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• ArchBeat Link-o-Rama Top 10 for November 2012

  - by Bob Rhubart

  Every day ArchBeat searches the web for content created by and for community members, and then shares that content via social media. Here's the list of the Top 10 most popular items posted on the OTN ArchBeat Facebook Page for November 2012. One-Stop Shop for Oracle Webcasts Webcasts can be a great way to get information about Oracle products without having to go cross-eyed reading yet another document off your computer screen. Oracle's new Webcast Center offers selectable filtering to make it easy to get to the information you want. Yes, you have to register to gain access, but that process is quick, and with over 200 webcasts to choose from you know you'll find useful content. OAM/OVD JVM Tuning Vinay from the Oracle Fusion Middleware Architecture Group (otherwise known as the A-Team) shares a process for analyzing and improving performance in Oracle Virtual Directory and Oracle Access Manager. White Paper: Oracle Exalogic Elastic Cloud: Advanced I/O Virtualization Architecture for Consolidating High-Performance Workloads This new white paper by Adam Hawley (with contributions from Yoav Eilat) describes in great detail the incorporation into Oracle Exalogic of virtualized InfiniBand I/O interconnects using Single Root I/O Virtualization (SR-IOV) technology. Architected Systems: "If you don't develop an architecture, you will get one anyway..." "Can you build a system without taking care of architecture?," asks Manuel Ricca. "You certainly can. But inevitably the system will be unbalanced, neglecting the interests of key stakeholders, and problems will soon emerge." Backup and Recovery of an Exalogic vServer via rsync "On Exalogic a vServer will consist of a number of resources from the underlying machine," says the man known only as Donald. "These resources include compute power, networking and storage. In order to recover a vServer from a failure in the underlying rack all of these components have to be thoughts about. This article only discusses the backup and recovery strategies that apply to the storage system of a vServer." This Week on the OTN Architect Community Home Page Make time to check out this week's features on the OTN Solution Architect Homepage, including: SOA Practitioner Guide: Identifying and Discovering Services Technical article by Yuli Vasiliev on Setting Up, Configuring, and Using an Oracle WebLogic Server Cluster Podcast: Are You Future Proof? Clustering ODI11g for High-Availability Part 1: Introduction and Architecture | Richard Yeardley "JEE agents can be deployed alongside, or instead of, standalone agents," says Rittman Meade's Richard Yeardley. "But there is one key advantage in using JEE agents and WebLogic – when you deploy JEE agents as part of a WebLogic cluster they can be configured together to form a high availability cluster." Learn more in Yeardley's extensive post. OIM 11g : Multi-thread approach for writing custom scheduled job | Saravanan V S Saravanan shares insight and expertise relevant to "designing and developing an OIM schedule job that uses multi threaded approach for updating data in OIM using APIs." How to Create Virtual Directory in Weblogic Server | Zeeshan Baig Oracle ACE Zeeshan Baig shows you how in six easy steps. SOA Galore: New Books for Technical Eyes Only Shake up up your technical skills with this trio of new technical books from community members covering SOA and BPM. Thought for the Day "Humans are the best value in computers -- where else can you get a non-linear computer weighing only about 160lbs, having a billion binary decision elements, that can be mass-produced by unskilled labour?" — Anonymous Source: SoftwareQuotes.com

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• SQLAuthority News – Live Virtual Classroom New Trend in Technology

  - by nupurdave

  This blog post is by Nupur Dave, who is housewife and works from home. Changing times and a super busy lifestyle have rendered most of us powerless when it comes to doing what we love to do. I feel that a man never ceases to learn and his sole aim is to seek knowledge, and keep growing. However, our tight schedules and packed calendars mean that we really have to struggle to take some time out and follow the path towards learning. Like all working professionals with a family to take care of, I hardly found time to pursue my interests. However, it was getting increasingly important for me to upgrade my skills, not only for my personal quest for knowledge but to also substantiate my professional standing. When I came to know about Koenig Live Virtual Classroom from friends, it piqued my interest. I felt like it was the answer to all my concerns. Without wasting a single minute, I contacted Koenig for a demo class. Here are some of the highlights of Koenig LVC which instantly struck a chord in me: Online Training – Koenig offers 1-on-1 Online Training with the instructor at the other end. Doesn’t matter where I am sitting, in my office or at home, I can connect to my trainer from anywhere. Flexible Timings – The most comfortable part is you get to choose the time that suits you best. Economical -  No need to travel a thousand miles, the experts are right here on your computer screen. So no extra cost of travel, lodging and meals. 24X7 Lab Access: This is again a great feature that proved to be very beneficial in gaining a practical understanding of the subject. Powered by a data center, this facility offers students much to look forward to. 300+ Full Time Certified Experts: Be assured that you are learning from the best people in the industry. Customized Courses: Course material and training delivery is completely customized to suit your specific requirements. Official Courseware: The instructor teaches from official courseware of the vendor, depending on which course you have applied for – be it Microsoft, Cisco, Oracle or any other certification. Take Exam from Anywhere: Post completion of your IT training, you can take your certification exam from anywhere. Again, no need to travel a thousand miles to earn certified status. No Pre-Recorded Sessions: For those who still need clarification, it will be a live online classroom with trainers instructing you in real time. So you won’t get any surprises of getting pre-recorded sessions in place of your live instructor. Koenig’s Live Virtual Classroom methodology greatly exceeded my expectations. The instructor was highly skilled and very professional. I had concerns about the quality of AV on the computer screen, and whether I’ll be able to understand each topic in detail. However, the quality of video and sound, and the learning methodology used was impeccable. If you’re also facing time crunch and other commitment issues which are getting in the way of your professional development, LVC is the best solution to learn and grow. To know more about Student Experiences and Feedback of Koenig LVC, you can view their Testimonials. Reference: Nupur Dave (http://blog.sqlauthority.com)Filed under: SQL Authority

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• Calculating for leap year [migrated]

  - by Bradley Bauer

  I've written this program using Java in Eclipse. I was able to utilize a formula I found that I explained in the commented out section. Using the for loop I can iterate through each month of the year, which I feel good about in that code, it seems clean and smooth to me. Maybe I could give the variables full names to make everything more readable but I'm just using the formula in its basic essence :) Well my problem is it doesn't calculate correctly for years like 2008... Leap Years. I know that if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) then we have a leap year. Maybe if the year is a leap year I need to subtract a certain amount of days from a certain month. Any solutions, or some direction would be great thanks :) package exercises; public class E28 { /* * Display the first days of each month * Enter the year * Enter first day of the year * * h = (q + (26 * (m + 1)) / 10 + k + k/4 + j/4 + 5j) % 7 * * h is the day of the week (0: Saturday, 1: Sunday ......) * q is the day of the month * m is the month (3: March 4: April.... January and Feburary are 13 and 14) * j is the century (year / 100) * k is the year of the century (year %100) * */ public static void main(String[] args) { java.util.Scanner input = new java.util.Scanner(System.in); System.out.print("Enter the year: "); int year = input.nextInt(); int j = year / 100; // Find century for formula int k = year % 100; // Find year of century for formula // Loop iterates 12 times. Guess why. for (int i = 1, m = i; i <= 12; i++) { // Make m = i. So loop processes formula once for each month if (m == 1 || m == 2) m += 12; // Formula requires that Jan and Feb are represented as 13 and 14 else m = i; // if not jan or feb, then set m to i int h = (1 + (26 * (m + 1)) / 10 + k + k/4 + j/4 + 5 * j) % 7; // Formula created by a really smart man somewhere // I let the control variable i steer the direction of the formual's m value String day; if (h == 0) day = "Saturday"; else if (h == 1) day = "Sunday"; else if (h == 2) day = "Monday"; else if (h == 3) day = "Tuesday"; else if (h == 4) day = "Wednesday"; else if (h == 5) day = "Thursday"; else day = "Friday"; switch (m) { case 13: System.out.println("January 1, " + year + " is " + day); break; case 14: System.out.println("Feburary 1, " + year + " is " + day); break; case 3: System.out.println("March 1, " + year + " is " + day); break; case 4: System.out.println("April 1, " + year + " is " + day); break; case 5: System.out.println("May 1, " + year + " is " + day); break; case 6: System.out.println("June 1, " + year + " is " + day); break; case 7: System.out.println("July 1, " + year + " is " + day); break; case 8: System.out.println("August 1, " + year + " is " + day); break; case 9: System.out.println("September 1, " + year + " is " + day); break; case 10: System.out.println("October 1, " + year + " is " + day); break; case 11: System.out.println("November 1, " + year + " is " + day); break; case 12: System.out.println("December 1, " + year + " is " + day); break; } } } }

