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• iPhone App IDs and Provisioning... Does App ID get used instead of provisioning ID if I decide to us

  - by Jann

  This is a question that has been bugging me for a while. I started my app (now submitted -- not yet approved) not wishing to get into the mess that is APNS (Push). I did the following: iPhone Developer Center: Provisioning Portal-Provisioning: Then I created a Development and a Distribution Provisioning Profile. I installed both in XCode. Everything hunky dory. The Development profile scares me a bit by expiring so soon (90 days) but I can remove it from the iPhone(s) and sign it with a new one later. I tested using the Development profile, and later to submitted it by signing it with the Distribution profile. I then uploaded the Distribution profile-signed app to iTunesConnect (app store). Okay, I understand that much. Now, what I don't understand is this: Now that I understand the theories and methods behind how Push works, I am wishing to add it to my app. I already went under: iPhone Developer Center: Provisioning Portal-App IDs: and created a Development Provisioning Profile and Distribution Provisioning Profile there (push & in-app purchase enabled). Here is where it gets confusing to me. All the books and docs I have read say that I have to sign the app with this "App ID" provisioning profile (push-enabled) from now on. Does that mean I no longer ever use the previously created provisioning profiles? If I were to import these "App ID" provisioning profiles into Xcode they will exist alongside my previously generated "non-push" profiles. ~/Library/Mobile Devices/Provisioning Profiles now has 2 files. One Devel and one Distrib. It will now have 4 even though for this app I will not use the "non-push" anymore right? (actually, since they are locked by using bundle-codes and app ids i will never use it again if all of my further versions of this app use Push?) Confused. Can anyone enlighten me? Why not use the "App ID" profiles in the first place for everyone -- even if you are not gonna use push? Would keep it simpler. Should I only generate "Push Enabled" profiles from now on -- even if i am not sure I am gonna use push (or for that matter in-app purchase)? Please give me some insight. I do not wanna do this wrong. Thanks! Jann

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• Qt static build with static mysql plugin confusion

  - by bdiloreto

  I have built a Qt application which uses the MySQL library, but I am confused by the documentation on static versus shared builds. From the Qt documentation at http://doc.qt.nokia.com/4.7/deployment-windows.html it says: To deploy plugin-based applications we should use the shared library approach. And on http://doc.qt.nokia.com/4.7/deployment.html, it says: Static linking results in a stand-alone executable. The advantage is that you will only have a few files to deploy. The disadvantages are that the executables are large and with no flexibility and that you cannot deploy plugins. To deploy plugin-based applications, you can use the shared library approach. But on http://doc.qt.nokia.com/latest/plugins-howto.html, it seems to say the opposite, giving directions on how to use static plugins: Plugins can be linked statically against your application. If you build the static version of Qt, this is the only option for including Qt's predefined plugins. Using static plugins makes the deployment less error-prone, but has the disadvantage that no functionality from plugins can be added without a complete rebuild and redistribution of the application. ... To link statically against those plugins, you need to use the Q_IMPORT_PLUGIN() macro in your application and you need to add the required plugins to your build using QTPLUGIN. I want to build the Qt libraries statically (for easy deployment) and then use the static MySQL plugin. To do this, I did NOT use the binary distrubtion for Windows. Instead, I've started with the source qt-everywhere-opensource-src-4.7.4 Is the following the correct way to do a static build so that i can use the static MySql plugin? configure -static -debug-and-release -opensource -platform win32-msvc2010 -no-qt3support -no-webkit -no-script -plugin-sql-mysql -I C:\MySQL\include -L C:\MySQL\lib This should build the Qt libraries statically AND the static plugin to be linked at run-time, correct? I would NOT need to build the Mysql Plugin from source separately, correct? If I was to subtitute "-qt-sql-mysql" for "-plugin-sql-mysql" in above, it would include the MySQL driver directly in the QT static libraries, in which case I would NOT need to use the plugin at all, correct? Thanks for making me unconfused!

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• ADO.NET (WCF) Data Services Query Interceptor Hangs IIS

  - by PreMagination

  I have an ADO.NET Data Service that's supposed to provide read-only access to a somewhat complex database. Logically I have table-per-type (TPT) inheritance in my data model but the EDM doesn't implement inheritance. (Limitation of EF and navigation properties on derived types. STILL not fixed in EF4!) I can query my EDM directly (using a separate project) using a copy of the query I'm trying to run against the web service, results are returned within 10 seconds. Disabling the query interceptors I'm able to make the same query against the web service, results are returned similarly quickly. I can enable some of the query interceptors and the results are returned slowly, up to a minute or so later. Alternatively, I can enable all the query interceptors, expand less of the properties on the main object I'm querying, and results are returned in a similar period of time. (I've increased some of the timeout periods) Up til this point Sql Profiler indicates the slow-down is the database. (That's a post for a different day) But when I enable all my query interceptors and expand all the properties I'd like to have the IIS worker process pegs the CPU for 20 minutes and a query is never even made against the database. This implies to me that yes, my implementation probably sucks but regardless the Data Services "tier" is having an issue it shouldn't. WCF tracing didn't reveal anything interesting to my untrained eye. Details: Data model: Agent-Person-Student Student has a collection of referrals Students and referrals are private, queries against the web service should only return "your" students and referrals. This means Person and Agent need to be filtered too. Other entities (Agent-Organization-School) can be accessed by anyone who has authenticated. The existing security model is poorly suited to perform this type of filtering for this type of data access, the query interceptors are complicated and cause EF to generate some entertaining sql queries. Sample Interceptor [QueryInterceptor("Agents")] public Expression<Func<Agent, Boolean>> OnQueryAgents() { //Agent is a Person(1), Educator(2), Student(3), or Other Person(13); allow if scope permissions exist return ag => (ag.AgentType.AgentTypeId == 1 || ag.AgentType.AgentTypeId == 2 || ag.AgentType.AgentTypeId == 3 || ag.AgentType.AgentTypeId == 13) && ag.Person.OrganizationPersons.Count<OrganizationPerson>(op => op.Organization.ScopePermissions.Any<ScopePermission> (p => p.ApplicationRoleAccount.Account.UserName == HttpContext.Current.User.Identity.Name && p.ApplicationRoleAccount.Application.ApplicationId == 124) || op.Organization.HierarchyDescendents.Any<OrganizationsHierarchy>(oh => oh.AncestorOrganization.ScopePermissions.Any<ScopePermission> (p => p.ApplicationRoleAccount.Account.UserName == HttpContext.Current.User.Identity.Name && p.ApplicationRoleAccount.Application.ApplicationId == 124))) > 0; } The query interceptors for Person, Student, Referral are all very similar, ie they traverse multiple same/similar tables to look for ScopePermissions as above. Sample Query var referrals = (from r in service.Referrals .Expand("Organization/ParentOrganization") .Expand("Educator/Person/Agent") .Expand("Student/Person/Agent") .Expand("Student") .Expand("Grade") .Expand("ProblemBehavior") .Expand("Location") .Expand("Motivation") .Expand("AdminDecision") .Expand("OthersInvolved") where r.DateCreated >= coupledays && r.DateDeleted == null select r); Any suggestions or tips would be greatly associated, for fixing my current implementation or in developing a new one, with the caveat that the database can't be changed and that ultimately I need to expose a large portion of the database via a web service that limits data access to the data authorized for, for the purpose of data integration with multiple outside parties. THANK YOU!!!

