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  • "SessionId doesn't exist" error when starting Selenium server

    - by ripper234
    I'm raising a Selnium-server (the jar), and getting this exception without trying to talk to the server. What can be the cause? The errors keep coming in once every 2 seconds. Could this be some leftover from a previous Selenium run? C:\Foo>java -jar ..\..\..\..\lib\Selenium\selenium-server.jar 14:53:30.141 INFO - Java: Sun Microsystems Inc. 14.2-b01 14:53:30.142 INFO - OS: Windows Server 2008 6.1 amd64 14:53:30.149 INFO - v1.0.1 [2696], with Core v@VERSION@ [@REVISION@] 14:53:30.209 INFO - Version Jetty/5.1.x 14:53:30.210 INFO - Started HttpContext[/selenium-server/driver,/selenium-server/driver] 14:53:30.211 INFO - Started HttpContext[/selenium-server,/selenium-server] 14:53:30.211 INFO - Started HttpContext[/,/] 14:53:30.217 INFO - Started SocketListener on 0.0.0.0:4444 14:53:30.218 INFO - Started org.mortbay.jetty.Server@2747ee05 14:53:31.729 INFO - Checking Resource aliases 14:53:31.735 WARN - POST /selenium-server/driver/?seleniumStart=true&localFrameAddress=top&seleniumWindowName= &uniqueId=sel_27224&sessionId=1f2385b8bae24f6fb79816753de7cd69&counterToMakeURsUniqueAndSoStopPageCachingInThe Browser=1255006411692&sequenceNumber=268 HTTP/1.1 java.lang.RuntimeException: sessionId 1f2385b8bae24f6fb79816753de7cd69 doesn't exist; perhaps this session was already stopped? at org.openqa.selenium.server.FrameGroupCommandQueueSet.getQueueSet(FrameGroupCommandQueueSet.java:218 ) at org.openqa.selenium.server.SeleniumDriverResourceHandler.handleBrowserResponse(SeleniumDriverResour ceHandler.java:159) at org.openqa.selenium.server.SeleniumDriverResourceHandler.handle(SeleniumDriverResourceHandler.java: 127) at org.mortbay.http.HttpContext.handle(HttpContext.java:1530) at org.mortbay.http.HttpContext.handle(HttpContext.java:1482) at org.mortbay.http.HttpServer.service(HttpServer.java:909) at org.mortbay.http.HttpConnection.service(HttpConnection.java:820) at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:986) at org.mortbay.http.HttpConnection.handle(HttpConnection.java:837) at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:245) at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357) at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)

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  • .NET Framework installation requirements

    - by Paja
    What are the requirements for all .NET frameworks and their service packs? This is what I need to know for all available frameworks: .NET Framework prerequisites What other .NET Frameworks does it require? For example: .NET Framework 2.0 does not require anything, .NET Framework 2.0 SP1 requires .NET Framework 2.0 installed, but .NET Framework 3.5 SP1 does not require .NET Framework 3.5 installed (or maybe does? dunno) Reboot requirements Does the installation package require reboot after installation? Clean install requirements Does the installation package require clean install? (No pending delete/rename operations) Administrator privileges Does the installation package require administrator privileges to install? (I guess this is "yes" for all of them...) And I need to know all of this for the following packages: .NET Framework 1.1 .NET Framework 1.1 Language Pack .NET Framework 1.1 SP 1 .NET Framework 2.0 .NET Framework 2.0 Language Pack .NET Framework 2.0 SP 1 .NET Framework 2.0 SP 1 Language Pack .NET Framework 2.0 SP 2 .NET Framework 2.0 SP 2 Language Pack .NET Framework 3.5 .NET Framework 3.5 Language Pack .NET Framework 3.5 SP 1 .NET Framework 3.5 SP 1 Language Pack .NET Framework 4.0 Full .NET Framework 4.0 Client Could you please either tell me all of these requirements, or direct me to the appropriate source? Or maybe both? :-)

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  • what does "Net user administrator /active:yes" do to a computer?