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• Getting errors when installing packages

  - by user1805184

  Which ever package I try and install I seem to get the following error installArchives() failed: Preconfiguring packages ... Preconfiguring packages ... Preconfiguring packages ... Preconfiguring packages ... Selecting previously unselected package libphonon4. (Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 286403 files and directories currently installed.) Unpacking libphonon4 (from .../libphonon4_4%3a4.7.0really4.6.0-0ubuntu1_amd64.deb) ... Selecting previously unselected package phonon-backend-gstreamer. Unpacking phonon-backend-gstreamer (from .../phonon-backend-gstreamer_4%3a4.7.0really4.6.2-0ubuntu0.1_amd64.deb) ... Selecting previously unselected package gstreamer0.10-ffmpeg. Unpacking gstreamer0.10-ffmpeg (from .../gstreamer0.10-ffmpeg_0.10.13-1_amd64.deb) ... Selecting previously unselected package phonon. Unpacking phonon (from .../phonon_4%3a4.7.0really4.6.0-0ubuntu1_amd64.deb) ... Selecting previously unselected package minitube. Unpacking minitube (from .../minitube_1.6-1_amd64.deb) ... Processing triggers for hicolor-icon-theme ... Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for desktop-file-utils ... Processing triggers for gnome-menus ... Processing triggers for man-db ... Setting up icaclient (12.1.0) ... dpkg: error processing icaclient (--configure): subprocess installed post-installation script returned error exit status 2 Setting up libphonon4 (4:4.7.0really4.6.0-0ubuntu1) ... No apport report written because MaxReports is reached already Setting up phonon-backend-gstreamer (4:4.7.0really4.6.2-0ubuntu0.1) ... Setting up gstreamer0.10-ffmpeg (0.10.13-1) ... Setting up phonon (4:4.7.0really4.6.0-0ubuntu1) ... Setting up minitube (1.6-1) ... Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: icaclient Error in function: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1) Setting up icaclient (12.1.0) ... dpkg: error processing icaclient (--configure): subprocess installed post-installation script returned error exit status 2 please help....

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• Solaris 11.1: Encrypted Immutable Zones on (ZFS) Shared Storage

  - by darrenm

  Solaris 11 brought both ZFS encryption and the Immutable Zones feature and I've talked about the combination in the past.  Solaris 11.1 adds a fully supported method of storing zones in their own ZFS using shared storage so lets update things a little and put all three parts together. When using an iSCSI (or other supported shared storage target) for a Zone we can either let the Zones framework setup the ZFS pool or we can do it manually before hand and tell the Zones framework to use the one we made earlier.  To enable encryption we have to take the second path so that we can setup the pool with encryption before we start to install the zones on it. We start by configuring the zone and specifying an rootzpool resource: # zonecfg -z eizoss Use 'create' to begin configuring a new zone. zonecfg:eizoss> create create: Using system default template 'SYSdefault' zonecfg:eizoss> set zonepath=/zones/eizoss zonecfg:eizoss> set file-mac-profile=fixed-configuration zonecfg:eizoss> add rootzpool zonecfg:eizoss:rootzpool> add storage \ iscsi://zs7120-tvp540-c.uk.oracle.com/luname.naa.600144f09acaacd20000508e64a70001 zonecfg:eizoss:rootzpool> end zonecfg:eizoss> verify zonecfg:eizoss> commit zonecfg:eizoss> Now lets create the pool and specify encryption: # suriadm map \ iscsi://zs7120-tvp540-c.uk.oracle.com/luname.naa.600144f09acaacd20000508e64a70001 PROPERTY VALUE mapped-dev /dev/dsk/c10t600144F09ACAACD20000508E64A70001d0 # echo "zfscrypto" > /zones/p # zpool create -O encryption=on -O keysource=passphrase,file:///zones/p eizoss \ /dev/dsk/c10t600144F09ACAACD20000508E64A70001d0 # zpool export eizoss Note that the keysource example above is just for this example, realistically you should probably use an Oracle Key Manager or some other better keystorage, but that isn't the purpose of this example.  Note however that it does need to be one of file:// https:// pkcs11: and not prompt for the key location.  Also note that we exported the newly created pool.  The name we used here doesn't actually mater because it will get set properly on import anyway. So lets go ahead and do our install: zoneadm -z eizoss install -x force-zpool-import Configured zone storage resource(s) from: iscsi://zs7120-tvp540-c.uk.oracle.com/luname.naa.600144f09acaacd20000508e64a70001 Imported zone zpool: eizoss_rpool Progress being logged to /var/log/zones/zoneadm.20121029T115231Z.eizoss.install Image: Preparing at /zones/eizoss/root. AI Manifest: /tmp/manifest.xml.ujaq54 SC Profile: /usr/share/auto_install/sc_profiles/enable_sci.xml Zonename: eizoss Installation: Starting ... Creating IPS image Startup linked: 1/1 done Installing packages from: solaris origin: http://pkg.us.oracle.com/solaris/release/ Please review the licenses for the following packages post-install: consolidation/osnet/osnet-incorporation (automatically accepted, not displayed) Package licenses may be viewed using the command: pkg info --license <pkg_fmri> DOWNLOAD PKGS FILES XFER (MB) SPEED Completed 187/187 33575/33575 227.0/227.0 384k/s PHASE ITEMS Installing new actions 47449/47449 Updating package state database Done Updating image state Done Creating fast lookup database Done Installation: Succeeded Note: Man pages can be obtained by installing pkg:/system/manual done. Done: Installation completed in 929.606 seconds. Next Steps: Boot the zone, then log into the zone console (zlogin -C) to complete the configuration process. Log saved in non-global zone as /zones/eizoss/root/var/log/zones/zoneadm.20121029T115231Z.eizoss.install That was really all we had to do, when the install is done boot it up as normal. The zone administrator has no direct access to the ZFS wrapping keys used for the encrypted pool zone is stored on.  Due to how inheritance works in ZFS he can still create new encrypted datasets that use those wrapping keys (without them ever being inside a process in the zone) or he can create encrypted datasets inside the zone that use keys of his own choosing, the output below shows the two cases: rpool is inheriting the key material from the global zone (note we can see the value of the keysource property but we don't use it inside the zone nor does that path need to be (or is) accessible inside the zone). Whereas rpool/export/home/bob has set keysource locally. # zfs get encryption,keysource rpool rpool/export/home/bob NAME PROPERTY VALUE SOURCE rpool encryption on inherited from $globalzone rpool keysource passphrase,file:///zones/p inherited from $globalzone rpool/export/home/bob encryption on local rpool/export/home/bob keysource passphrase,prompt local  