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• Apache Commons FileUpload Does not behave like expected

  - by Harry Pham

  I just want to assure you guys that before I post this, I have read couple of similar post but none solved my problem. So here it is. I use Ajax taglib for my form since it wont refresh my screen <%@ taglib uri="WEB-INF/taglib.tld" prefix="a" %> <a:AjaxUpload action="UploadServlet"> <input type="file"> <input type="submit" value="Upload"> </a:AjaxUpload> If this is in any confused you guys, then you can think of the above code will create these form, but send request asynchronously. <form action="UploadServlet" enctype="multipart/form-data" method="post"> <input type="file"> <input type="submit"> </form> My first question is, if I add name="file" inside the <input> to make it become like this, <input type="file" name="file">, my servlet will throw an exception. It wont if I take it out. Here is the exception: SEVERE: Servlet.service() for servlet UploadServlet threw exception javax.servlet.ServletException: Servlet execution threw an exception at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:313) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:637) My second question is: On the server side, I check the request to see if it is isMultipartContent, and it is. But then when I parseRequest() and store into List<FileItem> items, the items.size() is 0. Here is my Servlet code FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); List<FileItem> items = null; if(request.getContentType() != null && request.getContentType().toLowerCase().indexOf("multipart/form-data") > -1){ if(upload.isMultipartContent(request)){ items = upload.parseRequest(request); //It got to here, but items.size is 0. why????????????? } }

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• Log4r : logger inheritance, yaml configuration, alternatives ?

  - by devlearn

  Hello, I'm pretty new to ruby environments and I was looking for a nice logging framework to use it my ruby and rails applications. In my previous experiences I have successfully used log4j and log4p (the perl port) and was expecting the same level of usability (and maturity) with log4r. However I must say that there are a number of things that are not clear at all in the log4r framework. 1 Logger Inheritance The logger inheritance does not seem to be managed at all ! If I declare a logger named 'myapp' and then try to get a logger name 'myapp::engine', the lookup will end with a NameError. I would expect that the framework returns the root logger according to the naming scheme and to use the 'myapp' logger. Q1 : Of course I can work around this and manage the names by myself with a lookup method, however is there a cleaner way to do this without any extra coding ? 2 YAML configuration Second thing that confuses me is the yaml configuration. On the log4r site there are literally no information about this system, the doc links forward to missing pages, so all the info I can find about is contained in the examples directory of the gem. I was pretty confused with the fact that the yaml configuration must contain the pre_config section, and that I need to define my own levels. If I remove the pre_config secion, or replace all the “custom” levels by the standard ones ( debug, info, warn, fatal ) , the example will throw the following error : log4r/yamlconfigurator.rb:68:in `decode_yaml': Log level must be in 0..7 (ArgumentError) So there seems to be no way of using a simple file where we only declare the loggers and appenders for the framework. Q2 : I realy think that I missed something and that must be a way of providing a simple yaml conf file. Do you have any examples of such an usage ? 3 Variables substitution in XML file Q3 : The Yaml configuration system seems to provide such a feature however I was unable to find a similar feature with XML files. Any ideas ? 4 Alternatives ? I must say that I'm very disappointed by the feature level and the maturity of log4r compared to the log4j and other log4j ports. I run into this framework with a solid background of logging APIs in other languages and find myself working around in all kinds just to make 'basic things' running in a “real world application”. By that I mean a complex application composed of several gems, console/scripting apps, and a rails web front end where the configuration must be mutualized and where we make intensive usage of namespaces and inheritance. I've run several searches in order to find something more suitable or mature, but did not find anything similar. Q4 : Do you guys know any (serious) alternatives to log4r framework that could be used in a enterprise class app ? Thanks reading all of this ! I'd really appreciate any pointers, Kind Regards,

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• Synchronization requirements for FileStream.(Begin/End)(Read/Write)

  - by Doug McClean

  Is the following pattern of multi-threaded calls acceptable to a .Net FileStream? Several threads calling a method like this: ulong offset = whatever; // different for each thread byte[] buffer = new byte[8192]; object state = someState; // unique for each call, hence also for each thread lock(theFile) { theFile.Seek(whatever, SeekOrigin.Begin); IAsyncResult result = theFile.BeginRead(buffer, 0, 8192, AcceptResults, state); } if(result.CompletedSynchronously) { // is it required for us to call AcceptResults ourselves in this case? // or did BeginRead already call it for us, on this thread or another? } Where AcceptResults is: void AcceptResults(IAsyncResult result) { lock(theFile) { int bytesRead = theFile.EndRead(result); // if we guarantee that the offset of the original call was at least 8192 bytes from // the end of the file, and thus all 8192 bytes exist, can the FileStream read still // actually read fewer bytes than that? // either: if(bytesRead != 8192) { Panic("Page read borked"); } // or: // issue a new call to begin read, moving the offsets into the FileStream and // the buffer, and decreasing the requested size of the read to whatever remains of the buffer } } I'm confused because the documentation seems unclear to me. For example, the FileStream class says: Any public static members of this type are thread safe. Any instance members are not guaranteed to be thread safe. But the documentation for BeginRead seems to contemplate having multiple read requests in flight: Multiple simultaneous asynchronous requests render the request completion order uncertain. Are multiple reads permitted to be in flight or not? Writes? Is this the appropriate way to secure the location of the Position of the stream between the call to Seek and the call to BeginRead? Or does that lock need to be held all the way to EndRead, hence only one read or write in flight at a time? I understand that the callback will occur on a different thread, and my handling of state, buffer handle that in a way that would permit multiple in flight reads. Further, does anyone know where in the documentation to find the answers to these questions? Or an article written by someone in the know? I've been searching and can't find anything. Relevant documentation: FileStream class Seek method BeginRead method EndRead IAsyncResult interface

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• tinymce not working with chrome when i dynamically setcontent

  - by oo

  I have a site that i put: <body onload="ajaxLoad()" > I have a javascript function that then shove data from my db into the text editor by using the setContent method in javascript of the textarea. seems fine in firefox and IE but in chrome sometimes nothing shows up. no error, just blank editor in the body section: <textarea id="elm1" name="elm1" rows="40" cols="60" style="width: 100%"> </textarea> in the head section: function ajaxLoad() { var ed = tinyMCE.get('elm1'); ed.setProgressState(1); // Show progress window.setTimeout(function() { ed.setProgressState(0); // Hide progress ed.setContent('<p style="text-align: center;"><strong><br /><span style="font-size: small;">General Manager&#39;s Corner</span></strong></p><p style="text-align: center;">August&nbsp;2009</p><p>It&rsquo;s been 15^th and so have a Steak Night (Saturday, 15^th) and a shore Dinner planned (Saturday, 22^nd) this month. urday, September 5^th. e a can&rsquo;t missed evening, shas extended it one additional week. The last clinic will be the week of August 11^th. </p><p>&nbsp;Alt (Tuesday through Thursday) </p><p>&nbsp;I wouClub.</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;<strong></strong></p>'); }, 1); } i am not sure if its some of the formatting that chrome is reject but it seems like if tinymce can parse it in one browser it can do it in any browser so i am confused. any suggestions?

