circular reference - Page 447

Does Apache ever give incorrect "out of threads" errors?

- by Eli Courtwright

Lately our Apache web server has been giving us this error multiple times per day: [Tue Apr 06 01:07:10 2010] [error] Server ran out of threads to serve requests. Consider raising the ThreadsPerChild setting We raised our ThreadsPerChild setting from 50 to 100, but we still get the error. Our access logs indicate that these errors never even happen at periods of high load. For example, here's an excerpt from our access log (ip addresses and some urls are edited for privacy). As you can see, the above error happened at 1:07 and only a small handful of requests occurred in the several minutes leading up to the error: 99.88.77.66 - - [06/Apr/2010:00:59:33 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/css/smoothness/images/ui-icons_222222_256x240.png HTTP/1.1" 304 - 99.88.77.66 - - [06/Apr/2010:00:59:34 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/css/smoothness/images/ui-bg_glass_75_dadada_1x400.png HTTP/1.1" 200 111 99.88.77.66 - - [06/Apr/2010:00:59:34 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/css/smoothness/images/ui-bg_glass_75_dadada_1x400.png HTTP/1.1" 200 111 99.88.77.66 - mpeu [06/Apr/2010:00:59:40 -0400] "GET /some/dynamic/content HTTP/1.1" 200 145049 55.44.33.22 - mpeu [06/Apr/2010:01:06:56 -0400] "GET /other/dynamic/content HTTP/1.1" 200 12311 55.44.33.22 - - [06/Apr/2010:01:06:56 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/css/smoothness/jquery-ui-1.7.1.custom.css HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:56 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/js/jquery-1.3.2.min.js HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:56 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/js/jquery-ui-1.7.1.custom.min.js HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:56 -0400] "GET /WebRepository/jquery.tablesorter.min.js HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:56 -0400] "GET /WebRepository/date.js HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:56 -0400] "GET /WebRepository/pdfs/image1.gif HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:56 -0400] "GET /WebRepository/pdfs/image2.png HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:56 -0400] "GET /WebRepository/pdfs/image3.png HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:56 -0400] "GET /WebRepository/pdfs/image4.png HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:56 -0400] "GET /WebRepository/pdfs/image5.png HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:56 -0400] "GET /WebRepository/pdfs/image6.png HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:56 -0400] "GET /WebRepository/pdfs/image7.png HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:57 -0400] "GET /WebRepository/pdfs/image8.png HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:57 -0400] "GET /WebRepository/pdfs/image9.png HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:57 -0400] "GET /WebRepository/pdfs/imageA.png HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:57 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/css/smoothness/images/ui-bg_flat_75_ffffff_40x100.png HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:59 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/css/smoothness/images/ui-bg_highlight-soft_75_cccccc_1x100.png HTTP/1.1" 304 - 55.44.33.22 - - [06/Apr/2010:01:06:59 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/css/smoothness/images/ui-bg_glass_75_e6e6e6_1x400.png HTTP/1.1" 200 110 55.44.33.22 - - [06/Apr/2010:01:06:59 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/css/smoothness/images/ui-bg_glass_75_e6e6e6_1x400.png HTTP/1.1" 200 110 11.22.33.44 - mpeu [06/Apr/2010:01:18:03 -0400] "GET /other/dynamic/content HTTP/1.1" 200 12311 11.22.33.44 - - [06/Apr/2010:01:18:03 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/js/jquery-1.3.2.min.js HTTP/1.1" 304 - 11.22.33.44 - - [06/Apr/2010:01:18:04 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/css/smoothness/jquery-ui-1.7.1.custom.css HTTP/1.1" 200 27374 11.22.33.44 - - [06/Apr/2010:01:18:04 -0400] "GET /WebRepository/jquery/jquery-ui-1.7.1.custom/js/jquery-ui-1.7.1.custom.min.js HTTP/1.1" 304 - 11.22.33.44 - - [06/Apr/2010:01:18:04 -0400] "GET /WebRepository/jquery.tablesorter.min.js HTTP/1.1" 200 12795 11.22.33.44 - - [06/Apr/2010:01:18:04 -0400] "GET /WebRepository/date.js HTTP/1.1" 200 25809 For what it's worth, we're running the version of Apache that ships with Oracle 10g (some 2.0 version), and we're using mod_plsql to generate our dynamic content. Since the Apache server runs as a separate process and the database doesn't record any problems when this error occurs, I'm doubtful that Oracle is the problem. Unfortunately, the errors are freaking out our sysadmins, who are inclined to blame any and all problems which occur with the server on this error. Is this a known bug in Apache that I simply haven't been able to find any reference to through Google?

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c# opennetCF background worker - e.result gives a ObjectDisposedException

- by ikky

Hi! I'm new working with background worker in C#. Here is a class, and under it, you will find the instansiation of it, and under there i will define my problem for you: I have the class Drawing: class Drawing { BackgroundWorker bgWorker; ProgressBar progressBar; Panel panelHolder; public Drawing(ref ProgressBar pgbar, ref Panel panelBig) // Progressbar and panelBig as reference { this.panelHolder = panelBig; this.progressBar = pgbar; bgWorker = new BackgroundWorker(); bgWorker.WorkerReportsProgress = true; bgWorker.WorkerSupportsCancellation = true; bgWorker.DoWork += new OpenNETCF.ComponentModel.DoWorkEventHandler(this.bgWorker_DoWork); bgWorker.RunWorkerCompleted += new OpenNETCF.ComponentModel.RunWorkerCompletedEventHandler(this.bgWorker_RunWorkerCompleted); bgWorker.ProgressChanged += new OpenNETCF.ComponentModel.ProgressChangedEventHandler(this.bgWorker_ProgressChanged); } public void createDrawing() { bgWorker.RunWorkerAsync(); } private void bgWorker_DoWork(object sender, DoWorkEventArgs e) { Panel panelContainer = new Panel(); // Adding panels to the panelContainer for(i=0; i<100; i++) { Panel panelSubpanel = new Panel(); // Setting size, color, name etc.... panelContainer.Controls.Add(panelSubpanel); // Adding the subpanel to the panelContainer //Report the progress bgWorker.ReportProgress(0, i); // Reporting number of panels loaded } e.Result = imagePanel; // Send the result(a panel with lots of subpanels) as an argument } private void bgWorker_ProgressChanged(object sender, ProgressChangedEventArgs e) { this.progressBar.Value = (int)e.UserState; this.progressBar.Update(); } private void bgWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { if (e.Error == null) { this.panelHolder = (Panel)e.Result; } else { MessageBox.Show("An error occured, please try again"); } } } Instansiating an object of this class: public partial class Draw: Form { public Draw() { ProgressBar progressBarLoading = new ProgressBar(); // Set lots of properties on progressBarLoading Panel panelBigPanelContainer = new Panel(); Drawing drawer = new Drawing(ref progressBarLoading, ref panelBigPanelContainer); drawer.createDrawing(); // this makes the object start a new thread, loading all the panels into a panel container, while also sending the progress to this progressbar. } } Here is my problem: In the private void bgWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) i don't get the e.Result as it should be. When i debug and look at the e.Result, the panel's properties have this exception message: '((System.Windows.Forms.Control)(e.Result)).ClientSize' threw an exception of type 'System.ObjectDisposedException' So the object gets disposed, but "why" is my question, and how can i fix this? I hope someone will answer me, this is making me crazy. Another question i have: Is it allowed to use "ref" with arguments? is it bad programming? Thanks in advance. I have also written how i understand the Background worker below here: This is what i think is the "rules" for background workers: bgWorker.RunWorkerAsync(); => starts a new thread. bgWorker_DoWork cannot reach the main thread without delegates - private void bgWorker_DoWork(object sender, DoWorkEventArgs e) { // The work happens here, this is a thread that is not reachable by the main thread e.Result => This is an argument which can be reached by bgWorker_RunWorkerCompleted() bgWorker.ReportProgress(progressVar); => Reports the progress to the bgWorker_ProgressChanged() } - private void bgWorker_ProgressChanged(object sender, ProgressChangedEventArgs e) { // I get the progress here, and can do stuff to the main thread from here (e.g update a control) this.ProgressBar.Value = e.ProgressPercentage; } - private void bgWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { // This is where the thread is completed. // Here i can get e.Result from the bgWorker thread // From here i can reach controls in my main thread, and use e.Result in my main thread if (e.Error == null) { this.panelTileHolder = (Panel)e.Result; } else { MessageBox.Show("There was an error"); } }

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HOWTO: Migrate SharePoint site from one farm to another?

