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• CodePlex Daily Summary for Tuesday, July 10, 2012

  CodePlex Daily Summary for Tuesday, July 10, 2012Popular ReleasesjListSelect - jQuery plug-in for a fully customizable select input: 1.0: This is the initial release. Documentation is available using the Documentation tab above and inside the JavaScript code.Push Framework: Push Framework 1.5: This version brings many bug fixes and enhancements to its predecessor.DbDiff: Database Diff and Database Scripting: 1.1.3.3: Sql 2005, Sql 2012 fixes Removed dbdiff recommended default exe because it was a wrong build.re-linq: 1.13.158: This is build 1.13.158 of re-linq. Find the complete release notes for the build here: Release NotesMishra Reader: Mishra Reader beta 3: Per-feed browsing Tons of bug fixes Note: This release requires .NET 4.5 RC. You'll be prompted to install it if you don't already have it. The RC will be upgradeable to the RTM once it's available.MVVM Light Toolkit: MVVM Light Toolkit V4 RTM: The issue with the installer is fixed, sorry for the problems folks This version supports Silverlight 3, Silverlight 4, Silverlight 5, WPF 3.5 SP1, WPF4, Windows Phone 7.0 and 7.5, WinRT (Windows 8). Support for Visual Studio 2010 and Visual Studio 2012 RC.BlackJumboDog: Ver5.6.7: 2012.07.08 Ver5.6.7 (1) ????????????????「?????　Request.Receve()」?????????? (2) Web???????????FlMML customized: FlMML customized ??: FlMML customized ????。 ??、ＰＣＭ??????????、??????。ecBlog: ecBlog 0.2: ecBlog alpha realaseTaskScheduler ASP.NET: Release 3 - 1.2.0.0: Release 3 - Version 1.2.0.0 That version was altered only the library: In TaskScheduler was added new properties: UseBackgroundThreads Enables the use of separate threads for each task. StoreThreadsInPool Manager enables to store in the Pool threads that are performing the tasks. OnStopSchedulerAutoCancelThreads Scheduler allows aborting threads when it is stopped. false if the scheduler is not aborted the threads that are running. AutoDeletedExecutedTasks Allows Manager Delete Task afte...DotNetNuke Persian Packages: ??? ?? ???? ????? ???? 6.2.0: *????? ???? ??? ?? ???? 6.2.0 ? ??????? ???? ????? ???? ??? ????? *????? ????? ????? ??? ??? ???? ??? ??????? ??????? - ???? *?????? ???? ??? ?????? ?? ???? ???? ????? ? ?? ??? ?? ???? ???? ?? *????? ????? ????? ????? ????? / ??????? ???? ?? ???? ??? ??? - ???? *???? ???? ???? ????? ? ??????? ??? ??? ??? ?? ???? *????? ????? ???????? ??? ? ??????? ?? ?? ?????? ????? ????????? ????? ?????? - ???? *????? ????? ?????? ????? ?? ???? ?? ?? ?? ???????? ????? ????? ????????? ????? ?????? *???? ?...Cypher Bot: Cypher Bot 4.1: Cypher Bot is the most advanced encryption tool on the planet.... and now it actually works. That's right we fixed the bugs! For a full program summary go to the Home Page or visit www.iRareMedia.com So what's new? We've pretty much fixed all the bugs, but here's a run down if you wanna know exactly what's different: Fixed Installation / Setup Error, where an error message would display: "No Internet Connection, Try Again Later" Fixed File Encryption / Decryption error where the file exten...Coding4Fun Kinect Service: Coding4Fun Kinect Service v1.5: Requires Kinect for Windows SDK v1.5 Minor bug fixes + Kinect for Windows SDK v1.5 Aligning version with the Kinect for Windows SDK requiredtedplay: tedplay 1.1: tedplay 1.1 source and Win32 binary is out now. Changes are: SID card support Commodore 64 PSID music format support optimized FIR filter global hotkeys for skipping tracks (Windows only) module properties window (Windows only) mutable noise channel via GUI button (Windows only) disable SID card from the menu (Windows only) bugfixes PSID tunes are played on the C64 clock frequency but in a Commodore plus/4 virtual machine. The purpose is not to have yet another SID player, but t...xUnit.net Contrib: xunitcontrib-resharper 0.6 (RS 7.0, 6.1.1): xunitcontrib release 0.6 (ReSharper runner) This release provides a test runner plugin for Resharper 7.0 (EAP build 82) and 6.1, targetting all versions of xUnit.net. (See the xUnit.net project to download xUnit.net itself.) Copies of the plugin that support previous verions of ReSharper can be downloaded from this release. The plan is to support the latest revisions of the last two paid-for major versions of ReSharper (namely 7.0 and 6.1) Also note that all builds work against ALL VERSIONS...Umbraco CMS: Umbraco 4.8.0 Beta: Whats newuComponents in the core Multi-Node Tree Picker, Multiple Textstring, Slider and XPath Lists Easier Lucene searching built in IFile providers for easier file handling Updated 3rd party libraries Applications / Trees moved out of the database SQL Azure support added Various bug fixes Getting Started A great place to start is with our Getting Started Guide: Getting Started Guide: http://umbraco.codeplex.com/Project/Download/FileDownload.aspx?DownloadId=197051 Make sure to...CODE Framework: 4.0.20704.0: See CODE Framework (.NET) Change Log for changes in this version.xUnit.net - Unit testing framework for C# and .NET (a successor to NUnit): xUnit.net 1.9.1: xUnit.net release 1.9.1Build #1600 Important note for Resharper users: Resharper support has been moved to the xUnit.net Contrib project. Important note for TestDriven.net users: If you are having issues running xUnit.net tests in TestDriven.net, especially on 64-bit Windows, we strongly recommend you upgrade to TD.NET version 3.0 or later. Important note for VS2012 users: The VS2012 runner is in the Visual Studio Gallery now, and should be installed via Tools | Extension Manager from insi...MVC Controls Toolkit: Mvc Controls Toolkit 2.2.0: Added Modified all Mv4 related features to conform with the Mvc4 RC Now all items controls accept any IEnumerable<T>(before just List<T> were accepted by most of controls) retrievalManager class that retrieves automatically data from a data source whenever it catchs events triggered by filtering, sorting, and paging controls move method to the updatesManager to move one child objects from a father to another. The move operation can be undone like the insert, update and delete operatio...IronPython: 2.7.3: On behalf of the IronPython team, I'm happy to announce the final release of IronPython 2.7.3. This release includes everything from IronPython 54498, 62475, and 74478 as well. Like all IronPython 2.7-series releases, .NET 4 is required to install it. Installing this release will replace any existing IronPython 2.7-series installation. The incompatibility with IronRuby has been resolved, and they can once again be installed side-by-side. The biggest improvements in IronPython 2.7.3 are: the...New ProjectsAuction Helper: Auction HelperBizTalk 0MQ Adapter: The BizTalk 0MQ Adapter allows BizTalk to send and receive messages using the ZeroMq cross platform messaging framework.fluentstatement: FluentStatement is a library for .NET usable to create Expressions Trees through its fluent interface. These ET can contain Lambda Expressions and Statements.Freemansoft: ??????????????????gppsoftware: gppsoftwarejAutoFitText - jQuery plug-in to auto-fit text similar to iOS applications: This is a jQuery plug-in that automatically fits text in a specific container using font size manipulation and/or string truncation. The end result is simjDelayedAction - jQuery plug-in to allow a delayed reaction to an event: This is a jQuery plug-in that allows the creation of an event (or multiple event) handler with a delay that can be extended or canceled before reacting.jInMemoryImageLoader - jQuery plug-in to asynchronously load an image: This is a jQuery plug-in that allows the asynchronous, in-memory loading of an image file with a callback for when it has succeeded or failed to load.jListSelect - jQuery plug-in for a fully customizable select input: A jQuery plug-in that allows you to create a fully customizable select input.jNumericalInput - jQuery plug-in to limit a text input to only numeric values: A simple jQuery plug-in that, when applied to an input of type text, only allows the input to have a numeric value (positive or negative).jVerticalAlignMiddle - jQuery plug-in to vertically align elements: A simple jQuery plug-in that vertically centers one element within its parent container.lhhp.net: this project is for testLiteCode: Your having enough of crackers, reverse engineers ? With LiteCode you can host your code remotely at a server where no cracker can touch itNetEx .net tool set: NetEx .net tool setOpenFlashChart: OpenFlashChart ??????Flash Chart??。 Project RPG: Developers learn how to design a game from the ground up.saka-pon.net: saka-pon.net.School System: Its all about school managementSeeForYourself: SeeForYourSelfSharepoint JQuery Editor Web Part: Enables quick JQuery development by executing your code immediately while in desing mode.Simplex: Simplex ???????????????J2EE???????????????。 Stuff.NET: This library provides several useful classes and methods to deal with frequently appearing challenges. e.g.: pathfinding, forms/controls, dynamic compiling, ...

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• CodePlex Daily Summary for Thursday, October 18, 2012

  CodePlex Daily Summary for Thursday, October 18, 2012Popular ReleasesGac Library -- C++ Utilities for GPU Accelerated GUI and Script: Gaclib 0.4.0.0: Gaclib.zip contains the following content GacUIDemo Demo solution and projects Public Source GacUI library Document HTML document. Please start at reference_gacui.html Content Necessary CSS/JPG files for document. Improvements to the previous release Added Windows 8 theme (except tab control, will be provided for the next release) GacUI will choose to use Windows 7 theme or Windows 8 theme as default theme according to OS version Added 1 new demos Template.Window.CustomizedBorder ...Yahoo! UI Library: YUI Compressor for .Net: Version 2.1.1.0 - Sartha (BugFix): - Revered back the embedding of the 2x assemblies.Visual Studio Team Foundation Server Branching and Merging Guide: v2.1 - Visual Studio 2012: Welcome to the Branching and Merging Guide What is new? The Version Control specific discussions have been moved from the Branching and Merging Guide to the new Advanced Version Control Guide. The Branching and Merging Guide and the Advanced Version Control Guide have been ported to the new document style. See http://blogs.msdn.com/b/willy-peter_schaub/archive/2012/10/17/alm-rangers-raising-the-quality-bar-for-documentation-part-2.aspx for more information. Quality-Bar Details Documentatio...D3 Loot Tracker: 1.5.5: Compatible with 1.05.Write Once, Play Everywhere: MonoGame 3.0 (BETA): This is a beta release of the up coming MonoGame 3.0. It contains an Installer which will install a binary release of MonoGame on windows boxes with the following platforms. Windows, Linux, Android and Windows 8. If you need to build for iOS or Mac you will need to get the source code at this time as the installers for those platforms are not available yet. The installer will also install a bunch of Project templates for Visual Studio 2010 , 2012 and MonoDevleop. For those of you wish...Windawesome: Windawesome v1.4.1 x64: Fixed switching of applications across monitors Changed window flashing API (fix your config files) Added NetworkMonitorWidget (thanks to weiwen) Any issues/recommendations/requests for future versions? This is the 64-bit version of the release. Be sure to use that if you are on a 64-bit Windows. Works with "Required DLLs v3".CODE Framework: 4.0.21017.0: See change log in the Documentation section for details.Global Stock Exchange (Hobby Project): Global Stock Exchange - Invst Banking (Hobby Proj): Initial VersionMagelia WebStore Open-source Ecommerce software: Magelia WebStore 2.1: Add support for .net 4.0 to Magelia.Webstore.Client and StarterSite version 2.1.254.3 Scheduler Import & Export feature (for Professional and Entreprise Editions) UTC datetime and timezone support .net 4.5 and Visual Studio 2012 migration client magelia global refactoring release of a nugget package to help developers speed up development http://nuget.org/packages/Magelia.Webstore.Client optimization of the data update mechanism (a.k.a. "burst") Performance improvment of the d...JayData - The cross-platform HTML5 data-management library for JavaScript: JayData 1.2.2: JayData is a unified data access library for JavaScript to CRUD + Query data from different sources like OData, MongoDB, WebSQL, SqLite, HTML5 localStorage, Facebook or YQL. The library can be integrated with Knockout.js or Sencha Touch 2 and can be used on Node.js as well. See it in action in this 6 minutes video Sencha Touch 2 example app using JayData: Netflix browser. What's new in JayData 1.2.2 For detailed release notes check the release notes. Revitalized IndexedDB providerNow you c...JaySvcUtil - generate JavaScript context from OData metadata: JaySvcUtil 1.2.2: You will need the JayData library to use contexts generated with JaySvcUtil! Get it from here: http://jaydata.codeplex.comVFPX: FoxcodePlus: FoxcodePlus - Visual Studio like extensions to Visual FoxPro IntelliSense.Droid Explorer: Droid Explorer 0.8.8.8 Beta: fixed the icon for packages on the desktop fixed the install dialog closing right when it starts removed the link to "set up the sdk for me" as this is no longer supported. fixed bug where the device selection dialog would show, even if there was only one device connected. fixed toolbar from having "gap" between other toolbar removed main menu items that do not have any menus Fiskalizacija za developere: FiskalizacijaDev 1.0: Prva verzija ovog projekta, još je uvijek oznacena kao BETA - ovo znaci da su naša testiranja prošla uspješno :) No, kako mi ne proizvodimo neki software za blagajne, tako sve ovo nije niti isprobano u "realnim" uvjetima - svaka je sugestija, primjedba ili prijava bug-a je dobrodošla. Za sve ovo koristite, molimo, Discussions ili Issue Tracker. U ovom trenutku runtime binary je raspoloživ kao Any CPU za .NET verzije 2.0. Javite ukoliko trebaju i verzije buildane za 32-bit/64-bit kao i za .N...Squiggle - A free open source LAN Messenger: Squiggle 3.2 (Development): NOTE: This is development release and not recommended for production use. This release is mainly for enabling extensibility and interoperability with other platforms. Support for plugins Support for extensions Communication layer and protocol is platform independent (ZeroMQ, ProtocolBuffers) Bug fixes New /invite command Edit the sent message Disable update check NOTE: This is development release and not recommended for production use.AcDown????? - AcDown Downloader Framework: AcDown????? v4.2: ??●AcDown??????????、??、??、???????。????，????，?????????????????????????。???????????Acfun、????(Bilibili)、??、??、YouTube、??、???、??????、SF????、????????????。 ●??????AcPlay?????，??????、????????????????。 ● AcDown??????????????????，????????????????????????????。 ● AcDown???????C#??，????.NET Framework 2.0??。?????"Acfun?????"。 ????32??64? Windows XP/Vista/7/8 ???? 32??64? ???Linux ????(1)????????Windows XP???，????????.NET Framework 2.0???(x86)，?????"?????????"??? (2)???????????Linux???，????????Mono?? ??2...PHPExcel: PHPExcel 1.7.8: See Change Log for details of the new features and bugfixes included in this release, and methods that are now deprecated. Note changes to the PDF Writer: tcPDF is no longer bundled with PHPExcel, but should be installed separately if you wish to use that 3rd-Party library with PHPExcel. Alternatively, you can choose to use mPDF or DomPDF as PDF Rendering libraries instead: PHPExcel now provides a configurable wrapper allowing you a choice of PDF renderer. See the documentation, or the PDF s...DirectX Tool Kit: October 12, 2012: October 12, 2012 Added PrimitiveBatch for drawing user primitives Debug object names for all D3D resources (for PIX and debug layer leak reporting)Microsoft Ajax Minifier: Microsoft Ajax Minifier 4.70: Fixed issue described in discussion #399087: variable references within case values weren't getting resolved.GoogleMap Control: GoogleMap Control 6.1: Some important bug fixes and couple of new features were added. There are no major changes to the sample website. Source code could be downloaded from the Source Code section selecting branch release-6.1. Thus just builds of GoogleMap Control are issued here in this release. Update 14.Oct.2012 - Client side access fixed NuGet Package GoogleMap Control 6.1 NuGet Package FeaturesBounds property to provide ability to create a map by center and bounds as well; Setting in markup <artem:Goog...New ProjectsAnonymous InfoPath Browser Forms Web Part: Web part for SharePoint 2007 and 2010 that enables the anonymous submission of InfoPath forms.ath sem5 gr3 proj1: just a simple app to learn how to work in groups, just a start in our programming careerAtif M DNNTaskManager: This is a simple task manager AWS for .NET Sample (Amazon EC2, S3, SQS, DynamoDB): Amazon Web Services (AWS) Sample for .NET (C#) with Asp.NET MVC and Web API. Including S3, DynamoDB, Elastic Beanstalk and SQSCodingWheels.DataTypes: DataTypes tries to make it easier for developers to have concrete typesafe objects for working with many common forms of data. Many times these data objects are just doubles or ints floating through your code with abbreviations on them describing what they represent.Display attachments (list view) SP 2010: Display attachments (SP 2010) is a field for all type lists without types: Document library, Image library, Links, Surveys.Donation Tracker: This is a school projectEveHQ : The Internet Spaceship Toolkit: Multi-faceted character application for Eve-Online. Includes pilot monitoring, skill queue planning, ship fitting, industry and more.EventConni: EventConniFileCloud.Net: FileCloud.NET is a .Net wrapper for http://filecloud.io/ service API.Foodies: FoodiesForce PowerPivot Refresh: This project contains an c# utility class (CustomDataRefreshUtils) to refresh a PowerPivot file in SharePoint 2010. Geometric Modeling: REnder a mesh with Visual Studio - C#Heavysoft Mince: Heavysoft Mince is an opportunity to enhance my skills and to show how free software can be used in enterprise-level systems.HP iLO Management Utility: A small utility to provide a nice interface for managing multiple servers over the iLO interface.iMeeting: iMeeting is a simple application built in Java. iTask: iTask for Windows 8 LamWebOS: this is test project.MackProjects_Musicallis: Projeto da disciplina de Técnicas de Programação Aplicada II da Universidade Presbiteriana Mackenzie - SP.Merge PDF: MergePDF is an easy and simple tool which could help you batch merge PDF files (any number you want) into one PDF file quickly. It is completely free. With MerNetGen: O NetGen é um projeto de geração automatizada de interface Web em ASP.NET a partir de modelo de classes do LINQ-TO-SQL, estando disponível como um Addin para o Visual Studio 2008.Other Ways: ?? ! ????!!!!!Physical Therapy Timer: A simple Windows application that makes it easy to set a countdown timer for a required time period, and keep track of how many times the timer has be run.PicoMax: This version of PicoMax has everything you need to use the Seeed OLED without the MS Graphics class. It can be used in Gadgeteer or a regular NETMF project.post tracker: ASP, WEB API, WINDOWS PhoneRandomEngine: Open Source Game Engine.Resident Raver: This is Windows 8 version of Resident Raver which I wrote for my Intro To HTML5 Game Dev book. It requires the Impact JavaScript game framework.RogueTS: RogueTS is a Roguelike engine written in TypeScript. It features randomly generated maps, basic lighting effects, collision detection and additional stub code.RonYeeStores: ????????????，??C2C?B2C???????????。ShangHaiTunnel monitor: shang hai tunnel projectSharePoint List Security: Free, open source set of features for SharePoint 2010 to enhance the OOTB list permissions by adding column level permissions for users and groups.Skywave Code Lines Counter: It is a tiny program which will count real written lines of code. Real lines means that we removed autogenerated lines, empty lines and single '{' or '}' lines (in C#) and ... Currently supports .cs and .vb files (for C# and VB) It will say how much you worked ;-)switchcontroles: HAT Switch controle sy seguimientoSyscore: Steps : 1 - Definitions 2 - Requirements 3 - Projecting 4 - Delegation 5 - Prototyping 6 - Testing/Analizing 7 - Finalizing 8 - Distribution 9 - Congratulationstarikscodeplexproject: tarikscodeplexprojectTaskManager04: This project is an effort to implement the coding examples given in the TASK MANAGER video series into a working DotNetNuke program.testc: this is a test ,heihei,yongshengtesttom10172012git01: fds fs fs fs tsUnit - TypeScript Unit Testing Framework: tsUnit is a unit testing framework for TypeScript, written in TypeScript. It allows you to encapsulate your test functions in classes and modules.WebGrease: WebGrease is a suite of tools for optimizing javascript, css files and images.????: ??《?????》、《??》、《???》、《??》???。。。

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• 12c - flashforward, flashback or see it as of now...