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• Android Marketplace Error: "The server could not process your apk. Try again."

  - by jdandrea

  I have an updated apk - tested successfully on various devices and simulator instances - with the following manifest: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.myCompany.appName" android:versionCode="2" android:versionName="1.0.1"> <uses-sdk android:minSdkVersion="3" android:targetSdkVersion="5" /> <uses-permission android:name="android.permission.INTERNET" /> <supports-screens android:largeScreens="true" android:normalScreens="true" android:smallScreens="true" /> <application android:icon="@drawable/icon" android:label="@string/icon_name" android:debuggable="false"> <activity android:name=".myActivity" android:configChanges="keyboardHidden|orientation"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest> When I post to Android Marketplace as an upgrade to my existing 1.0 app, I get the aforementioned ambiguous message: "The server could not process your apk. Try again." I've searched elsewhere for this message in hopes of finding out what might be happening, to no avail. (A popular suggestion is to move the uses-sdk element to the top of the manifest, but as you can see it's already at the top.) Clues welcome/appreciated. Update: I just tried to upload the same file again. Now I get a new message: The new apk's versionCode (2) in AndroidManifest.xml must be higher than the old apk's versionCode (2). The server could not process your apk. Try again. Soooo Marketplace did get my upgraded apk after all? (The very first accepted apk's versionCode was 1, so this update was of course bumped to 2.) Confused … Bumping it up to 3 and trying again. Surprise surprise, I get the original "could not process" error all over again. Going in circles. Hmm ... :( Nuther Update: If I exit and re-enter the Marketplace page, now it shows that the app has been uploaded! Except there's no app icon. Curiouser and curiouser ... and this is all happening with a cache-cleared (standards-friendly) browser to boot. So - do I trust the upload? Or start over ... with versionCode="4"? All I want is to get a solid "Upload successful, here's the icon, ready to publish" type of response.

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• Android stream to Wowza

  - by Curtis Kiu

  I feel very confused about Android streaming to wowza. I am doing a video conference using rtmp cross-platform, but Android doesn't eat RTMP. Therefore I need to find another way to do it. Upstreaming I found a new open-source app called spydroid-ipcamera. It is using rtp, sending udp packets to computer, and opens it in vlc using the following sdp v=0 s=Unnamed m=video 5006 RTP/AVP 96 a=rtpmap:96 H264/90000 a=fmtp:96 packetization-mode=1;profile-level-id=420016;sprop-parameter-sets=Z0IAFukBQHsg,aM4BDyA=; But it can't work. Then I follow wowza tutorial and stream to it and then play again in VLC. That works! I wrote it in http://code.google.com/p/spydroid-ipcamera/issues/detail?id=2 However when I want to add audio in the packet, it fails to work. I change to code in http://code.google.com/p/spydroid-ipcamera/source/browse/trunk/src/net/mkp/spydroid/CameraStreamer.java mr.setAudioSource(MediaRecorder.AudioSource.MIC); mr.setVideoSource(MediaRecorder.VideoSource.CAMERA); mr.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); mr.setVideoFrameRate(20); mr.setVideoSize(640, 480); mr.setAudioEncoder(MediaRecorder.AudioEncoder.AAC); mr.setVideoEncoder(MediaRecorder.VideoEncoder.H264); mr.setPreviewDisplay(holder.getSurface()); Then I thought that the problem should be in sdp, but I don't know how to due with sdp. I am streaming H.264/AAC with Mp4 Second I don't understand sdp. So how can I make video conference upstreaming part using this apps. Android ----(UDP Port:5006)----> PC (SDP file) and then Wowza read the SDP file ------> VLC I think in this way the system cannot handle more than 1 client. sdp can only hold 1 port, any idea or actually it wont' work? Also Wowza need to set the stream before we stream it, so does it mean that I should not follow this way to do it? Sorry my English is poor, I hope you guys understand.

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• angular-ui maps javascript error

  - by Will Lopez

  I'm having an issue with angularui. This error came from angular-google-maps.js: Error: [$compile:ctreq] Controller 'googleMap', required by directive 'rectangle', can't be found! http://errors.angularjs.org/1.2.16/$compile/ctreq?p0=googleMap&p1=rectangle at http://localhost:62874/Scripts/angular.js:78:12 at getControllers (http://localhost:62874/Scripts/angular.js:6409:19) at nodeLinkFn (http://localhost:62874/Scripts/angular.js:6580:35) at compositeLinkFn (http://localhost:62874/Scripts/angular.js:5986:15) at compositeLinkFn (http://localhost:62874/Scripts/angular.js:5989:13) at compositeLinkFn (http://localhost:62874/Scripts/angular.js:5989:13) at nodeLinkFn (http://localhost:62874/Scripts/angular.js:6573:24) at compositeLinkFn (http://localhost:62874/Scripts/angular.js:5986:15) at Scope.publicLinkFn [as $transcludeFn] (http://localhost:62874/Scripts/angular.js:5891:30) at link (http://localhost:62874/Scripts/ui-bootstrap-tpls-0.12.0.min.js:9:8037) <div class="rectangle grid-style ng-scope ng-isolate-scope" data-ng-grid="pipelineGrid"> I'm a little confused because the controller isn't trying to inject the angular-ui map directive: appRoot.controller('PipelineController', ["$scope", "$location", "$resource", function ($scope, $location, $resource) { ... Here's the html: <div class="container"> <tabset> <tab heading="Upload File"> <p>Tab 1 content</p> </tab> <tab heading="Data Maintenance"> Tab 2 content <div ng-controller="PipelineController"> <div id="mapFilter" class="panel panel-default"> <div class="panel-heading text-right"> <div class="input-group"> <input type="text" class="form-control" ng- model="pipelineGrid.filterOptions.filterText" placeholder="enter filter" /> <span class="input-group-addon"><span class="glyphicon glyphicon- filter"></span></span> </div> </div> <div class="panel-body"> <div class="rectangle grid-style" data-ng-grid="pipelineGrid"> </div> </div> </div> </div> </tab> </tabset> </div> Thank you!

