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  • PowerShell One Liner: Duplicating a folder structure in a Sharepoint document library

    - by Darren Gosbell
    I was asked by someone at work the other day, if it was possible in Sharepoint to create a set of top level folders in one document library based on the set of folders in another library. One document library has a set of top level folders that is basically a client list and we needed to create the same top level folders in another library. I knew that it was possible to open a Sharepoint document library in explorer using a UNC style path and that you could map a drive using a technique like this one: http://www.endusersharepoint.com/2007/11/16/can-i-map-a-document-library-as-a-mapped-drive/. But while explorer would let us copy the folders, it would also take all of the folder contents too, which was not what we wanted. So I figured that some sort of PowerShell script was probably the way to go and it turned out to be even easier than I thought. The following script did it in one line, so I thought I would post it here in my "online memory". :) dir "\\sharepoint\client documents" | where {$_.PSIsContainer} | % {mkdir "\\sharepoint\admin documents\$($_.Name)"} I use "dir" to get a listing from the source folder, pipe it through "where" to get only objects that are folders and then do a foreach (using the % alias) and call "mkdir".

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  • Linux webserver tutorials (WordPress)

    - by HannesFostie
    Hi I will be setting up a linux webserver to host WordPress on. The problem is that although I know how to do it, I don't know how to properly do it. So I'm now looking for semi-advanced tutorials that are complete and secure above anything else. I don't really mind trying a new distro, but I prefer ubuntu/debian. I read this post: Any good resources for setting up a webserver in Linux ? But these are very limited. So far not a lot of luck finding good guides and howtos. This should probably be a community wiki but I can't seem to transform it myself. Thanks

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  • Releasing an open source project without getting embarrassed

    - by Hopeful
    I've been working by myself on a fairly large open source project for quite a while and it's nearing the point where I'd like to release it. However, I'm self-taught and I don't really know anyone who could adequately review my project. A few years ago, I had released a small bit of code which pretty much got ripped apart (in a critical sense) on the forum where I released it. Even though the code worked, the criticism was accurate but brutal. It prompted me to begin searching for best practices for everything and in the end I feel that it made me a much better developer. I've gone over everything in my project so many times trying to make it perfect that I've lost count. I believe in my project and think it has the potential to help a lot of people and I feel like I've done some cool things in interesting ways with it. Still, because I'm self-taught, I can't help but wonder what gaps exist in my self-education. The way my code was ripped apart last time isn't something I'd like to repeat. I think my two biggest fears with releasing my project that I've poured countless hours into are being absolutely embarrassed because I missed some patently obvious things because of my self-education or, worse, releasing it to the sound of crickets. Is there anyone who has been in a similar situation? I'm not afraid of constructive criticism, so long as it is constructive and not just a rant on how I screwed up. I know there is a code review site on StackExchange, but it's not really set up for large projects and I didn't feel like the community there is large enough yet to get good feedback if I were to post parts of my project piecemeal (I tried with one file). What can I do to give my project at least some measure of success without getting embarrassed or devestated in the process?

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  • Duke's Choice Award Ceremony

    - by Tori Wieldt
    The 2012 Duke's Choice Awards winners and their creative, Java-based technologies and Java community contributions were honored after the Sunday night JavaOne keynotes. Sharat Chander, Group Director for Java Technology Outreach, presented the awards. "Having the community participate directly in both submission and selection truly shows how we are driving exposure of the innovation happening in the Java community," he said. Apache Software Foundation Hadoop Project The Apache Software Foundation’s Hadoop project, written in Java, provides a framework for distributed processing of big data sets across clusters of computers, ranging from a few servers to thousands of machines. This harnessing of large data pools allows organizations to better understand and improve their business. AgroSense Project Improving farming methods to feed a hungry world is the goal of AgroSense, an open source farm information management system built in Java and the NetBeans platform. AgroSense enables farmers, agribusinesses, suppliers and others to develop modular applications that will easily exchange information through a common underlying NetBeans framework. JDuchess Rather than focus on a specific geographic area like most Java User Groups (JUGs), JDuchess fosters the participation of women in the Java community worldwide. The group has more than 500 members in 60 countries, and provides a platform through which women can connect with each other and get involved in all aspects of the Java community. Jelastic, Inc. Moving existing Java applications to the cloud can be a daunting task, but startup Jelastic, Inc. offers the first all-Java platform-as-a-service (PaaS) that enables existing Java applications to be deployed in the cloud without code changes or lock-in. Liquid Robotics Robotics – Liquid Robotics is an ocean data services provider whose Wave Glider technology collects information from the world’s oceans for application in government, science and commercial applications. The organization features the “father of Java” James Gosling as its chief software architect. London Java Community The second user group receiving a Duke’s Choice Award this year, the London Java Community (LJC) and its users have been active in the OpenJDK, the Java Community Process (JCP) and other efforts within the global Java community. NATO The first-ever Community Choice Award goes to the MASE Integrated Console Environment (MICE) in use at NATO. Built in Java on the NetBeans platform, MICE provides a high-performance visualization environment for conducting air defense and battle-space operations. Parleys.com E-learning specialist Parleys.com, based in Brussels, Belgium, uses Java technologies to bring online classes and full IT conferences to desktops, laptops, tablets and mobile devices. Parleys.com has hosted more than 1,700 conferences—including Devoxx and JavaOne—for more than 800,000 unique visitors. Student Nokia Developer Group This year’s student winner, Ram Kashyap, is the founder and president of the Nokia Student Network, and was profiled in the “The New Java Developers” feature in the March/April 2012 issue of Java Magazine. Since then, Ram has maintained a hectic pace, graduating from the People’s Education Society Institute of Technology in Bangalore, India, while working on a Java mobile startup and training students on Java ME. United Nations High Commissioner for Refugees The United Nations High Commissioner for Refugees (UNHCR) is on the front lines of crises around the world, from civil wars to natural disasters. To help facilitate its mission of humanitarian relief, the UNHCR has developed a light-client Java application on the NetBeans platform. The Level One registration tool enables the UNHCR to collect information on the number of refugees and their water, food, housing, health, and other needs in the field, and combines that with geocoding information from various sources. This enables the UNHCR to deliver the appropriate kind and amount of assistance where it is needed. You can read more about the winners in the current issue of Java Magazine.