- by Ramiz Uddin

Hi Everyone, I've a site deployed on a developed machine. The site was developed under WSS 3.0 which contains custom List, Features, Templates, Styles etc. What I've to do is to create a deployment package (setup) which I can give away to my client. I know about stsadm but I don't have the access of the production machine. Is there a way I can package all the dependencies in a single file (installation file) and run on the server which will include all the dependencies (including site content)? I've tried to experiment this with SharePoint Content Deployment Wizard. It all went well when Export the site but always fail to Import with the following message: [2/2/2010 3:43:25 PM]: Start Time: 2/2/2010 3:43:25 PM. [2/2/2010 3:43:25 PM]: Progress: Initializing Import. [2/2/2010 3:43:42 PM]: FatalError: Could not find WebTemplate #75805 with LCID 1033. at Microsoft.SharePoint.Deployment.ImportRequirementsManager.VerifyWebTemplate(SPRequirementObject reqObj) at Microsoft.SharePoint.Deployment.ImportRequirementsManager.Validate(SPRequirementObject reqObj) at Microsoft.SharePoint.Deployment.ImportRequirementsManager.DeserializeAndValidate() at Microsoft.SharePoint.Deployment.SPImport.VerifyRequirements() at Microsoft.SharePoint.Deployment.SPImport.Run() [2/2/2010 3:43:48 PM]: Progress: Import Completed. [2/2/2010 3:43:48 PM]: Finish Time: 2/2/2010 3:43:48 PM. [2/2/2010 3:43:48 PM]: Completed with 0 warnings. [2/2/2010 3:43:48 PM]: Completed with 1 errors. [2/2/2010 3:44:51 PM]: Start Time: 2/2/2010 3:44:51 PM. [2/2/2010 3:44:51 PM]: Progress: Initializing Import. [2/2/2010 3:45:08 PM]: FatalError: Could not find WebTemplate #75805 with LCID 1033. at Microsoft.SharePoint.Deployment.ImportRequirementsManager.VerifyWebTemplate(SPRequirementObject reqObj) at Microsoft.SharePoint.Deployment.ImportRequirementsManager.Validate(SPRequirementObject reqObj) at Microsoft.SharePoint.Deployment.ImportRequirementsManager.DeserializeAndValidate() at Microsoft.SharePoint.Deployment.SPImport.VerifyRequirements() at Microsoft.SharePoint.Deployment.SPImport.Run() [2/2/2010 3:45:14 PM]: Progress: Import Completed. [2/2/2010 3:45:14 PM]: Finish Time: 2/2/2010 3:45:14 PM. [2/2/2010 3:45:14 PM]: Completed with 0 warnings. [2/2/2010 3:45:14 PM]: Completed with 1 errors. [2/2/2010 3:56:17 PM]: Start Time: 2/2/2010 3:56:17 PM. [2/2/2010 3:56:17 PM]: Progress: Initializing Import. [2/2/2010 3:56:34 PM]: FatalError: Could not find WebTemplate #75805 with LCID 1033. at Microsoft.SharePoint.Deployment.ImportRequirementsManager.VerifyWebTemplate(SPRequirementObject reqObj) at Microsoft.SharePoint.Deployment.ImportRequirementsManager.Validate(SPRequirementObject reqObj) at Microsoft.SharePoint.Deployment.ImportRequirementsManager.DeserializeAndValidate() at Microsoft.SharePoint.Deployment.SPImport.VerifyRequirements() at Microsoft.SharePoint.Deployment.SPImport.Run() [2/2/2010 3:56:39 PM]: Progress: Import Completed. [2/2/2010 3:56:39 PM]: Finish Time: 2/2/2010 3:56:39 PM. [2/2/2010 3:56:39 PM]: Completed with 0 warnings. [2/2/2010 3:56:39 PM]: Completed with 1 errors. I actually couldn't find a good reference on how to use it. But, this software doesn't something I'm looking for which can create a simple deployment package (after that you don't need to do anything). I might not be correct but after two days of googling I think there is no such utility (freeware) that can create a simple package of a site and install on other farm without even need to configure anything before you run the installation package. You people might have an advise which can help me to look/think outside the box and get to the solution quickly instead adding more days working on the problem. Please, share only freewares. I can't afford to buy anything. I'm waiting to be surprised with a good share :) Have a good day! Thanks.

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How to create an array of User Objects in Powerbuilder?

- by TomatoSandwich

The application has many different windows. One is a single 'row' window, which relates to a single row of data in a table, say 'Order'. Another is a 'multiple row' datawindow, where each row in the datawindow relates to a row in 'Order', used for spreadsheet-like data entry Functionality extentions have create a detail table, say 'Suppliers', where an order may require multiple suppliers to fill the order. Normally, suppliers are not required, because they are already in the warehouse (0), or there may need to be an order to a supplier to complete an order (1), or multiple suppliers may need to be contacted (more than one). As a single order is entered, once the items are entered, a User Object is populated depending on the status of the items in the warehouse. If required, this creates a 1-to-many relationship between the order and the "backorder". In the PB side, there is a single object uo_backorder which is created on the window, and is referenced by the window depending on the command (button popup, save, etc) I have been tasked to create the 'backorder' functionality on the spreadsheet-line window. Previously the default options for backorders were used when orders were created from the multiple-row window. A workaround already exists where unconfirmed orders could be opened in the single-row window, and the backorder information manipulated there. However, the userbase wants this functionality on the one window. Since the functionality of uo_backorder already exists, I assumed I could just copy the code from the single-order window, but create an array of uo_backorder objects to cope with multiple rows. I tried the following: forward .. type uo_backorder from popupdwpb within w_order_conv end type end forward global type w_order_conv from singleform .. uo_backorder uo_backorder end type type variables .. uo_backorder iuo_backorders[] end variables .. public function boolean iuo_backorders(); .. long ll_count ll_count = UpperBound(iuo_backorders[]) iuo_backorders[ll_count+1] = uo_backorder //THIS ISN'T RIGHT lb_ok = iuo_backorders[ll_count+1].init('w_backorder_popup', '', '', '', 'd_backorder_popup', sqlca, useTransObj()) return lb_ok end function .. <utility functions> .. type uo_backorder from popupdwpb within w_order_conv integer x = 28 integer y = 28 integer width ... end type on uo_backorder.destroy call popupdwpb::destroy end on The issue I face now is that the code commented "THIS ISN'T RIGHT" isn't correct. It is associating the visual object placed on the face of the main window to each array cell, so anytime I reference the array cell object it's actually referencing the one original object, not the new instances that I (thought) I was creating. If I change the code iuo_backorders[ll_count+1] = create uo_backorder the code doesn't run, saying that it failed to initalize the popup window. I think this is related to the class being called the same thing as the instance. What I want to end up with is an array of uo_backorder objects that I can associate to each row of my datawindow (first row = first cell, etc). I think the issue lays in the fact it's a visual object, and I can't seem to get the window to run without adding a dummy object on the face of the window (functionality from the original single-row window). Since it's a VISUAL object, does the object indeed need to be embedded on the windowface for the window to know what object I'm talking about? If so, how does one create multiple windowface objects (one to many, depending on when a row is added)? Don't hesitate to inquire regarding any more information this issue may require from myself. I have no idea what is 'standard' or 'default' in PB, or what is custom and needs more explaining.