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• Auto update not working

  - by Mifas

  When I get new updates, I can't install them. When I try to install I get the following error message. installArchives() failed: Preconfiguring packages ... Preconfiguring packages ... Preconfiguring packages ... Preconfiguring packages ... (Reading database ... (Reading database ... 5%% (Reading database ... 10%% (Reading database ... 15%% (Reading database ... 20%% (Reading database ... 25%% (Reading database ... 30%% (Reading database ... 35%% (Reading database ... 40%% (Reading database ... 45%% (Reading database ... 50%% (Reading database ... 55%% (Reading database ... 60%% (Reading database ... 65%% (Reading database ... 70%% (Reading database ... 75%% (Reading database ... 80%% (Reading database ... 85%% (Reading database ... 90%% (Reading database ... 95%% (Reading database ... 100%% (Reading database ... 191976 files and directories currently installed.) Preparing to replace resolvconf 1.63ubuntu11 (using .../resolvconf_1.63ubuntu14_all.deb) ... Unpacking replacement resolvconf ... Preparing to replace libutouch-geis1 2.2.9-0ubuntu2 (using .../libutouch-geis1_2.2.9-0ubuntu3_i386.deb) ... Unpacking replacement libutouch-geis1 ... Preparing to replace vino 3.4.1-0ubuntu1 (using .../vino_3.4.2-0ubuntu1_i386.deb) ... Unpacking replacement vino ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot Processing triggers for man-db ... Processing triggers for gconf2 ... Processing triggers for desktop-file-utils ... Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for gnome-menus ... Processing triggers for libglib2.0-0 ... Setting up oracle-java7-installer (7u3-0~eugenesan~precise4) ... Downloading... --2012-05-23 19:40:37-- http://download.oracle.com/otn-pub/java/jdk/7u3-b04/jdk-7u3-linux-i586.tar.gz Resolving download.oracle.com (download.oracle.com)... 223.224.12.144, 223.224.12.146 Connecting to download.oracle.com (download.oracle.com)|223.224.12.144|:80... connected. HTTP request sent, awaiting response... 302 Moved Temporarily Location: https://edelivery.oracle.com/otn-pub/java/jdk/7u3-b04/jdk-7u3-linux-i586.tar.gz [following] --2012-05-23 19:40:38-- https://edelivery.oracle.com/otn-pub/java/jdk/7u3-b04/jdk-7u3-linux-i586.tar.gz Resolving edelivery.oracle.com (edelivery.oracle.com)... 173.223.2.174 Connecting to edelivery.oracle.com (edelivery.oracle.com)|173.223.2.174|:443... connected. HTTP request sent, awaiting response... 302 Moved Temporarily Location: http://download.oracle.com/errors/download-fail-1505220.html [following] --2012-05-23 19:40:41-- http://download.oracle.com/errors/download-fail-1505220.html Connecting to download.oracle.com (download.oracle.com)|223.224.12.144|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 5307 (5.2K) [text/html] Saving to: `./jdk-7u3-linux-i586.tar.gz' 0K ..... 100%% 52.9K=0.1s 2012-05-23 19:40:41 (52.9 KB/s) - `./jdk-7u3-linux-i586.tar.gz' saved [5307/5307] Download done. sha256sum mismatch jdk-7u3-linux-i586.tar.gz Oracle JDK 7 is NOT installed. dpkg: error processing oracle-java7-installer (--configure): subprocess installed post-installation script returned error exit status 1 No apport report written because MaxReports is reached already Setting up resolvconf (1.63ubuntu14) ... Setting up libutouch-geis1 (2.2.9-0ubuntu3) ... Setting up vino (3.4.2-0ubuntu1) ... Processing triggers for resolvconf ... Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: oracle-java7-installer Error in function:

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• Package management system corrupted. Cannot install or remove packages. U12.04LTS

  - by user271490

  Having read other posts, I believe that this may be less about samba than about update system. Below is the log file of the failed installation of Samba. I have been trying without success to install/outstall samba so that I could install anything else ... I cannot either install or remove samba using either update-manager or apt-get (nor indeed Software Centre). One of the errors that I have had to correct is the presence after "removal" (failed) of /usr/share/system-config-samba directory which finally allowed itself to be deleted. That, however was then ... I have U12.04LTS. running on release 63 because I allowed the upgrade to 64 this morning which fell over - no output to monitor - obviously even less support for my graphic chip than I am suffering already (see other posts in this forum). According to my interpretation of the dpkg returned errors there may be some problem with the package files, but if this is the case then it is on servers 'main', 'nantes uni fr' and 'best fr' at the very least if not everywhere. The suggestions offered at Package operation failed and elsewhere have not worked for me. This linked post suggests that a similar error is present in other packages, or that the error is in the 'update system' I have tried ... sudo apt-get remove samba ... autoremove ... install samba ... clean ... update -f all of the above In update-manager I have tried the "reload packages list" which fails to terminate because of the error. I have tried to install and remove samba from the software centre ... :( I am at a loss ... I need help, please! Firstly to recover my apt-get/update-manager/Software Centre so that I can at least carry on with my continuing installation - up to communicating with home network hence need for samba - which brings me to my second requirement ... samba. PS is the issue about "MaxReports" associated or apart? UPDATE! Being heartily sick of restarting FF every 5 seconds I thought I'd try again with Chromium ... and got the same errors from dpkg about corrupt compressed package - coincidence? Of course this was no longer in clipboard when I got here because apport has just errored ... AAARRRGGGH!!! Why does every error clear the clipboard? Thanks for any and all help!! installArchives() failed: Preconfiguring packages ... ... snip (Reading database ... ... snip (Reading database ... 184858 files and directories currently installed.) Unpacking samba (from .../samba_2%3a3.6.3-2ubuntu2.10_i386.deb) ... dpkg-deb (subprocess): data: internal gzip read error: ': data error' dpkg-deb: error: subprocess returned error exit status 2 dpkg: error processing /var/cache/apt/archives/samba_2%3a3.6.3-2ubuntu2.10_i386.deb (--unpack): subprocess dpkg-deb --fsys-tarfile returned error exit status 2 No apport report written because MaxReports is reached already Selecting previously unselected package system-config-samba. Unpacking system-config-samba (from .../system-config-samba_1.2.63-0ubuntu5_all.deb) ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot Processing triggers for ufw ... Processing triggers for man-db ... Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for desktop-file-utils ... Processing triggers for gnome-menus ... Processing triggers for hicolor-icon-theme ... Errors were encountered while processing: /var/cache/apt/archives/samba_2%3a3.6.3-2ubuntu2.10_i386.deb Error in function: dpkg: dependency problems prevent configuration of system-config-samba: system-config-samba depends on samba; however: Package samba is not installed. dpkg: error processing system-config-samba (--configure): dependency problems - leaving unconfigured

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• What Color is your Jetpack ?