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  • Podcast Show Notes: Architect Day Panel Highlights

    - by Bob Rhubart
    The 2010 series of Oracle Technology Network Architect Day events kicked off in May with events in Dallas, Texas, Redwood Shores, California, and Anaheim, California. The centerpiece of each Architect Day event is a panel discussion that brings together the day's various presenters along with experts drawn from the local Oracle community. This week’s ArchBeat program presents highlights from the panel discussion from the event held in Anaheim. Listen The voices you’ll hear in these highlights belong to (listed in order of appearance): Ralf Dossmann: Director of SOA and Middleware in Oracle’s Enterprise Solutions Group LinkedIn | Oracle Mix Floyd Teter: Innowave Technology, Oracle ACE Director Blog | Twitter | LinkedIn | Oracle Mix | Oracle ACE Profile Basheer Khan: Innowave Technology, Oracle ACE Director Blog | Twitter | LinkedIn | Oracle Mix | Oracle ACE Profile Jeff Savit:  Oracle virtualization expert, former Sun Microsystems principal engineer Blog | LinkedIn | Oracle Mix Geri Born: Oracle security analyst LinkedIn | A 10-minute podcast can't really do justice to the hour-long panel discussion at each Architect Day event, let alone the discussion that is characteristic of each session throughout each Architect Day. But at least you’ll get a taste of what you’ll find at the live events. You’ll find slide decks and more from this first series of 2010 events in the Architect Day Artifacts post on this blog. More dates/cities will be added soon to the Architect Day schedule.  Coming Soon Next week’s ArchBeat program kicks off a three-part series featuring Cameron Purdy,  Oracle ACE Director Aleksander Seovic, and Oracle ACE John Stouffer in a conversation about data grid technology and Oracle Coherence. Stay tuned: RSS Technorati Tags: oracle,oracle technology network,archbeat,arch2arch,podcast,architect day del.icio.us Tags: oracle,oracle technology network,archbeat,arch2arch,podcast,architect day

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  • Why does eth0 show an IP if I'm booting into runlevel 1?

    - by banjer
    I'm having some issues with networking on a new Linux server I'm building. The OS is SLES 11. When booting into runlevel 1, I see that eth0 is showing an IP. Physically, there is a network cable plugged into the card associated with eth1, and then there is a network cable plugged into a QLogic iSCSI card (eth4, not shown). I've been troubleshooting this for awhile, and it seems like eth0 is somehow getting assigned an IP, even though it isn't configured in Linux or even plugged into the network for that matter. Thoughts? ifconfig -a Here is the ifconfig output (Sorry, I need more rep before I can post images on SF...)

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  • How to resolve SSPI context error without changing Service Account from MSSQL

    - by kockiren
    There is a issue while connecting from new Windows 8.1 Clients to SQL Server 2008 running on Windows Server 2008 R2. The SQL Service running under account Domain\mssqlservice on a machine thats works fine I get this output from setspn -l domain\mssqlservice C:\>setspn -l domain\mssqlservice Registrierte Dienstprinzipalnamen (SPN) für CN=MSSQLService,CN=Users,DC=domain, DC=local,DC=tld: MSSQLSvc/mssql.domain.local.tld:1433 MSSQLSvc/mssql.domain.local.tld MSSQLSERVER/mssql.domain.local.tld:1433 On a windows 8.1 machine that don't work I get this output: C:\>setspn -l domain\msssqlservice FindDomainForAccount: Fehler beim Aufrufen von DsGetDcNameWithAccountW mit dem R ückgabewert 0x0000054B. Konto kockiren wurde nicht gefunden. On this Post I found a solution but, I can't change the Service Account who runs the SQL Service. Some application need this service delegation. But how I can realize that it works on my Windows 8.1 Clients?

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  • moving from wpf to html5

    - by HighCore
    I don't even know if this is the right StackExchange site to post this question. If it isn't, please excuse me and please let me know which would be the right one. I am an experienced WPF developer, and I seriously love the technology. I feel pretty good when working with XAML, bindings, templates, triggers, MVVM and all the WPF world of goodness. Now I have recieved a job offer which surpasses my current salary by 50%. It a position to work as a C# developer in an ASP.Net MVC4 + HTML5 project. I have never EVER in my whole life worked with ASP.Net, nor HTML and I never ever did a web page or web application before. I certainly find myself worried that I will lose all the comfort and joy I live every day coding in WPF. And in the other hand I understand and have seen in these 3/4 months of job hunting that there's a LOT of ASP.Net and really really little or no WPF in the job market (at least here), so I somehow feel forced towards it. So, my question is: Can anybody who had to go thru this type of change tell me the pros and cons of working with these technologies from a developer's perspective? I don't care about open-source / non-microsoft or non-desktop, I care about REAL development experience in every day working with these techs, and whether ASP.Net MVC 4 + HTML + JS is as crappy as I think it is comparing it to WPF.

