them what “real” programming is about. But wait, you will have to do it relatively quickly as it seems like DEBUG was finally dumped from the Windows group in Windows 7. Not to worry, pull out that Windows XP box which will get you even more geek points and you can still poke DEBUG a bit. So, for those that are interested and want to find out a bit about the history of DEBUG read the wiki link here. That all put aside, lets get our hands dirty.. How to Start DEBUG in Windows Make sure your version of Windows supports DEBUG. Open up a console window Make a directory where you want to play with debug – in my instance I called it C221 Enter the directory and type Debug You will get a response with a – as illustrated in the image below… The commands available in DEBUG There are several commands available in DEBUG. The most common ones are A (Assemble) R (Register) T (Trace) G (Go) D (Dump or Display) U (Unassemble) E (Enter) P (Proceed) N (Name) L (Load) W (Write) H (Hexadecimal) I (Input) O (Output) Q (Quit) I am not going to cover all these commands, but what I will do is go through a few of them briefly. A is for Assemble Command (to write code) The A command translates assembly language statements into machine code. It is quite useful for writing small assembly programs. Below I have written a very basic assembly program. The code typed out is as follows mov ax,0015 mov cx,0023 sub cx,ax mov [120],al mov cl,[120]A nop R is for Register (to jump to a point in memory) The r command turns out to be one of the most frequent commands you will use in DEBUG. It allows you to view the contents of registers and to change their values. It can be used with the following combinations… R – Displays the contents of all the registers R f – Displays the flags register R register_name – Displays the contents of a specific register All three methods are illustrated in the image above T is for Trace (To execute a program step by step) The t command allows us to execute the program step by step. Before we can trace the program we need to point back to the beginning of the program. We do this by typing in r ip, which moves us back to memory point 100. We then type trace which executes the first line of code (line 100) (As shown in the image below starting from the red arrow). You can see from the above image that the register AX now contains 0015 as per our instruction mov ax,0015 You can also see that the IP points to line 0103 which has the MOV CX,0023 command If we type t again it will now execute the second line of the program which moves 23 in the cx register. Again, we can see that the line of code was executed and that the CX register now holds the value of 23. What I would like to highlight now is the section underlined in red. These are the status flags. The ones we are going to look at now are 1st (NV), 4th (PL), 5th (NZ) & 8th (NC) NV means no overflow, the alternate would be OV PL means that the sign of the previous arithmetic operation was Plus, the alternate would be NG (Negative) NZ means that the results of the previous arithmetic operation operation was Not Zero, the alternate would be ZR NC means that No final Carry resulted from the previous arithmetic operation. CY means that there was a final Carry. We could now follow this process of entering the t command until the entire program is executed line by line. G is for Go (To execute a program up to a certain line number) So we have looked at executing a program line by line, which is fine if your program is minuscule BUT totally unpractical if we have any decent sized program. A quicker way to run some lines of code is to use the G command. The ‘g’ command executes a program up to a certain specified point. It can be used in connection with the the reset IP command. You would set your initial point and then run the G command with the line you want to end on. P is for Proceed (Similar to trace but slightly more streamlined) Another command similar to trace is the proceed command. All that the p command does is if it is called and it encounters a CALL, INT or LOOP command it terminates the program execution. In the example below I modified our example program to include an int 20 at the end of it as illustrated in the image below… Then when executing the code when I encountered the int 20 command I typed the P command and the program terminated normally (illustrated below). D is for Dump (or for those more polite Display) So, we have all these assembly lines of code, but if you have ever opened up an exe or com file in a text/hex editor, it looks nothing like assembly code. The D command is a way that we can see what our code looks like in memory (or in a hex editor). If we examined the image above, we can see that Debug is storing our assembly code with each instruction following immediately after the previous one. For instance in memory address 110 we have int and 111 we have 20. If we examine the dump of memory we can see at memory point 110 CD is stored and at memory point 111 20 is stored. U is for Unassemble (or Convert Machine code to Assembly Code) So up to now we have gone through a bunch of commands, but probably one of the most useful is the U command. Let’s say we don’t understand machine code so well and so instead we want to see it in its equivalent assembly code. We can type the U command followed by the start memory point, followed by the end memory point and it will show us the assembly code equivalent of the machine code. E is for a bunch of things… The E command can be used for a bunch of things… One example is to enter data or machine code instructions directly into memory. It can also be used to display the contents of memory locations. I am not going to worry to much about it in this post. N / L / W is for Name, Load & Write So we have written out assembly code in debug, and now we want to save it to disk, or write it as a com file or load it. This is where the N, L & W command come in handy. The n command is used to give a name to the executable program file and is pretty simple to use. The w command is a bit trickier. It saves to disk all the memory between point bx and point cx so you need to specify the bx memory address and the cx memory address for it to write your code. Let’s look at an example illustrated below. You do this by calling the r command followed by the either bx or cx. We can then go to the directory where we were working and will see the new file with the name we specified. The L command is relatively simple. You would first specify the name of the file you would like to load using the N command, and then call the L command. Q is for Quit The last command that I am going to write about in this post is the Q command. Simply put, calling the Q command exits DEBUG. Commands we did not Cover Out of the standard DEBUG commands we covered A, T, G, D, U, E, P, R, N, L & W. The ones we did not cover were H, I & O – I might make mention of these in a later post, but for the basics they are not really needed. Some Useful Resources Please note this post is based on the COS2213 handouts for UNISA A Guide to DEBUG - http://mirror.href.com/thestarman/asm/debug/debug.htm#NT

Search Results

Search found 21301 results on 853 pages for 'duplicate values'.

Page 814/853 | < Previous Page | 810 811 812 813 814 815 816 817 818 819 820 821 | Next Page >

- by MikeD

- by user89305

- by anil.kasalanati

- by Abhijeet Patel

- by pinaldave

- by AndyL-Oracle

- by user47650

- by frank.nimphius

- by Bobby Diaz

- by user36825

- by hydroxide

- by andrewbrust

- by dmitry.nefedkin(at)oracle.com

- by Mark Virtue

- by shawn

- by nmarun

- by InfinitiesLoop

- by constant

- by Stephen.Walther

- by Rick Strahl

- by Wayne Molina

- by MarkPearl

< Previous Page | 810 811 812 813 814 815 816 817 818 819 820 821 | Next Page >