    - by Rees
    i just purchased a new laptop and had some issues with it... I called tech support and they had me run this command in cmd prompt by right clicking the cmd icon and selecting "run as administrator" with root C:\windows\system32: "Net user administrator /active:no" after it was determined that it didn't fix the issue we ran this code "Net user administrator /active:yes" i then rebooted..and was asked for my windows login for my user account "Rees" as usual.. however ALL my settings where gone (including my desktop files) as though it was the first time I booted up. WHAT in the world happened with this command?? I desperately NEED my user accounts and files back to how they were!! (running windows 7) Please help!

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  • 500px.com Ranking Algorithm

    - by alex
    I was recently wondering how http://500px.com calculates their "Pulse" rating. The "Pulse" is a score from 1..100 based on the popularity of the photo. I think it might use some of the following criteria: Number of likes Number of "favorites" Number of comments Total views maybe the time since the photo has been uploaded maybe some other non-obvious criteria like the users follower count, user rank, camera model or similar How would I achieve some sort of algorithm like this? Any advice on how to implement an algorithm with this criteria (and maybe some code) would be appreciated too.

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  • ant undeploy task error

    - by Devil Jin
    I am using ant 1.7 to deploy and undeploy applications in tomcat //Snippet from my build.xml <target name="deploy" depends="war" description="Install application to the servlet containor"> <deploy url="${tomcat.manager.url}" username="${manager.user}" password="${manager.passwd}" path="/${tomcat.ctxpath}" war="${war.local}" /> </target> <target name="undeploy" description="Removes Web Application from path"> <undeploy url="${tomcat.manager.url}" username="${manager.user}" password="${manager.passwd}" path="/${tomcat.ctxpath}" /> </target> The deploy task works perfectly fine but the undeploy task gives an html output for the undeploy task prefixed with [undeploy] although the application is undeployed successfully The html message also contains the success message 'OK - Undeployed application at context path /MyApplication' OUTPUT: [undeploy] <html> [undeploy] <head> [undeploy] <style> [undeploy] H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 {font-family:Tah oma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:whit e;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background :white;color:black;font-size:12px;}A {color : black;}A.name {color : black;}HR {color : #525D76;} table { [undeploy] width: 100%; [undeploy] } [undeploy] td.page-title { [undeploy] text-align: center; [undeploy] vertical-align: top; [undeploy] font-family:sans-serif,Tahoma,Arial; [undeploy] font-weight: bold; [undeploy] background: white; [undeploy] color: black; [undeploy] } [undeploy] td.title { [undeploy] text-align: left; [undeploy] vertical-align: top; [undeploy] font-family:sans-serif,Tahoma,Arial; [undeploy] font-style:italic; [undeploy] font-weight: bold; [undeploy] background: #D2A41C; [undeploy] } [undeploy] td.header-left { [undeploy] text-align: left; [undeploy] vertical-align: top; [undeploy] font-family:sans-serif,Tahoma,Arial; [undeploy] font-weight: bold; [undeploy] background: #FFDC75; [undeploy] } [undeploy] td.header-center { [undeploy] text-align: center; [undeploy] vertical-align: top; [undeploy] font-family:sans-serif,Tahoma,Arial; [undeploy] font-weight: bold; [undeploy] background: #FFDC75; [undeploy] } [undeploy] td.row-left { [undeploy] text-align: left; [undeploy] vertical-align: middle; [undeploy] font-family:sans-serif,Tahoma,Arial; [undeploy] color: black; [undeploy] } [undeploy] td.row-center { [undeploy] text-align: center; [undeploy] vertical-align: middle; [undeploy] font-family:sans-serif,Tahoma,Arial; [undeploy] color: black; [undeploy] } [undeploy] td.row-right { [undeploy] text-align: right; [undeploy] vertical-align: middle; [undeploy] font-family:sans-serif,Tahoma,Arial; [undeploy] color: black; [undeploy] } [undeploy] TH { [undeploy] text-align: center; [undeploy] vertical-align: top; [undeploy] font-family:sans-serif,Tahoma,Arial; [undeploy] font-weight: bold; [undeploy] background: #FFDC75; [undeploy] } [undeploy] TD { [undeploy] text-align: center; [undeploy] vertical-align: middle; [undeploy] font-family:sans-serif,Tahoma,Arial; [undeploy] color: black; [undeploy] } [undeploy] </style> [undeploy] <title>/manager</title> [undeploy] </head> [undeploy] <body bgcolor="#FFFFFF"> [undeploy] <table cellspacing="4" width="100%" border="0"> [undeploy] <tr> [undeploy] <td colspan="2"> [undeploy] <a href="http://www.apache.org/"> [undeploy] <img border="0" alt="The Apache Software Foundation" align="left" [undeploy] src="/manager/images/asf-logo.gif"> [undeploy] </a> [undeploy] <a href="http://tomcat.apache.org/"> [undeploy] <img border="0" alt="The Tomcat Servlet/JSP Container" [undeploy] align="right" src="/manager/images/tomcat.gif"> [undeploy] </a> [undeploy] </td> [undeploy] </tr> [undeploy] </table> [undeploy] <hr size="1" noshade="noshade"> [undeploy] <table cellspacing="4" width="100%" border="0"> [undeploy] <tr> [undeploy] <td class="page-title" bordercolor="#000000" align="left" nowrap> [undeploy] <font size="+2">Tomcat Web Application Manager</font> [undeploy] </td> [undeploy] </tr> [undeploy] </table> [undeploy] <br> [undeploy] <table border="1" cellspacing="0" cellpadding="3"> [undeploy] <tr> [undeploy] <td class="row-left" width="10%"><small><strong>Message:</strong></small>&nbsp;</td> [undeploy] <td class="row-left"><pre>OK - Undeployed application at context path /MyApplication [undeploy] </pre></td> [undeploy] </tr> [undeploy] </table> [undeploy] <br> [undeploy] <table border="1" cellspacing="0" cellpadding="3"> [undeploy] <tr> [undeploy] <td colspan="4" class="title">Manager</td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="row-left"><a href="/manager/html/list">List Applications</a></td> [undeploy] <td class="row-center"><a href="/manager/../docs/html-manager-howto.html">HTML Manager Help</a></td> [undeploy] <td class="row-center"><a href="/manager/../docs/manager-howto.html">Manager Help</a></td> [undeploy] <td class="row-right"><a href="/manager/status">Server Status</a></td> [undeploy] </tr> [undeploy] </table> [undeploy] <br> [undeploy] <table border="1" cellspacing="0" cellpadding="3"> [undeploy] <tr> [undeploy] <td colspan="5" class="title">Applications</td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="header-left"><small>Path</small></td> [undeploy] <td class="header-left"><small>Display Name</small></td> [undeploy] <td class="header-center"><small>Running</small></td> [undeploy] <td class="header-center"><small>Sessions</small></td> [undeploy] <td class="header-left"><small>Commands</small></td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="row-left" bgcolor="#FFFFFF" rowspan="2"><small><a href="/">/</a></small></td> [undeploy] <td class="row-left" bgcolor="#FFFFFF" rowspan="2"><small>Welcome to Tomcat</small></td> [undeploy] <td class="row-center" bgcolor="#FFFFFF" rowspan="2"><small>true</small></td> [undeploy] <td class="row-center" bgcolor="#FFFFFF" rowspan="2"><small><a href="/manager/html/sessions?path=/" target="_bla nk">0</a></small></td> [undeploy] <td class="row-left" bgcolor="#FFFFFF"> [undeploy] <small> [undeploy] &nbsp;Start&nbsp; [undeploy] &nbsp;<a href="/manager/html/stop?path=/" onclick="return(confirm('Are you sure?'))">Stop</a>&nbsp; [undeploy] &nbsp;<a href="/manager/html/reload?path=/" onclick="return(confirm('Are you sure?'))">Reload</a>&nbsp; [undeploy] &nbsp;<a href="/manager/html/undeploy?path=/" onclick="return(confirm('Are you sure?'))">Undeploy</a>&nbsp; [undeploy] </small> [undeploy] </td> [undeploy] </tr><tr> [undeploy] <td class="row-left" bgcolor="#FFFFFF"> [undeploy] <form method="POST" action="/manager/html/expire?path=/"> [undeploy] <small> [undeploy] &nbsp;<input type="submit" value="Expire sessions">&nbsp;with idle &ge;&nbsp;<input type="text" name="idle" siz e="5" value="30">&nbsp;minutes&nbsp; [undeploy] </small> [undeploy] </form> [undeploy] </td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="row-left" bgcolor="#C3F3C3" rowspan="2"><small><a href="/docs">/docs</a></small></td> [undeploy] <td class="row-left" bgcolor="#C3F3C3" rowspan="2"><small>Tomcat Documentation</small></td> [undeploy] <td class="row-center" bgcolor="#C3F3C3" rowspan="2"><small>true</small></td> [undeploy] <td class="row-center" bgcolor="#C3F3C3" rowspan="2"><small><a href="/manager/html/sessions?path=/docs" target=" _blank">0</a></small></td> [undeploy] <td class="row-left" bgcolor="#C3F3C3"> [undeploy] <small> [undeploy] &nbsp;Start&nbsp; [undeploy] &nbsp;<a href="/manager/html/stop?path=/docs" onclick="return(confirm('Are you sure?'))">Stop</a>&nbsp; [undeploy] &nbsp;<a href="/manager/html/reload?path=/docs" onclick="return(confirm('Are