  - by JoshReuben

  I’m a programmer, Im approaching 40, and I’m fairly decent at my job – I’ll keep doing what I’m doing for as long as they let me!   So what are your career options if you know how to code? A Programmer could be ..   An Algorithm developer Pros Interesting High barriers of entry, potential for startup competitive factor Cons Do you have the skill, qualifications? What are working conditions n this mystery niche ? micro-focus An Academic Pros Low pressure Job security – or is this an illusion ? Cons Low Pay Need a PhD A Software Architect Pros: strategic, rather than tactical Setting technology platform and high level vision You say how it should work, others have to figure out why its not working the way its supposed to ! broad view – you are paid to learn (how do you con people into paying for you to learn ??) Cons: Glorified developer – more often than not! competitive – everyone wants to do it ! loose touch with underlying tech in tough times, first guy to get the axe ! A Software Engineer Pros: interesting, always more to learn fun I can do it Fallback Cons: Nothing new under the sun – been there, done that Dealing with poor requirements, deadlines, other peoples code, overtime C#, XAML, Web - Low barriers of entry –> à race to the bottom A Team leader Pros: Setting code standards and proposing technology choices Cons: Glorified developer – more often than not! Inspecting other peoples code and debugging the problems they cannot fix Dealing with mugbies and prima donas Responsible for QA of others A Project Manager Pros No need for debugging other peoples code Cons Low barrier of entry High pressure Responsible for QA of others Loosing touch with technology A lot of bullshit meetings Have to be an asshole A Product Manager Pros No need for debugging other peoples code Learning new skillset of sales and marketing Cons Travel (I'm a family man) May need to know the bs details of an uninteresting product things I want to work with: AI, algorithms, Numerical Computing, Mathematica, C++ AMP – unfortunately, the work here is few & far between. VS & TFS Extensibility, DSLs (Workflow , Lightswitch), Code Generation – one day, code will write code ! Unity3D, WebGL – fun, fun, fun ! Modern Web – Knockout, SignalR, MVC, Node.Js ??? (tentative – I'll wait until things stabilize as this area is undergoing a pre-Cambrian explosion) Things I don’t want to work with: (but will if I'm asked to !) C# – same old, same old – not learning anything new here Old code – blech ! Environment with code & fix mentality , ad hoc requirements, excessive overtime Pc support, System administration – even after 20 years, people still ask you to do this sometimes ! debugging – my skills are just not there yet Oracle Old tech: VB 6, XSLT, WinForms, Net 3.51 or less Old style Web dev Information Systems: ASP.NET webforms, Reporting services / crystal reports, SQL Server CRUD with manual data layer, XAML MVVM – variations of the same concept, ad nauseaum. Low barriers of entry –> race to the bottom.  Metro – an elegant API coupled to a horrendous UX – I'll wait for market penetration viability before investing further in this.   Conclusion So if you are in a slump, take heart: Programming is a great career choice compared to every other job !

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• Cant finish upgrade from 11.10 to 12 on VPS based on Parallels Virtuozzo Containers, due to libc6

  - by Carmageddon

  I was stuck with this problem near the end of an upgrade: WARNING: this version of the GNU libc requires kernel version 2.6.24 or later. Please upgrade your kernel before installing glibc. The installation of a 2.6 kernel could ask you to install a new libc first, this is NOT a bug, and should NOT be reported. In that case, please add lenny sources to your /etc/apt/sources.list and run: apt-get install -t lenny linux-image-2.6 Their suggested stepds dont work on VPS, and after googling, I came up to this: Why did my upgrade to 12.04 fail with "glibc not found" or "libc6" or "requires kernel 2.6.24" error? There is comment by izx which explains my problem and proposes a workaround (might take a while to convince the guys to upgrade the kernel..). However, when I follow his instructions, I get error: # apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following extra packages will be installed: libc-dev-bin libc6 libc6-dev libnih1 Suggested packages: glibc-doc The following packages will be upgraded: libc-dev-bin libc6 libc6-dev libnih1 4 upgraded, 0 newly installed, 0 to remove and 394 not upgraded. 1 not fully installed or removed. Need to get 0 B/7737 kB of archives. After this operation, 233 kB disk space will be freed. Do you want to continue [Y/n]? y locale: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.15' not found (required by locale) locale: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.14' not found (required by locale) Preconfiguring packages ... (Reading database ... 35175 files and directories currently installed.) Preparing to replace libc6-dev 2.13-20ubuntu5.2 (using .../libc6-dev_2.15-0ubuntu10.3_amd64.deb) ... Unpacking replacement libc6-dev ... Preparing to replace libc-dev-bin 2.13-20ubuntu5.2 (using .../libc-dev-bin_2.15-0ubuntu10.3_amd64.deb) ... Unpacking replacement libc-dev-bin ... Preparing to replace libc6 2.13-20ubuntu5.2 (using .../libc6_2.15-0ubuntu10.3_amd64.deb) ... locale: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.15' not found (required by locale) locale: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.14' not found (required by locale) Checking for services that may need to be restarted... Checking init scripts... runlevel:/var/run/utmp: No such file or directory Checking for services that may need to be restarted... Checking init scripts... runlevel:/var/run/utmp: No such file or directory WARNING: init script for samba not found. Stopping some services possibly affected by the upgrade (will be restarted later): cron: stopping...done. WARNING: this version of the GNU libc requires kernel version 2.6.24 or later. Please upgrade your kernel before installing glibc. The installation of a 2.6 kernel _could_ ask you to install a new libc first, this is NOT a bug, and should *NOT* be reported. In that case, please add lenny sources to your /etc/apt/sources.list and run: apt-get install -t lenny linux-image-2.6 Then reboot into this new kernel, and proceed with your upgrade dpkg: error processing /var/cache/apt/archives/libc6_2.15-0ubuntu10.3_amd64.deb (--unpack): subprocess new pre-installation script returned error exit status 1 Processing triggers for man-db ... locale: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.15' not found (required by locale) locale: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.14' not found (required by locale) Errors were encountered while processing: /var/cache/apt/archives/libc6_2.15-0ubuntu10.3_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) I also attempted to manually grab the .deb package and install it using dpkg -i, but getting: locale: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.15' not found (required by locale) Even though the file is: libc-bin_2.15-0ubuntu10+openvz0_amd64.deb

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• broken upgrade from 10.04 to 12.04 on a VPS - recoverable?