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Flex 4, chart, Error 1009

- by Stephane

Hello, I am new to flex development and I am stuck with this error TypeError: Error #1009: Cannot access a property or method of a null object reference. at mx.charts.series::LineSeries/findDataPoints()[E:\dev\4.0.0\frameworks\projects\datavisualization\src\mx\charts\series\LineSeries.as:1460] at mx.charts.chartClasses::ChartBase/findDataPoints()[E:\dev\4.0.0\frameworks\projects\datavisualization\src\mx\charts\chartClasses\ChartBase.as:2202] at mx.charts.chartClasses::ChartBase/mouseMoveHandler()[E:\dev\4.0.0\frameworks\projects\datavisualization\src\mx\charts\chartClasses\ChartBase.as:4882] I try to create a chart where I can move the points with the mouse I notice that the error doesn't occur if I move the point very slowly I have try to use the debugger and pint some debug every where without success All the behaviours were ok until I had the modifyData Please let me know if you have some experience with this kind of error I will appreciate any help. Is it also possible to remove the error throwing because after that the error occur if I click the dismiss all error button then the component work great there is the simple code of the chart <fx:Declarations> </fx:Declarations> <fx:Script> <![CDATA[ import mx.charts.HitData; import mx.charts.events.ChartEvent; import mx.charts.events.ChartItemEvent; import mx.collections.ArrayCollection; [Bindable] private var selectItem:Object; [Bindable] private var chartMouseY:int; [Bindable] private var hitData:Boolean=false; [Bindable] private var profitPeriods:ArrayCollection = new ArrayCollection( [ { period: "Qtr1 2006", profit: 32 }, { period: "Qtr2 2006", profit: 47 }, { period: "Qtr3 2006", profit: 62 }, { period: "Qtr4 2006", profit: 35 }, { period: "Qtr1 2007", profit: 25 }, { period: "Qtr2 2007", profit: 55 } ]); public function chartMouseUp(e:MouseEvent):void{ if(hitData){ hitData = false; } } private function chartMouseMove(e:MouseEvent):void { if(hitData){ var p:Point = new Point(linechart.mouseX,linechart.mouseY); var d:Array = linechart.localToData(p); chartMouseY=d[1]; modifyData(); } } public function modifyData():void { var idx:int = profitPeriods.getItemIndex(selectItem); var item:Object = profitPeriods.getItemAt(idx); item.profit = chartMouseY; profitPeriods.setItemAt(item,idx); } public function chartMouseDown(e:MouseEvent):void{ if(!hitData){ var hda:Array = linechart.findDataPoints(e.currentTarget.mouseX, e.currentTarget.mouseY); if (hda[0]) { selectItem = hda[0].item; hitData = true; } } } ]]> </fx:Script> <s:layout> <s:HorizontalLayout horizontalAlign="center" verticalAlign="middle" /> </s:layout> <s:Panel title="LineChart Control" > <s:VGroup > <s:HGroup> <mx:LineChart id="linechart" color="0x323232" height="500" width="377" mouseDown="chartMouseDown(event)" mouseMove="chartMouseMove(event)" mouseUp="chartMouseUp(event)" showDataTips="true" dataProvider="{profitPeriods}" > <mx:horizontalAxis> <mx:CategoryAxis categoryField="period"/> </mx:horizontalAxis> <mx:series> <mx:LineSeries yField="profit" form="segment" displayName="Profit"/> </mx:series> </mx:LineChart> <mx:Legend dataProvider="{linechart}" color="0x323232"/> </s:HGroup> <mx:Form> <mx:TextArea id="DEBUG" height="200" width="300"/> </mx:Form> </s:VGroup> </s:Panel> UPDATE 30/2010 : the null object is _renderData.filteredCache from the chartline the code call before error is the default mouseMoveHandler of chartBase to chartline. Is it possible to remove it ? or provide a filteredCache

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ASMX Web Services with SOAP Extension

- by digitall

I am in the process of setting up a web service for an external client to connect to my client's application and update some information. I went the ASMX route (the rest of the application runs on WCF) because I knew the external client could be very difficult to deal with and I was trying to keep everything as simple as possible. They also aren't a .Net shop which makes things worse. After getting the service setup for them I provided the ASMX URL for them to see how to format the SOAP headers/message content. They have since come back and told me their tool is unable to send them in the format required by .Net and I can either come up with a different way to accept messages or we have to go with FTP. Based on this I have been researching how to intercept their message, reformat it the way my service requires it (which means adding two lines), and then let it process. This path led me to SOAP Extensions which I have been trying to work with but can't seem to figure out. When I have my sample application call the web service from the generated code Add Web Reference provides everything works great until I add in my extension. All it currently does is override ChainStream setting an internal stream equal to the one being passed in and returning a new stream, like this: private Stream newStream = null; private Stream oldStream = null; public override Stream ChainStream(Stream stream) { this.oldStream = stream; this.newStream = new MemoryStream(); return newStream; } I also override ProcessMessage and in it take the contents of oldStream and set newStream equal to that and then write to a different stream with an XmlWriter. I take that new stream and using a StreamReader read it into a string, with the end goal being manipulating it here and setting newStream (which is being used by ChainStream) equal to the contents of this. Here is that piece: public override void ProcessMessage(SoapMessage message) { switch (message.Stage) { case SoapMessageStage.BeforeDeserialize: this.Process(); break; default: break; } } private void Process() { this.newStream.Position = 0L; XmlTextReader reader = new XmlTextReader(this.oldStream); MemoryStream outStream = new MemoryStream(); using (XmlWriter writer = XmlWriter.Create(outStream)) { do { writer.WriteNode(reader, true); } while (reader.Read()); writer.Flush(); } outStream.Seek(0, SeekOrigin.Begin); StreamReader streamReader = new StreamReader(outStream); string message = streamReader.ReadToEnd(); newStream = outStream; newStream.Seek(0, SeekOrigin.Begin); streamReader.Close(); } By running this, which seems to me like it would be fine, my test application gets a 400 Bad Request back from the service. If I either don't use the extension or I don't do anything in ProcessMessage everything seems fine. Any suggestions to this? As a side note, once I get this working with the generated code from the WSDL I will be moving to a WebRequest to try sending the message to the service. Currently that bombs out with a 415 Unsupported Media Type response. I'm trying to keep this post to one question but if anyone has any tips with using a WebRequest to connect to an ASMX service it would be much appreciated!

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Constant Memory Leak in SpeechSynthesizer

- by DudeFX

I have developed a project which I would like to release which uses c#, WPF and the System.Speech.Synthesizer object. The issue preventing the release of this project is that whenever SpeakAsync is called it leaves a memory leak that grows to the point of eventual failure. I believe I have cleaned up properly after using this object, but cannot find a cure. I have run the program through Ants Memory Profiler and it reports that WAVEHDR and WaveHeader is growing with each call. I have created a sample project to try to pinpoint the cause, but am still at a loss. Any help would be appreciated. The project uses VS2008 and is a c# WPF project that targets .NET 3.5 and Any CPU. You need to manually add a reference to System.Speech. Here is the Code: <Window x:Class="SpeechTest.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300"> <Grid> <StackPanel Orientation="Vertical"> <Button Content="Start Speaking" Click="Start_Click" Margin="10" /> <Button Content="Stop Speaking" Click="Stop_Click" Margin="10" /> <Button Content="Exit" Click="Exit_Click" Margin="10"/> </StackPanel> </Grid> // Start of code behind using System; using System.Windows; using System.Speech.Synthesis; namespace SpeechTest { public partial class Window1 : Window { // speak setting private bool speakingOn = false; private int curLine = 0; private string [] speakLines = { "I am wondering", "Why whenever Speech is called", "A memory leak occurs", "If you run this long enough", "It will eventually crash", "Any help would be appreciated" }; public Window1() { InitializeComponent(); } private void Start_Click(object sender, RoutedEventArgs e) { speakingOn = true; SpeakLine(); } private void Stop_Click(object sender, RoutedEventArgs e) { speakingOn = false; } private void Exit_Click(object sender, RoutedEventArgs e) { App.Current.Shutdown(); } private void SpeakLine() { if (speakingOn) { // Create our speak object SpeechSynthesizer spk = new SpeechSynthesizer(); spk.SpeakCompleted += new EventHandler(spk_Completed); // Speak the line spk.SpeakAsync(speakLines[curLine]); } } public void spk_Completed(object sender, SpeakCompletedEventArgs e) { if (sender is SpeechSynthesizer) { // get access to our Speech object SpeechSynthesizer spk = (SpeechSynthesizer)sender; // Clean up after speaking (thinking the event handler is causing the memory leak) spk.SpeakCompleted -= new EventHandler(spk_Completed); // Dispose the speech object spk.Dispose(); // bump it curLine++; // check validity if (curLine = speakLines.Length) { // back to the beginning curLine = 0; } // Speak line SpeakLine(); } } } } I run this program on Windows 7 64 bit and it will run and eventually halt when attempting to create a new SpeechSynthesizer object. When run on Windows Vista 64 bit the memory will grow from a starting point of 34k to so far about 400k and growing. Can anyone see anything in the code that might be causing this, or is this an issue with the Speech object itself. Any help would be appreciated.