you sure?'))">Reload</a>&nbsp; [undeploy] &nbsp;<a href="/manager/html/undeploy?path=/docs" onclick="return(confirm('Are you sure?'))">Undeploy</a>&nbsp; [undeploy] </small> [undeploy] </td> [undeploy] </tr><tr> [undeploy] <td class="row-left" bgcolor="#C3F3C3"> [undeploy] <form method="POST" action="/manager/html/expire?path=/docs"> [undeploy] <small> [undeploy] &nbsp;<input type="submit" value="Expire sessions">&nbsp;with idle &ge;&nbsp;<input type="text" name="idle" siz e="5" value="30">&nbsp;minutes&nbsp; [undeploy] </small> [undeploy] </form> [undeploy] </td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="row-left" bgcolor="#FFFFFF" rowspan="2"><small><a href="/examples">/examples</a></small></td> [undeploy] <td class="row-left" bgcolor="#FFFFFF" rowspan="2"><small>Servlet and JSP Examples</small></td> [undeploy] <td class="row-center" bgcolor="#FFFFFF" rowspan="2"><small>true</small></td> [undeploy] <td class="row-center" bgcolor="#FFFFFF" rowspan="2"><small><a href="/manager/html/sessions?path=/examples" targ et="_blank">0</a></small></td> [undeploy] <td class="row-left" bgcolor="#FFFFFF"> [undeploy] <small> [undeploy] &nbsp;Start&nbsp; [undeploy] &nbsp;<a href="/manager/html/stop?path=/examples" onclick="return(confirm('Are you sure?'))">Stop</a>&nbsp; [undeploy] &nbsp;<a href="/manager/html/reload?path=/examples" onclick="return(confirm('Are you sure?'))">Reload</a>&nbsp; [undeploy] &nbsp;<a href="/manager/html/undeploy?path=/examples" onclick="return(confirm('Are you sure?'))">Undeploy</a>&n bsp; [undeploy] </small> [undeploy] </td> [undeploy] </tr><tr> [undeploy] <td class="row-left" bgcolor="#FFFFFF"> [undeploy] <form method="POST" action="/manager/html/expire?path=/examples"> [undeploy] <small> [undeploy] &nbsp;<input type="submit" value="Expire sessions">&nbsp;with idle &ge;&nbsp;<input type="text" name="idle" siz e="5" value="30">&nbsp;minutes&nbsp; [undeploy] </small> [undeploy] </form> [undeploy] </td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="row-left" bgcolor="#C3F3C3" rowspan="2"><small><a href="/host%2Dmanager">/host-manager</a></small></t d> [undeploy] <td class="row-left" bgcolor="#C3F3C3" rowspan="2"><small>Tomcat Manager Application</small></td> [undeploy] <td class="row-center" bgcolor="#C3F3C3" rowspan="2"><small>true</small></td> [undeploy] <td class="row-center" bgcolor="#C3F3C3" rowspan="2"><small><a href="/manager/html/sessions?path=/host%2Dmanager " target="_blank">0</a></small></td> [undeploy] <td class="row-left" bgcolor="#C3F3C3"> [undeploy] <small> [undeploy] &nbsp;Start&nbsp; [undeploy] &nbsp;<a href="/manager/html/stop?path=/host%2Dmanager" onclick="return(confirm('Are you sure?'))">Stop</a>&nbs p; [undeploy] &nbsp;<a href="/manager/html/reload?path=/host%2Dmanager" onclick="return(confirm('Are you sure?'))">Reload</a> &nbsp; [undeploy] &nbsp;<a href="/manager/html/undeploy?path=/host%2Dmanager" onclick="return(confirm('Are you sure?'))">Undeploy </a>&nbsp; [undeploy] </small> [undeploy] </td> [undeploy] </tr><tr> [undeploy] <td class="row-left" bgcolor="#C3F3C3"> [undeploy] <form method="POST" action="/manager/html/expire?path=/host%2Dmanager"> [undeploy] <small> [undeploy] &nbsp;<input type="submit" value="Expire sessions">&nbsp;with idle &ge;&nbsp;<input type="text" name="idle" siz e="5" value="30">&nbsp;minutes&nbsp; [undeploy] </small> [undeploy] </form> [undeploy] </td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="row-left" bgcolor="#FFFFFF" rowspan="2"><small><a href="/manager">/manager</a></small></td> [undeploy] <td class="row-left" bgcolor="#FFFFFF" rowspan="2"><small>Tomcat Manager Application</small></td> [undeploy] <td class="row-center" bgcolor="#FFFFFF" rowspan="2"><small>true</small></td> [undeploy] <td class="row-center" bgcolor="#FFFFFF" rowspan="2"><small><a href="/manager/html/sessions?path=/manager" targe t="_blank">3</a></small></td> [undeploy] <td class="row-left" bgcolor="#FFFFFF"> [undeploy] <small> [undeploy] &nbsp;Start&nbsp; [undeploy] &nbsp;Stop&nbsp; [undeploy] &nbsp;Reload&nbsp; [undeploy] &nbsp;Undeploy&nbsp; [undeploy] </small> [undeploy] </td> [undeploy] </tr><tr> [undeploy] <td class="row-left" bgcolor="#FFFFFF"> [undeploy] <form method="POST" action="/manager/html/expire?path=/manager"> [undeploy] <small> [undeploy] &nbsp;<input type="submit" value="Expire sessions">&nbsp;with idle &ge;&nbsp;<input type="text" name="idle" siz e="5" value="30">&nbsp;minutes&nbsp; [undeploy] </small> [undeploy] </form> [undeploy] </td> [undeploy] </tr> [undeploy] </table> [undeploy] <br> [undeploy] <table