  - by noreply(at)blogger.com (Thomas Kyte)

  Oracle 9i exposed flashback query to developers for the first time.  The ability to flashback query dates back to version 4 however (it just wasn't exposed).  Every time you run a query in Oracle it is in fact a flashback query - it is what multi-versioning is all about.However, there was never a flashforward query (well, ok, the workspace manager has this capability - but with lots of extra baggage).  We've never been able to ask a table "what will you look like tomorrow" - but now we do.The capability is called Temporal Validity.  If you have a table with data that is effective dated - has a "start date" and "end date" column in it - we can now query it using flashback query like syntax.  The twist is - the date we "flashback" to can be in the future.  It works by rewriting the query to transparently the necessary where clause and filter out the right rows for the right period of time - and since you can have records whose start date is in the future - you can query a table and see what it would look like at some future time.Here is a quick example, we'll start with a table:ops$tkyte%ORA12CR1> create table addresses  2  ( empno       number,  3    addr_data   varchar2(30),  4    start_date  date,  5    end_date    date,  6    period for valid(start_date,end_date)  7  )  8  /Table created.the new bit is on line 6 (it can be altered into an existing table - so any table  you have with a start/end date column will be a candidate).  The keyword is PERIOD, valid is an identifier I chose - it could have been foobar, valid just sounds nice in the query later.  You identify the columns in your table - or we can create them for you if they don't exist.  Then you just create some data:ops$tkyte%ORA12CR1> insert into addresses (empno, addr_data, start_date, end_date )  2  values ( 1234, '123 Main Street', trunc(sysdate-5), trunc(sysdate-2) );1 row created.ops$tkyte%ORA12CR1>ops$tkyte%ORA12CR1> insert into addresses (empno, addr_data, start_date, end_date )  2  values ( 1234, '456 Fleet Street', trunc(sysdate-1), trunc(sysdate+1) );1 row created.ops$tkyte%ORA12CR1>ops$tkyte%ORA12CR1> insert into addresses (empno, addr_data, start_date, end_date )  2  values ( 1234, '789 1st Ave', trunc(sysdate+2), null );1 row created.and you can either see all of the data:ops$tkyte%ORA12CR1> select * from addresses;     EMPNO ADDR_DATA                      START_DAT END_DATE---------- ------------------------------ --------- ---------      1234 123 Main Street                27-JUN-13 30-JUN-13      1234 456 Fleet Street               01-JUL-13 03-JUL-13      1234 789 1st Ave                    04-JUL-13or query "as of" some point in time - as  you can see in the predicate section - it is just doing a query rewrite to automate the "where" filters:ops$tkyte%ORA12CR1> select * from addresses as of period for valid sysdate-3;     EMPNO ADDR_DATA                      START_DAT END_DATE---------- ------------------------------ --------- ---------      1234 123 Main Street                27-JUN-13 30-JUN-13ops$tkyte%ORA12CR1> @planops$tkyte%ORA12CR1> select * from table(dbms_xplan.display_cursor);PLAN_TABLE_OUTPUT-------------------------------------------------------------------------------SQL_ID  cthtvvm0dxvva, child number 0-------------------------------------select * from addresses as of period for valid sysdate-3Plan hash value: 3184888728-------------------------------------------------------------------------------| Id  | Operation         | Name      | Rows  | Bytes | Cost (%CPU)| Time     |-------------------------------------------------------------------------------|   0 | SELECT STATEMENT  |           |       |       |     3 (100)|          ||*  1 |  TABLE ACCESS FULL| ADDRESSES |     1 |    48 |     3   (0)| 00:00:01 |-------------------------------------------------------------------------------Predicate Information (identified by operation id):---------------------------------------------------   1 - filter((("T"."START_DATE" IS NULL OR              "T"."START_DATE"<=SYSDATE@!-3) AND ("T"."END_DATE" IS NULL OR              "T"."END_DATE">SYSDATE@!-3)))Note-----   - dynamic statistics used: dynamic sampling (level=2)24 rows selected.ops$tkyte%ORA12CR1> select * from addresses as of period for valid sysdate;     EMPNO ADDR_DATA                      START_DAT END_DATE---------- ------------------------------ --------- ---------      1234 456 Fleet Street               01-JUL-13 03-JUL-13ops$tkyte%ORA12CR1> @planops$tkyte%ORA12CR1> select * from table(dbms_xplan.display_cursor);PLAN_TABLE_OUTPUT-------------------------------------------------------------------------------SQL_ID  26ubyhw9hgk7z, child number 0-------------------------------------select * from addresses as of period for valid sysdatePlan hash value: 3184888728-------------------------------------------------------------------------------| Id  | Operation         | Name      | Rows  | Bytes | Cost (%CPU)| Time     |-------------------------------------------------------------------------------|   0 | SELECT STATEMENT  |           |       |       |     3 (100)|          ||*  1 |  TABLE ACCESS FULL| ADDRESSES |     1 |    48 |     3   (0)| 00:00:01 |-------------------------------------------------------------------------------Predicate Information (identified by operation id):---------------------------------------------------   1 - filter((("T"."START_DATE" IS NULL OR              "T"."START_DATE"<=SYSDATE@!) AND ("T"."END_DATE" IS NULL OR              "T"."END_DATE">SYSDATE@!)))Note-----   - dynamic statistics used: dynamic sampling (level=2)24 rows selected.ops$tkyte%ORA12CR1> select * from addresses as of period for valid sysdate+3;     EMPNO ADDR_DATA                      START_DAT END_DATE---------- ------------------------------ --------- ---------      1234 789 1st Ave                    04-JUL-13ops$tkyte%ORA12CR1> @planops$tkyte%ORA12CR1> select * from table(dbms_xplan.display_cursor);PLAN_TABLE_OUTPUT-------------------------------------------------------------------------------SQL_ID  36bq7shnhc888, child number 0-------------------------------------select * from addresses as of period for valid sysdate+3Plan hash value: 3184888728-------------------------------------------------------------------------------| Id  | Operation         | Name      | Rows  | Bytes | Cost (%CPU)| Time     |-------------------------------------------------------------------------------|   0 | SELECT STATEMENT  |           |       |       |     3 (100)|          ||*  1 |  TABLE ACCESS FULL| ADDRESSES |     1 |    48 |     3   (0)| 00:00:01 |-------------------------------------------------------------------------------Predicate Information (identified by operation id):---------------------------------------------------   1 - filter((("T"."START_DATE" IS NULL OR              "T"."START_DATE"<=SYSDATE@!+3) AND ("T"."END_DATE" IS NULL OR              "T"."END_DATE">SYSDATE@!+3)))Note-----   - dynamic statistics used: dynamic sampling (level=2)24 rows selected.All in all a nice, easy way to query effective dated information as of a point in time without a complex where clause.  You need to maintain the data - it isn't that a delete will turn into an update the end dates a record or anything - but if you have tables with start/end dates, this will make it much easier to query them.

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• Java Generics, JPA 2, J2EE, JSF 2, GWT, Ajax, Oracle's Java Strategies, Flex, iPhone, Agile ALM, Gra

  - by Kim Won

  Great Indian Developer Summit 2010 – India's Biggest Polyglot Conference and Workshops for IT Software Professionals Bangalore, April 9, 2010: The GIDS.Java Conference and Workshops has announced the complete program of over 50 sessions on the present and future of the Java language and VM, how they are evolving to meet the community's ever-changing needs, and some of the cutting-edge tools, technologies & techniques used for building robust enterprise Java applications today. The GIDs.Java track at Great Indian Developer Summit takes place 22 and 23 April 2010, at the Indian Institute of Science in Bangalore. As one of the longest running independent developer conferences in India, GIDS.Java at the Great Indian Developer Summit 2010 is uniquely positioned to provide a blend of practical, pragmatic and immediately applicable knowledge and a glimpse of the future of technology. During 22 and 23 April 2010, GIDS.Java offers a multi-track conference, workshops, expo show floor, and networking opportunities. The first keynote at GIDS.Java "Pointy Haired Bosses and Pragmatic Programmers" is led by Dr. Venkat Subramaniam. He speaks about how each of us has a professional responsibility to be objective and make decisions that will help us and our teams be productive and deliver results. Venkat will pick on some fallacies, lay down facts, and discuss how to stay professional and objective in our daily efforts. The second keynote of the day explains the practical features that make the Cloud so interesting, and why everyone should start using it in their everyday life. Simone Brunozzi, Amazon Web Services Technology Evangelist, will detail technical examples, business details all mixed with a lot of Italian humor to ensure audience enjoy this talk without a single line of code. The third keynote of the day gives an exciting overview of directions in the Java space for Oracle, featuring concrete signs of Oracles heavy investment, a clear concise strategy overview, and deep dives into some of the most interesting pieces of technology being developed in the Java Platform Group today; such as JavaEE, JDK7, JavaFX, and our exciting new visual tools. Featuring demos by a Java evangelism team star, Simon Ritter, this talk takes you top to bottom in Java Technology. Featured talks at GID.Web include: Good, Bad, and Ugly of Java Generics, Venkat Subramaniam Pure Java Ajax: An Overview of GWT 2.0, Marty Hall How JPA 2.0 Makes a Good Thing Even Better, Mike Keith Building Enterprise RIAs with Adobe Flex and Java, Sujit Reddy G Integrated Ajax Support in JSF 2.0, Marty Hall Design Patterns in Java and Groovy, Venkat Subramaniam A Gentle Introduction to iPhone and Obj-C for Java Developers, Matthew McCullough Cloud Computing: Azure for Java Developers, Janakiram MSV Ajax Support in the Prototype JavaScript Library, Marty Hall First steps to IT Heaven Through the Cloud. Part III: .Java, Simone Brunozi Building Web 2.0 User Interfaces for Web Service Models using JSF, Frank Nimphius and Jobinesh P Acceptance Test Driven Development, John Tobin and Mohammed Mohsinali Architecting Your Java Applications for the Cloud, Praveen Srivatsa Effective Java, Venkat Subramaniam The Amazing Groovy Weight-loss Plan, Scott Davis Enterprise Modeling - from Conceptual Planning to Technical Blueprints, J Sripad Java Collections Renaissance, Donald Raab and Vlad Zakharov Power 7 and IBM J9VM, Himanshu Goyal A Whistle-stop Tour of Maven 3.0, Matthew McCullough Mass Volume Opportunities for Java Developers, Jouko Nuottila Emerging Technology Complex Event Processing, Duvvuri Srinivas Agile ALM for Distributed Development, Karthi Swaminathan Dim Sum Grails - A Sampler of Practical Non Database-Driven Grails Applications, Scott Davis Diagnosing Performance Bottlenecks in J2EE, Deepak Kaul Business Driven Identity Management, Suneet Agera Combining Java EE with OSGi using Eclipse Gemini, Mike Keith Workshop: Essence of Functional Programming, Venkat Subramaniam Workshop: Agile Development, Tools, and Teams and Scrum Certification, Stephen Forte Workshop: Cloud Computing Boot Camp on the Google App Engine, Matthew McCullough Workshop: Building Your First Amazon App, Simone Brunozzi Workshop: The 180-min AJAX and JSON Spike Class, Scott Davis Workshop: PHP + Adobe Flex = Killer RIA, Shyamprasad P Workshop: User Expereince Evaluation Model Walkthrough, Sanna Häiväläinen Workshop: Building Data Centric Applications using Adobe Flex and Java, Prashant Singh Workshop: Monetizing your Apps with PayPal X Payments Platform, Khurram Khan, Praveen Alavilli Sponsors of Great Indian Developer Summit 2010 include: Platinum sponsors Microsoft, Oracle Forum Nokia and Adobe; Gold sponsors Intel and SAP; Silver sponsors Quest Software, PayPal, Telerik and AMT. About Great Indian Developer Summit Great Indian Developer Summit is the gold standard for India's software developer ecosystem for gaining exposure to and evaluating new projects, tools, services, platforms, languages, software and standards. Packed with premium knowledge, action plans and advise from been-there-done-it veterans, creators, and visionaries, the 2010 edition of Great Indian Developer Summit features focused sessions, case studies, workshops and power panels that will transform you into a force to reckon with. Featuring 3 co-located conferences: GIDS.NET, GIDS.Web, GIDS.Java and an exclusive day of in-depth tutorials - GIDS.Workshops, from 20 April to 24 April at the IISc campus in Bangalore. At GIDS you'll participate in hundreds of sessions encompassing the full range of Microsoft computing, Java, Agile, RIA, Rich Web, open source/standards, languages, frameworks and platforms, practical tutorials that deep dive into technical skill and best practices, inspirational keynote presentations, an Expo Hall featuring dozens of the latest projects and products activities, engaging networking events, and the interact with the best and brightest of speakers from around the world. For further information on GIDS 2010, please visit the summit on the web http://www.developersummit.com/ A Saltmarch Media Press Release E: [email protected] Ph: +91 80 4005 1000

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• Uploadify Not Working

  - by azz0r

  Hello, I'll re-edit this to tackle the uploadify issue. Its very strange, essentially the script isn't uploading and isn't triggering onAllComplete. Also if I try to upload an image that's to large, and click Upload files, it skips from 0 to 100%. But does not trigger onAllComplete. It does not upload either. Whats strange, is I have an earlier revision of this and the codes no different and it works, ive tried switched back to the same jquery/uploadify/layout and it still doesnt work. However due to the nature of uploadify not being very forthcoming about errors or whats going on, I can't figure out where its going wrong! Controller: public function manageImagesAction() { $id = $this->_getParam('id'); $object = Eurocreme_Gallery::load_by_fields(array('id' => $id), 1); $images = Eurocreme_Image::load_by_type(array('type' => 'gallery_id', 'values' => $id, 'from' => 0, 'to' => COUNT_HIGH, 'order' => 'gi.position ASC')); $this->view->object = $object; $this->view->images = $images; $this->view->headScript()->appendFile('/library/jquery/uploadify/swfobject.js'); $this->view->headScript()->appendFile('/library/jquery/uploadify/jquery.uploadify.v2.1.0.js'); $this->view->headScript()->appendFile('/library/jquery/ui.js'); } View: <div class="content-area"> <h1>Adding Images To "<?php echo $this->object->name; ?>" Gallery</h1> <p><input id="fileInput2" name="fileInput2" type="file" /></p> <p><a href="javascript:$('#fileInput2').uploadifyUpload();">Upload Files</a> | <a href="javascript:$('#fileInput2').uploadifyClearQueue();">Clear Queue</a></p> </div> <?php if (!empty($this->images)) { ?> <div class="content-area"> <h1>Order Images For <?php echo $this->object->name; ?></h1> <p id="status_update">Drop And Drag Images to re-order them, I will automatically save it for you!</p> <ul id="sort_list"> <?php foreach ($this->images as $image) { ?> <li class="removable" id="recordsArray_<?php echo $image->id; ?>"><img src="/images/Image/thumb/<?php echo $image->image_url; ?>" alt="<?php echo $image->name_url; ?>" title="<?php echo $image->name; ?>" /><p><a class="removable" id="<?php echo $image->id; ?>">Delete</a></p></li> <?php } ?> </ul> <p class="clear"></p> </div> <?php } ?> <?php $this->headScript()->captureStart(); ?> $('document').ready(function() { $("#fileInput2").uploadify({ 'uploader' : '/library/jquery/uploadify/uploadify.swf', 'script' : '/<?php echo $this->object->name_url; ?>/upload.php', 'cancelImg' : '/library/jquery/uploadify/cancel.png', 'folder' : '/images/Image/', 'multi' : true, 'onAllComplete' : function(e, queueId, file, response, data) { window.location.reload(); }, }) //sortable $(function() { $("#sort_list").sortable({ opacity: 0.6, cursor: 'move', update: function() { $("#status_update").html('Processing'); var order = $(this).sortable("serialize"); $.post("/administration/gallery/save-image-order/id/<?php echo $this->object->id; ?>", order, function(theResponse){ $("#status_update").html(theResponse); }); } }); //delete $('a.removable').click(function(){ var id = this.id; $.post("/administration/gallery/delete-image/gallery_id/<?php echo $this->object->id; ?>/image_id/"+id+"", '', function(theResponse) { $("#recordsArray_"+id+"").remove(); }); }); }); }); <?php $this->headScript()->captureEnd(); ?>

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• What does a Software Developer actually do?