  - by HorusKol

  I have a VPS hosted 1500 km away. It originally came with 9.10 - and this morning I decided that I really should get to an LTS release, and figured I'd jump to 12.04. Researching, I discovered that there is no direct path between 9.10 and 12.04, but that I could upgrade via 10.04. After backing up my data, I dove in. The upgrade to 10.04 was successful, and I proceeded to upgrade to 12.04. Things started to go wrong. First, I got an error with GLIBC - I retried and got the same error. That's when I stopped the upgrade. I then tried another round of apt-get update && apt-get upgrade and got a list of "unmet dependencies": apt: Depends: ubuntu-keyring but it is not going to be installed Depends: libc6 (>= 2.15) but 2.11.1-0ubuntu7.11 is to be installed Depends: libstdc++6 (>= 4.6) but 4.4.3-4ubuntu5.1 is to be installed PreDepends: dpkg (>= 1.15.7.2) but 1.15.5.6ubuntu4.6 is to be installed apt-utils: Depends: libapt-pkg-libc6.10-6-4.8 libapt-inst1.4: Depends: libc6 (>= 2.14) but 2.11.1-0ubuntu7.11 is to be installed libapt-pkg4.12: Depends: libc6 (>= 2.15) but 2.11.1-0ubuntu7.11 is to be installed Depends: libstdc++6 (>= 4.6) but 4.4.3-4ubuntu5.1 is to be installed libc6: Depends: libc-bin (= 2.11.1-0ubuntu7.11) but 2.15-0ubuntu10.2 is to be installed libept0: Depends: libapt-pkg-libc6.10-6-4.8 libnih-dbus1: Depends: libnih1 (= 1.0.3-4ubuntu9) but 1.0.1-1 is to be installed I tried to see if I could do something about these - using apt-get -f install. This told me that I would need to upgrade my kernel. I found instructions on how to do this, but when I ran apt-get to install the new linux headers, I got the same dependency errors. I found another answer here where someone else had had an interruption in their upgrade - and tried the solution that worked for them: sudo apt-get -f dist-upgrade This resulted in the error: E: Could not perform immediate configuration on 'python2.7-minimal'.Please see man 5 apt.conf under APT::Immediate-Configure for details. (2) I tried to resolve this by: apt-get install -o APT::Immediate-Configure=false -f apt python-minimal But this simply ended up with this last list of dependency errors: apt: Depends: ubuntu-keyring but it is not going to be installed Depends: libc6 (>= 2.15) but 2.11.1-0ubuntu7.11 is to be installed Depends: libstdc++6 (>= 4.6) but 4.4.3-4ubuntu5.1 is to be installed PreDepends: dpkg (>= 1.15.7.2) but 1.15.5.6ubuntu4.6 is to be installed apt-utils: Depends: libapt-pkg-libc6.10-6-4.8 libapt-inst1.4: Depends: libc6 (>= 2.14) but 2.11.1-0ubuntu7.11 is to be installed libapt-pkg4.12: Depends: libc6 (>= 2.15) but 2.11.1-0ubuntu7.11 is to be installed Depends: libstdc++6 (>= 4.6) but 4.4.3-4ubuntu5.1 is to be installed libc6: Depends: libc-bin (= 2.11.1-0ubuntu7.11) but 2.15-0ubuntu10.2 is to be installed libept0: Depends: libapt-pkg-libc6.10-6-4.8 libnih-dbus1: Depends: libnih1 (= 1.0.3-4ubuntu9) but 1.0.1-1 is to be installed python: Depends: python-minimal (= 2.6.5-0ubuntu1) but 2.7.3-0ubuntu2 is to be installed python-apt: Depends: libapt-pkg-libc6.10-6-4.8 python-minimal: Depends: python2.7-minimal (>= 2.7.3) but it is not going to be installed Breaks: python-support (< 1.0.10ubuntu2) but 1.0.4ubuntu1 is to be installed synaptic: Depends: libapt-pkg-libc6.10-6-4.8 Any ideas on how to dig out of this hole?

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• There are 2 jobs available - which one sounds better all round [closed]

  - by Steve Gates

  I am currently employed at a company where we scrape by each year breaking even, sometimes having a little profit. The development environment is very relaxed and we have a laugh. My colleagues are not interested in improving their knowledge unless they have to, so trying to get them to adopt things like TDD is a non-starter. My development manager is stuck in .Net 2 land and refuses to use things like LINQ. He over complicates architecture and writes very unreadable code, heres an example SortedList<int,<SortedList<int,SortedList<int, MyClass>>>> The MD of the company has no drive and lets the one sales guy bring in the contracts. We are not busy all the time and this allows me time to look at new technology and learn. In terms of using things like TDD, my development manager has no problem with it and can kind of see the purpose of it, he just wont use it himself. This means I am alone in learning new things and am often resorting to StackOverflow to make sure I get things right. The company has a lot of flexibility, I can work from home if needs be and when my daughter was born they let me work from home 1 day a week however they expect this flexibility in return often asking me to travel occasionally on a Friday afternoon for the following week. Sometimes its abroad. We are also pretty much on call 24/5 as we have engineers in various countries. Also we have no testers so most of the testing is done by us developers and some testing by engineers. Either way no-one likes testing! I have been offered a role at a company I worked at 5 years ago. They were quite Victorian in their working practices but it appears to have relaxed now although I suspect still reasonably formal. There is a new team of developers I don't know and they are about to move to new offices. The team lead is a guy that was there when I was and I get the impression he takes his role seriously and likes his formal procedures and documentation. I think some of the Victorian practices may have rubbed off on him. However he did say if things crop up then as long as I can trust the person they can work at home although he prefers people in the office. The team uses SCRUM, TDD and SOLID design principles so they are quite up to date in technology. They are reasonably Microsoft focused. It appears the Technical Director might be the R&D man and research new technology on his own not allowing developers to play with new technology. He possibly might be a super developer and makes all the decisions that no can argue with. They are currently moving to Entity Framework away from NHibernate based on issues that their queries seem to fail sometimes and they feel NHibernate is stagnant. They have analysts and a QA team. The MD is focused and they are an expanding company making profit each year. I'm not sure what the team morale is and whether they have a laugh. When I had a tour around the office they were there in dead silence. I'm really unsure which role is the best for me and going with my gut instinct is useless as I'm not sure what my gut is telling me. Based on the information above which role would you choose and why?

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• Making user input/math on data fast, unlike excel type programs

  - by proGrammar

  I'm creating a research platform solely for myself to do some research on data. Programs like excel are terribly slow for me so I'm trying to come up with another solution. Originally I used excel. A1 was the cell that contained the data and all other cells in use calculated something on A1, or on other cells, that all could be in the end traced to A1. A1 was like an element of an array, I then I incremented it to go through all my data. This was way too slow. So the only other option I found originally was to hand code in c# the calculations inside a loop. Then I simply recompiled each time I changed my math. This was terribly slow to do and I had to order everything correctly so things would update correctly (dependencies). I could have also used events, but hand coding events for each cell like calculation would also be very slow. Next I created an application to read Excel and to perfectly imitate it. Which is what I now use. Basically I write formulas onto a fraction of my data to get live results inside excel. Then my program reads excel, writes another c# program, compiles it, and runs that program which runs my excel created formulas through a lot more data a whole lot faster. The advantage being my application dependency sorts everything (or I could use events) so I don't have to (like excel does) And of course the speed. But now its not a single application anymore. Instead its 2 applications, one which only reads my formulas and writes another program. The other one being the result which only lives for a short while before I do other runs through my data with different formulas / settings. So I can't see multiple results at one time without introducing even more programs like a database or at least having the 2 applications talking to each other. My idea was to have a dll that would be written, compiled, loaded, and unloaded again and again. So a self-updating program, sort of. But apparently that's not possible without another appdomain which means data has to be marshaled to be moved between the appdomains. Which would slow things down, not for summaries, but for other stuff I need to do with all my data. I'm also forgetting to mention a huge problem with restarting an application again and again which is having to reload ALL my data into memory again and again. But its still a whole lot faster than excel. I'm really super puzzled as to what people do when they want to research data fast. I'm completely unable to have a program accept user input and having it fast. My understanding is that it would have to do things like excel which is to evaluate strings again and again. So my only option is to repeatedly compile applications. Do I have a correct understanding on computer science? I've only just began programming, and didn't think I would have to learn much to do some simple math on data. My understanding is its either compiling my user defined stuff to a program or evaluating them from a string or something stupid again and again. And my only option is to probably switch operating systems or something to be able to have a program compile and run itself without stopping (writing/compiling dll, loading dll to program, unloading, and repeating). Can someone give me some idea on how computers work? Is anything better possible? Like a running program, that can accept user input and compile it and then unload it later? I mean heck operating systems dont need to be RESTARTED with every change to user input. What is this the cave man days? Sorry, it's just so super frustrating not knowing what one can do, and can't do. If only I could understand and learn this stuff fast enough.