border="1" cellspacing="0" cellpadding="3"> [undeploy] <tr> [undeploy] <td colspan="2" class="title">Deploy</td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td colspan="2" class="header-left"><small>Deploy directory or WAR file located on server</small></td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td colspan="2"> [undeploy] <form method="get" action="/manager/html/deploy"> [undeploy] <table cellspacing="0" cellpadding="3"> [undeploy] <tr> [undeploy] <td class="row-right"> [undeploy] <small>Context Path (required):</small> [undeploy] </td> [undeploy] <td class="row-left"> [undeploy] <input type="text" name="deployPath" size="20"> [undeploy] </td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="row-right"> [undeploy] <small>XML Configuration file URL:</small> [undeploy] </td> [undeploy] <td class="row-left"> [undeploy] <input type="text" name="deployConfig" size="20"> [undeploy] </td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="row-right"> [undeploy] <small>WAR or Directory URL:</small> [undeploy] </td> [undeploy] <td class="row-left"> [undeploy] <input type="text" name="deployWar" size="40"> [undeploy] </td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="row-right"> [undeploy] &nbsp; [undeploy] </td> [undeploy] <td class="row-left"> [undeploy] <input type="submit" value="Deploy"> [undeploy] </td> [undeploy] </tr> [undeploy] </table> [undeploy] </form> [undeploy] </td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td colspan="2" class="header-left"><small>WAR file to deploy</small></td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td colspan="2"> [undeploy] <form action="/manager/html/upload" method="post" enctype="multipart/form-data"> [undeploy] <table cellspacing="0" cellpadding="3"> [undeploy] <tr> [undeploy] <td class="row-right"> [undeploy] <small>Select WAR file to upload</small> [undeploy] </td> [undeploy] <td class="row-left"> [undeploy] <input type="file" name="deployWar" size="40"> [undeploy] </td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="row-right"> [undeploy] &nbsp; [undeploy] </td> [undeploy] <td class="row-left"> [undeploy] <input type="submit" value="Deploy"> [undeploy] </td> [undeploy] </tr> [undeploy] </table> [undeploy] </form> [undeploy] </table> [undeploy] <br> [undeploy] <table border="1" cellspacing="0" cellpadding="3"> [undeploy] <tr> [undeploy] <td colspan="2" class="title">Diagnostics</td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td colspan="2" class="header-left"><small>Check to see if a web application has caused a memory leak on stop, r eload or undeploy</small></td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td colspan="2"> [undeploy] <form method="post" action="/manager/html/findleaks"> [undeploy] <table cellspacing="0" cellpadding="3"> [undeploy] <tr> [undeploy] <td class="row-left"> [undeploy] <input type="submit" value="Find leaks"> [undeploy] </td> [undeploy] <td class="row-left"> [undeploy] <small>This diagnostic check will trigger a full garbage collection. Use it with extreme caution on production systems.</small> [undeploy] </td> [undeploy] </tr> [undeploy] </table> [undeploy] </form> [undeploy] </td> [undeploy] </tr> [undeploy] </table> [undeploy] <br><table border="1" cellspacing="0" cellpadding="3"> [undeploy] <tr> [undeploy] <td colspan="6" class="title">Server Information</td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="header-center"><small>Tomcat Version</small></td> [undeploy] <td class="header-center"><small>JVM Version</small></td> [undeploy] <td class="header-center"><small>JVM Vendor</small></td> [undeploy] <td class="header-center"><small>OS Name</small></td> [undeploy] <td class="header-center"><small>OS Version</small></td> [undeploy] <td class="header-center"><small>OS Architecture</small></td> [undeploy] </tr> [undeploy] <tr> [undeploy] <td class="row-center"><small>Apache Tomcat/6.0.26</small></td> [undeploy] <td class="row-center"><small>1.5.0_09-b01</small></td> [undeploy] <td class="row-center"><small>Sun Microsystems Inc.</small></td> [undeploy] <td class="row-center"><small>Windows XP</small></td> [undeploy] <td class="row-center"><small>5.1</small></td> [undeploy] <td class="row-center"><small>x86</small></td> [undeploy] </tr> [undeploy] </table> [undeploy] <br> [undeploy] <hr size="1" noshade="noshade"> [undeploy] <center><font size="-1" color="#525D76"> [undeploy] <em>Copyright &copy; 1999-2010, Apache Software Foundation</em></font></center> [undeploy] </body> [undeploy] </html>