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  • Need help understanding XNA 4.0 BoundingBox vs BoundingSphere Intersection

    - by nerdherd
    I am new to both game programming and XNA, so I apologize if I'm missing a simple concept or something. I have created a simple 3D game with a player and a crate and I'm working on getting my collision detection working properly. Right now I am using a BoundingSphere for my player, and a BoundingBox for the crate. For some reason, XNA only detects a collision when my player's sphere touches the front face of the crate. I'm rendering all the BoundingSpheres and BoundingBoxes as wire frames so I can see what's going on, and everything visually appears to be correct, but I can't figure out this behavior. I have tried these checks: playerSphere.Intersects(crate.getBoundingBox()) playerSphere.Contains(crate.getBoundingBox(), ContainmentType.Intersects) playerSphere.Contains(crate.getBoundingBox()) != ContainmentType.Disjoint But they all seem to produce the same behavior (in other words, they are only true when I hit the front face of the crate). The interesting thing is that when I use a BoundingSphere for my crate the collision is detected as I would expect, but of course this makes the edges less accurate. Any thoughts or ideas? Have I missed something about how BoundingSpheres and BoundingBoxes compute their intersections? I'd be happy to post more code or screenshots to clarify if needed. Thanks!

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  • mediatomb fails with "respawning too fast, stopped"

    - by felix
    When I try to start mediatomb it fails. I see this in dmesg [...] [916349.374331] init: mediatomb main process ended, respawning [916349.394462] init: mediatomb main process (880) terminated with status 1 [916349.394512] init: mediatomb main process ended, respawning [916349.414598] init: mediatomb main process (882) terminated with status 1 [916349.414647] init: mediatomb respawning too fast, stopped My current /etc/init/mediatomb.conf looks like this. description "MediaTomb UPnP media server" author "Daniel van Vugt <vanvugt in launchpad>" start on (local-filesystems and net-device-up IFACE!=lo) stop on runlevel [!2345] respawn env CONFIGXML=/etc/mediatomb/config.xml env LOGFILE=/var/log/mediatomb.log env DEFAULT=/etc/default/mediatomb script [ -r $DEFAULT ] && . $DEFAULT [ ! $USER ] && USER=root [ ! $GROUP ] && GROUP=$USER if [ -n "$INTERFACE" ]; then INTERFACE_ARG="-e $INTERFACE" $ROUTE_ADD $INTERFACE fi exec mediatomb \ -c $CONFIGXML \ -u $USER \ -g $GROUP \ -l $LOGFILE \ $INTERFACE_ARG \ $OPTIONS end script post-stop script [ -r $DEFAULT ] && . $DEFAULT if [ -n "$INTERFACE" ]; then $ROUTE_DEL $INTERFACE fi end script

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  • Configuring Weblogic Server 10.3.6 from 32-bit mode to 64-bit mode

    - by Ekta Malik
    This post pertains to the configuration of Weblogic Server from 32-bit mode to 64-bit mode on Solaris OS. Just in case, you have WLS 10.3.6 running in 32-bit mode and the JDK being used is installed for 64-bit mode [On Solaris OS, JDK 64-bit installation comprises of installing 32-bit JDK followed by a patch for 64-bit JDK].  Verification of the mode being used One can verify the mode of Weblogic Server in the following ways Either check the commonEnv.sh script located at $MIDDLEWARE_HOME/wlserver_10.3/common/bin where $MIDDLEWARE_HOME refers to the install directory of Middleware. Look for the patterns - SUN_ARCH_DATA_MODEL and JAVA_USE_64BIT in the file. For 32-bit mode, the parameters would appear as shown belowSUN_ARCH_DATA_MODEL="32"JAVA_USE_64BIT=false Check the server console logs; which JDK is being used during start-up By checking which JDK is used by the running process of Weblogic Server Configuration Steps Take a backup of the commonEnv.sh script located at $MIDDLEWARE_HOME/wlserver_10.3/common/bin where $MIDDLEWARE_HOME refers to the install directory of Middleware Modify the commonEnv.sh script for the following parameters: The values should be 64 and true respectively for 64-bit modeSUN_ARCH_DATA_MODEL="64"JAVA_USE_64BIT=true  Restart the weblogic server. One can confirm that the JDK being used is 64-bit by looking at the Weblogic console logs during server start up or by looking at the running process.

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  • May I'm infected?