  - by chobo2

  Hi I am graduating from my Computer Science degree in a few weeks from now!! I started to look for my first job. For the last couple years I gotten really into web programming(Asp.net). My first choice would be to get a junior asp.net MVC developer but I don't any companies in my area use MVC yet or if they do they are not hiring. So my second choice would be a junior asp.net Webforms developer. My other choices after that would be forms applications, mobile applications using .Net and C#. As you can see I am looking for something with .Net. I spent the last couple years doing .Net projects for school, on my free time and love the Language and it would pain me right now to switch to something like php. So now I found a posting in my area for an Entry Software Developer. I like the fact that they are using .net and that it is entry job(I never worked in this industry and never had more then like a tutoring job so I want to for like intermediate jobs). Posting Are you looking for an exciting challenge within a dynamic, people-oriented culture where you can launch your technical career? Company Name Inc. is a technology consulting company, located in Canada, that designs, develops, and delivers real-time interactive applications accessed via the Internet as well as back-end tools to support these applications. Company Name provides a combination of out-of-the-box and customized solutions to an expanding list of partners and customers. POSITION SUMMARY As a member of our team, the successful candidate will be responsible for helping us increase the quality and stability of our software systems by working jointly and directly with both the Software Development teams and the QA Team. The primary mission of this role will be to substantially enhance our test automation suite. The incumbent will design and program automated tests (unit, integration, system, stress and load) in Visual Studio using C# and will develop sound processes that help us identify and resolve defects as early as possible. The successful incumbent will help us improve and enhance system functionality, reliability, performance and scalability. This role is specifically designed for an eager, bright, new graduate who is looking for a stepping stone into a software engineering role. We promote from within and invite new graduates to apply for this important position - which may lead to new opportunities. We also offer a generous professional development plan to help you on your way. You will be a key part of a team of experts that is responsible for improving the quality of our software by: • Designing, writing, and executing test plans and programmatic tests in Visual Studio using C# and NUnit for functional testing of our code, new features, regression, and performance test procedures. • Working with the engineers to design and build the stress and load testing framework which emulates tens and even hundreds of thousands of concurrent users via a distributed network interfacing with our Load Testing Lab. • Interfacing with both the Development Team and the QA Team to ensure risks are identified and managed. • Mentoring and leading the QA Team in programmatic test automation technologies and tools. MUST HAVE SKILLS / QUALIFICATIONS: • Diploma or higher Degree in Computer Science, or equivalent formal training. • Fundamental C# programming skills. • Knowledge of Internet technologies and Microsoft Windows platforms. • Knowledge of PC hardware. • Excellent communication skills (both oral and written). • Self-starter who takes initiative, requires minimal supervision, can handle multiple simultaneous tasks. • Detail-oriented, able to concentrate, and work quickly. • Proven diagnostic, analytical, and problem solving skills. NICE TO HAVE SKILLS: • Exposure to Visual Studio Team System or Visual Studio Test Edition. • Exposure in C# using NUnit. • Exposure to NUnit, HTTPUnit, and other automation tool suites. • Exposure to Performance/Stress/Load Testing. • Good understanding of relational databases (MS SQL Server). • Familiar with video and online multi-player games. As part of our team you will have the opportunity to work with a supportive team of experts, drive your own success, and ride the wave as we continually expand our team of experts. If you are interested in this opportunity, please send your resume to [email protected] with “Entry Level Software Developer” in the subject line. So that is the posting. To me it sounds like it is QA job. I don't have anything against QA jobs but alot of them seems to be your just clicking buttons and running scripts. Is this what a typical software developer does? Like I am so on the fence to apply for this job. On one side I am not sure how much programming I would be doing. Like I want to be at least half the time programming otherwise my skills will never improve since I will never be programming in teams and stuff. At the same time I have no experience in the industry so on the other side I am thinking just go for it and then maybe a year later try to get a full programming job(provided that I got the job). Yet if I am not programming in that job then that experience will not help me for the next job I find as I will be back a square one.

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• Uploadify Minimum Image Width And Height

  - by Richard Knop

  So I am using the Uplodify plugin to allow users to upload multiple images at once. The problem is I need to set a minimum width and height for images. Let's say 150x150px is the smallest image users can upload. How can I set this limitation in the Uploadify plugin? When user tries to upload smaller picture, I would like to display some error message as well. Here is the PHP file that is called bu the plugin to upload images: <?php define('BASE_PATH', substr(dirname(dirname(__FILE__)), 0, -22)); // set the include path set_include_path(BASE_PATH . '/../library' . PATH_SEPARATOR . BASE_PATH . '/library' . PATH_SEPARATOR . get_include_path()); // autoload classes from the library function __autoload($class) { include str_replace('_', '/', $class) . '.php'; } $configuration = new Zend_Config_Ini(BASE_PATH . '/application' . '/configs/application.ini', 'development'); $dbAdapter = Zend_Db::factory($configuration->database); Zend_Db_Table_Abstract::setDefaultAdapter($dbAdapter); function _getTable($table) { include BASE_PATH . '/application/modules/default/models/' . $table . '.php'; return new $table(); } $albums = _getTable('Albums'); $media = _getTable('Media'); if (false === empty($_FILES)) { $tempFile = $_FILES['Filedata']['tmp_name']; $extension = end(explode('.', $_FILES['Filedata']['name'])); // insert temporary row into the database $data = array(); $data['type'] = 'photo'; $data['type2'] = 'public'; $data['status'] = 'temporary'; $data['user_id'] = $_REQUEST['user_id']; $paths = $media->add($data, $extension, $dbAdapter); // save the photo move_uploaded_file($tempFile, BASE_PATH . '/public/' . $paths[0]); // create a thumbnail include BASE_PATH . '/library/My/PHPThumbnailer/ThumbLib.inc.php'; $thumb = PhpThumbFactory::create(BASE_PATH . '/public/' . $paths[0]); $thumb->adaptiveResize(85, 85); $thumb->save(BASE_PATH . '/public/' . $paths[1]); // add watermark to the bottom right corner $pathToFullImage = BASE_PATH . '/public/' . $paths[0]; $size = getimagesize($pathToFullImage); switch ($extension) { case 'gif': $im = imagecreatefromgif($pathToFullImage); break; case 'jpg': $im = imagecreatefromjpeg($pathToFullImage); break; case 'png': $im = imagecreatefrompng($pathToFullImage); break; } if (false !== $im) { $white = imagecolorallocate($im, 255, 255, 255); $font = BASE_PATH . '/public/fonts/arial.ttf'; imagefttext($im, 13, // font size 0, // angle $size[0] - 132, // x axis (top left is [0, 0]) $size[1] - 13, // y axis $white, $font, 'HunnyHive.com'); switch ($extension) { case 'gif': imagegif($im, $pathToFullImage); break; case 'jpg': imagejpeg($im, $pathToFullImage, 100); break; case 'png': imagepng($im, $pathToFullImage, 0); break; } imagedestroy($im); } echo "1"; } And here's the javascript: $(document).ready(function() { $('#photo').uploadify({ 'uploader' : '/flash-uploader/scripts/uploadify.swf', 'script' : '/flash-uploader/scripts/upload-public-photo.php', 'cancelImg' : '/flash-uploader/cancel.png', 'scriptData' : {'user_id' : 'USER_ID'}, 'queueID' : 'fileQueue', 'auto' : true, 'multi' : true, 'sizeLimit' : 2097152, 'fileExt' : '*.jpg;*.jpeg;*.gif;*.png', 'wmode' : 'transparent', 'onComplete' : function() { $.get('/my-account/temporary-public-photos', function(data) { $('#temporaryPhotos').html(data); }); } }); $('#upload_public_photo').hover(function() { var titles = '{'; $('.title').each(function() { var title = $(this).val(); if ('Title...' != title) { var id = $(this).attr('name'); id = id.substr(5); title = jQuery.trim(title); if (titles.length > 1) { titles += ','; } titles += '"' + id + '"' + ':"' + title + '"'; } }); titles += '}'; $('#titles').val(titles); }); }); Now bear in mind that I know how to check images dimensions in the PHP file. But I'm not sure how to modify the javascript so it won't upload images with very small dimensions.

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• C++ Mutexes and STL Lists Across Subclasses

  - by Genesis

  I am currently writing a multi-threaded C++ server using Poco and am now at the point where I need to be keeping information on which users are connected, how many connections each of them have, and given it is a proxy server, where each of those connections are proxying through to. For this purpose I have created a ServerStats class which holds an STL list of ServerUser objects. The ServerStats class includes functions which can add and remove objects from the list as well as find a user in the list an return a pointer to them so I can access member functions within any given ServerUser object in the list. The ServerUser class contains an STL list of ServerConnection objects and much like the ServerStats class it contains functions to add, remove and find elements within this list. Now all of the above is working but I am now trying to make it threadsafe. I have defined a Poco::FastMutex within the ServerStats class and can lock/unlock this in the appropriate places so that STL containers are not modified at the same time as being searched for example. I am however having an issue setting up mutexes within the ServerUser class and am getting the following compiler error: /root/poco/Foundation/include/Poco/Mutex.h: In copy constructor âServerUser::ServerUser(const ServerUser&)â: src/SocksServer.cpp:185: instantiated from âvoid __gnu_cxx::new_allocator<_Tp::construct(_Tp*, const _Tp&) [with _Tp = ServerUser]â /usr/include/c++/4.4/bits/stl_list.h:464: instantiated from âstd::_List_node<_Tp* std::list<_Tp, _Alloc::_M_create_node(const _Tp&) [with _Tp = ServerUser, _Alloc = std::allocator]â /usr/include/c++/4.4/bits/stl_list.h:1407: instantiated from âvoid std::list<_Tp, _Alloc::_M_insert(std::_List_iterator<_Tp, const _Tp&) [with _Tp = ServerUser, _Alloc = std::allocator]â /usr/include/c++/4.4/bits/stl_list.h:920: instantiated from âvoid std::list<_Tp, _Alloc::push_back(const _Tp&) [with _Tp = ServerUser, _Alloc = std::allocator]â src/SocksServer.cpp:301: instantiated from here /root/poco/Foundation/include/Poco/Mutex.h:164: error: âPoco::FastMutex::FastMutex(const Poco::FastMutex&)â is private src/SocksServer.cpp:185: error: within this context In file included from /usr/include/c++/4.4/x86_64-linux-gnu/bits/c++allocator.h:34, from /usr/include/c++/4.4/bits/allocator.h:48, from /usr/include/c++/4.4/string:43, from /root/poco/Foundation/include/Poco/Bugcheck.h:44, from /root/poco/Foundation/include/Poco/Foundation.h:147, from /root/poco/Net/include/Poco/Net/Net.h:45, from /root/poco/Net/include/Poco/Net/TCPServerParams.h:43, from src/SocksServer.cpp:1: /usr/include/c++/4.4/ext/new_allocator.h: In member function âvoid __gnu_cxx::new_allocator<_Tp::construct(_Tp*, const _Tp&) [with _Tp = ServerUser]â: /usr/include/c++/4.4/ext/new_allocator.h:105: note: synthesized method âServerUser::ServerUser(const ServerUser&)â first required here src/SocksServer.cpp: At global scope: src/SocksServer.cpp:118: warning: âstd::string getWord(std::string)â defined but not used make: * [/root/poco/SocksServer/obj/Linux/x86_64/debug_shared/SocksServer.o] Error 1 The code for the ServerStats, ServerUser and ServerConnection classes is below: class ServerConnection { public: bool continue_connection; int bytes_in; int bytes_out; string source_address; string destination_address; ServerConnection() { continue_connection = true; } ~ServerConnection() { } }; class ServerUser { public: string username; int connection_count; string client_ip; ServerUser() { } ~ServerUser() { } ServerConnection* addConnection(string source_address, string destination_address) { //FastMutex::ScopedLock lock(_connection_mutex); ServerConnection connection; connection.source_address = source_address; connection.destination_address = destination_address; client_ip = getWord(source_address, ":"); _connections.push_back(connection); connection_count++; return &_connections.back(); } void removeConnection(string source_address) { //FastMutex::ScopedLock lock(_connection_mutex); for(list<ServerConnection>::iterator it = _connections.begin(); it != _connections.end(); it++) { if(it->source_address == source_address) { it = _connections.erase(it); connection_count--; } } } void disconnect() { //FastMutex::ScopedLock lock(_connection_mutex); for(list<ServerConnection>::iterator it = _connections.begin(); it != _connections.end(); it++) { it->continue_connection = false; } } list<ServerConnection>* getConnections() { return &_connections; } private: list<ServerConnection> _connections; //UNCOMMENTING THIS LINE BREAKS IT: //mutable FastMutex _connection_mutex; }; class ServerStats { public: int current_users; ServerStats() { current_users = 0; } ~ServerStats() { } ServerUser* addUser(string username) { FastMutex::ScopedLock lock(_user_mutex); for(list<ServerUser>::iterator it = _users.begin(); it != _users.end(); it++) { if(it->username == username) { return &(*it); } } ServerUser newUser; newUser.username = username; _users.push_back(newUser); current_users++; return &_users.back(); } void removeUser(string username) { FastMutex::ScopedLock lock(_user_mutex); for(list<ServerUser>::iterator it = _users.begin(); it != _users.end(); it++) { if(it->username == username) { _users.erase(it); current_users--; break; } } } ServerUser* getUser(string username) { FastMutex::ScopedLock lock(_user_mutex); for(list<ServerUser>::iterator it = _users.begin(); it != _users.end(); it++) { if(it->username == username) { return &(*it); } } return NULL; } private: list<ServerUser> _users; mutable FastMutex _user_mutex; }; Now I have never used C++ for a project of this size or mutexes for that matter so go easy please :) Firstly, can anyone tell me why the above is causing a compiler error? Secondly, can anyone suggest a better way of storing the information I require? Bear in mind that I need to update this info whenever connections come or go and it needs to be global to the whole server.

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• Prefer extension methods for encapsulation and reusability?

  - by tzaman

  edit4: wikified, since this seems to have morphed more into a discussion than a specific question. In C++ programming, it's generally considered good practice to "prefer non-member non-friend functions" instead of instance methods. This has been recommended by Scott Meyers in this classic Dr. Dobbs article, and repeated by Herb Sutter and Andrei Alexandrescu in C++ Coding Standards (item 44); the general argument being that if a function can do its job solely by relying on the public interface exposed by the class, it actually increases encapsulation to have it be external. While this confuses the "packaging" of the class to some extent, the benefits are generally considered worth it. Now, ever since I've started programming in C#, I've had a feeling that here is the ultimate expression of the concept that they're trying to achieve with "non-member, non-friend functions that are part of a class interface". C# adds two crucial components to the mix - the first being interfaces, and the second extension methods: Interfaces allow a class to formally specify their public contract, the methods and properties that they're exposing to the world. Any other class can choose to implement the same interface and fulfill that same contract. Extension methods can be defined on an interface, providing any functionality that can be implemented via the interface to all implementers automatically. And best of all, because of the "instance syntax" sugar and IDE support, they can be called the same way as any other instance method, eliminating the cognitive overhead! So you get the encapsulation benefits of "non-member, non-friend" functions with the convenience of members. Seems like the best of both worlds to me; the .NET library itself providing a shining example in LINQ. However, everywhere I look I see people warning against extension method overuse; even the MSDN page itself states: In general, we recommend that you implement extension methods sparingly and only when you have to. (edit: Even in the current .NET library, I can see places where it would've been useful to have extensions instead of instance methods - for example, all of the utility functions of List<T> (Sort, BinarySearch, FindIndex, etc.) would be incredibly useful if they were lifted up to IList<T> - getting free bonus functionality like that adds a lot more benefit to implementing the interface.) So what's the verdict? Are extension methods the acme of encapsulation and code reuse, or am I just deluding myself? (edit2: In response to Tomas - while C# did start out with Java's (overly, imo) OO mentality, it seems to be embracing more multi-paradigm programming with every new release; the main thrust of this question is whether using extension methods to drive a style change (towards more generic / functional C#) is useful or worthwhile..) edit3: overridable extension methods The only real problem identified so far with this approach, is that you can't specialize extension methods if you need to. I've been thinking about the issue, and I think I've come up with a solution. Suppose I have an interface MyInterface, which I want to extend - I define my extension methods in a MyExtension static class, and pair it with another interface, call it MyExtensionOverrider. MyExtension methods are defined according to this pattern: public static int MyMethod(this MyInterface obj, int arg, bool attemptCast=true) { if (attemptCast && obj is MyExtensionOverrider) { return ((MyExtensionOverrider)obj).MyMethod(arg); } // regular implementation here } The override interface mirrors all of the methods defined in MyExtension, except without the this or attemptCast parameters: public interface MyExtensionOverrider { int MyMethod(int arg); string MyOtherMethod(); } Now, any class can implement the interface and get the default extension functionality: public class MyClass : MyInterface { ... } Anyone that wants to override it with specific implementations can additionally implement the override interface: public class MySpecializedClass : MyInterface, MyExtensionOverrider { public int MyMethod(int arg) { //specialized implementation for one method } public string MyOtherMethod() { // fallback to default for others MyExtension.MyOtherMethod(this, attemptCast: false); } } And there we go: extension methods provided on an interface, with the option of complete extensibility if needed. Fully general too, the interface itself doesn't need to know about the extension / override, and multiple extension / override pairs can be implemented without interfering with each other. I can see three problems with this approach - It's a little bit fragile - the extension methods and override interface have to be kept synchronized manually. It's a little bit ugly - implementing the override interface involves boilerplate for every function you don't want to specialize. It's a little bit slow - there's an extra bool comparison and cast attempt added to the mainline of every method. Still, all those notwithstanding, I think this is the best we can get until there's language support for interface functions. Thoughts?