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• How to override PHP configuration when running in CGI mode

  - by Fitrah M

  There are some tutorials out there telling me how to override PHP configuration when it is running in CGI mode. But I'm still confused because lots of them assume that the server is running on Linux. While I need to do that also in Windows. My hosting is indeed using Linux but my local development computer is using Windows XP with Xampp 1.7.3. So I need to do that in my local computer first, then I want to change the configuration on hosting server. The PHP in my hosting server is already run as CGI while in my local computer still run as Apache module. At this point, the processes that I understand are: Change PHP to work in CGI mode. I did this by commenting these two line in "httpd-xampp.conf": # LoadFile "C:/xampp/php/php5ts.dll" # LoadModule php5_module modules/php5apache2_2.dll Create "cgi-bin" directory in DocumentRoot. My DocumentRoot is in "D:\www\" (I'm using apache with virtual host). So it is now "D:\www\cgi-bin". Change the default "cgi-bin" directory settings from "C:/xampp/cgi-bin/" to "D:\www\cgi-bin": ScriptAlias /cgi-bin/ "D:/www/cgi-bin/" <Directory "D:\www\cgi-bin"> Options MultiViews Indexes SymLinksIfOwnerMatch Includes ExecCGI AllowOverride All Allow from All </Directory> At this point, my PHP is now running as CGI. I checked this with phpinfo(). It tells me that Server API is now CGI/FastCGI. Now I want to override php configuration. I copied 'php.ini' file to "D:\www\cgi-bin" and modify upload_max_filesize setting from 128M to 10M. Create 'php.cgi' file in "D:\www\cgi-bin" and put these code inside the file: #!/bin/sh /usr/local/cpanel/cgi-sys/php5 -c /home/user/public_html/cgi-bin/ That's it. I'm stuck at this point. All of tutorials tell me to create 'php.cgi' file and put shell code inside the file. How to do the 6th step on Windows? I know the next step is to create handler in .htaccess file to load that 'php.cgi'. And also, because I will also need to change PHP configuration on my hosting server (Linux), is the 6th step above right? Some tutorial tells to insert these line instead of above: #!/bin/sh export PHPRC=/site/ini/1 exec /cgi-bin/php5.cgi I'm sorry if my question is not clear. I'm a new member and this is my first question in this site. Thank you.

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• OnExit is not entering via PostSharp in asp.net project.

  - by mark smith

  Hi there, I have setup PostSharp and it appears to be working but i don't get it entering OnExit (i have logged setup to ensure it is working) ... Its a bit tricky to configure with asp.net - or is it just me ... I am using the 1.5 new version I basically have the following in my web.config and i had to add the SearchPath otherwise it can't find my assemblies <postsharp directory="C:\Program Files\PostSharp 1.5" trace="true"> <parameters> <!--<add name="parameter-name" value="parameter-value"/>--> </parameters> <searchPath> <!-- Always add the binary folder to the search path. --> <add name="bin" value="~\bin"/> </searchPath> </postsharp> I have set tracing on but what is strange to me is that it appears to build to the temp directory, maybe this is my issue, i am unsure .. hence i do F5 ... Is it possible to name the Output directory and output file?? As you can see it is editing a DLL in the temp dir so IIS is no longer in control so it doesn't execute it ??? Confused! :-) C:\Program Files\PostSharp 1.5\postsharp.exe "/P:Output=C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\mysitemvc-1.2\c2087140\8ac2dc93\postsharp\App_Web_04ae3ewy.dll" "/P:IntermediateDirectory=C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\mysitemvc-1.2\c2087140\8ac2dc93\postsharp " /P:CleanIntermediate=False /P:ReferenceDirectory=. /P:SignAssembly=False /P:PrivateKeyLocation= /P:ResolvedReferences= "/P:SearchPath=C:\Source Code\Visual Studio 2008\Projects\mysitemvc\mysitemvc\bin," /V /SkipAutoUpdate "C:\Program Files\PostSharp 1.5\Default.psproj" "C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\mysitemvc-1.2\c2087140\8ac2dc93\before-postsharp\App_Web_04ae3ewy.dll" PostSharp 1.5 [1.5.6.627] - Copyright (c) Gael Fraiteur, 2005-2009. info PS0035: C:\Windows\Microsoft.NET\Framework\v2.0.50727\ilasm.exe "C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\mysitemvc-1.2\c2087140\8ac2dc93\postsharp\App_Web_04ae3ewy.il" /QUIET /DLL /PDB "/RESOURCE=C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\mysitemvc-1.2\c2087140\8ac2dc93\postsharp\App_Web_04ae3ewy.res" "/OUTPUT=C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\mysitemvc-1.2\c2087140\8ac2dc93\postsharp\App_Web_04ae3ewy.dll" /SUBSYSTEM=3 /FLAGS=1 /BASE=18481152 /STACK=1048576 /ALIGNMENT=512 /MDV=v2.0.50727

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• Tridion Installation

  - by Kevin Brydon

  I am currently upgrading an installation of Tridion from 5.3 to 2011 starting almost from scratch (aside from migrating the database), brand new virtual servers. I just want to ask for some advice on my current server setup... a sanity check. All servers are running Windows Server 2008. The pages on our website are all classic ASP. Database SQL Server cluster. The 5.3 database has been migrated using the DatabaseManager. This is pretty standard and works well (in test anyway). Content Manager A single server to run the Content Manager and the Publisher. There are around 10 people using it at any one time so not under a particularly heavy load. Content Data Store Filesystem located somewhere on the network. One directory for live and one for staging. Content Delivery Two servers (cd1 and cd2) each with the the following server roles installed. cd1 writes to a filesystem content data store for the live website, cd2 writes to the content data store for the staging website. Presentation Two public facing web servers (web1 and web2) serving both the live and staging websites. The web servers read directly from the content data store as its a filesystem. Each of the web servers have the Content Delivery Server installed so that I can use dynamic linking (and other features?). I've so far set up everything but the web servers. Any thoughts? edit Thanks to Ram S who linked me to a decent walkthrough, upvoted. I suppose I should have posed some questions as I didn't really ask a question. I guess I'm a little confused over the content deliver aspect. I have the Content Delivery split in two separate parts. cd1 and cd2 do the work of shifting information from the Content Manager to the Staging/Live web directories. web1 and web2 should do the work of serving the web pages to the outside world and will interact with the content data store (file system). Is this a correct setup? I need some parts of the Content Delivery on my web servers right? Theoretically I could get rid of the cd1 and cd2 servers and use web1 and web2 to do the deployment right? But I suspect this will put the web servers under unnecessary strain should there ever be a big publish. I've been reading the 2011 Installation Manual, Content Delivery section, and I'm finding it quite hard to get my head around!

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• Safe, standard way to load images in ListView on a different thread?