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.NET 4.0 Dynamic object used statically?

- by Kevin Won

I've gotten quite sick of XML configuration files in .NET and want to replace them with a format that is more sane. Therefore, I'm writing a config file parser for C# applications that will take a custom config file format, parse it, and create a Python source string that I can then execute in C# and use as a static object (yes that's right--I want a static (not the static type dyanamic) object in the end). Here's an example of what my config file looks like: // my custom config file format GlobalName: ExampleApp Properties { ExternalServiceTimeout: "120" } Python { // this allows for straight python code to be added to handle custom config def MyCustomPython: return "cool" } Using ANTLR I've created a Lexer/Parser that will convert this format to a Python script. So assume I have that all right and can take the .config above and run my Lexer/Parser on it to get a Python script out the back (this has the added benefit of giving me a validation tool for my config). By running the resultant script in C# // simplified example of getting the dynamic python object in C# // (not how I really do it) ScriptRuntime py = Python.CreateRuntime(); dynamic conf = py.UseFile("conftest.py"); dynamic t = conf.GetConfTest("test"); I can get a dynamic object that has my configuration settings. I can now get my config file settings in C# by invoking a dynamic method on that object: //C# calling a method on the dynamic python object var timeout = t.GetProperty("ExternalServiceTimeout"); //the config also allows for straight Python scripting (via the Python block) var special = t.MyCustonPython(); of course, I have no type safety here and no intellisense support. I have a dynamic representation of my config file, but I want a static one. I know what my Python object's type is--it is actually newing up in instance of a C# class. But since it's happening in python, it's type is not the C# type, but dynamic instead. What I want to do is then cast the object back to the C# type that I know the object is: // doesn't work--can't cast a dynamic to a static type (nulls out) IConfigSettings staticTypeConfig = t as IConfigSettings Is there any way to figure out how to cast the object to the static type? I'm rather doubtful that there is... so doubtful that I took another approach of which I'm not entirely sure about. I'm wondering if someone has a better way... So here's my current tactic: since I know the type of the python object, I am creating a C# wrapper class: public class ConfigSettings : IConfigSettings that takes in a dynamic object in the ctor: public ConfigSettings(dynamic settings) { this.DynamicProxy = settings; } public dynamic DynamicProxy { get; private set; } Now I have a reference to the Python dynamic object of which I know the type. So I can then just put wrappers around the Python methods that I know are there: // wrapper access to the underlying dynamic object // this makes my dynamic object appear 'static' public string GetSetting(string key) { return this.DynamicProxy.GetProperty(key).ToString(); } Now the dynamic object is accessed through this static proxy and thus can obviously be passed around in the static C# world via interface, etc: // dependency inject the dynamic object around IBusinessLogic logic = new BusinessLogic(IConfigSettings config); This solution has the benefits of all the static typing stuff we know and love while at the same time giving me the option of 'bailing out' to dynamic too: // the DynamicProxy property give direct access to the dynamic object var result = config.DynamicProxy.MyCustomPython(); but, man, this seems rather convoluted way of getting to an object that is a static type in the first place! Since the whole dynamic/static interaction world is new to me, I'm really questioning if my solution is optimal or if I'm missing something (i.e. some way of casting that dynamic object to a known static type) about how to bridge the chasm between these two universes.

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Object of type 'customObject' cannot be converted to type 'customObject'.

- by Phani Kumar PV

i am receiving the follwing error when i am invoking a custom object "Object of type 'customObject' cannot be converted to type 'customObject'." Following is the scenario when i am getting the error i am invoking a method in a dll dynamically. Load an assembly CreateInstance.... calling MethodInfo.Invoke() passing int, string as a parameter for my method is working fine = No exceptions are thrown. But if I try and pass a one of my own custom class objects as a parameter, then I get an ArgumentException exception, and it is not either an ArgumentOutOfRangeException or ArgumentNullException. "Object of type 'customObject' cannot be converted to type 'customObject'." I am doing this in a web application. The class file containing the method is in a different proj . also the custom object is a sepearte class in the same file. there is no such thing called a static aseembly in my code. I am trying to invoke a webmethod dynamically. this webmethod is having the customObject type as an input parameter. So when i invoke the webmethod i am dynamically creating the proxy assembly and all. From the same assembly i am trying to create an instance of the cusotm object assinging the values to its properties and then passing this object as a parameter and invoking the method. everything is dynamic and nothing is created static.. :( add reference is not used. Following is a sample code i tried to create it public static object CallWebService(string webServiceAsmxUrl, string serviceName, string methodName, object[] args) { System.Net.WebClient client = new System.Net.WebClient(); //-Connect To the web service using (System.IO.Stream stream = client.OpenRead(webServiceAsmxUrl + "?wsdl")) { //--Now read the WSDL file describing a service. ServiceDescription description = ServiceDescription.Read(stream); ///// LOAD THE DOM ///////// //--Initialize a service description importer. ServiceDescriptionImporter importer = new ServiceDescriptionImporter(); importer.ProtocolName = "Soap12"; // Use SOAP 1.2. importer.AddServiceDescription(description, null, null); //--Generate a proxy client. importer.Style = ServiceDescriptionImportStyle.Client; //--Generate properties to represent primitive values. importer.CodeGenerationOptions = System.Xml.Serialization.CodeGenerationOptions.GenerateProperties; //--Initialize a Code-DOM tree into which we will import the service. CodeNamespace nmspace = new CodeNamespace(); CodeCompileUnit unit1 = new CodeCompileUnit(); unit1.Namespaces.Add(nmspace); //--Import the service into the Code-DOM tree. This creates proxy code //--that uses the service. ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit1); if (warning == 0) //--If zero then we are good to go { //--Generate the proxy code CodeDomProvider provider1 = CodeDomProvider.CreateProvider("CSharp"); //--Compile the assembly proxy with the appropriate references string[] assemblyReferences = new string[5] { "System.dll", "System.Web.Services.dll", "System.Web.dll", "System.Xml.dll", "System.Data.dll" }; CompilerParameters parms = new CompilerParameters(assemblyReferences); CompilerResults results = provider1.CompileAssemblyFromDom(parms, unit1); //-Check For Errors if (results.Errors.Count > 0) { StringBuilder sb = new StringBuilder(); foreach (CompilerError oops in results.Errors) { sb.AppendLine("========Compiler error============"); sb.AppendLine(oops.ErrorText); } throw new System.ApplicationException("Compile Error Occured calling webservice. " + sb.ToString()); } //--Finally, Invoke the web service method Type foundType = null; Type[] types = results.CompiledAssembly.GetTypes(); foreach (Type type in types) { if (type.BaseType == typeof(System.Web.Services.Protocols.SoapHttpClientProtocol)) { Console.WriteLine(type.ToString()); foundType = type; } } object wsvcClass = results.CompiledAssembly.CreateInstance(foundType.ToString()); MethodInfo mi = wsvcClass.GetType().GetMethod(methodName); return mi.Invoke(wsvcClass, args); } else { return null; } } } I cant find anything static being done by me. any help is greatly appreciated. Regards, Phani Kumar PV