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• Spring MVC configuration problems

  - by Smek

  i have some problems with configuring Spring MVC. I made a maven multi module project with the following modules: /api /domain /repositories /webapp I like to share the domain and the repositories between the api and the webapp (both web projects). First i want to configure the webapp to use the repositories module so i added the dependencies in the xml file like this: <dependency> <groupId>${project.groupId}</groupId> <artifactId>domain</artifactId> <version>1.0-SNAPSHOT</version> </dependency> <dependency> <groupId>${project.groupId}</groupId> <artifactId>repositories</artifactId> <version>1.0-SNAPSHOT</version> </dependency> And my controller in the webapp module looks like this: package com.mywebapp.webapp; import com.mywebapp.domain.Person; import com.mywebapp.repositories.services.PersonService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; @Controller @RequestMapping("/") @Configuration @ComponentScan("com.mywebapp.repositories") public class PersonController { @Autowired PersonService personservice; @RequestMapping(method = RequestMethod.GET) public String printWelcome(ModelMap model) { Person p = new Person(); p.age = 23; p.firstName = "John"; p.lastName = "Doe"; personservice.createNewPerson(p); model.addAttribute("message", "Hello world!"); return "index"; } } In my webapp module i try to load configuration files in my web.xml like this: <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:/META-INF/persistence-context.xml, classpath:/META-INF/service-context.xml</param-value> </context-param> These files cannot be found so i get the following error: org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [META-INF/persistence-context.xml]; nested exception is java.io.FileNotFoundException: class path resource [META-INF/persistence-context.xml] cannot be opened because it does not exist These files are in the repositories module so my first question is how can i make Spring to find these files? I also have trouble Autowiring the PersonService to my Controller class did i forget to configure something in my XML? Here is the error message: [INFO] [talledLocalContainer] SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener [INFO] [talledLocalContainer] org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'personServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.mywebapp.repositories.repository.PersonRepository com.mywebapp.repositories.services.PersonServiceImpl.personRepository; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.mywebapp.repositories.repository.PersonRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} PersonServiceImple.java: package com.mywebapp.repositories.services; import com.mywebapp.domain.Person; import com.mywebapp.repositories.repository.PersonRepository; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.mongodb.core.MongoTemplate; import org.springframework.stereotype.Service; @Service public class PersonServiceImpl implements PersonService{ @Autowired public PersonRepository personRepository; @Autowired public MongoTemplate personTemplate; @Override public Person createNewPerson(Person person) { return personRepository.save(person); } } PersonService.java package com.mywebapp.repositories.services; import com.mywebapp.domain.Person; public interface PersonService { Person createNewPerson(Person person); } PersonRepository.java: package com.mywebapp.repositories.repository; import com.mywebapp.domain.Person; import org.springframework.data.mongodb.repository.MongoRepository; import org.springframework.stereotype.Repository; import java.math.BigInteger; @Repository public interface PersonRepository extends MongoRepository<Person, BigInteger> { } persistance-context.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mongo="http://www.springframework.org/schema/data/mongo" xsi:schemaLocation= "http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <context:property-placeholder location="classpath:mongo.properties"/> <mongo:mongo host="${mongo.host}" port="${mongo.port}" id="mongo"> <mongo:options connections-per-host="${mongo.connectionsPerHost}" threads-allowed-to-block-for-connection-multiplier="${mongo.threadsAllowedToBlockForConnectionMultiplier}" connect-timeout="${mongo.connectTimeout}" max-wait-time="${mongo.maxWaitTime}" auto-connect-retry="${mongo.autoConnectRetry}" socket-keep-alive="${mongo.socketKeepAlive}" socket-timeout="${mongo.socketTimeout}" slave-ok="${mongo.slaveOk}" write-number="1" write-timeout="0" write-fsync="true"/> </mongo:mongo> <mongo:db-factory dbname="person" mongo-ref="mongo" id="mongoDbFactory"/> <bean id="personTemplate" name="personTemplate" class="org.springframework.data.mongodb.core.MongoTemplate"> <constructor-arg name="mongoDbFactory" ref="mongoDbFactory"/> </bean> <mongo:repositories base-package="com.mywebapp.repositories.repository" mongo-template-ref="personTemplate"> <mongo:repository id="personRepository" repository-impl-postfix="PersonRepository" mongo-template-ref="personTemplate" create-query-indexes="true"/> </mongo:repositories> Thanks

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• C# UDP decoding datagrams fails randomly

  - by Tom Frey

  Hi, I'm experiencing an issue in a multi threaded application and have been debugging it for the last 3 days but for the life of it can not figure it out. I'm writing this, hoping that I either have a DUH moment when typing this or somebody sees something obvious in the code snippets I provide. Here's what's going on: I've been working on a new UDP networking library and have a data producer that multicasts UDP datagrams to several receiver applications. The sender sends on two different sockets that are bound to separate UDP multicast addresses and separate ports. The receiver application also creates two sockets and binds each one to one of the sender's multicast address/port. When the receiver receives the datagram, it copies it from the the buffer in a MemoryStream which is then put onto a thread safe queue, where another thread reads from it and decodes the data out of the MemoryStream. Both sockets have their own queues. What happens now is really weird, it happens randomly, non-reproducible and when I run multiple receiver applications, it only happens randomly on one of them every now and then. Basically, the thread that reads the MemoryStream out of the queue, reads it via a BinaryReader like ReadInt32(), etc. and thereby decodes the data. Every now and then however when it reads the data, the data it reads from it is incorrect, e.g. a negative integer number which the sender never would encode. However, as mentioned before, the decoding only fails in one of the receiver applications, in the other ones the datagram decodes fine. Now you might be saying, well, probably the UDP datagram has a byte corruption or something but I've logged every single datagram that's coming in and compared them on all receivers and the datagrams every application receives are absolutely identical. Now it gets even weirder, when I dump the datagram that failed to decode to disk and write a unit test that reads it and runs it through the decoder, it decodes just fine. Also when I wrap a try/catch around the decoder, reset the MemoryStream position in the catch and run it through the decoder again, it decodes just fine. To make it even weirder, this also only happens when I bind both sockets to read data from the sender, if I only bind one, it doesn't happen or at least I wasn't able to reproduce it. Here are is some corresponding code to what's going on: This is the receive callback for the socket: private void ReceiveCompleted(object sender, SocketAsyncEventArgs args) { if (args.SocketError != SocketError.Success) { InternalShutdown(args.SocketError); return; } if (args.BytesTransferred > SequencedUnitHeader.UNIT_HEADER_SIZE) { DataChunk chunk = new DataChunk(args.BytesTransferred); Buffer.BlockCopy(args.Buffer, 0, chunk.Buffer, 0, args.BytesTransferred); chunk.MemoryStream = new MemoryStream(chunk.Buffer); chunk.BinaryReader = new BinaryReader(chunk.MemoryStream); chunk.SequencedUnitHeader.SequenceID = chunk.BinaryReader.ReadUInt32(); chunk.SequencedUnitHeader.Count = chunk.BinaryReader.ReadByte(); if (prevSequenceID + 1 != chunk.SequencedUnitHeader.SequenceID) { log.Error("UdpDatagramGap\tName:{0}\tExpected:{1}\tReceived:{2}", unitName, prevSequenceID + 1, chunk.SequencedUnitHeader.SequenceID); } else if (chunk.SequencedUnitHeader.SequenceID < prevSequenceID) { log.Error("UdpOutOfSequence\tName:{0}\tExpected:{1}\tReceived:{2}", unitName, prevSequenceID + 1, chunk.SequencedUnitHeader.SequenceID); } prevSequenceID = chunk.SequencedUnitHeader.SequenceID; messagePump.Produce(chunk); } else UdpStatistics.FramesRxDiscarded++; Socket.InvokeAsyncMethod(Socket.ReceiveAsync, ReceiveCompleted, asyncReceiveArgs); } Here's some stub code that decodes the data: public static void OnDataChunk(DataChunk dataChunk) { try { for (int i = 0; i < dataChunk.SequencedUnitHeader.Count; i++) { int val = dataChunk.BinaryReader.ReadInt32(); if(val < 0) throw new Exception("EncodingException"); // do something with that value } } catch (Exception ex) { writer.WriteLine("ID:" + dataChunk.SequencedUnitHeader.SequenceID + " Count:" + dataChunk.SequencedUnitHeader.Count + " " + BitConverter.ToString(dataChunk.Buffer, 0, dataChunk.Size)); writer.Flush(); log.ErrorException("OnDataChunk", ex); log.Info("RETRY FRAME:{0} Data:{1}", dataChunk.SequencedUnitHeader.SequenceID, BitConverter.ToString(dataChunk.Buffer, 0, dataChunk.Size)); dataChunk.MemoryStream.Position = 0; dataChunk.SequencedUnitHeader.SequenceID = dataChunk.BinaryReader.ReadUInt32(); dataChunk.SequencedUnitHeader.Count = dataChunk.BinaryReader.ReadByte(); OnDataChunk(dataChunk); } } You see in the catch{} part I simply reset the MemoryStream.Position to 0 and call the same method again and it works just fine that next time? I'm really out of ideas at this point and unfortunately had no DUH moment writing this. Anybody have any kind of idea what might be going on or what else I could do to troubleshoot this? Thanks, Tom

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• Intellij Idea 13.x and ASM 5.x library incompatible?

  - by Jarrod Roberson

  I can't get Intellij Idea 13.0 to compile my code against ASM 5.0.3 I have a multi-module Maven project. It compiles and installs successfully. Apparently com.google.findbugs:findbugs has a dependency on asm:asm:3.3 and I want to use org.ow2.asm:asm:5.0.3 to manipulate some bytecode. So in the parent pom.xml I exclude the asm:asm:3.3 dependencies from the classpath. This works fine when I run mvn install from the command line. I can't get the Build - Make Project menu selection to work in Intellij Idea. Here is the relevant parts of my pom.xml files. parent.pom <dependency> <groupId>org.ow2.asm</groupId> <artifactId>asm</artifactId> <version>5.0.3</version> </dependency> <dependency> <groupId>org.ow2.asm</groupId> <artifactId>asm-tree</artifactId> <version>5.0.3</version> </dependency> <dependency> <groupId>org.ow2.asm</groupId> <artifactId>asm-util</artifactId> <version>5.0.3</version> </dependency> <dependency> <groupId>org.ow2.asm</groupId> <artifactId>asm-commons</artifactId> <version>5.0.3</version> </dependency> <dependency> <groupId>com.google.code.findbugs</groupId> <artifactId>findbugs</artifactId> <version>2.0.3</version> <exclusions> <exclusion> <groupId>asm</groupId> <artifactId>asm</artifactId> </exclusion> <exclusion> <groupId>asm</groupId> <artifactId>asm-commons</artifactId> </exclusion> <exclusion> <groupId>asm</groupId> <artifactId>asm-tree</artifactId> </exclusion> </exclusions> </dependency> Here is the code that is failing 18 public static void main(final String[] args) throws IOException 19 { 20 final InputStream is = NotEmptyTest.class.getResourceAsStream("/com/vertigrated/annotation/NotEmptyTest.class"); 21 final ClassReader cr = new ClassReader(is); 22 final ClassNode cn = new ClassNode(); 23 cr.accept(cn, 0); 24 for (final MethodNode mn : cn.methods) 25 { 26 - 38 snipped for brevity 39 } 40 } 41 } Here is the error message: Information:Using javac 1.7.0_25 to compile java sources Information:java: Errors occurred while compiling module 'tests' Information:Compilation completed with 1 error and 2 warnings in 2 sec Information:1 error Information:2 warnings /<path to my source code>/NotEmptyTest.java Error:Error:line (24)java: incompatible types required: org.objectweb.asm.tree.MethodNode found: java.lang.Object Warning:Warning:java: /<path to my project>//NotEmptyTest.java uses unchecked or unsafe operations. Warning:Warning:java: Recompile with -Xlint:unchecked for details. As you can see in the screen capture, it reports the correct version of the libraries in the Javadoc but the AutoComplete shows the old 3.3 non-typesafe return value of List instead of List<MethodNode>: Here is what Maven knows, which is correct: [INFO] --- maven-dependency-plugin:2.8:list (default-cli) @ tests --- [INFO] [INFO] The following files have been resolved: [INFO] com.google.code.findbugs:bcel:jar:2.0.1:compile [INFO] junit:junit:jar:4.11:test [INFO] xml-apis:xml-apis:jar:1.0.b2:compile [INFO] com.apple:AppleJavaExtensions:jar:1.4:compile [INFO] javax.inject:javax.inject:jar:1:compile [INFO] jaxen:jaxen:jar:1.1.6:compile [INFO] org.ow2.asm:asm-util:jar:5.0.3:compile [INFO] com.google.inject:guice:jar:3.0:compile [INFO] dom4j:dom4j:jar:1.6.1:compile [INFO] com.google.code.findbugs:jFormatString:jar:2.0.1:compile [INFO] net.jcip:jcip-annotations:jar:1.0:compile [INFO] org.ow2.asm:asm-tree:jar:5.0.3:compile [INFO] commons-lang:commons-lang:jar:2.6:compile [INFO] com.google.code.findbugs:jsr305:jar:2.0.1:compile [INFO] org.hamcrest:hamcrest-core:jar:1.3:test [INFO] aopalliance:aopalliance:jar:1.0:compile [INFO] com.google.code.findbugs:findbugs:jar:2.0.3:compile [INFO] org.ow2.asm:asm-commons:jar:5.0.3:compile [INFO] org.ow2.asm:asm:jar:5.0.3:compile How do I get Intellij Idea to use the correct dependency internally?

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• linux thread synchronization

  - by johnnycrash

  I am new to linux and linux threads. I have spent some time googling to try to understand the differences between all the functions available for thread synchronization. I still have some questions. I have found all of these different types of synchronizations, each with a number of functions for locking, unlocking, testing the lock, etc. gcc atomic operations futexes mutexes spinlocks seqlocks rculocks conditions semaphores My current (but probably flawed) understanding is this: semaphores are process wide, involve the filesystem (virtually I assume), and are probably the slowest. Futexes might be the base locking mechanism used by mutexes, spinlocks, seqlocks, and rculocks. Futexes might be faster than the locking mechanisms that are based on them. Spinlocks dont block and thus avoid context swtiches. However they avoid the context switch at the expense of consuming all the cycles on a CPU until the lock is released (spinning). They should only should be used on multi processor systems for obvious reasons. Never sleep in a spinlock. The seq lock just tells you when you finished your work if a writer changed the data the work was based on. You have to go back and repeat the work in this case. Atomic operations are the fastest synch call, and probably are used in all the above locking mechanisms. You do not want to use atomic operations on all the fields in your shared data. You want to use a lock (mutex, futex, spin, seq, rcu) or a single atomic opertation on a lock flag when you are accessing multiple data fields. My questions go like this: Am I right so far with my assumptions? Does anyone know the cpu cycle cost of the various options? I am adding parallelism to the app so we can get better wall time response at the expense of running fewer app instances per box. Performances is the utmost consideration. I don't want to consume cpu with context switching, spinning, or lots of extra cpu cycles to read and write shared memory. I am absolutely concerned with number of cpu cycles consumed. Which (if any) of the locks prevent interruption of a thread by the scheduler or interrupt...or am I just an idiot and all synchonization mechanisms do this. What kinds of interruption are prevented? Can I block all threads or threads just on the locking thread's CPU? This question stems from my fear of interrupting a thread holding a lock for a very commonly used function. I expect that the scheduler might schedule any number of other workers who will likely run into this function and then block because it was locked. A lot of context switching would be wasted until the thread with the lock gets rescheduled and finishes. I can re-write this function to minimize lock time, but still it is so commonly called I would like to use a lock that prevents interruption...across all processors. I am writing user code...so I get software interrupts, not hardware ones...right? I should stay away from any functions (spin/seq locks) that have the word "irq" in them. Which locks are for writing kernel or driver code and which are meant for user mode? Does anyone think using an atomic operation to have multiple threads move through a linked list is nuts? I am thinking to atomicly change the current item pointer to the next item in the list. If the attempt works, then the thread can safely use the data the current item pointed to before it was moved. Other threads would now be moved along the list. futexes? Any reason to use them instead of mutexes? Is there a better way than using a condition to sleep a thread when there is no work? When using gcc atomic ops, specifically the test_and_set, can I get a performance increase by doing a non atomic test first and then using test_and_set to confirm? *I know this will be case specific, so here is the case. There is a large collection of work items, say thousands. Each work item has a flag that is initialized to 0. When a thread has exclusive access to the work item, the flag will be one. There will be lots of worker threads. Any time a thread is looking for work, they can non atomicly test for 1. If they read a 1, we know for certain that the work is unavailable. If they read a zero, they need to perform the atomic test_and_set to confirm. So if the atomic test_and_set is 500 cpu cycles because it is disabling pipelining, causes cpu's to communicate and L2 caches to flush/fill .... and a simple test is 1 cycle .... then as long as I had a better ratio of 500 to 1 when it came to stumbling upon already completed work items....this would be a win.* I hope to use mutexes or spinlocks to sparilngly protect sections of code that I want only one thread on the SYSTEM (not jsut the CPU) to access at a time. I hope to sparingly use gcc atomic ops to select work and minimize use of mutexes and spinlocks. For instance: a flag in a work item can be checked to see if a thread has worked it (0=no, 1=yes or in progress). A simple test_and_set tells the thread if it has work or needs to move on. I hope to use conditions to wake up threads when there is work. Thanks!

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• What does Ruby have that Python doesn't, and vice versa?