  - by Po

  Before making this question, I have searched and read these ones: http://stackoverflow.com/questions/541966/android-how-do-i-do-a-lazy-load-of-images-in-listview http://stackoverflow.com/questions/1409623/android-issue-with-lazy-loading-images-into-a-listview My problem is I have a ListView, where: Each row contains an ImageView, whose content is to be loaded from the internet Each row's view is recycled as in ApiDemo's List14 What I want ultimately: Load images lazily, only when the user scrolls to them Load images on different thread(s) to maintain responsiveness My current approach: In the adapter's getView() method, apart from setting up other child views, I launch a new thread that loads the Bitmap from the internet. When that loading thread finishes, it returns the Bitmap to be set on the ImageView (I do this using AsyncTask or Handler). Because I recycle ImageViews, it may be the case that I first want to set a view with Bitmap#1, then later want to set it to Bitmap#2 when the user scrolls down. Bitmap#1 may happen to take longer than Bitmap#2 to load, so it may end up overwriting Bitmap#2 on the view. I solve this by maintaining a WeakHashMap that remembers the last Bitmap I want to set for that view. Below is somewhat a pseudocode for my current approach. I've ommitted other details like caching, just to keep the thing clear. public class ImageLoader { // keeps track of the last Bitmap we want to set for this ImageView private static final WeakHashMap<ImageView, AsyncTask> assignments = new WeakHashMap<ImageView, AsyncTask>(); /** Asynchronously sets an ImageView to some Bitmap loaded from the internet */ public static void setImageAsync(final ImageView imageView, final String imageUrl) { // cancel whatever previous task AsyncTask oldTask = assignments.get(imageView); if (oldTask != null) { oldTask.cancel(true); } // prepare to launch a new task to load this new image AsyncTask<String, Integer, Bitmap> newTask = new AsyncTask<String, Integer, Bitmap>() { protected void onPreExecute() { // set ImageView to some "loading..." image } protected Bitmap doInBackground(String... urls) { return loadFromInternet(imageUrl); } protected void onPostExecute(Bitmap bitmap) { // set Bitmap if successfully loaded, or an "error" image if (bitmap != null) { imageView.setImageBitmap(bitmap); } else { imageView.setImageResource(R.drawable.error); } } }; newTask.execute(); // mark this as the latest Bitmap we want to set for this ImageView assignments.put(imageView, newTask); } /** returns (Bitmap on success | null on error) */ private Bitmap loadFromInternet(String imageUrl) {} } Problem I still have: what if the Activity gets destroyed while some images are still loading? Is there any risk when the loading thread calls back to the ImageView later, when the Activity is already destroyed? Moreover, AsyncTask has some global thread-pool underneath, so if lengthy tasks are not canceled when they're not needed anymore, I may end up wasting time loading things users don't see. My current design of keeping this thing globally is too ugly, and may eventually cause some leaks that are beyond my understanding. Instead of making ImageLoader a singleton like this, I'm thinking of actually creating separate ImageLoader objects for different Activities, then when an Activity gets destroyed, all its AsyncTask will be canceled. Is this too awkward? Anyway, I wonder if there is a safe and standard way of doing this in Android. In addition, I don't know iPhone but is there a similar problem there and do they have a standard way to do this kind of task? Many thanks.

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• Rails AtomFeedBuilder Entry :Url option appears in url tag but not in link tag

  - by Nick

  Hello, I'm using the AtomFeedHelper and everything is working fine except for one feed where I need to link each entry to a URL which is not the default polymorphic_url for the record. Per the documentation I've specified an :url option for the entry. This correctly renders a <url> tag in the atom node but the <link rel="alternate" still points to the default polymorphic_url. Looking at the source and the documentation I don't understand why this is happening. Here's an example builder: atom_feed do |feed| feed.title("Reports") feed.updated(@reports.first.created_at) for report in @reports content = report.notes feed.entry(report) do |entry| entry.title(report.title) entry.content(content, :type => 'html') entry.url("http://myhost/page/") entry.updated(report.updated_at.strftime("%Y-%m-%dT%H:%M:%SZ")) entry.author do |author| author.name(report.user.username) end end end end Here's an example of a problem node: <entry> <id>tag:molly.recargo.com,2005:SiteReport/2</id> <published>2010-03-30T13:11:07-07:00</published> <updated>2010-03-30T13:11:07-07:00</updated> <link rel="alternate" type="text/html" href="http://myhost/site_reports/2"/> <title>Test Title</title> <content type="html">Test Content</content> <url>http://myhost/page/</url> <updated>2010-03-30T13:11:07Z</updated> <author> <name>Author</name> </author> </entry> I wan the href value in the link tag to match the value in the url tag but it does not. When I look at the source listed for entry here http://api.rubyonrails.org/classes/ActionView/Helpers/AtomFeedHelper/AtomFeedBuilder.html I'd assume that this line would work correctly: @xml.link(:rel => 'alternate', :type => 'text/html', :href => options[:url] || @view.polymorphic_url(record)) Confused. Has anyone encountered this before? Thanks all!

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• Filter chain halted as [:login_required] rendered_or_redirected

  - by Magicked

  Hopefully I can explain this well enough, but please let me know if more information is needed! I'm building a form where a user can create an "incident". This incident has the following relationships: belongs_to: customer (customer has_many incidents) belongs_to: user (user has_many incidents) has_one: incident_status (incident_status belongs to incident) The form allows the user to assign the incident to a user (select form) and then select an incident status. The incident is nested in customer. However, I'm getting the following in the server logs: Processing IncidentsController#create (for 127.0.0.1 at 2010-04-26 10:41:33) [POST] Parameters: {"commit"=>"Create", "action"=>"create", "authenticity_token"=>"YhW++vd/dnLoNV/DSl1DULcaWq/RwP7jvLOVx9jQblA=", "customer_id"=>"4", "controller"=>"incidents", "incident"=>{"title"=>"Some Bad Incident", "incident_status_id"=>"1", "user_id"=>"2", "other_name"=>"SS01-042310-001"}} User Load (0.3ms) SELECT * FROM "users" WHERE ("users"."id" = 2) LIMIT 1 Redirected to http://localhost:3000/session/new Filter chain halted as [:login_required] rendered_or_redirected. Completed in 55ms (DB: 0) | 302 Found [http://localhost/customers/4/incidents] It looks to me like it's trying to gather information about the user, even though it already has the id (which is all it needs to create the incident), and the user may not have permission to do a select statement like that? I'm rather confused. Here is the relevant (I think) information in the Incident controller. before_filter :login_required, :get_customer def new @incident = @customer.incidents.build @users = @customer.users @statuses = IncidentStatus.find(:all) respond_to do |format| format.html # new.html.erb format.xml { render :xml => @incident } end end def create @incident = @customer.incidents.build(params[:incident]) respond_to do |format| if @incident.save flash[:notice] = 'Incident was successfully created.' format.html { redirect_to(@incident) } format.xml { render :xml => @incident, :status => :created, :location => @incident } else format.html { render :action => "new" } format.xml { render :xml => @incident.errors, :status => :unprocessable_entity } end end end Just as an FYI, I am using the restful_authentication plugin. So in summary, when I submit the incident creation form, it does not save the incident because it halts. I'm still very new to rails, so my skill at diagnosing problems like this is still very bad. I'm going in circles. :) Thanks in advance for any help. Please let me know if more information is needed and I'll edit it in!