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• cannot install firmware-b43-installer

  - by unknown

  output i get when installing the installArchives() failed: Preconfiguring packages ... Preconfiguring packages ... Preconfiguring packages ... Selecting previously deselected package menu. (Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 216125 files and directories currently installed.) Unpacking menu (from .../menu_2.1.44ubuntu1_i386.deb) ... Selecting previously deselected package wifi-radar. Unpacking wifi-radar (from .../wifi-radar_2.0.s05-1.2_all.deb) ... Processing triggers for man-db ... Processing triggers for install-info ... Processing triggers for doc-base ... Processing 1 added doc-base file(s)... Registering documents with scrollkeeper... Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for desktop-file-utils ... Processing triggers for python-gmenu ... Rebuilding /usr/share/applications/desktop.en_US.UTF8.cache... Processing triggers for python-support ... Setting up firmware-b43-installer (4.150.10.5-5) ... --2012-10-26 08:51:30-- http://mirror2.openwrt.org/sources/broadcom-wl-4.150.10.5.tar.bz2 Resolving mirror2.openwrt.org... 46.4.11.11 Connecting to mirror2.openwrt.org|46.4.11.11|:80... failed: Connection refused. dpkg: error processing firmware-b43-installer (--configure): subprocess installed post-installation script returned error exit status 4 No apport report written because MaxReports is reached already Setting up menu (2.1.44ubuntu1) ... Processing triggers for menu ... Setting up wifi-radar (2.0.s05-1.2) ... Processing triggers for menu ... Errors were encountered while processing: firmware-b43-installer Setting up firmware-b43-installer (4.150.10.5-5) ... --2012-10-26 08:51:33-- http://mirror2.openwrt.org/sources/broadcom-wl-4.150.10.5.tar.bz2 Resolving mirror2.openwrt.org... 46.4.11.11 Connecting to mirror2.openwrt.org|46.4.11.11|:80... failed: Connection refused. dpkg: error processing firmware-b43-installer (--configure): subprocess installed post-installation script returned error exit status 4 same thing occurs when i try to install any of the wireless application. All other software installs and the same error when trying to install firmware. I tried to go the link(http://mirror2.openwrt.org/sources/broadcom-wl-4.150.10.5.tar.bz2) and download the package but found no make file found in his package. please help me.

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• High Resolution Timeouts

  - by user12607257

  The default resolution of application timers and timeouts is now 1 msec in Solaris 11.1, down from 10 msec in previous releases. This improves out-of-the-box performance of polling and event based applications, such as ticker applications, and even the Oracle rdbms log writer. More on that in a moment. As a simple example, the poll() system call takes a timeout argument in units of msec: System Calls poll(2) NAME poll - input/output multiplexing SYNOPSIS int poll(struct pollfd fds[], nfds_t nfds, int timeout); In Solaris 11, a call to poll(NULL,0,1) returns in 10 msec, because even though a 1 msec interval is requested, the implementation rounds to the system clock resolution of 10 msec. In Solaris 11.1, this call returns in 1 msec. In specification lawyer terms, the resolution of CLOCK_REALTIME, introduced by POSIX.1b real time extensions, is now 1 msec. The function clock_getres(CLOCK_REALTIME,&res) returns 1 msec, and any library calls whose man page explicitly mention CLOCK_REALTIME, such as nanosleep(), are subject to the new resolution. Additionally, many legacy functions that pre-date POSIX.1b and do not explicitly mention a clock domain, such as poll(), are subject to the new resolution. Here is a fairly comprehensive list: nanosleep pthread_mutex_timedlock pthread_mutex_reltimedlock_np pthread_rwlock_timedrdlock pthread_rwlock_reltimedrdlock_np pthread_rwlock_timedwrlock pthread_rwlock_reltimedwrlock_np mq_timedreceive mq_reltimedreceive_np mq_timedsend mq_reltimedsend_np sem_timedwait sem_reltimedwait_np poll select pselect _lwp_cond_timedwait _lwp_cond_reltimedwait semtimedop sigtimedwait aiowait aio_waitn aio_suspend port_get port_getn cond_timedwait cond_reltimedwait setitimer (ITIMER_REAL) misc rpc calls, misc ldap calls This change in resolution was made feasible because we made the implementation of timeouts more efficient a few years back when we re-architected the callout subsystem of Solaris. Previously, timeouts were tested and expired by the kernel's clock thread which ran 100 times per second, yielding a resolution of 10 msec. This did not scale, as timeouts could be posted by every CPU, but were expired by only a single thread. The resolution could be changed by setting hires_tick=1 in /etc/system, but this caused the clock thread to run at 1000 Hz, which made the potential scalability problem worse. Given enough CPUs posting enough timeouts, the clock thread could be a performance bottleneck. We fixed that by re-implementing the timeout as a per-CPU timer interrupt (using the cyclic subsystem, for those familiar with Solaris internals). This decoupled the clock thread frequency from timeout resolution, and allowed us to improve default timeout resolution without adding CPU overhead in the clock thread. Here are some exceptions for which the default resolution is still 10 msec. The thread scheduler's time quantum is 10 msec by default, because preemption is driven by the clock thread (plus helper threads for scalability). See for example dispadmin, priocntl, fx_dptbl, rt_dptbl, and ts_dptbl. This may be changed using hires_tick. The resolution of the clock_t data type, primarily used in DDI functions, is 10 msec. It may be changed using hires_tick. These functions are only used by developers writing kernel modules. A few functions that pre-date POSIX CLOCK_REALTIME mention _SC_CLK_TCK, CLK_TCK, "system clock", or no clock domain. These functions are still driven by the clock thread, and their resolution is 10 msec. They include alarm, pcsample, times, clock, and setitimer for ITIMER_VIRTUAL and ITIMER_PROF. Their resolution may be changed using hires_tick. Now back to the database. How does this help the Oracle log writer? Foreground processes post a redo record to the log writer, which releases them after the redo has committed. When a large number of foregrounds are waiting, the release step can slow down the log writer, so under heavy load, the foregrounds switch to a mode where they poll for completion. This scales better because every foreground can poll independently, but at the cost of waiting the minimum polling interval. That was 10 msec, but is now 1 msec in Solaris 11.1, so the foregrounds process transactions faster under load. Pretty cool.