  - by Lennart Regebro

  There is a lot of discussions of Python vs Ruby, and I all find them completely unhelpful, because they all turn around why feature X sucks in language Y, or that claim language Y doesn't have X, although in fact it does. I also know exactly why I prefer Python, but that's also subjective, and wouldn't help anybody choosing, as they might not have the same tastes in development as I do. It would therefore be interesting to list the differences, objectively. So no "Python's lambdas sucks". Instead explain what Ruby's lambdas can do that Python's can't. No subjectivity. Example code is good! Don't have several differences in one answer, please. And vote up the ones you know are correct, and down those you know are incorrect (or are subjective). Also, differences in syntax is not interesting. We know Python does with indentation what Ruby does with brackets and ends, and that @ is called self in Python. UPDATE: This is now a community wiki, so we can add the big differences here. Ruby has a class reference in the class body In Ruby you have a reference to the class (self) already in the class body. In Python you don't have a reference to the class until after the class construction is finished. An example: class Kaka puts self end self in this case is the class, and this code would print out "Kaka". There is no way to print out the class name or in other ways access the class from the class definition body in Python. All classes are mutable in Ruby This lets you develop extensions to core classes. Here's an example of a rails extension: class String def starts_with?(other) head = self[0, other.length] head == other end end Ruby has Perl-like scripting features Ruby has first class regexps, $-variables, the awk/perl line by line input loop and other features that make it more suited to writing small shell scripts that munge text files or act as glue code for other programs. Ruby has first class continuations Thanks to the callcc statement. In Python you can create continuations by various techniques, but there is no support built in to the language. Ruby has blocks With the "do" statement you can create a multi-line anonymous function in Ruby, which will be passed in as an argument into the method in front of do, and called from there. In Python you would instead do this either by passing a method or with generators. Ruby: amethod { |here| many=lines+of+code goes(here) } Python: def function(here): many=lines+of+code goes(here) amethod(function) Interestingly, the convenience statement in Ruby for calling a block is called "yield", which in Python will create a generator. Ruby: def themethod yield 5 end themethod do |foo| puts foo end Python: def themethod(): yield 5 for foo in themethod: print foo Although the principles are different, the result is strikingly similar. Python has built-in generators (which are used like Ruby blocks, as noted above) Python has support for generators in the language. In Ruby you could use the generator module that uses continuations to create a generator from a block. Or, you could just use a block/proc/lambda! Moreover, in Ruby 1.9 Fibers are, and can be used as, generators. docs.python.org has this generator example: def reverse(data): for index in range(len(data)-1, -1, -1): yield data[index] Contrast this with the above block examples. Python has flexible name space handling In Ruby, when you import a file with require, all the things defined in that file will end up in your global namespace. This causes namespace pollution. The solution to that is Rubys modules. But if you create a namespace with a module, then you have to use that namespace to access the contained classes. In Python, the file is a module, and you can import its contained names with from themodule import *, thereby polluting the namespace if you want. But you can also import just selected names with from themodule import aname, another or you can simply import themodule and then access the names with themodule.aname. If you want more levels in your namespace you can have packages, which are directories with modules and an __init__.py file. Python has docstrings Docstrings are strings that are attached to modules, functions and methods and can be introspected at runtime. This helps for creating such things as the help command and automatic documentation. def frobnicate(bar): """frobnicate takes a bar and frobnicates it >>> bar = Bar() >>> bar.is_frobnicated() False >>> frobnicate(bar) >>> bar.is_frobnicated() True """ Python has more libraries Python has a vast amount of available modules and bindings for libraries. Python has multiple inheritance Ruby does not ("on purpose" -- see Ruby's website, see here how it's done in Ruby). It does reuse the module concept as a sort of abstract classes. Python has list/dict comprehensions Python: res = [x*x for x in range(1, 10)] Ruby: res = (0..9).map { |x| x * x } Python: >>> (x*x for x in range(10)) <generator object <genexpr> at 0xb7c1ccd4> >>> list(_) [0, 1, 4, 9, 16, 25, 36, 49, 64, 81] Ruby: p = proc { |x| x * x } (0..9).map(&p) Python: >>> {x:str(y*y) for x,y in {1:2, 3:4}.items()} {1: '4', 3: '16'} Ruby: >> Hash[{1=>2, 3=>4}.map{|x,y| [x,(y*y).to_s]}] => {1=>"4", 3=>"16"} Python has decorators Things similar to decorators can be created in Ruby, and it can also be argued that they aren't as necessary as in Python.

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• Yet another C# Deadlock Debugging Question

  - by Roo

  Hi All, I have a multi-threaded application build in C# using VS2010 Professional. It's quite a large application and we've experienced the classing GUI cross-threading and deadlock issues before, but in the past month we've noticed the appears to lock up when left idle for around 20-30 minutes. The application is irresponsive and although it will repaint itself when other windows are dragged in front of the application and over it, the GUI still appears to be locked... interstingly (unlike if the GUI thread is being used for a considerable amount of time) the Close, Maximise and minimise buttons are also irresponsive and when clicked the little (Not Responding...) text is not displayed in the title of the application i.e. Windows still seems to think it's running fine. If I break/pause the application using the debugger, and view the threads that are running. There are 3 threads of our managed code that are running, and a few other worker threads whom the source code cannot be displayed for. The 3 threads that run are: The main/GUI thread A thread that loops indefinitely A thread that loops indefinitely If I step into threads 2 and 3, they appear to be looping correctly. They do not share locks (even with the main GUI thread) and they are not using the GUI thread at all. When stepping into the main/GUI thread however, it's broken on Application.Run... This problem screams deadlock to me, but what I don't understand is if it's deadlock, why can't I see the line of code the main/GUI thread is hanging on? Any help will be greatly appreciated! Let me know if you need more information... Cheers, Roo -----------------------------------------------------SOLUTION-------------------------------------------------- Okay, so the problem is now solved. Thanks to everyone for their suggestions! Much appreciated! I've marked the answer that solved my initial problem of determining where on the main/UI thread the application hangs (I handn't turned off the "Enable Just My Code" option). The overall issue I was experiencing was indeed Deadlock, however. After obtaining the call-stack and popping the top half of it into Google I came across this which explains exactly what I was experiencing... http://timl.net/ This references a lovely guide to debugging the issue... http://www.aaronlerch.com/blog/2008/12/15/debugging-ui/ This identified a control I was constructing off the GUI thread. I did know this, however, and was marshalling calls correctly, but what I didn't realise was that behind the scenes this Control was subscribing to an event or set of events that are triggered when e.g. a Windows session is unlocked or the screensaver exits. These calls are always made on the main/UI thread and were blocking when it saw the call was made on the incorrect thread. Kim explains in more detail here... http://krgreenlee.blogspot.com/2007/09/onuserpreferencechanged-hang.html In the end I found an alternative solution which did not require this Control off the main/UI thread. That appears to have solved the problem and the application no longer hangs. I hope this helps anyone who's confronted by a similar problem. Thanks again to everyone on here who helped! (and indirectly, the delightful bloggers I've referenced above!) Roo -----------------------------------------------------SOLUTION II-------------------------------------------------- Aren't threading issues delightful...you think you've solved it, and a month down the line it pops back up again. I still believe the solution above resolved an issue that would cause simillar behaviour, but we encountered the problem again. As we spent a while debugging this, I thought I'd update this question with our (hopefully) final solution: The problem appears to have been a bug in the Infragistics components in the WinForms 2010.1 release (no hot fixes). We had been running from around the time the freeze issue appeared (but had also added a bunch of other stuff too). After upgrading to WinForms 2010.3, we've yet to reproduce the issue (deja vu). See my question here for a bit more information: 'http://stackoverflow.com/questions/4077822/net-4-0-and-the-dreaded-onuserpreferencechanged-hang'. Hans has given a nice summary of the general issue. I hope this adds a little to the suggestions/information surrounding the nutorious OnUserPreferenceChanged Hang (or whatever you'd like to call it). Cheers, Roo

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• Tooltips problem, making this javascript work with my smarty foreach loop, help pelase!

  - by Kyle Sevenoaks

  I am using an example of tooltips from http://www.dynamicdrive.com/dynamicindex5/stickytooltip.htm on www.euroworker.no/order I have this code here to work with, but it just doesn't seem to work correctly, I've tried everything I can think of (not a lot of things) Here's the code. {foreach from=$cart.cartItems item="item" name="cart"} <div class="{zebra loop="cart"}"> <div id="sgproductview"> <div id="cart2Varekode"> <p> {if $product.sku} <span class="param">{$item.product.sku}</span> {else} <span>{img src=$item.Product.DefaultImage.paths.1 alt=$item.Product.name_lang|escape}</span> {/if} </p> </div> <div id="cart2Produkt"> <p>{if $item.Product.ID} <a href="{productUrl product=$item.Product}" data-tooltip="sticky{$smarty.foreach.cart.iteration}" target="_blank">{$item.Product.name_lang|truncate:20}</a> {else} <span>{$item.Product.name_lang|truncate:20}</span> </a> {/if} </p> <p> {include file="order/itemVariations.tpl"} {include file="order/block/itemOptions.tpl"} {if $multi} {include file="order/selectItemAddress.tpl" item=$item} {/if} </p> </div> {if $item.Product.DefaultImage.paths.3} <div id="mystickytooltip" class="stickytooltip"> <div style="padding:5px;"> <div id="sticky1" class="atip" style="width:200px;"> <img src="{$item.Product.DefaultImage.paths.3}" alt="{$item.Product.name_lang|escape}"><br> {$item.Product.name_lang} </div> <div id="sticky2" class="atip" style="width:200px;"> <img src={$item.Product.DefaultImage.paths.3} alt="{$item.Product.name_lang|escape}"><br> {$item.formattedPrice} </div> <div id="sticky3" class="atip" style="width:200px;"> <img src="{$item.Product.DefaultImage.paths.3}" alt="{$item.Product.name_lang|escape}"><br> {$item.Product.name_lang}PRODUCT 3 </div> <div id="sticky4" class="atip" style="width:200px;"> <img src="{$item.Product.DefaultImage.paths.3}" alt="{$item.Product.name_lang|escape}"><br> {$item.Product.name_lang} </div> </div> </div> {/if} <div id="cart2Price"> <p class="actualPrice"> {$item.formattedPrice} </p> </div> <div id="salg"></div> <div id="cart2Salg"> <p></p> </div> <div id="antallbox"> <p class="cartQuant"> {textfield name="item_`$item.ID`" class="text"} </p> </div> <div id="cart2Total"> <p> {if $item.count == 1} <span class="basePrice">{$item.formattedBasePrice}</span><span class="actualPrice">{$item.formattedPrice}</span> {else} {$item.formattedDisplaySubTotal} <div class="subTotalCalc"> {$item.count} x <span class="basePrice">{$item.formattedBasePrice}</span><span class="actualPrice">{$item.formattedPrice}</span> </div> {/if} </p> </div> <div id="delete"> {if 'ENABLE_WISHLISTS'|config} <a href="{link controller=order action=moveToWishList id=$item.ID query="return=`$return`"}">{t _move_to_wishlist}</a> {/if} <a id="slett" href="{link controller=order action=delete id=$item.ID query="return=`$return`"}" title="Slett"><!--{t _remove}--></a> </div> </div> </div> {/foreach} Anyone can help? {html_image} doesn't work, by the way and all the extensions are present and correct.

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• How to handle failure to release a resource which is contained in a smart pointer?

  - by cj

  How should an error during resource deallocation be handled, when the object representing the resource is contained in a shared pointer? Smart pointers are a useful tool to manage resources safely. Examples of such resources are memory, disk files, database connections, or network connections. // open a connection to the local HTTP port boost::shared_ptr<Socket> socket = Socket::connect("localhost:80"); In a typical scenario, the class encapsulating the resource should be noncopyable and polymorphic. A good way to support this is to provide a factory method returning a shared pointer, and declare all constructors non-public. The shared pointers can now be copied from and assigned to freely. The object is automatically destroyed when no reference to it remains, and the destructor then releases the resource. /** A TCP/IP connection. */ class Socket { public: static boost::shared_ptr<Socket> connect(const std::string& address); virtual ~Socket(); protected: Socket(const std::string& address); private: // not implemented Socket(const Socket&); Socket& operator=(const Socket&); }; But there is a problem with this approach. The destructor must not throw, so a failure to release the resource will remain undetected. A common way out of this problem is to add a public method to release the resource. class Socket { public: virtual void close(); // may throw // ... }; Unfortunately, this approach introduces another problem: Our objects may now contain resources which have already been released. This complicates the implementation of the resource class. Even worse, it makes it possible for clients of the class to use it incorrectly. The following example may seem far-fetched, but it is a common pitfall in multi-threaded code. socket->close(); // ... size_t nread = socket->read(&buffer[0], buffer.size()); // wrong use! Either we ensure that the resource is not released before the object is destroyed, thereby losing any way to deal with a failed resource deallocation. Or we provide a way to release the resource explicitly during the object's lifetime, thereby making it possible to use the resource class incorrectly. There is a way out of this dilemma. But the solution involves using a modified shared pointer class. These modifications are likely to be controversial. Typical shared pointer implementations, such as boost::shared_ptr, require that no exception be thrown when their object's destructor is called. Generally, no destructor should ever throw, so this is a reasonable requirement. These implementations also allow a custom deleter function to be specified, which is called in lieu of the destructor when no reference to the object remains. The no-throw requirement is extended to this custom deleter function. The rationale for this requirement is clear: The shared pointer's destructor must not throw. If the deleter function does not throw, nor will the shared pointer's destructor. However, the same holds for other member functions of the shared pointer which lead to resource deallocation, e.g. reset(): If resource deallocation fails, no exception can be thrown. The solution proposed here is to allow custom deleter functions to throw. This means that the modified shared pointer's destructor must catch exceptions thrown by the deleter function. On the other hand, member functions other than the destructor, e.g. reset(), shall not catch exceptions of the deleter function (and their implementation becomes somewhat more complicated). Here is the original example, using a throwing deleter function: /** A TCP/IP connection. */ class Socket { public: static SharedPtr<Socket> connect(const std::string& address); protected: Socket(const std::string& address); virtual Socket() { } private: struct Deleter; // not implemented Socket(const Socket&); Socket& operator=(const Socket&); }; struct Socket::Deleter { void operator()(Socket* socket) { // Close the connection. If an error occurs, delete the socket // and throw an exception. delete socket; } }; SharedPtr<Socket> Socket::connect(const std::string& address) { return SharedPtr<Socket>(new Socket(address), Deleter()); } We can now use reset() to free the resource explicitly. If there is still a reference to the resource in another thread or another part of the program, calling reset() will only decrement the reference count. If this is the last reference to the resource, the resource is released. If resource deallocation fails, an exception is thrown. SharedPtr<Socket> socket = Socket::connect("localhost:80"); // ... socket.reset();

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• TStringList and TThread that does not free all of its memory

  - by VanillaH

  Version used: Delphi 7. I'm working on a program that does a simple for loop on a Virtual ListView. The data is stored in the following record: type TList=record Item:Integer; SubItem1:String; SubItem2:String; end; Item is the index. SubItem1 the status of the operations (success or not). SubItem2 the path to the file. The for loop loads each file, does a few operations and then, save it. The operations take place in a TStringList. Files are about 2mb each. Now, if I do the operations on the main form, it works perfectly. Multi-threaded, there is a huge memory problem. Somehow, the TStringList doesn't seem to be freed completely. After 3-4k files, I get an EOutofMemory exception. Sometimes, the software is stuck to 500-600mb, sometimes not. In any case, the TStringList always return an EOutofMemory exception and no file can be loaded anymore. On computers with more memory, it takes longer to get the exception. The same thing happens with other components. For instance, if I use THTTPSend from Synapse, well, after a while, the software cannot create any new threads because the memory consumption is too high. It's around 500-600mb while it should be, max, 100mb. On the main form, everything works fine. I guess the mistake is on my side. Maybe I don't understand threads enough. I tried to free everything on the Destroy event. I tried FreeAndNil procedure. I tried with only one thread at a time. I tried freeing the thread manually (no FreeOnTerminate...) No luck. So here is the thread code. It's only the basic idea; not the full code with all the operations. If I remove the LoadFile prodecure, everything works good. A thread is created for each file, according to a thread pool. unit OperationsFiles; interface uses Classes, SysUtils, Windows; type TOperationFile = class(TThread) private Position : Integer; TPath, StatusMessage: String; FileStringList: TStringList; procedure UpdateStatus; procedure LoadFile; protected procedure Execute; override; public constructor Create(Path: String; LNumber: Integer); end; implementation uses Form1; procedure TOperationFile.LoadFile; begin try FileStringList.LoadFromFile(TPath); // Operations... StatusMessage := 'Success'; except on E : Exception do StatusMessage := E.ClassName; end; end; constructor TOperationFile.Create(Path : String; LNumber: Integer); begin inherited Create(False); TPath := Path; Position := LNumber; FreeOnTerminate := True; end; procedure TOperationFile.UpdateStatus; begin FileList[Position].SubItem1 := StatusMessage; Form1.ListView4.UpdateItems(Position,Position); end; procedure TOperationFile.Execute; begin FileStringList:= TStringList.Create; LoadFile; Synchronize(UpdateStatus); FileStringList.Free; end; end. What could be the problem? I thought at one point that, maybe, too many threads are created. If a user loads 1 million files, well, ultimately, 1 million threads is going to be created -- although, only 50 threads are created and running at the same time. Thanks for your input.

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• Designing an API with compile-time option to remove first parameter to most functions and use a glob

  - by tomlogic

  I'm trying to design a portable API in ANSI C89/ISO C90 to access a wireless networking device on a serial interface. The library will have multiple network layers, and various versions need to run on embedded devices as small as an 8-bit micro with 32K of code and 2K of data, on up to embedded devices with a megabyte or more of code and data. In most cases, the target processor will have a single network interface and I'll want to use a single global structure with all state information for that device. I don't want to pass a pointer to that structure through the network layers. In a few cases (e.g., device with more resources that needs to live on two networks) I will interface to multiple devices, each with their own global state, and will need to pass a pointer to that state (or an index to a state array) through the layers. I came up with two possible solutions, but neither one is particularly pretty. Keep in mind that the full driver will potentially be 20,000 lines or more, cover multiple files, and contain hundreds of functions. The first solution requires a macro that discards the first parameter for every function that needs to access the global state: // network.h typedef struct dev_t { int var; long othervar; char name[20]; } dev_t; #ifdef IF_MULTI #define foo_function( x, a, b, c) _foo_function( x, a, b, c) #define bar_function( x) _bar_function( x) #else extern dev_t DEV; #define IFACE (&DEV) #define foo_function( x, a, b, c) _foo_function( a, b, c) #define bar_function( x) _bar_function( ) #endif int bar_function( dev_t *IFACE); int foo_function( dev_t *IFACE, int a, long b, char *c); // network.c #ifndef IF_MULTI dev_t DEV; #endif int bar_function( dev_t *IFACE) { memset( IFACE, 0, sizeof *IFACE); return 0; } int foo_function( dev_t *IFACE, int a, long b, char *c) { bar_function( IFACE); IFACE->var = a; IFACE->othervar = b; strcpy( IFACE->name, c); return 0; } The second solution defines macros to use in the function declarations: // network.h typedef struct dev_t { int var; long othervar; char name[20]; } dev_t; #ifdef IF_MULTI #define DEV_PARAM_ONLY dev_t *IFACE #define DEV_PARAM DEV_PARAM_ONLY, #else extern dev_t DEV; #define IFACE (&DEV) #define DEV_PARAM_ONLY void #define DEV_PARAM #endif int bar_function( DEV_PARAM_ONLY); // I don't like the missing comma between DEV_PARAM and arg2... int foo_function( DEV_PARAM int a, long b, char *c); // network.c #ifndef IF_MULTI dev_t DEV; #endif int bar_function( DEV_PARAM_ONLY) { memset( IFACE, 0, sizeof *IFACE); return 0; } int foo_function( DEV_PARAM int a, long b, char *c) { bar_function( IFACE); IFACE->var = a; IFACE->othervar = b; strcpy( IFACE->name, c); return 0; } The C code to access either method remains the same: // multi.c - example of multiple interfaces #define IF_MULTI #include "network.h" dev_t if0, if1; int main() { foo_function( &if0, -1, 3.1415926, "public"); foo_function( &if1, 42, 3.1415926, "private"); return 0; } // single.c - example of a single interface #include "network.h" int main() { foo_function( 11, 1.0, "network"); return 0; } Is there a cleaner method that I haven't figured out? I lean toward the second since it should be easier to maintain, and it's clearer that there's some macro magic in the parameters to the function. Also, the first method requires prefixing the function names with "_" when I want to use them as function pointers. I really do want to remove the parameter in the "single interface" case to eliminate unnecessary code to push the parameter onto the stack, and to allow the function to access the first "real" parameter in a register instead of loading it from the stack. And, if at all possible, I don't want to have to maintain two separate codebases. Thoughts? Ideas? Examples of something similar in existing code? (Note that using C++ isn't an option, since some of the planned targets don't have a C++ compiler available.)