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• Asynchronous sockets in C#

  - by IVlad

  I'm confused about the correct way of using asynchronous socket methods in C#. I will refer to these two articles to explain things and ask my questions: MSDN article on asynchronous client sockets and devarticles.com article on socket programming. My question is about the BeginReceive() method. The MSDN article uses these two functions to handle receiving data: private static void Receive(Socket client) { try { // Create the state object. StateObject state = new StateObject(); state.workSocket = client; // Begin receiving the data from the remote device. client.BeginReceive( state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state); } catch (Exception e) { Console.WriteLine(e.ToString()); } } private static void ReceiveCallback( IAsyncResult ar ) { try { // Retrieve the state object and the client socket // from the asynchronous state object. StateObject state = (StateObject) ar.AsyncState; Socket client = state.workSocket; // Read data from the remote device. int bytesRead = client.EndReceive(ar); if (bytesRead > 0) { // There might be more data, so store the data received so far. state.sb.Append(Encoding.ASCII.GetString(state.buffer,0,bytesRead)); // Get the rest of the data. client.BeginReceive(state.buffer,0,StateObject.BufferSize,0, new AsyncCallback(ReceiveCallback), state); } else { // All the data has arrived; put it in response. if (state.sb.Length > 1) { response = state.sb.ToString(); } // Signal that all bytes have been received. receiveDone.Set(); } } catch (Exception e) { Console.WriteLine(e.ToString()); } } While the devarticles.com tutorial passes null for the last parameter of the BeginReceive method, and goes on to explain that the last parameter is useful when we're dealing with multiple sockets. Now my questions are: What is the point of passing a state to the BeginReceive method if we're only working with a single socket? Is it to avoid using a class field? It seems like there's little point in doing it, but maybe I'm missing something. How can the state parameter help when dealing with multiple sockets? If I'm calling client.BeginReceive(...), won't all the data be read from the client socket? The devarticles.com tutorial makes it sound like in this call: m_asynResult = m_socClient.BeginReceive (theSocPkt.dataBuffer,0,theSocPkt.dataBuffer.Length, SocketFlags.None,pfnCallBack,theSocPkt); Data will be read from the theSocPkt.thisSocket socket, instead of from the m_socClient socket. In their example the two are one and the same, but what happens if that is not the case? I just don't really see where that last argument is useful or at least how it helps with multiple sockets. If I have multiple sockets, I still need to call BeginReceive on each of them, right?

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• Need a little help with sound in a JApplet

  - by jacob schuschel

  I am working on a solitaire game in Java, and i need to implement sound when the desk is shuffled, card flipped, etc. I used the following sites as reference to try and get it to work, but i am getting Null Pointer Exceptions or mishandled URL exception (depending on what i tweak). here Also, i am using netbeans 6.7.1 as my IDE. I will try to break down the code and explain: package cardgame; import java.applet.*; import java.util.logging.Level; import java.util.logging.Logger; import javax.swing.JApplet; import javax.swing.*; import java.io.*; import java.net.*; /** * * @author jacob */ public class Sound extends JApplet { private AudioClip song; // Sound player private String URL = null; private URL songPath; // Sound path /* *sound_1 = shuffling cards *sound_2 = to discard *sound_3 = from discard *sound_4 = cardflip 1 *sound_5 = cardflip 2 */ Sound(String filename) { try { songPath = new URL(getCodeBase(),filename); // Get the Sound URL } catch (MalformedURLException ex) { Logger.getLogger(Sound.class.getName()).log(Level.SEVERE, null, ex); } song = getAudioClip(songPath); // Load the Sound } Sound(int i) { URL = "./sounds/sound_" + i + ".wav"; System.out.println(URL); try { songPath = new URL(URL); // Get the Sound URL song = getAudioClip(songPath); } catch (MalformedURLException ex) { Logger.getLogger(Sound.class.getName()).log(Level.SEVERE, null, ex); } } public void playSound() { song.loop(); // Play } public void stopSound() { song.stop(); // Stop } public void playSoundOnce() { song.play(); // Play only once } } The 2 different construcors are for different ways i tried to implement this. The first one creates the filepath, and passes it in. The second one builds the filepath in the constructor, given a sound # (i made a list of what numbers correspond to what sound for reference). I am getting the followig errors out: ./sounds/sound_1.wav Nov 16, 2009 4:14:13 PM cardgame.Sound ./sounds/sound_2.wav SEVERE: null java.net.MalformedURLException: no protocol: ./sounds/sound_1.wav ./sounds/sound_3.wav at java.net.URL.(URL.java:583) at java.net.URL.(URL.java:480) at java.net.URL.(URL.java:429) ./sounds/sound_4.wav ./sounds/sound_5.wav at cardgame.Sound.(Sound.java:46) at cardgame.Game.loadSounds(Game.java:712) at cardgame.Game.(Game.java:62) at cardgame.Main.main(Main.java:25) Nov 16, 2009 4:14:13 PM cardgame.Sound SEVERE: null java.net.MalformedURLException: no protocol: ./sounds/sound_2.wav at java.net.URL.(URL.java:583) at java.net.URL.(URL.java:480) at java.net.URL.(URL.java:429) at cardgame.Sound.(Sound.java:46) at cardgame.Game.loadSounds(Game.java:712) at cardgame.Game.(Game.java:62) at cardgame.Main.main(Main.java:25) Nov 16, 2009 4:14:13 PM cardgame.Sound SEVERE: null java.net.MalformedURLException: no protocol: ./sounds/sound_3.wav at java.net.URL.(URL.java:583) at java.net.URL.(URL.java:480) at java.net.URL.(URL.java:429) at cardgame.Sound.(Sound.java:46) at cardgame.Game.loadSounds(Game.java:712) at cardgame.Game.(Game.java:62) at cardgame.Main.main(Main.java:25) Nov 16, 2009 4:14:13 PM cardgame.Sound SEVERE: null java.net.MalformedURLException: no protocol: ./sounds/sound_4.wav at java.net.URL.(URL.java:583) at java.net.URL.(URL.java:480) at java.net.URL.(URL.java:429) at cardgame.Sound.(Sound.java:46) at cardgame.Game.loadSounds(Game.java:712) at cardgame.Game.(Game.java:62) at cardgame.Main.main(Main.java:25) Nov 16, 2009 4:14:13 PM cardgame.Sound SEVERE: null java.net.MalformedURLException: no protocol: ./sounds/sound_5.wav at java.net.URL.(URL.java:583) at java.net.URL.(URL.java:480) at java.net.URL.(URL.java:429) at cardgame.Sound.(Sound.java:46) at cardgame.Game.loadSounds(Game.java:712) at cardgame.Game.(Game.java:62) at cardgame.Main.main(Main.java:25) Thanks for those who read and more thanks to those who help. I know it is somewhat long, but i would rather get it all out there, than have 50 questions that come back or have people not answer due to lack of initial info. also only lets me post a single link right now, so the links are given below dreamincode.net/forums/showtopic14083.htm stackoverflow.com/questions/512436/java-playing-wav-sounds deitel.com/articles/java_tutorials/20060422/LoadingPlayingAudioClips/index.html

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• Why does this CSS example use "height: 1%" with "overflow: auto"?

  - by Lawrence Lau

  I am reading a HTML and CSS book. It has a sample code of two-column layout. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <style> #main {height: 1%; overflow: auto;} #main, #header, #footer {width: 768px; margin: auto;} #bodycopy { float: right; width: 598px; } #sidebar {margin-right: 608px; } #footer {clear: both; } </style> </head> <body> <div id="header" style='background-color: #AAAAAA'>This is the header.</div> <div id="main" style='background-color: #EEEEEE'> <div id="bodycopy" style='background-color: #BBBBBB'> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> </div> <div id="sidebar" style='background-color: #CCCCCC'> This is the sidebar. </div> </div> <div id="footer" style='background-color: #DDDDDD'>This is the footer.</div> </body> </html> The author mentions that the use of overflow auto and 1% height will make the main area expand to encompass the computed height of content. I try to remove the 1% height and tried in different browsers but they don't show a difference. I am quite confused of its use. Any idea?

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• Interactive Data Language, IDL: Does anybody care?