    - by aiacet
    Hello again to everyone and many thanks to all the expert that will read this post and proupose a solution to my problem. In the last tw week, when i saw with MPC-HC (media player classic home cinema) some "justyfied" episodes, my F-Secure Client Security antivirus software alert-me that there is a threat in A0027132.exe file (the number still chanhe and increase each time, 3, that the antivir found a new threat). All this three threat are now quaratined and the file are: 1) C:/System Volume Information/_restore/{72AACB12-6526-40F2-81D7-69DF5809DD8A}\A0027132.exe 2) D:/System Volume Information/_restore/{72AACB12-6526-40F2-81D7-69DF5809DD8A}\A0027133.exe 3) D:/System Volume Information/_restore/{72AACB12-6526-40F2-81D7-69DF5809DD8A}\A0027134.exe the three threat are recognized like: 1) Backdoor.Generic.360086 2) Trojan.Packed.8707 2) Trojan.Packed.8807 The F-secure and the OS are both udpated at the last release/virus definition. Waiting for an answer, thanks in advance

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  • basic beginning emacs questions - install latest version and pick appropriate UI

    - by MountainX
    I'm running the latest Kubuntu (12.04 beta 2) and I would like to run the latest emacs (currently v24). The repos are one version behind. What's the best way to install v24 or later (and avoid future version conflicts)? Also, is there any reason not to aways use the GUI version of emacs if X is running? For example, could I set the GUI emacs version as the default text editor and use it to edit cron jobs (crontab -e)? I'm assuming the answer is yes, but since I haven't done that yet (my default editor is nano), I want to check if there are reasons I should leave nano as the default editor. Usually when I'm working on the command line I end up using nano. Now that I think about it, I have no idea why I keep doing that. Is there any downside to calling a GUI editor when working in an X terminal? EDIT: I briefly tested these two versions GNU Emacs 24.0.94.1 (x86_64-pc-linux-gnu, GTK+ Version 3.3.20) from GNU Emacs 23.3.1 (x86_64-pc-linux-gnu) installed by default in Kubuntu. This post explains some of the differences between versions. Unfortunately (for me) the defaults installed version (23.3.1, 23.3+1-1ubuntu9) is the nox version. Package: emacs23-nox Status: install ok installed Version: 23.3+1-1ubuntu9 Replaces: emacs23, emacs23-gtk, emacs23-lucid The package with version 24 opens in GUI mode by default. That's what I prefer. Some of the version 24 changes that interest me are listed in the references below. But there appear to be a multitude of different packages and versions I could install. References: What’s New In Emacs 24 (part 1) | Mastering Emacs http://www.masteringemacs.org/articles/2011/12/06/what-is-new-in-emacs-24-part-1/ " shell-mode uses pcomplete rules, with the standard completion UI. Yowzah! There’s a lot of cool, new functionality hidden away in this gem of a change." EmacsWiki: Recent Changes http://www.emacswiki.org/emacs/?action=rc;showedit=0

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  • Taking our Friendships to the next level.

    - by RedAndTheCommunity
    Red Gate have been running the Friends of Red Gate program for years now, and over that time we've built some great relationships with some truly awesome members of the SQL and .NET communities. When I took over the running of the program from Annabel in 2011, I was overwhelmed by the enthusiasm and commitment of our Friends. There were just so many of them, however, that it was hard to make the most of the relationships we had with people, and I wanted to fix that. I decided to survey all our Friends, to find out what they wanted to get out of, and put into, being in the Friends of Red Gate (FoRG) program. From the results of that survey, I identified 30 FoRGs that were really willing and able to go that step further to help Red Gate improve their tools, improve their relationship with the community, and improve the Friends of Red Gate program. Those 30 Friends of Red Gate have been awarded 'FoRG+' status. That means they'll: Have a closer relationship with the product teams, by getting involved in projects Have even more access to the inside track about the tools they're interested in Get the opportunity to come visit us at the Red Gate office and really influence the development of the tools. Plus more, depending on how the individual FoRG+ wants to work with us. This doesn't mean I've forgotten our other Friends; I'm working on ways to improve their experience of the Friends of Red Gate program. I'll write about them in another post. If you're an existing Friend of Red Gate, and you're interested in finding out how to get involved in the FoRG+ program, then I'd love to chat to you. For anyone that's interested in joining the Friend of Red Gate program, take a look at the web page dedicated to the program, and get in touch at [email protected] to be put on the waiting list for our 2013 program.

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  • SSH onto Ubuntu box using RSA keys

    - by jex
    I recently installed OpenSSH on one of my Ubuntu machines and I've been running into problems getting it to use RSA keys. I've generated the RSA key on the client (ssh-keygen), and appended the public key generated to both the /home/jex/.ssh/authorized_keys and /etc/ssh/authorized_keys files on the server. However, when I try to login (ssh -o PreferredAuthorizations=publickey jex@host -v [which forces the use of public key for login]) I get the following output: debug1: Host 'pentheon.local' is known and matches the RSA host key. debug1: Found key in /home/jex/.ssh/known_hosts:2 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received Banner message debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Next authentication method: publickey debug1: Offering public key: /home/jex/.ssh/id_rsa debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Trying private key: /home/jex/.ssh/identity debug1: Trying private key: /home/jex/.ssh/id_dsa debug1: No more authentication methods to try. Permission denied (publickey,keyboard-interactive). I'm not entirely sure where I've gone wrong. I am willing to post my /etc/ssh/sshd_config if needed.