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  • Out of Core Implementation of a Quadtree

    - by Nima
    Hi, I am trying to build a Quadtree data structure(or let's just say a tree) on the secondary memory(Hard Disk). I have a C++ program to do so and I use fopen to create the files. Also, I am using tesseral coding to store each cell in a file named with its corresponding code to store it on the disk in one directory. The problem is that after creating about 1,100 files, fopen just returns NULL and stops creating new files. I can create further files manually in that directory, but using C++ it can not create any further files. I know about max limit of inode on ext3 filesystem which is (from Wikipedia) 32,000 but mine is way less than that, also note that I can create files manually on the disk; just not through fopen. Also, I really appreciate any idea regarding the best way to store a very dynamic quadtree on disk(I need the nodes to be in separate files and the quadtree might have a depth of 50). Using nested directories is one idea, but I think it will slow down the performance because of following the links on the filesystem to access the file. Thanks, Nima

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  • Using Java to retrieve the CPU Usage for Window's Processes

    - by stjowa
    Hello all, I am looking for a Java solution to finding the CPU usage for a running process in Windows. After looking around the web, there seems to be little information on a solution in Java. Keep in mind, I am not looking to find the CPU usage for the JVM, but any process running in Windows at the time. I am able to retrieve the memory usage in Java by using the exec("tasklist.exe ... ") to retrieve and parse process information. Although there is an aggregate CPU cycle timer for each process, I do not see a CPU usage column. Any help would be greatly appreciated. Also, if possible, I would like to stay away from C libraries; however, if there is no other alternative, a solution by that means would be appropriate. Thanks a lot, Steve

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  • Mac OS on a Windows PC

    - by HDawg
    I've done a little bit of reading on the topic, but nothing too clear has turned up. Why is it so difficult to run Mac OS on a virtual machine on a PC? Some sources say it's because of hardware architecture. Is there a clear, definitive reason?