  - by Alex

  Anyone use a language called Interactive Data Language, IDL? It is popular with scientists. I think it is a poor language because it is proprietary (every terminal running it has to have an expensive license purchased) and it has minimal support (try searching for IDL, the language, right now on stack) . I am trying to convince my colleagues to stop using it and learn C/C++/Python/Fortran/Java/Ruby. Does anybody know about or even care about IDL enough to have opinions on it? What do you think of it? Should I tell my colleagues to stop wasting their time on it now? How can I convince them? Edit: People are getting the impression that I don't know or use IDL. Also, I said IDL has minimal support which is true in one sense, so I must clarify that the scientific libraries are indeed large. I use IDL all the time, but this is exactly the problem: I am only using IDL because colleagues use it. There is a file format IDL uses, the .sav, which can only be opened in IDL. So I must use IDL to work with this data and transfer the data back to colleagues, but I know I would be more efficient in another language. This is like someone sending you a microsoft word file in an email attachment and if you don't understand how wrong that is then you probably write too many words not enough code and you bought microsoft word. Edit: As an alternative to IDL Python is popular. Here is a list of The Pros of IDL (and the cons) from AstroBetter: Pros of IDL Mature many numerical and astronomical libraries available Wide astronomical user base Numerical aspect well integrated with language itself Many local users with deep experience Faster for small arrays Easier installation Good, unified documentation Standard GUI run/debug tool (IDLDE) Single widget system (no angst about which to choose or learn) SAVE/RESTORE capability Use of keyword arguments as flags more convenient Cons of IDL Narrow applicability, not well suited to general programming Slower for large arrays Array functionality less powerful Table support poor Limited ability to extend using C or Fortran, such extensions hard to distribute and support Expensive, sometimes problem collaborating with others that don’t have or can’t afford licenses. Closed source (only RSI can fix bugs) Very awkward to integrate with IRAF tasks Memory management more awkward Single widget system (useless if working within another framework) Plotting: Awkward support for symbols and math text Many font systems, portability issues (v5.1 alleviates somewhat) not as flexible or as extensible plot windows not intrinsically interactive (e.g., pan & zoom) Pros of Python Very general and powerful programming language, yet easy to learn. Strong, but optional, Object Oriented programming support Very large user and developer community, very extensive and broad library base Very extensible with C, C++, or Fortran, portable distribution mechanisms available Free; non-restrictive license; Open Source Becoming the standard scripting language for astronomy Easy to use with IRAF tasks Basis of STScI application efforts More general array capabilities Faster for large arrays, better support for memory mapping Many books and on-line documentation resources available (for the language and its libraries) Better support for table structures Plotting framework (matplotlib) more extensible and general Better font support and portability (only one way to do it too) Usable within many windowing frameworks (GTK, Tk, WX, Qt…) Standard plotting functionality independent of framework used plots are embeddable within other GUIs more powerful image handling (multiple simultaneous LUTS, optional resampling/rescaling, alpha blending, etc) Support for many widget systems Strong local influence over capabilities being developed for Python Cons of Python More items to install separately Not as well accepted in astronomical community (but support clearly growing) Scientific libraries not as mature: Documentation not as complete, not as unified Not as deep in astronomical libraries and utilities Not all IDL numerical library functions have corresponding functionality in Python Some numeric constructs not quite as consistent with language (or slightly less convenient than IDL) Array indexing convention “backwards” Small array performance slower No standard GUI run/debug tool Support for many widget systems (angst regarding which to choose) Current lack of function equivalent to SAVE/RESTORE in IDL matplotlib does not yet have equivalents for all IDL 2-D plotting capability (e.g., surface plots) Use of keyword arguments used as flags less convenient Plotting: comparatively immature, still much development going on missing some plot type (e.g., surface) 3-d capability requires VTK (though matplotlib has some basic 3-d capability)

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• iPhone SDK 3/4 App will not run on a iPhone 2.x device even with deployment target set to 2.0!

  - by MarqueIV

  Ok... I know about the difference between the base/active SDKs and the deployment target. I have my base SDK set at 4.0 and the deployment target set at 2.0. I am not using any APIs post 2.x, conditional or otherwise. Since I can't debug on a 2.x device, after building it, I use the iPhone Configuration Utility to install the app on the device, which it does just fine. Problem is, it doesn't run! I just get a blank screen. The main window never comes up! Now before you ask... I had this same problem with the iPhone SDK 3.x. I upgraded to the 4.x hoping it would be solved. It wasn't. Yes the provisioning profile is installed. (Couldn't install the app if it wasn't.) This same compiled app works fine on 3.x devices. Same with 4.x devices. Just not 2.x devices. Again, no I am not using any post-2.x SDKs. To prove this I created a brand-new, window-based app from the 'New Project' dialog and the only changes I made was the background color of the window (to prove the XIB loaded) and I set the deployment target to 2.0 (It's still compiled against the 4.x SDK though.) Again, it runs fine on 3.x or 4.x devices, but just a black, blank screen on 2.x devices. I've tried this on three separate 2.x devices included one freshly restored. I've used three separate dev machines (MacBook Pro with the 3.x SDK, MacBook Pro with the 4.x SDK and a Mac Pro with the 3.x SDK.) Same result every time. I am stumped. The fact that even an unmodified project doesn't run really has me confused. Could it be the XIB file? Did they change the format from 2.x to something newer in the 3.x SDK? If so, how do I set it back to 2.x. (Again, this is just a complete guess.) But I'm really stumped! Mark

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• Vector math, finding coördinates on a planar between 2 vectors

  - by Will Kru

  I am trying to generate a 3d tube along a spline. I have the coördinates of the spline (x1,y1,z1 - x2,y2,z2 - etc) which you can see in the illustration in yellow. At those points I need to generate circles, whose vertices are to be connected at a later stadium. The circles need to be perpendicular to the 'corners' of two line segments of the spline to form a correct tube. Note that the segments are kept low for illustration purpose. [apparently I'm not allowed to post images so please view the image at this link] http://img191.imageshack.us/img191/6863/18720019.jpg I am as far as being able to calculate the vertices of each ring at each point of the spline, but they are all on the same planar ie same angled. I need them to be rotated according to their 'legs' (which A & B are to C for instance). I've been thinking this over and thought of the following: two line segments can be seen as 2 vectors (in illustration A & B) the corner (in illustraton C) is where a ring of vertices need to be calculated I need to find the planar on which all of the vertices will reside I then can use this planar (=vector?) to calculate new vectors from the center point, which is C and find their x,y,z using radius * sin and cos However, I'm really confused on the math part of this. I read about the dot product but that returns a scalar which I don't know how to apply in this case. Can someone point me into the right direction? [edit] To give a bit more info on the situation: I need to construct a buffer of floats, which -in groups of 3- describe vertex positions and will be connected by OpenGL ES, given another buffer with indices to form polygons. To give shape to the tube, I first created an array of floats, which -in groups of 3- describe control points in 3d space. Then along with a variable for segment density, I pass these control points to a function that uses these control points to create a CatmullRom spline and returns this in the form of another array of floats which -again in groups of 3- describe vertices of the catmull rom spline. On each of these vertices, I want to create a ring of vertices which also can differ in density (amount of smoothness / vertices per ring). All former vertices (control points and those that describe the catmull rom spline) are discarded. Only the vertices that form the tube rings will be passed to OpenGL, which in turn will connect those to form the final tube. I am as far as being able to create the catmullrom spline, and create rings at the position of its vertices, however, they are all on a planars that are in the same angle, instead of following the splines path. [/edit] Thanks!