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  • SQL SERVER – A Cool Trick – Restoring the Default SQL Server Management Studio – SSMS

    - by pinaldave
    “I do not know where my windows went!” “I just closed my object explorer and now I cannot find it.” “How do I get my original windows layout back in SQL Server Management Studio?” “How do I get the window which was there in left side back again?” Since last 2-3 years, every single day I receive more than 5 emails on SSMS and its layout. For the beginners it is very common to get confused when they attempt to change SQL Server Management Studio’s windows layout. They often change the layout and are not able to get the original layout back. Often people do not change the layout whole of their life, leading to uncomfortable feeling when they go to another’s computer where the windows are differently placed. Today’s blog post is dedicated all the beginners in SQL Server. It is extremely simple to reset the SSMS layout to default layout. The default layout involves 2 major things 1) Object Explorer on left side 2) Query Windows on right side (80% screen estate). Personally I am so used to this as well that if there is any other changes in the same, I do not enjoy working on the environment. Well, the solution to rest the SSMS layout is very simple. One can do it in split seconds.  To restore the default configuration, on the Window menu, click Reset Window Layout. Have you ever used this feature? Do you feel uncomfortable when SSMS layout is not in default state? How do you address this situation? Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Server Management Studio, SQL Tips and Tricks, T SQL, Technology

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  • A good tool for browser automation/client-side Web scripting

    - by hardmath
    I'm interested in adopting a tool/scripting language to automate some daily tasks connected with fighting forum spammers. A brief overview of these tasks: analyze new registrations and posts on a phpBB forum, and delete or deactivate spammers using a website/community that collects such spam reports. Typically such automation is integrated into the phpBB installation itself, which certainly has its advantages. My approach has the advantage of independent operation, etc. One way to think about this is in terms of browser automation. I've used iOpus iMacros for Firefox (the free version) in the past to respond to individual spammers, but current attacks are highly distributed. My "logic" for pigeonholing spammers vs. nonspammers seems beyond the easy reach of the free version of iMacros. From a more technical perspective one can think about dispensing with the browser altogether and programming GET/POST requests directed to my forum and other Web-based resources. I'm familiar with some scripting languages like Ruby and Lua, but I could be persuaded that a compiled application is better suited for these tasks. However in my experience the dynamic flexibility of interpreted environments is very useful in prototyping and debugging the application logic. So I'm leaning in the direction of scripting languages. Among browsers I favor Firefox and Chrome. I use both Windows and Linux platforms, and if the tool can adapt to an Android platform, it would make a neat demonstration of skills, yes? Thanks in advance for your suggestions!

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  • Deploy code to Windows Azure from Dropbox

    - by Gopinath
    There is a lot of innovation happening at Windows Azure team these days under the leadership of ScottGu. The recent updates to Windows Azure published couple of days ago allows us to deploy code to Windows Azure websites straight from Dropbox. It’s very easy and simple to use. Authorize Windows Azure account to talk to Dropbox and whenever you want to deploy latest code from Dropbox just click it button. Boom! The latest code from Dropbox will be automatically deployed on Windows Azure. Everything works like magic. Wow, isn’t this a cool feature for those who don’t want to maintain their version control systems like Git, Svn or TFS? This is a big deal to many developers who maintain their personal websites source code on Dropbox. Wondering why developers maintain their source code in Dropbox? It’s easy to use Dropbox(zero learning curve) and setting up a source control systems demands lot of administrative activities as well as money for hosting them. Here is a quick walk through of deploying code to Windows Azure from Dropbox. Though I’m not going to user this feature for deploying code of my website coziie.com (I’ve a personal SVN server hosted), I’m going to recommend to all my friends who maintain their source code on Dropbox.  For more details read the detailed post on ScottGu’s blog.

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  • Who is code wanderer?

    - by DigiMortal
    In every area of life there are people with some bad habits or misbehaviors that affect the work process. Software development is also not free of this kind of people. Today I will introduce you code wanderer. Who is code wanderer? Code wandering is more like bad habit than serious diagnose. Code wanderers tend to review and “fix” source code in files written by others. When code wanderer has some free moments he starts to open the code files he or she has never seen before and starts making little fixes to these files. Why is code wanderer dangerous? These fixes seem correct and are usually first choice to do when considering nice code. But as changes are made by coder who has no idea about the code he or she “fixes” then “fixing” usually ends up with messing up working code written by others. Often these “fixes” are not found immediately because they doesn’t introduce errors detected by compilers. So these “fixes” find easily way to production environments because there is also very good chance that “fixed” code goes through all tests without any problems. How to stop code wanderer? The first thing is to talk with person and explain him or her why those changes are dangerous. It is also good to establish rules that state clearly why, when and how can somebody change the code written by other people. If this does not work it is possible to isolate this person so he or she can post his or her changes to code repository as patches and somebody reviews those changes before applying them.

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  • Timeout Considerations for Solicit Response