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  • How does the Control class, provide the ForeColor, BackColor and Font default values?

    - by Miguel Angelo
    I know that component-model indicates whether a property has a default value or not, by means of ShouldSerializeValue method of PropertyDescriptor. The base windows-forms Control class, has some properties like ForeColor, BackColor and Font, that defaults to the same value of the parent, but I could not find any TypeDescriptor or PropertyDescriptor that provides these default values. The Control class does not implement ICustomTypeDescriptor nor has a TypeDescriptionProviderAttribute. How does the Control class indicates that these properties should be serialized or not? Where does it provide the PropertyDescriptors for these properties?? Thanks!!!

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  • Android Location Error

    - by Christopher
    I've singled out my problem to a few lines of code lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE); Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L, 5.0f, this); lat = location.getLatitude(); lng = location.getLongitude(); //lat = new Double(40.431682); //lng = new Double(-74.2021819); pLocation = new GeoPoint((int)(lat * 1000000), (int)(lng * 1000000)); My onLocationChanged if you were wondering public void onLocationChanged(Location location) { if (location != null) { lat = location.getLatitude(); lng = location.getLongitude(); pLocation = new GeoPoint((int)(lat * 1000000), (int)(lng * 1000000)); } } My application crashes if I try to get the LastKnownLocation But it works fine if I feed it a Location manually I have no idea currently whats wrong

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  • Receiving DB update events in .NET from SQLite

    - by Dan Tao
    I've recently discovered the awesomeness of SQLite, specifically the .NET wrapper for SQLite at http://sqlite.phxsoftware.com/. Now, suppose I'm developing software that will be running on multiple machines on the same network. Nothing crazy, probably only 5 or 6 machines. And each of these instances of the software will be accessing an SQLite database stored in a file in a shared directory (is this a bad idea? If so, tell me!). Is there a way for each instance of the app to be notifiied if one instance updates the database file? One obvious way would be to use the FileSystemWatcher class, read the entire database into a DataSet, and then ... you know ... enumerate through the entire thing to see what's new ... but yeah, that seems pretty idiotic, actually. Is there such a thing as a provider of SQLite updates? Does this even make sense as a question? I'm also pretty much a newbie when it comes to ADO.NET, so I might be approaching the problem from the entirely wrong angle.

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  • success, error events aren't working for ajax

    - by Rigo Vides
    Hi everyone, I have the following code: $(document).ready(function(){ $.ajax({ url: "svc/GetTweetsByUser.php", type: "POST", success: function(data) { alert('success'); }, failure: function(){ alert('fail'); }, data: ({twitter_user : 'AdoboHobo'}), dataType: "xml" } );//endof ajax }); I'm kind of starting with web and ajax stuff... this worked perfectly by yesterday. I don't know what is happening now that neither success nor failure events are triggering. I'm shure that the request and response are perfectly working, I checked that with firebug. Does anyone have any ideas for this? Thanks in advance.

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  • Django CMS error when running project

    - by 47
    I'd set up a site a while back using Django-CMS and it was working fine. However, after upgrading to the latest version of both Django and Django-CMS, it doesn't work anymore...when I try to run the development server, I get this message: "Signal recerivers must accept keyword arguments (**kwargs)." AssertionError: Signal receivers must accept keyword arguments (**kwargs). What could be the problem here? I've tried running the sample app that comes with the CMS and it works just fine.

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  • Python enumerate built-in error when using the start parameter

    - by TheJuice
    I'm modifying some code that calls enumerate on a list declared via a list comprehension e.g. self.groups = [Groups(self, idx) for idx in range(n_groups)] then later: for idx, group in enumerate(self.groups): # do some stuff but when I change the enumerate call to start at the 2nd list element via the start parameter e.g. for idx, group in enumerate(self.groups[1]): I get an exception: exceptions.TypeError: 'Group' object is not iterable Could someone explain why this is?