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• progressIndicator does not update till about 10 seconds after awakeFromNib occures

  - by theprojectabot

  I have been trying to get this one section of my UI to immediatly up date when the document loads into view. The awakeFromNib fires the pasted code and then starts a timer to repeat every 10 seconds... I load a default storage location: ~/Movies... which shows up immediately.. yet the network location that is saved in the document that gets pulled from the XML only seems to show up after the second firing of the - (void)updateDiskSpaceDisplay timer. I have set breakpoints and know that the ivars that contain the values that are being put into the *fileSystemAttributes is the network location right when the awakeFromNib occurs... Im confused why it magically appears after the second time firing instead of immediately displaying the write values. - (void)updateDiskSpaceDisplay { // Obtain information about the file system used on the selected storage path. NSError *error = NULL; NSDictionary *fileSystemAttributes = [[NSFileManager defaultManager] attributesOfFileSystemForPath:[[[self settings] containerSettings] storagePath] error:&error]; if( !fileSystemAttributes ) return; // Get the byte capacity of the drive. long long byteCapacity = [[fileSystemAttributes objectForKey:NSFileSystemSize] unsignedLongLongValue]; // Get the number of free bytes. long long freeBytes = [[fileSystemAttributes objectForKey:NSFileSystemFreeSize] unsignedLongLongValue]; // Update the level indicator, and the text fields to show the current information. [totalDiskSpaceField setStringValue:[self formattedStringFromByteCount:byteCapacity]]; [totalDiskSpaceField setNeedsDisplay:YES]; [usedDiskSpaceField setStringValue:[self formattedStringFromByteCount:(byteCapacity - freeBytes)]]; [usedDiskSpaceField setNeedsDisplay:YES]; [diskSpaceIndicator setMaxValue:100]; [diskSpaceIndicator setIntValue:(((float) (byteCapacity - freeBytes) / (float) byteCapacity) * 100.0)]; [diskSpaceIndicator display:YES]; } thoughts? my awakeFromNib: - (void)awakeFromNib { [documentWindow setAcceptsMouseMovedEvents:YES]; [documentWindow setDelegate:self]; [self updateSettingsDisplay]; [self updateDiskSpaceDisplay]; [self setDiskSpaceUpdateTimer:[NSTimer scheduledTimerWithTimeInterval:10.0 target:self selector:@selector(updateDiskSpaceDisplay) userInfo:NULL repeats:YES]]; [self setUpClipInfoTabButtons]; [self performSelector:@selector(setupEngineController) withObject:NULL afterDelay:0.1]; }

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• What is it about DataTable Column Names with dots that makes them unsuitable for WPF's DataGrid cont

  - by Tom Ritter

  Run this, and be confused: <Window x:Class="Fucking_Data_Grids.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"> <StackPanel> <DataGrid Name="r1" ItemsSource="{Binding Path=.}"> </DataGrid> <DataGrid Name="r2" ItemsSource="{Binding Path=.}"> </DataGrid> </StackPanel> </Window> Codebehind: using System.Data; using System.Windows; namespace Fucking_Data_Grids { public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); DataTable dt1, dt2; dt1 = new DataTable(); dt2 = new DataTable(); dt1.Columns.Add("a-name", typeof(string)); dt1.Columns.Add("b-name", typeof(string)); dt1.Rows.Add(new object[] { 1, "Hi" }); dt1.Rows.Add(new object[] { 2, "Hi" }); dt1.Rows.Add(new object[] { 3, "Hi" }); dt1.Rows.Add(new object[] { 4, "Hi" }); dt1.Rows.Add(new object[] { 5, "Hi" }); dt1.Rows.Add(new object[] { 6, "Hi" }); dt1.Rows.Add(new object[] { 7, "Hi" }); dt2.Columns.Add("a.name", typeof(string)); dt2.Columns.Add("b.name", typeof(string)); dt2.Rows.Add(new object[] { 1, "Hi" }); dt2.Rows.Add(new object[] { 2, "Hi" }); dt2.Rows.Add(new object[] { 3, "Hi" }); dt2.Rows.Add(new object[] { 4, "Hi" }); dt2.Rows.Add(new object[] { 5, "Hi" }); dt2.Rows.Add(new object[] { 6, "Hi" }); dt2.Rows.Add(new object[] { 7, "Hi" }); r1.DataContext = dt1; r2.DataContext = dt2; } } } I'll tell you what happens. The top datagrid is populated with column headers and data. The bottom datagrid has column headers but all the rows are blank.

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• Dropdownlist and Datareader

  - by salvationishere

  After trying many solutions listed on the internet I am very confused now. I have a C#/SQL web application for which I am simply trying to bind an ExecuteReader command to a Dropdownlist so the user can select a value. This is a VS2008 project on an XP OS. How it works is after the user selects a table, I use this selection as an input parameter to a method from my Datamatch.aspx.cs file. Then this Datamatch.aspx.cs file calls a method from my ADONET.cs class file. Finally this method executes a SQL procedure to return the list of columns from that table. (These are all tables in Adventureworks DB). I know that this method returns successfully the list of columns if I execute this SP in SSMS. However, I'm not sure how to tell if it works in VS or not. This should be simple. How can I do this? Here is some of my code. The T-sQL stored proc: CREATE PROCEDURE [dbo].[getColumnNames] @TableName VarChar(50) AS BEGIN SET NOCOUNT ON; SELECT col.name 'COLUMN_NAME' FROM sysobjects obj INNER JOIN syscolumns col ON obj.id = col.id WHERE obj.name = @TableName END It gives me desired output when I execute following from SSMS: exec getColumnNames 'AddressType' And the code from Datamatch.aspx.cs file currently is: // Add DropDownList Control to Placeholder private void CreateDropDownLists() { SqlDataReader dr2 = ADONET_methods.DisplayTableColumns(targettable); int NumControls = targettable.Length; DropDownList ddl = new DropDownList(); } Where ADONET_methods.DisplayTableColumns(targettable) is: public static SqlDataReader DisplayTableColumns(string tt) { SqlDataReader dr = null; string TableName = tt; string connString = "Server=(local);Database=AdventureWorks;Integrated Security = SSPI"; string errorMsg; SqlConnection conn2 = new SqlConnection(connString); SqlCommand cmd = new SqlCommand("getColumnNames"); //conn2.CreateCommand(); try { cmd.CommandType = CommandType.StoredProcedure; cmd.Connection = conn2; SqlParameter parm = new SqlParameter("@TableName", SqlDbType.VarChar); parm.Value = "Person." + TableName.Trim(); parm.Direction = ParameterDirection.Input; cmd.Parameters.Add(parm); conn2.Open(); dr = cmd.ExecuteReader(); } catch (Exception ex) { errorMsg = ex.Message; } return dr; }

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