    - by Michael Stephenson
    Background One of the clients I work with had been experiencing some issues for a while surrounding web service timeouts.  It's been a little challenging to work through the problems due to limitations in the diagnostic information available from one of the applications, but I learned some interesting things while troubleshooting the problem which don't seem to have been discussed much in the community so I thought I'd share my findings. In the scenario we have BizTalk trying to make calls to a .net web service which was exposed as a WSE 2 endpoint.  In the process BizTalk will try to make a large number of concurrent web service calls to the application, and the backend application has more than enough infrastructure and capability to handle the load. We have configured the <ConnectionManagement> section of the BizTalk configuration file to support up to 100 concurrent connections from each of our 2 BizTalk send servers to the web servers of the application. The problem we were facing was that the BizTalk side was reporting a significant number of timeouts when calling the web service.   One of the biggest issues was the challenge of being able to correlate a message from BizTalk to the IIS log in the .net application and the custom logs in the application especially when there was a fairly large number of servers hosting the web services.  However the key moment came when we were able to identify a specific call which had taken 40 seconds to execute on the server (yes a long time I know but that's a different story!).  Anyway we were able to identify that this had timed out on the BizTalk side.  Based on the normal 2 minute timeout we knew something unexpected was going on. From here I decided to do some experimentation and I wanted to start outside of BizTalk because my hunch was this was not a BizTalk behaviour but something which was being highlighted by BizTalk because of our large load.     Server-side - Sample Web Service To begin with I created a sample web service.  Nothing special just a vanilla asmx web service hosted in IIS6 on Windows 2003 Standard Edition.  The web service is just a hello world style web service as shown in the below picture.  The only key feature is that the server side web method has a 30 second sleep in it and will trace out some information before and after the thread is set to sleep.      In the configuration for this web service there again is nothing special it's pretty much the most plain simple web service you could build. Client-Side To begin looking at what was happening with our example I created a number of different ways to consume the web service. SoapHttpClientProtocol Example I created a small application which would use a normal proxy generated to call the web service.  It would iterate around a loop and make calls using the begin/end methods so I can do this asynchronously.  I would do a loop of 20 calls with the ConnectionManager configuration section supporting only 5 concurrent connections to the server.     <connectionManagement> <remove address="*"/> <add address = "*" maxconnection = "12" /> <add address = "http://<ServerName>" maxconnection = "5" />                         </connectionManagement> </system.net>     The below picture shows an example of the service calling code, key points are: I have configured the timeout of 40 seconds for the proxy I am using the asynchronous methods on the proxy to call the web service         The Test I would run the client and execute 21 calls to the web service.   The Results  Below is the client side trace showing what's happening on the client. In the below diagram is the web service side trace showing what's happening on the server Some observations on the results are: All of the calls were successful from the clients perspective You could see the next call starting on the server as soon as the previous one had completed Calls took significantly longer than 40 seconds from the start of our call to the return. In fact call 20 took 2 minutes and 30 seconds from the perspective of my code to execute even though I had set the timeout to 40 seconds     WSE 2 Sample In the second example I used the exact same code to call the web service again with a single exception that I modified the web service proxy to derive from WebServiceClient protocol which is part of WSE 2 (using SP3).  The below picture shows the basic code and the key points are: I have configured the timeout of 40 seconds for the proxy I am using the asynchronous methods on the proxy to call the web service        The Test This test would execute 21 calls from the client to the web service.   The Results  The below trace is from the client side: The below trace is from the server side:   Some observations on the trace results for this scenario are: With call 4 if you look at the server side trace it did not start executing on the server for a number of seconds after the other 4 initial calls which were accepted by the server. I re-ran the test and this happened a couple of times and not on most others so at this point I'm just putting this down to something unexpected happening on the development machine and we will leave this observation out of scope of this article. You can see that the client side trace statement executed almost immediately in all cases All calls after the initial few calls would timeout On the client side the calls that did timeout; timed out in a longer duration than the 40 seconds we set as the timeout You can see that as calls were completing on the server the next calls were starting to come through The calls that timed out on the client did actually connect to the server and their server side execution completed successfully     Elaboration on the findings Based on the above observations I have drawn the below sequence diagram to illustrate conceptually what is happening.  Everything except the final web service object is on the client side of the call. In the diagram below I've put two notes on the Web Service Proxy to show the two different places where the different base classes seem to start their timeout counters. From the earlier samples we can work out that the timeout counter for the WSE web service proxy starts before the one for the SoapHttpClientProtocol proxy and the WSE one includes the time to get a connection from the pool; whereas the Soap proxy timeout just covers the method execution. One interesting observation is if we rerun the above sample and increase the number of calls from 21 to 100,000 then for the WSE sample we will see a similar pattern where everything after the first few calls will timeout on the client as soon as it makes a connection to the server whereas the soap proxy will happily plug away and process all of the calls without a single timeout. I have actually set the sample running overnight and this did happen. At this point you are probably thinking the same thoughts I was at the time about the differences in behaviour and which is right and why are they different? I'm not sure there is a definitive answer to this in the documentation, or at least not that I could find! I think you just have to consider that they are different and they could have different effects depending on your messaging solution. In lots of situations this is just not an issue as your concurrent requests doesn't get to the situation where you end up throttling the web service calls on the client side, however this is definitely more common with an integration broker such as BizTalk where you often have high throughput requirements.  Some of the considerations you should make Based on this behaviour you should be aware of the following: In a .net application if you are making lots of concurrent web service calls from an application in an asynchronous manner your user may thing they are experiencing poor performance but you think your web service is working well. The problem could be that the client will have a default of 2 connections to remote servers so you should bear this in mind When you are developing a BizTalk solution or a .net solution with the WSE 2 stack you may experience timeouts under load and throttling the number of connections using the max connections element in the configuration file will not help you For an application using WSE2 or SoapHttpClientProtocol an expired timeout will not throw an error until after a connection to the server has been made so you should consider this in your transaction and durability patterns     Our Work Around In the short term for our specific scenario we know that we can handle this by just increasing our timeout value.  There is only a specific small window when we get lots of concurrent traffic that causes this scenario so we should be able to increase the timeout to take into consideration the additional client side wait, and on the odd occasion where we do get a timeout the BizTalk send port retry will handle this. What was causing our original problem was that for that short window we were getting a lot of retries which significantly increased the load on our send servers and highlighted the issue.  Longer Term Solution As a longer term solution this really gives us more ammunition to argue a migration to WCF. The application we are calling has some factors which limit the protocols we can use but with WCF we would have more control on the various timeout options because in WCF you can configure specific parts of the timeout. Summary I've had this blog post on my to do list for ages but hopefully it will be useful to some people to just understand this behaviour and to possibly help you with some performance issues you may have. I do not believe there is too much in the way of documentation particularly around WSE2 and ASMX in this area so again another bit of ammunition for migrating to WCF. I'll try to do a follow up post with the sample for WCF to show how this changes things.