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• Does my basic PHP Socket Server need optimization?

  - by Tom

  Like many people, I can do a lot of things with PHP. One problem I do face constantly is that other people can do it much cleaner, much more organized and much more structured. This also results in much faster execution times and much less bugs. I just finished writing a basic PHP Socket Server (the real core), and am asking you if you can tell me what I should do different before I start expanding the core. I'm not asking about improvements such as encrypted data, authentication or multi-threading. I'm more wondering about questions like "should I maybe do it in a more object oriented way (using PHP5)?", or "is the general structure of the way the script works good, or should some things be done different?". Basically, "is this how the core of a socket server should work?" In fact, I think that if I just show you the code here many of you will immediately see room for improvements. Please be so kind to tell me. Thanks! #!/usr/bin/php -q <? // config $timelimit = 180; // amount of seconds the server should run for, 0 = run indefintely $address = $_SERVER['SERVER_ADDR']; // the server's external IP $port = 9000; // the port to listen on $backlog = SOMAXCONN; // the maximum of backlog incoming connections that will be queued for processing // configure custom PHP settings error_reporting(1); // report all errors ini_set('display_errors', 1); // display all errors set_time_limit($timelimit); // timeout after x seconds ob_implicit_flush(); // results in a flush operation after every output call //create master IPv4 based TCP socket if (!($master = socket_create(AF_INET, SOCK_STREAM, SOL_TCP))) die("Could not create master socket, error: ".socket_strerror(socket_last_error())); // set socket options (local addresses can be reused) if (!socket_set_option($master, SOL_SOCKET, SO_REUSEADDR, 1)) die("Could not set socket options, error: ".socket_strerror(socket_last_error())); // bind to socket server if (!socket_bind($master, $address, $port)) die("Could not bind to socket server, error: ".socket_strerror(socket_last_error())); // start listening if (!socket_listen($master, $backlog)) die("Could not start listening to socket, error: ".socket_strerror(socket_last_error())); //display startup information echo "[".date('Y-m-d H:i:s')."] SERVER CREATED (MAXCONN: ".SOMAXCONN.").\n"; //max connections is a kernel variable and can be adjusted with sysctl echo "[".date('Y-m-d H:i:s')."] Listening on ".$address.":".$port.".\n"; $time = time(); //set startup timestamp // init read sockets array $read_sockets = array($master); // continuously handle incoming socket messages, or close if time limit has been reached while ((!$timelimit) or (time() - $time < $timelimit)) { $changed_sockets = $read_sockets; socket_select($changed_sockets, $write = null, $except = null, null); foreach($changed_sockets as $socket) { if ($socket == $master) { if (($client = socket_accept($master)) < 0) { echo "[".date('Y-m-d H:i:s')."] Socket_accept() failed, error: ".socket_strerror(socket_last_error())."\n"; continue; } else { array_push($read_sockets, $client); echo "[".date('Y-m-d H:i:s')."] Client #".count($read_sockets)." connected (connections: ".count($read_sockets)."/".SOMAXCONN.")\n"; } } else { $data = @socket_read($socket, 1024, PHP_NORMAL_READ); //read a maximum of 1024 bytes until a new line has been sent if ($data === false) { //the client disconnected $index = array_search($socket, $read_sockets); unset($read_sockets[$index]); socket_close($socket); echo "[".date('Y-m-d H:i:s')."] Client #".($index-1)." disconnected (connections: ".count($read_sockets)."/".SOMAXCONN.")\n"; } else { if ($data = trim($data)) { //remove whitespace and continue only if the message is not empty switch ($data) { case "exit": //close connection when exit command is given $index = array_search($socket, $read_sockets); unset($read_sockets[$index]); socket_close($socket); echo "[".date('Y-m-d H:i:s')."] Client #".($index-1)." disconnected (connections: ".count($read_sockets)."/".SOMAXCONN.")\n"; break; default: //for experimental purposes, write the given data back socket_write($socket, "\n you wrote: ".$data); } } } } } } socket_close($master); //close the socket echo "[".date('Y-m-d H:i:s')."] SERVER CLOSED.\n"; ?>

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• Spam Assassin on windows

  - by ebeworld

  I just installed spam assassin and run for its sample ham mail as spamassassin sample-nonspam.txt, but it ended up marking it as a spam. What configuration am i missing to change? Result of the check is: From: Keith Dawson To: [email protected] Subject: **SPAM** TBTF ping for 2001-04-20: Reviving Date: Fri, 20 Apr 2001 16:59:58 -0400 Message-Id: X-Spam-Flag: YES X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on ebeworld-PC X-Spam-Level: **** X-Spam-Status: Yes, score=10.5 required=6.3 tests=DCC_CHECK,DIGEST_MULTIPLE, DNS_FROM_OPENWHOIS,RAZOR2_CF_RANGE_51_100,RAZOR2_CF_RANGE_E4_51_100, RAZOR2_CHECK shortcircuit=no autolearn=no version=3.2.3 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----------=_4BF17E8E.BF8E0000" This is a multi-part message in MIME format. ------------=_4BF17E8E.BF8E0000 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit This mail is probably spam. The original message has been attached intact in RFC 822 format. Content preview: -----BEGIN PGP SIGNED MESSAGE----- TBTF ping for 2001-04-20: Reviving T a s t y B i t s f r o m t h e T e c h n o l o g y F r o n t [...] Content analysis details: (10.5 points, 6.3 required) 2.4 DNS_FROM_OPENWHOIS RBL: Envelope sender listed in bl.open-whois.org. 1.5 RAZOR2_CF_RANGE_E4_51_100 Razor2 gives engine 4 confidence level above 50% [cf: 58] 2.5 RAZOR2_CHECK Listed in Razor2 (http://razor.sf.net/) 0.5 RAZOR2_CF_RANGE_51_100 Razor2 gives confidence level above 50% [cf: 58] 3.6 DCC_CHECK Listed in DCC (http://rhyolite.com/anti-spam/dcc/) 0.0 DIGEST_MULTIPLE Message hits more than one network digest check ------------=_4BF17E8E.BF8E0000 Content-Type: message/rfc822; x-spam-type=original Content-Description: original message before SpamAssassin Content-Disposition: inline Content-Transfer-Encoding: 8bit Return-Path: Delivered-To: [email protected] Received: from europe.std.com (europe.std.com [199.172.62.20]) by mail.netnoteinc.com (Postfix) with ESMTP id 392E1114061 for ; Fri, 20 Apr 2001 21:34:46 +0000 (Eire) Received: (from daemon@localhost) by europe.std.com (8.9.3/8.9.3) id RAA09630 for tbtf-outgoing; Fri, 20 Apr 2001 17:31:18 -0400 (EDT) Received: from sgi04-e.std.com (sgi04-e.std.com [199.172.62.134]) by europe.std.com (8.9.3/8.9.3) with ESMTP id RAA08749 for ; Fri, 20 Apr 2001 17:24:31 -0400 (EDT) Received: from world.std.com (world-f.std.com [199.172.62.5]) by sgi04-e.std.com (8.9.3/8.9.3) with ESMTP id RAA8278330 for ; Fri, 20 Apr 2001 17:24:31 -0400 (EDT) Received: (from dawson@localhost) by world.std.com (8.9.3/8.9.3) id RAA26781 for [email protected]; Fri, 20 Apr 2001 17:24:31 -0400 (EDT) Received: from sgi04-e.std.com (sgi04-e.std.com [199.172.62.134]) by europe.std.com (8.9.3/8.9.3) with ESMTP id RAA07541 for ; Fri, 20 Apr 2001 17:12:06 -0400 (EDT) Received: from world.std.com (world-f.std.com [199.172.62.5]) by sgi04-e.std.com (8.9.3/8.9.3) with ESMTP id RAA8416421 for ; Fri, 20 Apr 2001 17:12:06 -0400 (EDT) Received: from [208.192.102.193] (ppp0c199.std.com [208.192.102.199]) by world.std.com (8.9.3/8.9.3) with ESMTP id RAA14226 for ; Fri, 20 Apr 2001 17:12:04 -0400 (EDT) Mime-Version: 1.0 Message-Id: Date: Fri, 20 Apr 2001 16:59:58 -0400 To: [email protected] From: Keith Dawson Subject: TBTF ping for 2001-04-20: Reviving Content-Type: text/plain; charset="us-ascii" Sender: [email protected] Precedence: list Reply-To: [email protected] -----BEGIN PGP SIGNED MESSAGE----- TBTF ping for 2001-04-20: Reviving T a s t y B i t s f r o m t h e T e c h n o l o g y F r o n t Timely news of the bellwethers in computer and communications technology that will affect electronic commerce -- since 1994 Your Host: Keith Dawson ISSN: 1524-9948 This issue: < http://tbtf.com/archive/2001-04-20.html > To comment on this issue, please use this forum at Quick Topic: < http://www.quicktopic.com/tbtf/H/kQGJR2TXL6H > ________________________________________________________________________ Q u o t e O f T h e M o m e n t Even organizations that promise "privacy for their customers" rarely if ever promise "continued privacy for their former customers..." Once you cancel your account with any business, their promises of keeping the information about their customers private no longer apply... you're not a customer any longer. This is in the large category of business behaviors that individuals would consider immoral and deceptive -- and businesses know are not illegal. -- "_ankh," writing on the XNStalk mailing list ________________________________________________________________________ ..TBTF's long hiatus is drawing to a close Hail subscribers to the TBTF mailing list. Some 2,000 [1] of you have signed up since the last issue [2] was mailed on 2000-07-20. This brief note is the first of several I will send to this list to excise the dead addresses prior to resuming regular publication. While you time the contractions of the newsletter's rebirth, I in- vite you to read the TBTF Log [3] and sign up for its separate free subscription. Send "subscribe" (no quotes) with any subject to [email protected] . I mail out collected Log items on Sun- days. If you need to stay more immediately on top of breaking stories, pick up the TBTF Log's syndication file [4] or read an aggregator that does. Examples are Slashdot's Cheesy Portal [5], Userland [6], and Sitescooper [7]. If your news obsession runs even deeper and you own an SMS-capable cell phone or PDA, sign up on TBTF's WebWire- lessNow portal [8]. A free call will bring you the latest TBTF Log headline, Jargon Scout [9] find, or Siliconium [10]. Two new columnists have bloomed on TBTF since last summer: Ted By- field's roving_reporter [11] and Gary Stock's UnBlinking [12]. Late- ly Byfield has been writing in unmatched depth about ICANN, but the roving_reporter nym's roots are in commentary at the intersection of technology and culture. Stock's UnBlinking latches onto topical sub- jects and pursues them to the ends of the Net. These writers' voices are compelling and utterly distinctive. [1] http://tbtf.com/growth.html [2] http://tbtf.com/archive/2000-07-20.html [3] http://tbtf.com/blog/ [4] http://tbtf.com/tbtf.rdf [5] http://www.slashdot.org/cheesyportal.shtml [6] http://my.userland.com/ [7] http://www.sitescooper.org/ [8] http://tbtf.com/pull-wwn/ [9] http://tbtf.com/jargon-scout.html [10] http://tbtf.com/siliconia.html [11] http://tbtf.com/roving_reporter/ [12] http://tbtf.com/unblinking/ ________________________________________________________________________ S o u r c e s For a complete list of TBTF's email and Web sources, see http://tbtf.com/sources.html . ________________________________________ B e n e f a c t o r s TBTF is free. If you get value from this publication, please visit the TBTF Benefactors page < http://tbtf.com/the-benefactors.html > and consider contributing to its upkeep. ________________________________________________________________________ TBTF home and archive at http://tbtf.com/ . To unsubscribe send the message "unsubscribe" to [email protected]. TBTF is Copy- right 1994-2000 by Keith Dawson, <[email protected]>. Commercial use prohibited. For non-commercial purposes please forward, post, and link as you see fit. _______________________________________________ Keith Dawson [email protected] Layer of ash separates morning and evening milk. -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 6.5.2 for non-commercial use http://www.pgp.com iQCVAwUBOuCi3WAMawgf2iXRAQHeAQQA3YSePSQ0XzdHZUVskFDkTfpE9XS4fHQs WaT6a8qLZK9PdNcoz3zggM/Jnjdx6CJqNzxPEtxk9B2DoGll/C/60HWNPN+VujDu Xav65S0P+Px4knaQcCIeCamQJ7uGcsw+CqMpNbxWYaTYmjAfkbKH1EuLC2VRwdmD wQmwrDp70v8= =8hLB -----END PGP SIGNATURE----- ------------=_4BF17E8E.BF8E0000--

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• Java update/install via group policy

  - by Maximus

  I trying to deploy the latest Java RE version via GP, Java 7 update 9. I want to update computers that are currently running an older version of Java, a mixture of 7.6 and 7.7, some computers are running versions as old as 6.31. Some are running a mixture of both. I would also like this GP to install Java if it's not installed. Previously I used push out Java updates to users machines as Java didn't remove the old version. So when it was done the user would restart their browser or pc to start using the latest version. Not the best way to manage it as it leaves the old version installed but it worked. I've created group policies before for printer deployment, log on drive mapping scripts, but never software deployment. I've extracted the Java MSI and created a transform file to suppress reboot etc using orca. As described on this site http://ivan.dretvic.com/2011/06/how-to-package-and-deploy-java-jre-1-6-0_26-via-group-policy/. I have also tried saving the edited MSI directly and that didn't work either. But it just won't deploy. I have tried to enable logging as suggested on this site http://openofficetechnology.com/node/32, GPO logging via UserEnvDebugLevel, Software deployment logging via AppmgmtDebugLevel and MSI logging, but there is no log C:\Windows\Debug\UserMode\userenv.log being created. The windows event viewer has the following errors: Error 24/10/2012 11:44:04 AM - "Failed to apply changes to software installation settings. Software changes could not be applied. A previous log entry with details should exist. The error was : %%1612" Information 24/10/2012 11:44:04 AM - "The removal of the assignment of application Java 7 Update 9 - FB Java Transform from policy JavaDeploy succeeded." Error 24/10/2012 11:44:04 AM - "The install of application Java 7 Update 9 - FB Java Transform from policy JavaDeploy failed. The error was : %%1612" There is a log created for MSI logging and it's as below. It says the source is invalid but it exists on the share and the PC that I'm testing has permissions and I've included the recommendation here Group Policy installation failed error 1274 to enable "Always wait for the network at computer startup and logon" === Verbose logging started: 24/10/2012 11:43:59 Build type: SHIP UNICODE 5.00.7601.00 Calling process: C:\Windows\system32\svchost.exe === MSI (c) (9C:EC) [11:43:59:898]: Resetting cached policy values MSI (c) (9C:EC) [11:43:59:898]: Machine policy value 'Debug' is 3 MSI (c) (9C:EC) [11:43:59:898]: ******* RunEngine: ******* Product: {26a24ae4-039d-4ca4-87b4-2f83217009ff} ******* Action: ******* CommandLine: ********** MSI (c) (9C:EC) [11:43:59:898]: Client-side and UI is none or basic: Running entire install on the server. MSI (c) (9C:EC) [11:43:59:898]: Grabbed execution mutex. MSI (c) (9C:EC) [11:44:03:431]: Cloaking enabled. MSI (c) (9C:EC) [11:44:03:431]: Attempting to enable all disabled privileges before calling Install on Server MSI (c) (9C:EC) [11:44:03:439]: Incrementing counter to disable shutdown. Counter after increment: 0 MSI (s) (2C:70) [11:44:03:574]: Running installation inside multi-package transaction {26a24ae4-039d-4ca4-87b4-2f83217009ff} MSI (s) (2C:70) [11:44:03:574]: Grabbed execution mutex. MSI (s) (2C:7C) [11:44:03:607]: Resetting cached policy values MSI (s) (2C:7C) [11:44:03:607]: Machine policy value 'Debug' is 3 MSI (s) (2C:7C) [11:44:03:607]: ******* RunEngine: ******* Product: {26a24ae4-039d-4ca4-87b4-2f83217009ff} ******* Action: ******* CommandLine: ********** MSI (s) (2C:7C) [11:44:03:607]: Machine policy value 'DisableUserInstalls' is 0 MSI (s) (2C:7C) [11:44:03:623]: User policy value 'SearchOrder' is 'nmu' MSI (s) (2C:7C) [11:44:03:624]: User policy value 'DisableMedia' is 0 MSI (s) (2C:7C) [11:44:03:624]: Machine policy value 'AllowLockdownMedia' is 0 MSI (s) (2C:7C) [11:44:03:624]: SOURCEMGMT: Media enabled only if package is safe. MSI (s) (2C:7C) [11:44:03:624]: SOURCEMGMT: Looking for sourcelist for product {26a24ae4-039d-4ca4-87b4-2f83217009ff} MSI (s) (2C:7C) [11:44:03:624]: SOURCEMGMT: Adding {26a24ae4-039d-4ca4-87b4-2f83217009ff}; to potential sourcelist list (pcode;disk;relpath). MSI (s) (2C:7C) [11:44:03:624]: SOURCEMGMT: Now checking product {26a24ae4-039d-4ca4-87b4-2f83217009ff} MSI (s) (2C:7C) [11:44:03:624]: SOURCEMGMT: Media is enabled for product. MSI (s) (2C:7C) [11:44:03:624]: SOURCEMGMT: Attempting to use LastUsedSource from source list. MSI (s) (2C:7C) [11:44:03:624]: SOURCEMGMT: Processing net source list. MSI (s) (2C:7C) [11:44:03:624]: SOURCEMGMT: Trying source \\server\share\deployment\Java\stable\x32\. MSI (s) (2C:7C) [11:44:03:650]: Note: 1: 2303 2: 5 3: \\server\share\ MSI (s) (2C:7C) [11:44:03:650]: Note: 1: 1325 2: deployment MSI (s) (2C:7C) [11:44:03:650]: ConnectToSource: CreatePath/CreateFilePath failed with: -2147483648 1325 -2147483648 MSI (s) (2C:7C) [11:44:03:650]: ConnectToSource (con't): CreatePath/CreateFilePath failed with: -2147483648 -2147483648 MSI (s) (2C:7C) [11:44:03:650]: SOURCEMGMT: net source '\\server\share\deployment\Java\stable\x32\' is invalid. MSI (s) (2C:7C) [11:44:03:650]: Note: 1: 1706 2: -2147483647 3: jre1.7.0_09.msi MSI (s) (2C:7C) [11:44:03:650]: SOURCEMGMT: Processing media source list. MSI (s) (2C:7C) [11:44:04:668]: Note: 1: 2203 2: 3: -2147287037 MSI (s) (2C:7C) [11:44:04:668]: SOURCEMGMT: Source is invalid due to missing/inaccessible package. MSI (s) (2C:7C) [11:44:04:668]: Note: 1: 1706 2: -2147483647 3: jre1.7.0_09.msi MSI (s) (2C:7C) [11:44:04:668]: SOURCEMGMT: Processing URL source list. MSI (s) (2C:7C) [11:44:04:668]: Note: 1: 1402 2: UNKNOWN\URL 3: 2 MSI (s) (2C:7C) [11:44:04:668]: Note: 1: 1706 2: -2147483647 3: jre1.7.0_09.msi MSI (s) (2C:7C) [11:44:04:668]: Note: 1: 1706 2: 3: jre1.7.0_09.msi MSI (s) (2C:7C) [11:44:04:668]: SOURCEMGMT: Failed to resolve source MSI (s) (2C:7C) [11:44:04:668]: MainEngineThread is returning 1612 MSI (s) (2C:70) [11:44:04:670]: User policy value 'DisableRollback' is 0 MSI (s) (2C:70) [11:44:04:670]: Machine policy value 'DisableRollback' is 0 MSI (s) (2C:70) [11:44:04:670]: Incrementing counter to disable shutdown. Counter after increment: 0 MSI (s) (2C:70) [11:44:04:670]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\Rollback\Scripts 3: 2 MSI (s) (2C:70) [11:44:04:671]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\Rollback\Scripts 3: 2 MSI (s) (2C:70) [11:44:04:671]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\InProgress 3: 2 MSI (s) (2C:70) [11:44:04:671]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\InProgress 3: 2 MSI (s) (2C:70) [11:44:04:671]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied. Counter after decrement: -1 MSI (s) (2C:70) [11:44:04:671]: Restoring environment variables MSI (c) (9C:EC) [11:44:04:675]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied. Counter after decrement: -1 MSI (c) (9C:EC) [11:44:04:675]: MainEngineThread is returning 1612 === Verbose logging stopped: 24/10/2012 11:44:04 === I'm not sure what my next approach should be. Any help would be much appreciated. Thanks.