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  • Filtering Wikipedia's XML dump: error on some accents

    - by streetpc
    I'm trying to index Wikpedia dumps. My SAX parser make Article objects for the XML with only the fields I care about, then send it to my ArticleSink, which produces Lucene Documents. I want to filter special/meta pages like those prefixed with Category: or Wikipedia:, so I made an array of those prefixes and test the title of each page against this array in my ArticleSink, using article.getTitle.startsWith(prefix). In English, everything works fine, I get a Lucene index with all the pages except for the matching prefixes. In French, the prefixes with no accent also work (i.e. filter the corresponding pages), some of the accented prefixes don't work at all (like Catégorie:), and some work most of the time but fail on some pages (like Wikipédia:) but I cannot see any difference between the corresponding lines (in less). I can't really inspect all the differences in the file because of its size (5 GB), but it looks like a correct UTF-8 XML. If I take a portion of the file using grep or head, the accents are correct (even on the incriminated pages, the <title>Catégorie:something</title> is correctly displayed by grep). On the other hand, when I rectreate a wiki XML by tail/head-cutting the original file, the same page (here Catégorie:Rock par ville) gets filtered in the small file, not in the original… Any idea ? Alternatives I tried: Getting the file (commented lines were tried wihtout success): FileInputStream fis = new FileInputStream(new File(xmlFileName)); //ReaderInputStream ris = ReaderInputStream.forceEncodingInputStream(fis, "UTF-8" ); //(custom function opening the stream, reading it as UFT-8 into a Reader and returning another byte stream) //InputSource is = new InputSource( fis ); is.setEncoding("UTF-8"); parser.parse(fis, handler); Filtered prefixes: ignoredPrefix = new String[] {"Catégorie:", "Modèle:", "Wikipédia:", "Cat\uFFFDgorie:", "Mod\uFFFDle:", "Wikip\uFFFDdia:", //invalid char "Catégorie:", "Modèle:", "Wikipédia:", // UTF-8 as ISO-8859-1 "Image:", "Portail:", "Fichier:", "Aide:", "Projet:"}; // those last always work

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  • Error with Drools .brl to .drl rule conversion - Adding dynamic rules

    - by jillika iyer
    Hi, I want to add rules dynamically in drools. What is the main plus point of using KNowledge builder?? Or is it better to just list the Files in the rules directory and add it to my program?? But in this case when I convert from a .brl to .drl file at runtime - my new created .drl is not detected. How can I update the new rule and add it at runtime?? Please help. Thank you J

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  • Error while launching soapUi 3.01

    - by Ayrad
    soapui.bat Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/cl i/CommandLineParser Where can I find this library? I already put JAVA HOME to my sdk and I am using windows XP. Any ideas how I can resolve this?

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  • GWT-EXT tree xml Error

    - by ehab refaat
    i am new to GWT GWT-EXT and i mimic it's demo the problem is where i should put xml file final TreePanel treePanel = new TreePanel() { { setAnimate(true); setEnableDD(true); setContainerScroll(true); setRootVisible(true); } }; final XMLTreeLoader loader = new XMLTreeLoader() { { setDataUrl("countries-cb.xml"); setMethod("get"); setRootTag("countries"); setFolderIdMapping("@id"); setLeafIdMapping("@id"); setFolderTitleMapping("@title"); setFolderTag("team"); setLeafTitleMapping("@title"); setLeafTag("country"); setQtipMapping("@qtip"); setDisabledMapping("@disabled"); setCheckedMapping("@checked"); setIconMapping("@icon"); setAttributeMappings(new String[]{"@rank"}); } }; AsyncTreeNode root = new AsyncTreeNode("Countries", loader); treePanel.setRootNode(root); treePanel.render(); root.expand(); treePanel.expandAll();

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  • DataGrid giving error and getting invisible whenever some elements visibility is changed

    - by Tarun
    I have a datagrid in which i have textblocks as one column.Then in the next column i have progress bar over which there is a textblock.On loading row of datagrid,i add these three into lists of textblock and progressbar.I start the first progress bar and after 15-20 minutes next progress bar is started.The next progress bar is getting started fine and after 20 minutes it is getting invisible.The problem is that if i try to make textblock invisible,then the whole Datagrid gets invisible and stops working.After all the tasks in the Datagrid are complete i need to make DataGrid invisible and also when i try to do so,the grid becomes invisible and no other event gets fired.... e.g List txtlist=new List(); i=1; txtlist[i].Visibility=Visibility.Collapsed;

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