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  • Validar Textbox para aceptar solo n&uacute;meros

    - by Jason Ulloa
    Una de las necesidades más habituales en el desarrollo es poder validar los controles Textbox para que solo acepten valore numéricos. En este post eso es lo que haremos, nos apoyaremos en el lenguaje javascript para validar nuestro textbox del lado del cliente. Nuestro primer paso será crear la función JavaScript que hará el trabajo, para ello agregamos las etiquetas de javascript <script type="text/javascript"> </script> Posteriormente dentro de esas etiquetas agregaremos el script que hará el trabajo function ValidNum(e) { var tecla= document.all ? tecla = e.keyCode : tecla = e.which; return ((tecla > 47 && tecla < 58) || tecla == 46); } Por último iremos al code behind de la página y en el evento Load agregaremos un nuevo evento al textbox para que reconozca el script. protected void Page_Load(object sender, EventArgs e) { TextBox1.Attributes.Add("onkeypress", "javascript:return ValidNum(event);"); } Con esto, tenemos el textbox validado para aceptar solo números y el punto.

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  • Reflector Pro has now been released!

    - by CliveT
    After moving into the .NET division in May , and having a great time working on Reflector, I'm pleased to say that the results of that work are now available. Reflector Pro has now been released! The old Reflector as you know and love it is still available free of charge, and as part of this project we've fixed a number of bugs in the de-compilation that have been around for a long time. The Pro version comes as an add-in for Visual Studio - this offers dynamic de-compilation and generation of pdb files which allow you to step into the de-compiled code. Alex has some good pictures of this functionality on his beta post from around a month ago. Thanks to the other guys who've worked on this for taking me along for the ride - Alex, Andrew, Bart and Jason. Stephen did some great usability work, Chris Alford did some great technical authoring and Laila handled the launch publicity. Like all projects, there's always more I'd like to have done, but what we have looks like a pretty powerful addition to the developer's set of tools to me. Please try it and give us feedback on the forum.

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  • Identity Propagation for Web Service - 11g

    - by Prakash Yamuna
    I came across this post from Beimond on how to do identity propagation using OWSM.As I have mentioned in the past here, here and here - Beimond has a number of excellent posts on OWSM. However I found one part of his comment puzzling. I quote: "OWSM allows you to pass on the identity of the authenticated user to your OWSM protected web service ( thanks to OPSS ), this username can then be used by your service. This will work on one or between different WebLogic domains. Off course when you don't want to use OWSM you can always use Oracle Access Manager OAM which can do the same." The sentence in red highlights the issue i find puzzling. In fact I just discussed this particular topic recently here. So let me try and clarify on a few points: a) OAM is used for Web SSO. b) OWSM is used for securing Web Services. You cannot do identity propagation using OAM for Web Services. c) You use SAML to do identity propagation across Web Services. OAM also supports SAML - but that is the browser profile of SAML relevant in the context of Web SSO and is not related to the SAML Token Profile defined as part of the WS-Security spec.

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  • Introduction to LinqPad Driver for StreamInsight 2.1