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• Encryption is hard: AES encryption to Hex

  - by Rob Cameron

  So, I've got an app at work that encrypts a string using ColdFusion. ColdFusion's bulit-in encryption helpers make it pretty simple: encrypt('string_to_encrypt','key','AES','HEX') What I'm trying to do is use Ruby to create the same encrypted string as this ColdFusion script is creating. Unfortunately encryption is the most confusing computer science subject known to man. I found a couple helper methods that use the openssl library and give you a really simple encryption/decryption method. Here's the resulting string: "\370\354D\020\357A\227\377\261G\333\314\204\361\277\250" Which looks unicode-ish to me. I've tried several libraries to convert this to hex but they all say it contains invalid characters. Trying to unpack it results in this: string = "\370\354D\020\357A\227\377\261G\333\314\204\361\277\250" string.unpack('U') ArgumentError: malformed UTF-8 character from (irb):19:in `unpack' from (irb):19 At the end of the day it's supposed to look like this (the output of the ColdFusion encrypt method): F8E91A689565ED24541D2A0109F201EF Of course that's assuming that all the padding, initialization vectors, salts, cypher types and a million other possible differences all line up. Here's the simple script I'm using to encrypt/decrypt: def aes(m,k,t) (aes = OpenSSL::Cipher::Cipher.new('aes-256-cbc').send(m)).key = Digest::SHA256.digest(k) aes.update(t) << aes.final end def encrypt(key, text) aes(:encrypt, key, text) end def decrypt(key, text) aes(:decrypt, key, text) end Any help? Maybe just a simple option I can pass to OpenSSL::Cipher::Cipher that will tell it to hex-encode the final string?

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• NSTextField autocomplete

  - by Rasmus Styrk

  Does anyone know of any class or lib that can implement autocompletion to an NSTextField? I'am trying to get the standard autocmpletion to work but it is made as a synchronous api. I get my autocompletion words via an api call over the internet. What have i done so far is: - (void)controlTextDidChange:(NSNotification *)obj { if([obj object] == self.searchField) { [self.spinner startAnimation:nil]; [self.wordcompletionStore completeString:self.searchField.stringValue]; if(self.doingAutocomplete) return; else { self.doingAutocomplete = YES; [[[obj userInfo] objectForKey:@"NSFieldEditor"] complete:nil]; } } } When my store is done, i have a delegate that gets called: - (void) completionStore:(WordcompletionStore *)store didFinishWithWords:(NSArray *)arrayOfWords { [self.spinner stopAnimation:nil]; self.completions = arrayOfWords; self.doingAutocomplete = NO; } The code that returns the completion list to the nstextfield is: - (NSArray *)control:(NSControl *)control textView:(NSTextView *)textView completions:(NSArray *)words forPartialWordRange:(NSRange)charRange indexOfSelectedItem:(NSInteger *)index { *index = -1; return self.completions; } My problem is that this will always be 1 request behind and the completion list only shows on every 2nd char the user inputs. I have tried searching google and SO like a mad man but i cant seem to find any solutions.. Any help is much appreciated.

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• How to edit the XSL for RSS Viewer Webpart

  - by Nagendra

  I am using a blog site as a source for my RSS Feed. As I see the RSS feed, its showing up as the following :: Blog: Posts Test Thursday, March 04, 2010 - Body: With 25 four's and 3 sixers Sachin crosses 200 (147 balls) runs in an single ODI innings. Creates another world record. Watch the final over where he got it double hundred with MSD on the other end. This is what he had to say after getting the MOM (man of the match): I dedicate this knock to all the people of India, who have supported me throughout over the last 20 years. I was timing the ball well, and I felt that anywhere between 340 to 350 was a good target. I thought Karthik, Yusuf and Dhoni supported me well. I thought that a 200 would be possible once I crossed 175 in the 42nd over. I am enjoying my cricket at the moment. There have been a few bad decisions I have made as a batsman, but as long as the passion is there I will carry on. It feels good that I lasted the 50 overs, it was a good test of my fitness and I would like to do this once again. Well!!! Wait for more. Published: 3/4/2010 3:18 PM More... I actually wanted to remove the Body, Published parameters. I just want my XSLT to be able to show only the Description of the blog. No need to have this meta data. Can anyone help me in specifying tthe XSL changes?

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• How to insert inline content from one FlowDocument into another?

  - by Robert Rossney

  I'm building an application that needs to allow a user to insert text from one RichTextBox at the current caret position in another one. I spent a lot of time screwing around with the FlowDocument's object model before running across this technique - source and target are both FlowDocuments: using (MemoryStream ms = new MemoryStream()) { TextRange tr = new TextRange(source.ContentStart, source.ContentEnd); tr.Save(ms, DataFormats.Xaml); ms.Seek(0, SeekOrigin.Begin); tr = new TextRange(target.CaretPosition, target.CaretPosition); tr.Load(ms, DataFormats.Xaml); } This works remarkably well. The only problem I'm having with it now is that it always inserts the source as a new paragraph. It breaks the current run (or whatever) at the caret, inserts the source, and ends the paragraph. That's appropriate if the source actually is a paragraph (or more than one paragraph), but not if it's just (say) a line of text. I think it's likely that the answer to this is going to end up being checking the target to see if it consists entirely of a single block, and if it does, setting the TextRange to point at the beginning and end of the block's content before saving it to the stream. The entire world of the FlowDocument is a roiling sea of dark mysteries to me. I can become an expert at it if I have to (per Dostoevsky: "Man is the animal who can get used to anything."), but if someone has already figured this out and can tell me how to do this it would make my life far easier.

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• Web-based clients vs thick/rich clients?

  - by rudolfv

  My company is a software solutions provider to a major telecommunications company. The environment is currently IBM WebSphere-based with front-end IBM Portal servers talking to a cluster of back-end WebSphere Application Servers providing EJB services. Some of the portlets use our own home-grown MVC-pattern and some are written in JSF. Recently we did a proof-of-concept rich/thick-client application that communicates directly with the EJB's on the back-end servers. It was written in NetBeans Platform and uses the WebSphere application client library to establish communication with the EJB's. The really painful bit was getting the client to use secure JAAS/SSL communications. But, after that was resolved, we've found that the rich client has a number of advantages over the web-based portal client applications we've become accustomed to: Enormous performance advantage (CORBA vs. HTTP, cut out the Portal Server middle man) Development is simplified and faster due to use of NetBeans' visual designer and Swing's generally robust architecture The debug cycle is shortened by not having to deploy your client application to a test server No mishmash of technologies as with web-based development (Struts, JSF, JQuery, HTML, JSTL etc., etc.) After enduring the pain of web-based development (even JSF) for a while now, I've come to the following conclusion: Rich clients aren't right for every situation, but when you're developing an in-house intranet-based solution, then you'd be crazy not to consider NetBeans Platform or Eclipse RCP. Any comments/experiences with rich clients vs. web clients?