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• Outbound traffic being blocked for MIP/VIPped servers (Juniper SSG5)

  - by Mark S. Rasmussen

  As we've been having some problems with sporadic packet loss, I've been preparing a replacement router (also an SSG5) for our current Juniper SSG5. I've setup the new SSG5 identically to the old one. We have a /29 IP range with a single IP setup as a MIP map to a server and two others being used for VIP maps. Each VIP/MIP is accompanied by relevant policies. Long story short - we tried connected the new SSG5 and some things were not working as they should. No problem, I just reconnected the old one. However, some things are still broken, even when I reconnected the old one. I fear I may have inadvertently changed some settings while browsing through old settings in my attempt to reconfigure the new SSG5 unit. All inbound traffic seems to work as expected. However, the 192.168.2.202 server can't initiate any outbound connections. It works perfectly on the local network, but any pings or DNS lookups to external IP's fail. The MIP & VIP map to it works perfectly - I can access it through HTTP and RDP without issues. Any tips on what to debug, or where I've messed up my config? I've attached the full config here (with anonymized IPs): set clock timezone 1 set vrouter trust-vr sharable set vrouter "untrust-vr" exit set vrouter "trust-vr" unset auto-route-export exit set service "MyVOIP_UDP4569" protocol udp src-port 0-65535 dst-port 4569-4569 set service "MyVOIP_TCP22" protocol tcp src-port 0-65535 dst-port 22-22 set service "MyRDP" protocol tcp src-port 0-65535 dst-port 3389-3389 set service "MyRsync" protocol tcp src-port 0-65535 dst-port 873-873 set service "NZ_FTP" protocol tcp src-port 0-65535 dst-port 40000-41000 set service "NZ_FTP" + tcp src-port 0-65535 dst-port 21-21 set service "PPTP-VPN" protocol 47 src-port 2048-2048 dst-port 2048-2048 set service "PPTP-VPN" + tcp src-port 1024-65535 dst-port 1723-1723 set service "NZ_FMS_1935" protocol tcp src-port 0-65535 dst-port 1935-1935 set service "NZ_FMS_1935" + udp src-port 0-65535 dst-port 1935-1935 set service "NZ_FMS_8080" protocol tcp src-port 0-65535 dst-port 8080-8080 set service "CrashPlan Server" protocol tcp src-port 0-65535 dst-port 4280-4280 set service "CrashPlan Console" protocol tcp src-port 0-65535 dst-port 4282-4282 unset alg sip enable set auth-server "Local" id 0 set auth-server "Local" server-name "Local" set auth default auth server "Local" set auth radius accounting port 1646 set admin auth timeout 10 set admin auth server "Local" set admin format dos set vip multi-port set zone "Trust" vrouter "trust-vr" set zone "Untrust" vrouter "trust-vr" set zone "DMZ" vrouter "trust-vr" set zone "VLAN" vrouter "trust-vr" set zone "Untrust-Tun" vrouter "trust-vr" set zone "Trust" tcp-rst set zone "Untrust" block unset zone "Untrust" tcp-rst set zone "DMZ" tcp-rst set zone "VLAN" block unset zone "VLAN" tcp-rst set zone "Untrust" screen tear-drop set zone "Untrust" screen syn-flood set zone "Untrust" screen ping-death set zone "Untrust" screen ip-filter-src set zone "Untrust" screen land set zone "V1-Untrust" screen tear-drop set zone "V1-Untrust" screen syn-flood set zone "V1-Untrust" screen ping-death set zone "V1-Untrust" screen ip-filter-src set zone "V1-Untrust" screen land set interface ethernet0/0 phy full 100mb set interface ethernet0/3 phy full 100mb set interface ethernet0/4 phy full 100mb set interface ethernet0/5 phy full 100mb set interface ethernet0/6 phy full 100mb set interface "ethernet0/0" zone "Untrust" set interface "ethernet0/1" zone "Null" set interface "bgroup0" zone "Trust" set interface "bgroup1" zone "Trust" set interface "bgroup2" zone "Trust" set interface bgroup2 port ethernet0/2 set interface bgroup0 port ethernet0/3 set interface bgroup0 port ethernet0/4 set interface bgroup1 port ethernet0/5 set interface bgroup1 port ethernet0/6 unset interface vlan1 ip set interface ethernet0/0 ip 212.242.193.18/29 set interface ethernet0/0 route set interface bgroup0 ip 192.168.1.1/24 set interface bgroup0 nat set interface bgroup1 ip 192.168.2.1/24 set interface bgroup1 nat set interface bgroup2 ip 192.168.3.1/24 set interface bgroup2 nat set interface ethernet0/0 gateway 212.242.193.17 unset interface vlan1 bypass-others-ipsec unset interface vlan1 bypass-non-ip set interface ethernet0/0 ip manageable set interface bgroup0 ip manageable set interface bgroup1 ip manageable set interface bgroup2 ip manageable set interface bgroup0 manage mtrace unset interface bgroup1 manage ssh unset interface bgroup1 manage telnet unset interface bgroup1 manage snmp unset interface bgroup1 manage ssl unset interface bgroup1 manage web unset interface bgroup2 manage ssh unset interface bgroup2 manage telnet unset interface bgroup2 manage snmp unset interface bgroup2 manage ssl unset interface bgroup2 manage web set interface ethernet0/0 vip 212.242.193.19 2048 "PPTP-VPN" 192.168.1.131 set interface ethernet0/0 vip 212.242.193.19 + 4280 "CrashPlan Server" 192.168.1.131 set interface ethernet0/0 vip 212.242.193.19 + 4282 "CrashPlan Console" 192.168.1.131 set interface ethernet0/0 vip 212.242.193.22 22 "MyVOIP_TCP22" 192.168.2.127 set interface ethernet0/0 vip 212.242.193.22 + 4569 "MyVOIP_UDP4569" 192.168.2.127 set interface ethernet0/0 vip 212.242.193.22 + 3389 "MyRDP" 192.168.2.202 set interface ethernet0/0 vip 212.242.193.22 + 873 "MyRsync" 192.168.2.201 set interface ethernet0/0 vip 212.242.193.22 + 80 "HTTP" 192.168.2.202 set interface ethernet0/0 vip 212.242.193.22 + 2048 "PPTP-VPN" 192.168.2.201 set interface ethernet0/0 vip 212.242.193.22 + 8080 "NZ_FMS_8080" 192.168.2.216 set interface ethernet0/0 vip 212.242.193.22 + 1935 "NZ_FMS_1935" 192.168.2.216 set interface bgroup0 dhcp server service set interface bgroup1 dhcp server service set interface bgroup2 dhcp server service set interface bgroup0 dhcp server auto set interface bgroup1 dhcp server auto set interface bgroup2 dhcp server auto set interface bgroup0 dhcp server option domainname iplan set interface bgroup0 dhcp server option dns1 192.168.1.131 set interface bgroup1 dhcp server option domainname nzlan set interface bgroup1 dhcp server option dns1 192.168.2.202 set interface bgroup2 dhcp server option dns1 8.8.8.8 set interface bgroup2 dhcp server option wins1 8.8.4.4 set interface bgroup0 dhcp server ip 192.168.1.2 to 192.168.1.116 set interface bgroup1 dhcp server ip 192.168.2.2 to 192.168.2.116 set interface bgroup2 dhcp server ip 192.168.3.2 to 192.168.3.126 unset interface bgroup0 dhcp server config next-server-ip unset interface bgroup1 dhcp server config next-server-ip unset interface bgroup2 dhcp server config next-server-ip set interface "ethernet0/0" mip 212.242.193.21 host 192.168.2.202 netmask 255.255.255.255 vr "trust-vr" set interface "serial0/0" modem settings "USR" init "AT&F" set interface "serial0/0" modem settings "USR" active set interface "serial0/0" modem speed 115200 set interface "serial0/0" modem retry 3 set interface "serial0/0" modem interval 10 set interface "serial0/0" modem idle-time 10 set pak-poll p1queue pak-threshold 96 set pak-poll p2queue pak-threshold 32 set flow tcp-mss unset flow tcp-syn-check set dns host dns1 0.0.0.0 set dns host dns2 0.0.0.0 set dns host dns3 0.0.0.0 set address "Trust" "192.168.1.0/24" 192.168.1.0 255.255.255.0 set address "Trust" "192.168.2.0/24" 192.168.2.0 255.255.255.0 set address "Trust" "192.168.3.0/24" 192.168.3.0 255.255.255.0 set ike respond-bad-spi 1 unset ike ikeid-enumeration unset ike dos-protection unset ipsec access-session enable set ipsec access-session maximum 5000 set ipsec access-session upper-threshold 0 set ipsec access-session lower-threshold 0 set ipsec access-session dead-p2-sa-timeout 0 unset ipsec access-session log-error unset ipsec access-session info-exch-connected unset ipsec access-session use-error-log set l2tp default ppp-auth chap set url protocol websense exit set policy id 1 from "Trust" to "Untrust" "Any" "Any" "ANY" permit traffic set policy id 1 exit set policy id 2 from "Untrust" to "Trust" "Any" "VIP(212.242.193.19)" "PPTP-VPN" permit traffic set policy id 2 exit set policy id 3 from "Untrust" to "Trust" "Any" "VIP(212.242.193.22)" "HTTP" permit traffic priority 0 set policy id 3 set service "MyRDP" set service "MyRsync" set service "MyVOIP_TCP22" set service "MyVOIP_UDP4569" exit set policy id 6 from "Trust" to "Trust" "192.168.1.0/24" "192.168.2.0/24" "ANY" deny set policy id 6 exit set policy id 7 from "Trust" to "Trust" "192.168.2.0/24" "192.168.1.0/24" "ANY" deny set policy id 7 exit set policy id 8 from "Trust" to "Trust" "192.168.3.0/24" "192.168.1.0/24" "ANY" deny set policy id 8 exit set policy id 9 from "Trust" to "Trust" "192.168.3.0/24" "192.168.2.0/24" "ANY" deny set policy id 9 exit set policy id 10 from "Untrust" to "Trust" "Any" "MIP(212.242.193.21)" "NZ_FTP" permit set policy id 10 exit set policy id 11 from "Untrust" to "Trust" "Any" "VIP(212.242.193.22)" "PPTP-VPN" permit set policy id 11 exit set policy id 12 from "Untrust" to "Trust" "Any" "VIP(212.242.193.22)" "NZ_FMS_1935" permit set policy id 12 set service "NZ_FMS_8080" exit set policy id 13 from "Untrust" to "Trust" "Any" "VIP(212.242.193.19)" "CrashPlan Console" permit set policy id 13 set service "CrashPlan Server" exit set nsmgmt bulkcli reboot-timeout 60 set ssh version v2 set config lock timeout 5 set snmp port listen 161 set snmp port trap 162 set vrouter "untrust-vr" exit set vrouter "trust-vr" unset add-default-route exit set vrouter "untrust-vr" exit set vrouter "trust-vr" exit

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• Allowing connections initiated from outside