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Cross Compiling Boost for use on the Gumstix Overo with GumROS

- by amelim

I'm trying to cross-compile boost for use with the ROS framework on a Gumstix Overo. I've been following the posted instructions here (modifying the script when need be), however I've come across an issue where bjam will not compile boost properly. I call bjam as follows: # boost if [ ! -f /opt/gumros/lib/libboost_date_time-gcc41-mt-1_38.so ] ; then if [ ! -f boost_1_38_0.tar.gz ] ; then wget --tries=10 http://heanet.dl.sourceforge.net/sourceforge/boost/boost_1_38_0.tar.gz fi # tar xzf boost_1_38_0.tar.gz cd boost_1_38_0 GPP_PATH=${OVEROTOP}/tmp/cross/armv7a/arm-angstrom-linux-gnueabi/bin/g++ GPP_VER=`${GPP_PATH} -v 2>&1 | tail -1 | awk '{print $3}'` echo "using gcc : ${GPP_VER} : ${GPP_PATH} ; " > tools/build/v2/user-config.jam sudo apt-get install bjam set +o errexit sudo bjam --toolset=gcc-${GPP_VER} --prefix=/opt/gumros --with-date_time install set -o errexit cd .. else echo "boost appears to be already installed; skipping." fi if [ ! -f /opt/gumros/lib/libboost_date_time-gcc41-mt-1_38.so ] ; then echo "Failed to compile libboost_date_time"; exit; fi I've checked the user-config to make sure everything was kosher as well as making sure the GPP_PATH is correct. However, when I run the scrip I come across compilation errors such as: Reading package lists... Done Building dependency tree Reading state information... Done bjam is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 5 not upgraded. ...patience... ...found 14370 targets... ...updating 14 targets... gcc.compile.c++ bin.v2/libs/date_time/build/gcc-4.3.3/release/threading-multi/gregorian/greg_month.o g++: error trying to exec 'cc1plus': execvp: No such file or directory "/home/andrew/overo-oe/tmp/cross/armv7a/arm-angstrom-linux-gnueabi/bin/g++" -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread -fPIC -DBOOST_ALL_DYN_LINK=1 -DBOOST_ALL_NO_LIB=1 -DDATE_TIME_INLINE -DNDEBUG -I"." -c -o "bin.v2/libs/date_time/build/gcc-4.3.3/release/threading-multi/gregorian/greg_month.o" "libs/date_time/src/gregorian/greg_month.cpp" ...failed gcc.compile.c++ bin.v2/libs/date_time/build/gcc-4.3.3/release/threading-multi/gregorian/greg_month.o... gcc.compile.c++ bin.v2/libs/date_time/build/gcc-4.3.3/release/threading-multi/gregorian/greg_weekday.o g++: error trying to exec 'cc1plus': execvp: No such file or directory "/home/andrew/overo-oe/tmp/cross/armv7a/arm-angstrom-linux-gnueabi/bin/g++" -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread -fPIC -DBOOST_ALL_DYN_LINK=1 -DBOOST_ALL_NO_LIB=1 -DDATE_TIME_INLINE -DNDEBUG -I"." -c -o "bin.v2/libs/date_time/build/gcc-4.3.3/release/threading-multi/gregorian/greg_weekday.o" "libs/date_time/src/gregorian/greg_weekday.cpp" ...failed gcc.compile.c++ bin.v2/libs/date_time/build/gcc-4.3.3/release/threading-multi/gregorian/greg_weekday.o... gcc.compile.c++ bin.v2/libs/date_time/build/gcc-4.3.3/release/threading-multi/gregorian/date_generators.o g++: error trying to exec 'cc1plus': execvp: No such file or directory Etc... For reference, I'm using this tutorial to help me out. http://www.ros.org/wiki/gumros

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Vertical textes inside of table headers with respect of a JavaScript based on SVG library

- by Oleg

I use jqGrid with many columns contains Boolean information, which are displayed as checkboxes inside of table (see http://www.ok-soft-gmbh.com/VerticalHeaders/TestFixedO.htm as an example). To display information more compact I use vertical column headers. It works very well and works in jqGrid in all browsers (see my discussion with Tony Tomov in jqGrid forum http://www.trirand.com/blog/?page_id=393/feature-request/headers-with-vertical-orientation/), but in IE vertical texts looks not nice enough. I was asked from users why the texted displayed so strange. So I think about using a JavaScript based SVG library like SVG Web ( http://code.google.com/p/svgweb/ ) or Raphaël ( http://raphaeljs.com/ ). SVG is very powerful and it is difficult to find a good example is not very easy. I need only display vertical texts (-90 grad, from bottom to up) and use if possible without working in mode of absolute position. So one more times my question: I need have a possibility to display vertical texts (-90 grad rotation) inside of <td> element of table header. I want use a JavaScript based SVG library like SVG Web or Raphaël. The solution must support on IE6. Have somebody a good reference to example which could help me to do this? If somebody post a whole solution of the problem I would be happy. To be exact here is my current solution: I define .rotate { -webkit-transform: rotate(-90deg); /* Safari, Chrome */ -moz-transform: rotate(-90deg); /* Firefox */ -o-transform: rotate(-90deg); /* Opera starting with 10.50 */ /* Internet Explorer: */ filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=3); } define RotateCheckboxColumnHeaders function var RotateCheckboxColumnHeaders = function (grid, headerHeight) { // we use grid as context (if one have more as one table on tnhe page) var trHead = $("thead:first tr", grid.hdiv); var cm = grid.getGridParam("colModel"); $("thead:first tr th").height(headerHeight); headerHeight = $("thead:first tr th").height(); for (var iCol = 0; iCol < cm.length; iCol++) { var cmi = cm[iCol]; if (cmi.formatter === 'checkbox') { // we must set width of column header div BEFOR adding class "rotate" to // prevent text cutting based on the current column width var headDiv = $("th:eq(" + iCol + ") div", trHead); headDiv.width(headerHeight).addClass("rotate"); if (!$.browser.msie) { if ($.browser.mozilla) { headDiv.css("left", (cmi.width - headerHeight) / 2 + 3).css("bottom", 7); } else { headDiv.css("left", (cmi.width - headerHeight) / 2); } } else { var ieVer = jQuery.browser.version.substr(0, 3); // Internet Explorer if (ieVer !== "6.0" && ieVer !== "7.0") { headDiv.css("left", cmi.width / 2 - 4).css("bottom", headerHeight / 2); $("span", headDiv).css("left", 0); } else { headDiv.css("left", 3); } } } } }; And include a call like RotateCheckboxColumnHeaders(grid, 110); after creating jqGrid.