    - by Roman Schindlauer
    We are announcing the availability of the LinqPad driver for StreamInsight 2.1. The purpose of this blog post is to offer a quick introduction into the new features that we added to the StreamInsight LinqPad driver. We’ll show you how to connect to a remote server, how to inspect the entities present of that server, how to compose on top of them and how to manage their lifetime. Installing the driver Info on how to install the driver can be found in an earlier blog post here. Establishing connections As you click on the “Add Connection” link in the left pane you will notice that now it’s possible to build the data context automatically. The new driver appears as an option in the upper list, and if you pick it you will open a connection dialog that lets you connect to a remote StreamInsight server. The connection dialog lets you specify the address of the remote server. You will notice that it’s possible to pick up the binding information from the configuration file of the LinqPad application (which is normally in the same folder as LinqPad.exe and is called LinqPad.exe.config). In order for the context to be generated you need to pick an application from the server. The control is editable hence you can create a new application if you don’t want to make changes to an existing application. If you choose a new application name you will be prompted for confirmation before this gets created. Once you click OK the connection is created and you can start issuing queries against the remote server. If there’s any connectivity error the connection is marked with a red X and you can see the error message informing you what went wrong (i.e., the remote server could not be reached etc.). The context for remote servers Let’s take a look at what happens after we are connected successfully. Every LinqPad query runs inside a context – think of it as a class that wraps all the code that you’re writing. If you’re connecting to a live server the context will contain the following: The application object itself. All entities present in this application (sources, sinks, subjects and processes). The picture below shows a snapshot of the left pane of LinqPad after a successful connection. Every entity on the server has a different icon which will allow users to figure out its purpose. You will also notice that some entities have a string in parentheses following the name. It should be interpreted as such: the first name is the name of the property of the context class and the second name is the name of the entity as it exists on the server. Not all valid entity names are valid identifier names so in cases where we had to make a transformation you see both. Note also that as you hover over the entities you get IntelliSense with their types – more on that later. Remoting is not supported As you play with the entities exposed by the context you will notice that you can’t read and write directly to/from them. If for instance you’re trying to dump the content of an entity you will get an error message telling you that in the current version remoting is not supported. This is because the entity lives on the remote server and dumping its content means reading the events produced by this entity into the local process. ObservableSource.Dump(); Will yield the following error: Reading from a remote 'System.Reactive.Linq.IQbservable`1[System.Int32]' is not supported. Use the 'Microsoft.ComplexEventProcessing.Linq.RemoteProvider.Bind' method to read from the source using a remote observer. This basically tells you that you can call the Bind() method to direct the output of this source to a sink that has to be defined on the remote machine as well. You can’t bring the results to the LinqPad window unless you write code specifically for that. Compose queries You may ask – what's the purpose of all that? After all the same information is present in the EventFlowDebugger, why bother with showing it in LinqPad? First of all, What gets exposed in LinqPad is not what you see in the debugger. In LinqPad we have a property on the context class for every entity that lives on the server. Because LinqPad offers IntelliSense we in fact have much more information about the entity, and more importantly we can compose with that entity very easily. For example, let’s say that this code creates an entity: using (var server = Server.Connect(...)) {     var a = server.CreateApplication("WhiteFish");     var src = a         .DefineObservable<int>(() => Observable.Range(0, 3))         .Deploy("ObservableSource"); If later we want to compose with the source we have to fetch it and then we can bind something to     a.GetObservable<int>("ObservableSource)").Bind(... This means that we had to know a bunch of things about this: that it’s a source, that it’s an observable, it produces a result with payload Int32 and it’s named “ObservableSource”. Only the second and last bits of information are present in the debugger, by the way. As you type in the query window you see that all the entities are present, you get IntelliSense support for them and it’s much easier to make sense of what’s available. Let’s look at a scenario where composition is plausible. With the new programming model it’s possible to create “cold” sources that are parameterized. There was a way to accomplish that even in the previous version by passing parameters to the adapters, but this time it’s much more elegant because the expression declares what parameters are required. Say that we hover the mouse over the ThrottledSource source – we will see that its type is Func<int, int, IQbservable<int>> - this in effect means that we need to pass two int parameters before we can get a source that produces events, and the type for those events is int – in the particular case of my example I had the source produce a range of integers and the two parameters were the start and end of the range. So we see how a developer can create a source that is not running yet. Then someone else (e.g. an administrator) can pass whatever parameters appropriate and run the process. Proxy Types Here’s an interesting scenario – what if someone created a source on a server but they forgot to tell you what type they used. Worse yet, they might have used an anonymous type and even though they can refer to it by name you can’t figure out how to use that type. Let’s walk through an example that shows how you can compose against types you don’t need to have the definition of. This is how we can create a source that returns an anonymous type: Application.DefineObservable(() => Observable.Range(1, 10).Select(i => new { I = i })).Deploy("O1"); Now if we refresh the connection we can see the new source named O1 appear in the list. But what’s more important is that we now have a type to work with. So we can compose a query that refers to the anonymous type. var threshold = new StreamInsightDynamicDriver.TypeProxies.AnonymousType1_0<int>(5); var filter = from i in O1              where i > threshold              select i; filter.Deploy("O2"); You will notice that the anonymous type defined with this statement: new { I = i } can now be manipulated by a client that does not have access to it because the LinqPad driver has generated another type in its stead, named StreamInsightDynamicDriver.TypeProxies.AnonymousType1_0. This type has all the properties and fields of the type defined on the server, except in this case we can instantiate values and use it to compose more queries. It is worth noting that the same thing works for types that are not anonymous – the test is if the LinqPad driver can resolve the type or not. If it’s not possible then a new type will be generated that approximates the type that exists on the server. Control metadata In addition to composing processes on top of the existing entities we can do other useful things. We can delete them – nothing new here as we simply access the entities through the Entities collection of the application class. Here is where having their real name in parentheses comes handy. There’s another way to find out what’s behind a property – dump its expression. The first line in the output tells us what’s the name of the entity used to build this property in the context. Runtime information So let’s create a process to see what happens. We can bind a source to a sink and run the resulting process. If you right click on the connection you can refresh it and see the process present in the list of entities. Then you can drag the process to the query window and see that you can have access to process object in the Processes collection of the application. You can then manipulate the process (delete it, read its diagnostic view etc.). Regards, The StreamInsight Team

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  • How do i find out what's preventing delete requests from working in iis7.5 and iis8?

    - by Simon
    Our site has an MVC Rest API. Recently, both the live servers and my development machine stopped accepting DELETE requests, instead returning a 501 Not Implemented response. On my development machine, which is Windows 7 running IIS7.5, the solution was to add these lines to our Web.config, under system.webServer / handlers: <remove name="ExtensionlessUrlHandler-Integrated-4.0" /> ... <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE" type="System.Web.Handlers.TransferRequestHandler" resourceType="Unspecified" requireAccess="Script" preCondition="integratedMode,runtimeVersionv4.0" /> However, this didn't work on any of our live servers; not on Sever 2008 + IIS7.5 and not on Server 2012 + IIS8. There are no verbs set up in Request Filtering, and WebDAV is not installed on any of our live servers. The error page gives no further information, and nothing gets recorded in the logs. How do I find out what's preventing DELETE requests from working in iis7.5 and iis8?

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