  - by Mark S. Rasmussen

  I've got an old Juniper SSG5 running ScreenOS 5.4.0r6.0. Once a day, more or less, it'll start randomly dropping packets at a rate of ~5-10%. We currently solve this issue by simply rebooting the unit, after which it resumes working in perfect condition. As this error has started appearing randomly, without any configuration or hardware changes, I'm assuming I've got an aging unit about to fail. As such, I've got a replacement SSG5 running ScreenOS 6.0. I've dumped the config on the 5.4 and imported it into a clean 6.0, and it seems to gladly accept it, and all my configuration seems to be A-OK. However, upon connecting the new unit, all outside-initiated connections seem to be blocked. If I browse our external IP from the inside, everything works perfectly, and it's not just port 80, SSH, Crashplan - all of our policies route correctly. All normal networking, initiated from the inside, work perfectly as well. If on the other hand I browse our external IP from the outside, everything is blocked. Barring differences between ScreenOS 5.4 and 6.0, the config is identical. Is there a setting somewhere that defines whether outside/inside initiated connections are allowed? unset key protection enable set clock timezone 1 set vrouter trust-vr sharable set vrouter "untrust-vr" exit set vrouter "trust-vr" unset auto-route-export exit set service "MyVOIP_UDP4569" protocol udp src-port 0-65535 dst-port 4569-4569 set service "MyVOIP_TCP22" protocol tcp src-port 0-65535 dst-port 22-22 set service "MyRDP" protocol tcp src-port 0-65535 dst-port 3389-3389 set service "MyRsync" protocol tcp src-port 0-65535 dst-port 873-873 set service "NZ_FTP" protocol tcp src-port 0-65535 dst-port 40000-41000 set service "NZ_FTP" + tcp src-port 0-65535 dst-port 21-21 set service "PPTP-VPN" protocol 47 src-port 2048-2048 dst-port 2048-2048 set service "PPTP-VPN" + tcp src-port 1024-65535 dst-port 1723-1723 set service "NZ_FMS_1935" protocol tcp src-port 0-65535 dst-port 1935-1935 set service "NZ_FMS_1935" + udp src-port 0-65535 dst-port 1935-1935 set service "NZ_FMS_8080" protocol tcp src-port 0-65535 dst-port 8080-8080 set service "CrashPlan Server" protocol tcp src-port 0-65535 dst-port 4280-4280 set service "CrashPlan Console" protocol tcp src-port 0-65535 dst-port 4282-4282 unset alg sip enable set alg appleichat enable unset alg appleichat re-assembly enable set alg sctp enable set auth-server "Local" id 0 set auth-server "Local" server-name "Local" set auth default auth server "Local" set auth radius accounting port 1646 set admin name "netscreen" set admin password "XXX" set admin auth web timeout 10 set admin auth dial-in timeout 3 set admin auth server "Local" set admin format dos set vip multi-port set zone "Trust" vrouter "trust-vr" set zone "Untrust" vrouter "trust-vr" set zone "DMZ" vrouter "trust-vr" set zone "VLAN" vrouter "trust-vr" set zone "Untrust-Tun" vrouter "trust-vr" set zone "Trust" tcp-rst set zone "Untrust" block unset zone "Untrust" tcp-rst set zone "MGT" block unset zone "V1-Trust" tcp-rst unset zone "V1-Untrust" tcp-rst set zone "DMZ" tcp-rst unset zone "V1-DMZ" tcp-rst unset zone "VLAN" tcp-rst set zone "Untrust" screen tear-drop set zone "Untrust" screen syn-flood set zone "Untrust" screen ping-death set zone "Untrust" screen ip-filter-src set zone "Untrust" screen land set zone "V1-Untrust" screen tear-drop set zone "V1-Untrust" screen syn-flood set zone "V1-Untrust" screen ping-death set zone "V1-Untrust" screen ip-filter-src set zone "V1-Untrust" screen land set interface ethernet0/0 phy full 100mb set interface ethernet0/3 phy full 100mb set interface ethernet0/4 phy full 100mb set interface ethernet0/5 phy full 100mb set interface ethernet0/6 phy full 100mb set interface "ethernet0/0" zone "Untrust" set interface "ethernet0/1" zone "Null" set interface "bgroup0" zone "Trust" set interface "bgroup1" zone "Trust" set interface "bgroup2" zone "Trust" set interface bgroup2 port ethernet0/2 set interface bgroup0 port ethernet0/3 set interface bgroup0 port ethernet0/4 set interface bgroup1 port ethernet0/5 set interface bgroup1 port ethernet0/6 unset interface vlan1 ip set interface ethernet0/0 ip 215.173.182.18/29 set interface ethernet0/0 route set interface bgroup0 ip 192.168.1.1/24 set interface bgroup0 nat set interface bgroup1 ip 192.168.2.1/24 set interface bgroup1 nat set interface bgroup2 ip 192.168.3.1/24 set interface bgroup2 nat set interface ethernet0/0 gateway 215.173.182.17 unset interface vlan1 bypass-others-ipsec unset interface vlan1 bypass-non-ip set interface ethernet0/0 ip manageable set interface bgroup0 ip manageable set interface bgroup1 ip manageable set interface bgroup2 ip manageable set interface bgroup0 manage mtrace unset interface bgroup1 manage ssh unset interface bgroup1 manage telnet unset interface bgroup1 manage snmp unset interface bgroup1 manage ssl unset interface bgroup1 manage web unset interface bgroup2 manage ssh unset interface bgroup2 manage telnet unset interface bgroup2 manage snmp unset interface bgroup2 manage ssl unset interface bgroup2 manage web set interface ethernet0/0 vip 215.173.182.19 2048 "PPTP-VPN" 192.168.1.131 set interface ethernet0/0 vip 215.173.182.19 + 4280 "CrashPlan Server" 192.168.1.131 set interface ethernet0/0 vip 215.173.182.19 + 4282 "CrashPlan Console" 192.168.1.131 set interface ethernet0/0 vip 215.173.182.22 22 "MyVOIP_TCP22" 192.168.2.127 set interface ethernet0/0 vip 215.173.182.22 + 4569 "MyVOIP_UDP4569" 192.168.2.127 set interface ethernet0/0 vip 215.173.182.22 + 3389 "MyRDP" 192.168.2.202 set interface ethernet0/0 vip 215.173.182.22 + 873 "MyRsync" 192.168.2.201 set interface ethernet0/0 vip 215.173.182.22 + 80 "HTTP" 192.168.2.202 set interface ethernet0/0 vip 215.173.182.22 + 2048 "PPTP-VPN" 192.168.2.201 set interface ethernet0/0 vip 215.173.182.22 + 8080 "NZ_FMS_8080" 192.168.2.216 set interface ethernet0/0 vip 215.173.182.22 + 1935 "NZ_FMS_1935" 192.168.2.216 set interface bgroup0 dhcp server service set interface bgroup1 dhcp server service set interface bgroup2 dhcp server service set interface bgroup0 dhcp server auto set interface bgroup1 dhcp server auto set interface bgroup2 dhcp server auto set interface bgroup0 dhcp server option domainname companyalan set interface bgroup0 dhcp server option dns1 192.168.1.131 set interface bgroup1 dhcp server option domainname companyblan set interface bgroup1 dhcp server option dns1 192.168.2.202 set interface bgroup2 dhcp server option dns1 8.8.8.8 set interface bgroup2 dhcp server option wins1 8.8.4.4 set interface bgroup0 dhcp server ip 192.168.1.2 to 192.168.1.116 set interface bgroup1 dhcp server ip 192.168.2.2 to 192.168.2.116 set interface bgroup2 dhcp server ip 192.168.3.2 to 192.168.3.126 unset interface bgroup0 dhcp server config next-server-ip unset interface bgroup1 dhcp server config next-server-ip unset interface bgroup2 dhcp server config next-server-ip set interface "ethernet0/0" mip 215.173.182.21 host 192.168.2.202 netmask 255.255.255.255 vr "trust-vr" set interface "serial0/0" modem settings "USR" init "AT&F" set interface "serial0/0" modem settings "USR" active set interface "serial0/0" modem speed 115200 set interface "serial0/0" modem retry 3 set interface "serial0/0" modem interval 10 set interface "serial0/0" modem idle-time 10 set flow tcp-mss unset flow tcp-syn-check unset flow tcp-syn-bit-check set flow reverse-route clear-text prefer set flow reverse-route tunnel always set pki authority default scep mode "auto" set pki x509 default cert-path partial set pki x509 dn name "[email protected]" set dns host dns1 0.0.0.0 set dns host dns2 0.0.0.0 set dns host dns3 0.0.0.0 set address "Trust" "192.168.1.0/24" 192.168.1.0 255.255.255.0 set address "Trust" "192.168.2.0/24" 192.168.2.0 255.255.255.0 set address "Trust" "192.168.3.0/24" 192.168.3.0 255.255.255.0 set crypto-policy exit set ike respond-bad-spi 1 set ike ikev2 ike-sa-soft-lifetime 60 unset ike ikeid-enumeration unset ike dos-protection unset ipsec access-session enable set ipsec access-session maximum 5000 set ipsec access-session upper-threshold 0 set ipsec access-session lower-threshold 0 set ipsec access-session dead-p2-sa-timeout 0 unset ipsec access-session log-error unset ipsec access-session info-exch-connected unset ipsec access-session use-error-log set vrouter "untrust-vr" exit set vrouter "trust-vr" exit set l2tp default ppp-auth chap set url protocol websense exit set policy id 1 from "Trust" to "Untrust" "Any" "Any" "ANY" permit set policy id 1 exit set policy id 2 from "Untrust" to "Trust" "Any" "VIP(215.173.182.19)" "PPTP-VPN" permit traffic set policy id 2 exit set policy id 3 from "Untrust" to "Trust" "Any" "VIP(215.173.182.22)" "HTTP" permit log set policy id 3 set service "MyRDP" set service "MyRsync" set service "MyVOIP_TCP22" set service "MyVOIP_UDP4569" exit set policy id 6 from "Trust" to "Trust" "192.168.1.0/24" "192.168.2.0/24" "ANY" deny set policy id 6 exit set policy id 7 from "Trust" to "Trust" "192.168.2.0/24" "192.168.1.0/24" "ANY" deny set policy id 7 exit set policy id 8 from "Trust" to "Trust" "192.168.3.0/24" "192.168.1.0/24" "ANY" deny set policy id 8 exit set policy id 9 from "Trust" to "Trust" "192.168.3.0/24" "192.168.2.0/24" "ANY" deny set policy id 9 exit set policy id 10 from "Untrust" to "Trust" "Any" "MIP(215.173.182.21)" "NZ_FTP" permit set policy id 10 exit set policy id 11 from "Untrust" to "Trust" "Any" "VIP(215.173.182.22)" "PPTP-VPN" permit set policy id 11 exit set policy id 12 from "Untrust" to "Trust" "Any" "VIP(215.173.182.22)" "NZ_FMS_1935" permit set policy id 12 set service "NZ_FMS_8080" exit set policy id 13 from "Untrust" to "Trust" "Any" "VIP(215.173.182.19)" "CrashPlan Console" permit set policy id 13 set service "CrashPlan Server" exit set nsmgmt bulkcli reboot-timeout 60 set ssh version v2 set config lock timeout 5 unset license-key auto-update set telnet client enable set snmp port listen 161 set snmp port trap 162 set vrouter "untrust-vr" exit set vrouter "trust-vr" unset add-default-route exit set vrouter "untrust-vr" exit set vrouter "trust-vr" exit Note that I've previously posted a similar question (pertaining to the same device & replacement, but ultimately caused by a malfunctioning switch, and thus clouding the current issue): Outbound traffic being blocked for MIP/VIPped servers (Juniper SSG5)

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• Installing Oracle 11gR2 on RHEL 6.2

  - by Chris

  Hello all I'm having some difficulty installing Oracle 11gR2 on RHEL 6.2 I have compiled a giant list of every single step I have taken so far I installed RHEL 6.2 on VMWARE it did it's easy install automatically I Selected 4gb of memory Selected max size of 80Gb Selected 2 processors Sorry for the bad styling copy paste isn't working correctly The version of oracle i downloaded is Linux x86-64 11.2.0.1 I am installing this on a local machine NOT a remote machine I followed the following documentation http://docs.oracle.com/cd/E11882_01/install.112/e24326/toc.htm I bolded the steps which I was least sure about from my research Easy installed with RHEL 6.2 for VMWARE Registered with red hat so I can get updates Reinstalled vmware-tools by pressing enter at every choice Sudo yum update at the end something about GPG key selected y then y Checked Memory Requirements grep MemTotal /proc/meminfo MemTotal: 3921368 kb uname -m x86_64 grep SwapTotal /proc/meminfo SwapTotal: 6160376 kb free total used free shared buffers cached Mem: 3921368 2032012 1889356 0 76216 1533268 -/+ buffers/cache: 422528 3498840 Swap: 6160376 0 6160376 df -h /dev/shm Filesystem Size Used Avail Use% Mounted on tmpfs 1.9G 276K 1.9G 1% /dev/shm df -h /tmp Filesystem Size Used Avail Use% Mounted on /dev/sda2 73G 2.7G 67G 4% / df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 73G 2.7G 67G 4% / tmpfs 1.9G 276K 1.9G 1% /dev/shm /dev/sda1 291M 58M 219M 21% /boot All looked fine to me except maybe for swap? Software Requirements cat /proc/version Linux version 2.6.32-220.el6.x86_64 ([email protected]) (gcc version 4.4.5 20110214 (Red Hat 4.4.5-6) (GCC) ) #1 SMP Wed Nov 9 08:03:13 EST 2011 uname -r 2.6.32-220.el6.x86_64 (same as above but whatever) According to the tutorial should be On Red Hat Enterprise Linux 6 2.6.32-71.el6.x86_64 or later These are the versions of software I have installed binutils-2.20.51.0.2-5.28.el6.x86_64 compat-libcap1-1.10-1.x86_64 compat-libstdc++-33-3.2.3-69.el6.x86_64 compat-libstdc++-33.i686 0:3.2.3-69.el6 gcc-4.4.6-3.el6.x86_64 gcc-c++.x86_64 0:4.4.6-3.el6 glibc-2.12-1.47.el6_2.12.x86_64 glibc-2.12-1.47.el6_2.12.i686 glibc-devel-2.12-1.47.el6_2.12.x86_64 glibc-devel.i686 0:2.12-1.47.el6_2.12 ksh.x86_64 0:20100621-12.el6_2.1 libgcc-4.4.6-3.el6.x86_64 libgcc-4.4.6-3.el6.i686 libstdc++-4.4.6-3.el6.x86_64 libstdc++.i686 0:4.4.6-3.el6 libstdc++-devel.i686 0:4.4.6-3.el6 libstdc++-devel-4.4.6-3.el6.x86_64 libaio-0.3.107-10.el6.x86_64 libaio-0.3.107-10.el6.i686 libaio-devel-0.3.107-10.el6.x86_64 libaio-devel-0.3.107-10.el6.i686 make-3.81-19.el6.x86_64 sysstat-9.0.4-18.el6.x86_64 unixODBC-2.2.14-11.el6.x86_64 unixODBC-devel-2.2.14-11.el6.x86_64 unixODBC-devel-2.2.14-11.el6.i686 unixODBC-2.2.14-11.el6.i686 8. Probably screwed up here or step 9 /usr/sbin/groupadd oinstall /usr/sbin/groupadd dba(not sure why this isn't in the tutorial) /usr/sbin/useradd -g oinstall -G dba oracle passwd oracle /sbin/sysctl -a | grep sem Xkernel.sem = 250 32000 32 128 /sbin/sysctl -a | grep shm kernel.shmmax = 68719476736 kernel.shmall = 4294967296 kernel.shmmni = 4096 vm.hugetlb_shm_group = 0 /sbin/sysctl -a | grep file-max Xfs.file-max = 384629 /sbin/sysctl -a | grep ip_local_port_range Xnet.ipv4.ip_local_port_range = 32768 61000 /sbin/sysctl -a | grep rmem_default Xnet.core.rmem_default = 124928 /sbin/sysctl -a | grep rmem_max Xnet.core.rmem_max = 131071 /sbin/sysctl -a | grep wmem_max Xnet.core.wmem_max = 131071 /sbin/sysctl -a | grep wmem_default Xnet.core.wmem_default = 124928 Here is my sysctl.conf file I only added the items that were bigger: Kernel sysctl configuration file for Red Hat Linux # For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and sysctl.conf(5) for more details. Controls IP packet forwarding net.ipv4.ip_forward = 0 Controls source route verification net.ipv4.conf.default.rp_filter = 1 Do not accept source routing net.ipv4.conf.default.accept_source_route = 0 Controls the System Request debugging functionality of the kernel kernel.sysrq = 0 Controls whether core dumps will append the PID to the core filename. Useful for debugging multi-threaded applications. kernel.core_uses_pid = 1 Controls the use of TCP syncookies net.ipv4.tcp_syncookies = 1 Disable netfilter on bridges. net.bridge.bridge-nf-call-ip6tables = 0 net.bridge.bridge-nf-call-iptables = 0 net.bridge.bridge-nf-call-arptables = 0 Controls the maximum size of a message, in bytes kernel.msgmnb = 65536 Controls the default maxmimum size of a mesage queue kernel.msgmax = 65536 Controls the maximum shared segment size, in bytes kernel.shmmax = 68719476736 Controls the maximum number of shared memory segments, in pages kernel.shmall = 4294967296 fs.aio-max-nr = 1048576 fs.file-max = 6815744 kernel.sem = 250 32000 100 128 net.ipv4.ip_local_port_range = 9000 65500 net.core.rmem_default = 262144 net.core.rmem_max = 4194304 net.core.wmem_default = 262144 net.core.wmem_max = 1048576 /sbin/sysctl -p net.ipv4.ip_forward = 0 net.ipv4.conf.default.rp_filter = 1 net.ipv4.conf.default.accept_source_route = 0 kernel.sysrq = 0 kernel.core_uses_pid = 1 net.ipv4.tcp_syncookies = 1 error: "net.bridge.bridge-nf-call-ip6tables" is an unknown key error: "net.bridge.bridge-nf-call-iptables" is an unknown key error: "net.bridge.bridge-nf-call-arptables" is an unknown key kernel.msgmnb = 65536 kernel.msgmax = 65536 kernel.shmmax = 68719476736 kernel.shmall = 4294967296 fs.aio-max-nr = 1048576 fs.file-max = 6815744 kernel.sem = 250 32000 100 128 net.ipv4.ip_local_port_range = 9000 65500 net.core.rmem_default = 262144 net.core.rmem_max = 4194304 net.core.wmem_default = 262144 net.core.wmem_max = 1048576 su - oracle ulimit -Sn 1024 ulimit -Hn 1024 ulimit -Su 1024 ulimit -Hu 30482 ulimit -Su 1024 ulimit -Ss 10240 ulimit -Hs unlimited su - nano /etc/security/limits.conf *added to the end of the file * oracle soft nproc 2047 oracle hard nproc 16384 oracle soft nofile 1024 oracle hard nofile 65536 oracle soft stack 10240 exit exit su - mkdir -p /app/ chown -R oracle:oinstall /app/ chmod -R 775 /app/ 9. THIS IS PROBABLY WHERE I MESSED UP I then exited out of the root account so now I'm back in my account chris then I su - oracle echo $SHELL /bin/bash umask 0022 (so it should be set already to what is neccesary) Also from what I have read I do not need to set the DISPLAY variable because I'm installing this on the localhost I then opened the .bash_profile of the oracle and changed it to the following .bash_profile Get the aliases and functions if [ -f ~/.bashrc ]; then . ~/.bashrc fi User specific environment and startup programs PATH=$PATH:$HOME/bin; export PATH ORACLE_BASE=/app/oracle ORACLE_SID=orcl export ORACLE_BASE ORACLE_SID I then shutdown the virtual machine shared my desktop folder from my windows 7 then turned back on the virtual machine logged in as chris opened up a terminal then: su - for some reason the shared folder didn't appear so I reinstalled vmware tools again and restarted then same as before su - cp -R linux_oracle/database /db; chown -R oracle:oinstall /db; chmod -R 775 /db; ll /db drwxrwxr-x. 8 oracle oinstall 4096 Jun 5 06:20 database exit su - oracle cd /db/database ./runInstaller AND FINALLY THE INFAMOUS JAVA:132 ERROR MESSAGE Starting Oracle Universal Installer... Checking Temp space: must be greater than 80 MB. Actual 65646 MB Passed Checking swap space: must be greater than 150 MB. Actual 6015 MB Passed Checking monitor: must be configured to display at least 256 colors. Actual 16777216 Passed Preparing to launch Oracle Universal Installer from /tmp/OraInstall2012-06-05_06-47-12AM. Please wait ...[oracle@localhost database]$ Exception in thread "main" java.lang.UnsatisfiedLinkError: /tmp/OraInstall2012-06-05_06-47-12AM/jdk/jre/lib/i386/xawt/libmawt.so: libXext.so.6: cannot open shared object file: No such file or directory at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1751) at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1647) at java.lang.Runtime.load0(Runtime.java:769) at java.lang.System.load(System.java:968) at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1751) at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1668) at java.lang.Runtime.loadLibrary0(Runtime.java:822) at java.lang.System.loadLibrary(System.java:993) at sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java:50) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Toolkit.loadLibraries(Toolkit.java:1509) at java.awt.Toolkit.(Toolkit.java:1530) at com.jgoodies.looks.LookUtils.isLowResolution(Unknown Source) at com.jgoodies.looks.LookUtils.(Unknown Source) at com.jgoodies.looks.plastic.PlasticLookAndFeel.(PlasticLookAndFeel.java:122) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:242) at javax.swing.SwingUtilities.loadSystemClass(SwingUtilities.java:1783) at javax.swing.UIManager.setLookAndFeel(UIManager.java:480) at oracle.install.commons.util.Application.startup(Application.java:758) at oracle.install.commons.flow.FlowApplication.startup(FlowApplication.java:164) at oracle.install.commons.flow.FlowApplication.startup(FlowApplication.java:181) at oracle.install.commons.base.driver.common.Installer.startup(Installer.java:265) at oracle.install.ivw.db.driver.DBInstaller.startup(DBInstaller.java:114) at oracle.install.ivw.db.driver.DBInstaller.main(DBInstaller.java:132)

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