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Problem Registering a Generic Repository with Windsor IoC

- by Robin

I’m fairly new to IoC and perhaps my understanding of generics and inheritance is not strong enough for what I’m trying to do. You might find this to be a mess. I have a generic Repository base class: public class Repository<TEntity> where TEntity : class, IEntity { private Table<TEntity> EntityTable; private string _connectionString; private string _userName; public string UserName { get { return _userName; } set { _userName = value; } } public Repository() {} public Repository(string connectionString) { _connectionString = connectionString; EntityTable = (new DataContext(connectionString)).GetTable<TEntity>(); } public Repository(string connectionString, string userName) { _connectionString = connectionString; _userName = userName; EntityTable = (new DataContext(connectionString)).GetTable<TEntity>(); } // Data access methods ... ... } and a SqlClientRepository that inherits Repository: public class SqlClientRepository : Repository<Client> { private Table<Client> ClientTable; private string _connectionString; private string _userName; public SqlClientRepository() {} public SqlClientRepository(string connectionString) : base(connectionString) { _connectionString = connectionString; ClientTable = (new DataContext(connectionString)).GetTable<Client>(); } public SqlClientRepository(string connectionString, string userName) : base(connectionString, userName) { _connectionString = connectionString; _userName = userName; ClientTable = (new DataContext(connectionString)).GetTable<Client>(); } // data access methods unique to Client repository ... } The Repository class provides some generics methods like Save, Delete, etc, that I want all my repository derived classes to share. The TEntity parameter is constrained to the IEntity interface: public interface IEntity { int Id { get; set; } NameValueCollection GetSaveRuleViolations(); NameValueCollection GetDeleteRuleViolations(); } This allows the Repository class to reference these methods within its Save and Delete methods. Unit tests work fine on mock SqlClientRepository instances as well as live unit tests on the real database. However, in the MVC context: public class ClientController : Controller { private SqlClientRepository _clientRepository; public ClientController(SqlClientRepository clientRepository) { this._clientRepository = clientRepository; } public ClientController() { } // ViewResult methods ... ... } ... _clientRepository is always null. I’m using Windor Castle as an IoC container. Here is the configuration: <component id="ClientRepository" service="DomainModel.Concrete.Repository`1[[DomainModel.Entities.Client, DomainModel]], DomainModel" type="DomainModel.Concrete.SqlClientRepository, DomainModel" lifestyle="PerWebRequest"> <parameters> <connectionString>#{myConnStr}</connectionString> </parameters> </component> I’ve tried many variations in the Windsor configuration file. I suspect it’s more of a design flaw in the above code. As I'm looking over my code, it occurs to me that when registering components with an IoC container, perhaps service must always be an interface. Could this be it? Does anybody have a suggestion? Thanks in advance.

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python/pip error on osx

- by Ibrahim Chawa

I've recently purchased a new hard drive and installed a clean copy of OS X Mavericks. I installed python using homebrew and i need to create a python virtual environment. But when ever i try to run any command using pip, I get this error. I haven't been able to find a solution online for this problem. Any reference would be appreciated. Here is the error I'm getting. ERROR:root:code for hash md5 was not found. Traceback (most recent call last): File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 139, in <module> globals()[__func_name] = __get_hash(__func_name) File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor raise ValueError('unsupported hash type ' + name) ValueError: unsupported hash type md5 ERROR:root:code for hash sha1 was not found. Traceback (most recent call last): File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 139, in <module> globals()[__func_name] = __get_hash(__func_name) File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor raise ValueError('unsupported hash type ' + name) ValueError: unsupported hash type sha1 ERROR:root:code for hash sha224 was not found. Traceback (most recent call last): File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 139, in <module> globals()[__func_name] = __get_hash(__func_name) File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor raise ValueError('unsupported hash type ' + name) ValueError: unsupported hash type sha224 ERROR:root:code for hash sha256 was not found. Traceback (most recent call last): File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 139, in <module> globals()[__func_name] = __get_hash(__func_name) File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor raise ValueError('unsupported hash type ' + name) ValueError: unsupported hash type sha256 ERROR:root:code for hash sha384 was not found. Traceback (most recent call last): File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 139, in <module> globals()[__func_name] = __get_hash(__func_name) File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor raise ValueError('unsupported hash type ' + name) ValueError: unsupported hash type sha384 ERROR:root:code for hash sha512 was not found. Traceback (most recent call last): File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 139, in <module> globals()[__func_name] = __get_hash(__func_name) File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor raise ValueError('unsupported hash type ' + name) ValueError: unsupported hash type sha512 Traceback (most recent call last): File "/usr/local/bin/pip", line 9, in <module> load_entry_point('pip==1.5.6', 'console_scripts', 'pip')() File "build/bdist.macosx-10.9-x86_64/egg/pkg_resources.py", line 356, in load_entry_point File "build/bdist.macosx-10.9-x86_64/egg/pkg_resources.py", line 2439, in load_entry_point File "build/bdist.macosx-10.9-x86_64/egg/pkg_resources.py", line 2155, in load File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/__init__.py", line 10, in <module> from pip.util import get_installed_distributions, get_prog File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/util.py", line 18, in <module> from pip._vendor.distlib import version File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/_vendor/distlib/version.py", line 14, in <module> from .compat import string_types File "/usr/local/Cellar/python/2.7.8/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/_vendor/distlib/compat.py", line 31, in <module> from urllib2 import (Request, urlopen, URLError, HTTPError, ImportError: cannot import name HTTPSHandler If you need any extra information from me let me know, this is my first time posting a question here. Thanks.

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AppDomain dependencies across directories

- by strager

I am creating a plugin system and I am creating one AppDomain per plugin. Each plugin has its own directory with its main assemblies and references. The main assemblies will be loaded by my plugin loader, in addition to my interface assemblies (so the plugin can interact with the application). Creating the AppDomain: this.appDomain = AppDomain.CreateDomain("AppDomain", null, new AppDomainSetup { ApplicationBase = pluginPath, PrivateBinPath = pluginPath, }); Loading the assemblies: this.appDomain.Load(myInterfaceAssembly.GetName(true)); var assemblies = new List<Assembly>(); foreach (var assemblyName in this.assemblyNames) { assemblies.Add(this.appDomain.Load(assemblyName)); } The format of assemblyName is the assembly's filename without ".dll". The problem is that AppDomain.Load(assemblyName) throws an exception: Could not load file or assembly '[[assemblyName]], Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified. All of the dependencies of [[assemblyName]] are: Inside the directory pluginPath, The myInterfaceAssembly which is already loaded, or In the GAC (e.g. mscorelib). Clearly I'm not doing something right. I have tried: Creating an object using this.appDomain.CreateInstanceAndUnwrap inheriting from MarshalByRefObject with a LoadAssembly method to load the assembly. I get an exception saying that the current assembly (containing the proxy class) could not be loaded (file not found, as above), even if I manually call this.appDomain.Load(Assembly.GetExecutingAssembly().GetName(true)). Attaching an AssemblyResolve handler to this.appDomain. I'm met with the same exception as in (1), and manually loading doesn't help. Recursively loading assemblies by loading their dependencies into this.appDomain first. This doesn't work, but I doubt my code is correct: private static void LoadAssemblyInto(AssemblyName assemblyName, AppDomain appDomain) { var assembly = Assembly.Load(assemblyName); foreach (var referenceName in assembly.GetReferencedAssemblies()) { if (!referenceName.FullName.StartsWith("MyProject")) { continue; } var loadedAssemblies = appDomain.GetAssemblies(); if (loadedAssemblies.Any((asm) => asm.FullName == referenceName.FullName)) { continue; } LoadAssemblyInto(referenceName, appDomain); } appDomain.Load(assembly.GetName(true)); } How can I load my plugin assembly with its dependencies in that plugin's directory while also loading some assemblies in the current directory? Note: The assemblies a plugin may (probably will) reference are already loaded in the current domain. This can be shared across domains (performance benefit? simplicity?) if required. Fusion log: *** Assembly Binder Log Entry (12/24/2010 @ 10:46:40 AM) *** The operation failed. Bind result: hr = 0x80070002. The system cannot find the file specified. Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll Running under executable C:\MyProject\bin\Debug\MyProject.vshost.exe --- A detailed error log follows. LOG: Start binding of native image vshost32, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=x86. WRN: No matching native image found. LOG: Bind to native image assembly did not succeed. Use IL image. LOG: IL assembly loaded from C:\MyProject\bin\Debug\MyProject.vshost.exe

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AlerDialog is not created - java.lang.IllegalArgumentException: Activity#onCreateDialog did not crea