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• Adding a Contact with the Google Contacts .NET API

  - by Bryan

  I am using the following code to add a contact, but I get the following unhandled exception: Google.GData.Client.GDataRequestException: Execution of request failed: http://www.google.com/m8/feeds/contacts/default/full GDataCredentials myCred = new GDataCredentials("myusername", "mypassword"); RequestSettings myRequestSettings = new RequestSettings("macpapa-GoogleCodeTest3-1", myCred); ContactsRequest myContactRequest = new ContactsRequest(myRequestSettings); Contact myContact = new Contact(); myContact.Title = "Be Dazzle"; PhoneNumber myPhoneNumber = new PhoneNumber("805-453-6688"); myPhoneNumber.Rel = ContactsRelationships.IsGeneral; myPhoneNumber.Primary = true; myContact.Phonenumbers.Add(myPhoneNumber); EMail myEmail = new EMail("[email protected]", ContactsRelationships.IsHome); EMail myEmail2 = new EMail("[email protected]", ContactsRelationships.IsWork); myEmail.Primary = true; myContact.Emails.Add(myEmail); myContact.Emails.Add(myEmail2); PostalAddress postalAddress = new PostalAddress(); postalAddress.Value = "123 somewhere lane"; postalAddress.Primary = true; postalAddress.Rel = ContactsRelationships.IsHome; myContact.PostalAddresses.Add(postalAddress); Uri feedUri = new Uri(ContactsQuery.CreateContactsUri("default")); Contact createdContact = myContactRequest.Insert<Contact>(feedUri, myContact); Please offer any available suggestions. Thank you.

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• Getting past dates in HP-UX with ksh

  - by Alejandro Atienza Ramos

  Ok, so I need to translate a script from a nice linux & bash configuration to ksh in hp-ux. Each and every command expects a different syntax and i want to kill myself. But let's skip the rant. This is part of my script anterior=`date +"%Y%0m" -d '1 month ago'` I basically need to get a past date in format 201002. Never mind the thing that, in the new environment, %0m means "no zeroes", while actually in the other one it means "yes, please put that zero on my string". It doesn't even accept the "1 month ago". I've read the man date for HP-UX and it seems you just can't do date arithmetic with it. I've been looking around for a while but all i find are lengthy solutions. I can't quite understand that such a typical administrative task like adding dates needs so much fuss. Isn't there a way to convert my one-liner to, well, i don't know, another one? Come on, i've seen proposed solutions that used bc, had thirty plus lines and magic number all over the script. The simplest solutions seem to use perl... but i don't know how to modify them, as they're quite arcane. Thanks!

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• gcc: Do I need -D_REENTRANT with pthreads?

  - by stefanB

  On Linux (kernel 2.6.5) our build system calls gcc with -D_REENTRANT. Is this still required when using pthreads? How is it related to gcc -pthread option? I understand that I should use -pthread with pthreads, do I still need -D_REENTRANT? On a side note, is there any difference that you know off between the usage of REENTRANT between gcc 3.3.3 and gcc 4.x.x ? When I use -pthread gcc option I can see that _REENTRANT gets defined. Will omitting -D_REENTRANT from command line make any difference, for example could some objects be compiled without multithreaded support and then linked into binary that uses pthreads and will cause problems? I assume it should be ok just to use: g++ -pthread > echo | g++ -E -dM -c - > singlethreaded > echo | g++ -pthread -E -dM -c - > multithreaded > diff singlethreaded multithreaded 39a40 > #define _REENTRANT 1 We're compiling multiple static libraries and applications that link with the static libraries, both libraries and application use pthreads. I believe it was required at some stage in the past but want to know if it is still required. Googling hasn't returned any recent information mentioning -D_REENTRANT with pthreads. Could you point me to links or references discussing the use in recent version of kernel/gcc/pthread? Clarification: At the moment we're using -D_REENTRANT and -lpthread, I assume I can replace them with just g++ -pthread, looking at man gcc it sets the flags for both preprocessor and linker. Any thoughts?

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• pthreads: reader/writer locks, upgrading read lock to write lock

  - by ScaryAardvark

  I'm using read/write locks on Linux and I've found that trying to upgrade a read locked object to a write lock deadlocks. i.e. // acquire the read lock in thread 1. pthread_rwlock_rdlock( &lock ); // make a decision to upgrade the lock in threads 1. pthread_rwlock_wrlock( &lock ); // this deadlocks as already hold read lock. I've read the man page and it's quite specific. The calling thread may deadlock if at the time the call is made it holds the read-write lock (whether a read or write lock). What is the best way to upgrade a read lock to a write lock in these circumstances.. I don't want to introduce a race on the variable I'm protecting. Presumably I can create another mutex to encompass the releasing of the read lock and the acquiring of the write lock but then I don't really see the use of read/write locks. I might as well simply use a normal mutex. Thx

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• split video (avi/h264) on keyframe

  - by m.sr

  Hallo. I have a big video file. ffmpeg, tcprobe and other tool say, it is an h264-stream in an AVI-container. Now i'd like to cut out small chunks form the video. Problem: The index of the video seam corrupted/destroyed. I kind of fixed this via mplayer -forceidx -saveidx <IndexFile> <BigVideoFile>. The Problem here is, that I'm now stuck with mplayer/mencoder which can use this index file via -loadidx <IndexFile>. I have tried correcting the index like described in man aviindex (mplayer -frames 0 -saveidx mpidx broken.avi ; aviindex -i mpidx -o tcindex ; avimerge -x tcindex -i broken.avi -o fixed.avi), but this didn't fix my video - meaning that most tools i've tested couldn't search in the video file. Problem: I sut out parts of the video via following command: mencoder -loadidx in.idx -ss 8578 -endpos 20 -oac faac -ovc x264 -sws 9 -lavfopts format=mp4 -x264encopts <LotsOfOpts> -of lavf -vf scale=800:-10,harddup in.avi -o out.mp4. Now here the problem is, that some videos are corrupted at the beginning. I think this is because the fact, that i do not necessarily cut at keyframe. Questions: What is the best way to fix the index of an avi "inline" so that every tool can again work as expected with it? How can i split at the keyframes? Is there an mencoder-option for this? Are Keyframes coming in a frequency? How to find out this frequency? (So with a bit of math it should be possible to calculate the next keyframe and cut there) Is ther perhaps some completely other way to split this movie? Doing it by hand is no option, i've to cut out 1000+ chunks ... Thanks a lot!

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• Phonegap Screenshot plugin in Cordova 2.0.0

  - by ObjectiveJ

  I have set up the screenshot plugin from github, located here: https://github.com/phonegap/phonegap-plugins/tree/master/Android/Screenshot I set it up as instructed and with 1.8.1 of cordova. It worked and the screenshot was saved to the phone. However it fails with cordova 2.0.0. Screenshot.java code: https://github.com/phonegap/phonegap-plugins/blob/master/Android/Screenshot/src/org/apache/cordova/Screenshot.java Screenshot.js code: https://github.com/phonegap/phonegap-plugins/blob/master/Android/Screenshot/www/Screenshot.js Due to the advice of a very clever man called Simon MacDonald, I removed line 31 and 38 from the JS file shown above. However when I try to use the screenshot plugin with cordova 2.0.0 I receive these errors: ERROR: org.json.JSONException: Value undefined of type java.lang.String cannot be converted to JSONArray. Error: Status=8 Message=JSON error file:///android_asset/www/cordova-2.0.0.js: Line 938 : Error: Status=8 Message=JSON error Error: Status=8 Message=JSON error at file:///android_asset_/www/cordova-2.0.0.js:938 line 938 of the cordova.js is: // If error, then display error else { console.log("Error: Status="+v.status+" Message="+v.message); but im almost certain this is a compatibility error. Does anyone know a fix for this, or even a reason. Im abit lost. Any help is appreciated. I call the screenshot.js with this code: function takeScreenShot() { cordovaRef.exec("Screenshot.saveScreenshot"); } Any help massively appreciated.

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