- by Jayomat

Hi, I want to create a normal AlertDialog. I used the example provided by the android dev docs. I just changed the DIALOG_PAUSED_ID to DIALOG_DELETEDB. If I execute my code and press the button which in return should create the dialog, I get the following error log: 04-29 01:01:20.973: WARN/dalvikvm(1168): threadid=3: thread exiting with uncaught exception (group=0x4001b188) 04-29 01:01:20.973: ERROR/AndroidRuntime(1168): Uncaught handler: thread main exiting due to uncaught exception 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): java.lang.IllegalArgumentException: Activity#onCreateDialog did not create a dialog for id 4 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at android.app.Activity.createDialog(Activity.java:871) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at android.app.Activity.showDialog(Activity.java:2483) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at mjb.project.AVV.Favs.onMenuItemSelected(Favs.java:111) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:730) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:139) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:855) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at com.android.internal.view.menu.IconMenuView.invokeItem(IconMenuView.java:525) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at com.android.internal.view.menu.IconMenuItemView.performClick(IconMenuItemView.java:122) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at android.view.View.onTouchEvent(View.java:4179) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at android.widget.TextView.onTouchEvent(TextView.java:6540) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at android.view.View.dispatchTouchEvent(View.java:3709) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at android.view.ViewRoot.handleMessage(ViewRoot.java:1691) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at android.os.Handler.dispatchMessage(Handler.java:99) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at android.os.Looper.loop(Looper.java:123) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at android.app.ActivityThread.main(ActivityThread.java:4363) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at java.lang.reflect.Method.invokeNative(Native Method) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at java.lang.reflect.Method.invoke(Method.java:521) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 04-29 01:01:20.993: ERROR/AndroidRuntime(1168): at dalvik.system.NativeStart.main(Native Method) so here are the "relevant" code parts: define the ID: private static final int DELETE_DB_ID = 3; private Dialog dialog; static final int DIALOG_DELETEDB = 4; onCreateDialog(...): protected Dialog onCreateDialog(int id) { switch(id) { case DIALOG_DELETEDB: // do the work to define the pause Dialog AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage("Are you sure you want to exit?") .setCancelable(false) .setPositiveButton("Yes", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { Favs.this.finish(); } }) .setNegativeButton("No", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alert = builder.create(); alert.show(); break; default: dialog = null; } return dialog; } Here I try to "create" the dialog: @Override public boolean onMenuItemSelected(int featureId, MenuItem item) { switch(item.getItemId()) { case ADD_ID: createNote(); return true; case DELETE_DB_ID: showDialog(DIALOG_DELETEDB); return true; } return super.onMenuItemSelected(featureId, item); } As I already said, I just copied the code and changed the name. Unfortunately, I don't understand the error log message.. :/ Somehow I think I don't return the created dialog, but I cannot see "where" my reference is or where/what I have to return... thanks in advance for help.

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codes to convert from avi to asf

- by George2

Hello everyone, No matter what library/SDK to use, I want to convert from avi to asf very quickly (I could even sacrifice some quality of video and audio). I am working on Windows platform (Vista and 2008 Server), better .Net SDK/code, C++ code is also fine. :-) I learned from the below link, that there could be a very quick way to convert from avi to asf to support streaming better, as mentioned "could convert the video from AVI to ASF format using a simple copy (i.e. the content is the same, but container changes).". My question is after some hours of study and trial various SDK/tools, as a newbie, I do not know how to begin with so I am asking for reference sample code to do this task. :-) (as this is a different issue, we decide to start a new topic. :-) ) http://stackoverflow.com/questions/743220/streaming-avi-file-issue thanks in advance, George EDIT 1: I have tried to get the binary of ffmpeg from, http://ffmpeg.arrozcru.org/autobuilds/ffmpeg-latest-mingw32-static.tar.bz2 then run the following command, C:\software\ffmpeg-latest-mingw32-static\bin>ffmpeg.exe -i test.avi -acodec copy -vcodec copy test.asf FFmpeg version SVN-r18506, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration: --enable-memalign-hack --prefix=/mingw --cross-prefix=i686-ming w32- --cc=ccache-i686-mingw32-gcc --target-os=mingw32 --arch=i686 --cpu=i686 --e nable-avisynth --enable-gpl --enable-zlib --enable-bzlib --enable-libgsm --enabl e-libfaac --enable-pthreads --enable-libvorbis --enable-libmp3lame --enable-libo penjpeg --enable-libtheora --enable-libspeex --enable-libxvid --enable-libfaad - -enable-libschroedinger --enable-libx264 libavutil 50. 3. 0 / 50. 3. 0 libavcodec 52.25. 0 / 52.25. 0 libavformat 52.32. 0 / 52.32. 0 libavdevice 52. 2. 0 / 52. 2. 0 libswscale 0. 7. 1 / 0. 7. 1 built on Apr 14 2009 04:04:47, gcc: 4.2.4 Input #0, avi, from 'test.avi': Duration: 00:00:44.86, start: 0.000000, bitrate: 5291 kb/s Stream #0.0: Video: msvideo1, rgb555le, 1280x1024, 5 tbr, 5 tbn, 5 tbc Stream #0.1: Audio: pcm_s16le, 22050 Hz, mono, s16, 352 kb/s Output #0, asf, to 'test.asf': Stream #0.0: Video: CRAM / 0x4D415243, rgb555le, 1280x1024, q=2-31, 1k tbn, 5 tbc Stream #0.1: Audio: pcm_s16le, 22050 Hz, mono, s16, 352 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press [q] to stop encoding frame= 224 fps=222 q=-1.0 Lsize= 29426kB time=44.80 bitrate=5380.7kbits/s video:26910kB audio:1932kB global headers:0kB muxing overhead 2.023317% C:\software\ffmpeg-latest-mingw32-static\bin> http://www.microsoft.com/windows/windowsmedia/player/webhelp/default.aspx?&mpver=11.0.6001.7000&id=C00D11B1&contextid=230&originalid=C00D36E6 then have the following error when using Windows Media Player to play it, does anyone have any ideas? http://www.microsoft.com/windows/windowsmedia/player/webhelp/default.aspx?&mpver=11.0.6001.7000&id=C00D11B1&contextid=230&originalid=C00D36E6

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exception creating a JDBC Conection Pool Glassfish v3

- by jon

Hi all, I am experiencing problems creating a connection pool in glassfish v3, just for reference i am using the Java EE glassfish bundle. my enviroment vars are as follows Url: jdbc:oracle:thin:@localhost:1521:xe User: sys Password : xxxxxxxx which i think is all i need to make a connection. but i get the following exception WARNING: Can not find resource bundle for this logger. class name that failed: com.sun.gjc.common.DataSourceObjectBuilder SEVERE: jdbc.exc_cnfe_ds java.lang.ClassNotFoundException: oracle.jdbc.pool.OracleDataSource at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at com.sun.gjc.common.DataSourceObjectBuilder.getDataSourceObject(DataSourceObjectBuilder.java:279) at com.sun.gjc.common.DataSourceObjectBuilder.constructDataSourceObject(DataSourceObjectBuilder.java:108) at com.sun.gjc.spi.ManagedConnectionFactory.getDataSource(ManagedConnectionFactory.java:1167) at com.sun.gjc.spi.DSManagedConnectionFactory.getDataSource(DSManagedConnectionFactory.java:135) at com.sun.gjc.spi.DSManagedConnectionFactory.createManagedConnection(DSManagedConnectionFactory.java:90) at com.sun.enterprise.connectors.service.ConnectorConnectionPoolAdminServiceImpl.getManagedConnection(ConnectorConnectionPoolAdminServiceImpl.java:520) at com.sun.enterprise.connectors.service.ConnectorConnectionPoolAdminServiceImpl.getUnpooledConnection(ConnectorConnectionPoolAdminServiceImpl.java:630) at com.sun.enterprise.connectors.service.ConnectorConnectionPoolAdminServiceImpl.testConnectionPool(ConnectorConnectionPoolAdminServiceImpl.java:442) at com.sun.enterprise.connectors.ConnectorRuntime.pingConnectionPool(ConnectorRuntime.java:898) at org.glassfish.admin.amx.impl.ext.ConnectorRuntimeAPIProviderImpl.pingJDBCConnectionPool(ConnectorRuntimeAPIProviderImpl.java:570) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.glassfish.admin.amx.impl.mbean.AMXImplBase.invoke(AMXImplBase.java:1038) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761) at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:288) at org.glassfish.admin.amx.util.jmx.MBeanProxyHandler.invoke(MBeanProxyHandler.java:453) at org.glassfish.admin.amx.core.proxy.AMXProxyHandler._invoke(AMXProxyHandler.java:822) at org.glassfish.admin.amx.core.proxy.AMXProxyHandler.invoke(AMXProxyHandler.java:526) at $Proxy233.pingJDBCConnectionPool(Unknown Source) at org.glassfish.admingui.common.handlers.JdbcTempHandler.pingJdbcConnectionPool(JdbcTempHandler.java:99) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.sun.jsftemplating.layout.descriptors.handler.Handler.invoke(Handler.java:442) at com.sun.jsftemplating.layout.descriptors.LayoutElementBase.dispatchHandlers(LayoutElementBase.java:420) at com.sun.jsftemplating.layout.descriptors.LayoutElementBase.dispatchHandlers(LayoutElementBase.java:394) at com.sun.jsftemplating.layout.event.CommandActionListener.invokeCommandHandlers(CommandActionListener.java:150) at com.sun.jsftemplating.layout.event.CommandActionListener.processAction(CommandActionListener.java:98) at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88) at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:772) at javax.faces.component.UICommand.broadcast(UICommand.java:300) at com.sun.webui.jsf.component.WebuiCommand.broadcast(WebuiCommand.java:160) at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:775) at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1267) at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215) at com.sun.webui.jsf.util.UploadFilter.doFilter(UploadFilter.java:240) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:277) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97) at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:332) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:233) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:239) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791) at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693) at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954) at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57) at com.sun.grizzly.ContextTask.run(ContextTask.java:69) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309) at java.lang.Thread.run(Thread.java:619) WARNING: RAR8054: Exception while creating an unpooled [test] connection for pool [ testingManagmentDataConnection ], Class name is wrong or classpath is not set for : oracle.jdbc.pool.OracleDataSource WARNING: Can not find resource bundle for this logger. class name that failed: com.sun.gjc.common.DataSourceObjectBuilder does anyone have any ideas what i am doing wrong/ what i will have to do to correct this issue, Thanks for your time Jon

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Jquery fadeOut looking different in FF than in Chrome/Safari

- by StealthRT

Hey all, i have a page that when a user desides to delete a company, it fades out using the jquery fadeOut() command. This works great and does as it should in FireFox but for some reason it doesn't do the same in Chrome/Safari browsers. The problem is that i have a png image overlay on top of the company logo image that also fades out with the company logo. But if there are more than one company logo on the page, it moves the others in the place where the one got deleted. Like i said, it works fine (and as it should) in Firefox and even IE (SHOCK!) but not in Chrome or Safari. This is the code i use to delete (fade out) the section: $('#moreInfoM' + theNum).fadeOut("slow"); $('#moreInfo' + theNum).fadeOut("slow"); $('#liNum' + theNum).fadeOut("slow"); Where moreInfoM, moreInfo & liNum are all within the code for each logo image. TheNum is just a unique number for each logo just for reference. And the ASP code: For iLoop = LBound(compNames) to UBound(compNames) theWidth = (iwidth / 2) ImgDimension(Server.MapPath("img/company/" & compNames(iLoop) & ".jpg")) theWidth = (iwidth / 2) response.write "<li onClick=""$('#moreInfo" & y & "').slideToggle('slow');"" id=""liNum" & y & """>" & vbcr if theBrowser = "chrome" or theBrowser = "safari" then response.write "<img src=""img/clickMI.png"" width=""97"" height=""33"" style=""position:absolute;width:97px;height:33px;z-index:12;padding-top: 54px; padding-left:" & theWidth & "px;"">" & vbcr else response.write "<img src=""img/clickMI.png"" width=""97"" height=""33"" style=""position:absolute;width:97px;height:33px;z-index:12;padding-top: 50px; padding-left:" & theWidth & "px;"">" & vbcr end if response.write "<img src=""img/company/" & compNames(iLoop) & ".jpg"" height=""60"" style=""border: 1px solid #4C3C1B;padding: 2px;background-color: #CCC; margin-left: 10px; margin-right: 10px; margin-bottom: 5px; margin-top: 5px;"" id=""moreInfoM" & y & """ />" & vbcr response.write "</li>" & vbcr y = y + 1 Next I have made a video of FF and Chrome to give you a better understanding. http://www.youtube.com/watch?v=ZQaRvosvRKE Thanks! David

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Simple Observation in Django: How Can I Correctly Modify The `attrs` sent to new of a Django Mod

- by DGGenuine

Hello, I'm a strong proponent of the observer pattern, and this is what I'd like to be able to do in my Django models.py: class AModel(Model): __metaclass__ = SomethingMagical @post_save(AnotherModel) @classmethod def observe_another_model_saved(klass, sender, instance, created, **kwargs): pass @pre_init('YetAnotherModel') @classmethod def observe_yet_another_model_initializing(klass, sender, *args, **kwargs): pass @post_delete('DifferentApp.SomeModel') @classmethod def observe_some_model_deleted(klass, sender, **kwargs): pass This would connect a signal with sender = the decorator's argument and receiver = the decorated method. Right now my signal connection code all exists in __init__.py which is okay, but a little unmaintainable. I want this code all in one place, the models.py file. Thanks to helpful feedback from the community I'm very close (I think.) (I'm using a metaclass solution instead of the class decorator solution in the previous question/answer because you can't set attributes on classmethods, which I need.) I am having a strange error I don't understand. At the end of my post are the contents of a models.py that you can pop into a fresh project/application to see the error. Set your database to sqlite and add the application to installed apps. This is the error: Validating models... Unhandled exception in thread started by Traceback (most recent call last): File "/Library/Python/2.6/site-packages//lib/python2.6/site-packages/django/core/management/commands/runserver.py", line 48, in inner_run File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 253, in validate raise CommandError("One or more models did not validate:\n%s" % error_text) django.core.management.base.CommandError: One or more models did not validate: local.myothermodel: 'my_model' has a relation with model MyModel, which has either not been installed or is abstract. I've indicated a few different things you can comment in/out to fix the error. First, if you don't modify the attrs sent to the metaclass's __new__, then the error does not arise. (Note even if you copy the dictionary element by element into a new dictionary, it still fails; only using the exact attrs dictionary works.) Second, if you reference the first model by class rather than by string, the error also doesn't arise regardless of what you do in __new__. I appreciate your help. I'll be githubbing the solution if and when it works. Maybe other people would enjoy a simplified way to use Django signals to observe application happenings. #models.py from django.db import models from django.db.models.base import ModelBase from django.db.models import signals import pdb class UnconnectedMethodWrapper(object): sender = None method = None signal = None def __init__(self, signal, sender, method): self.signal = signal self.sender = sender self.method = method def post_save(sender): return _make_decorator(signals.post_save, sender) def _make_decorator(signal, sender): def decorator(view): return UnconnectedMethodWrapper(signal, sender, view) return decorator class ConnectableModel(ModelBase): """ A meta class for any class that will have static or class methods that need to be connected to signals. """ def __new__(cls, name, bases, attrs): unconnecteds = {} ## NO WORK newattrs = {} for name, attr in attrs.iteritems(): if isinstance(attr, UnconnectedMethodWrapper): unconnecteds[name] = attr newattrs[name] = attr.method #replace the UnconnectedMethodWrapper with the method it wrapped. else: newattrs[name] = attr ## NO WORK # newattrs = {} # for name, attr in attrs.iteritems(): # newattrs[name] = attr ## WORKS # newattrs = attrs new = super(ConnectableModel, cls).__new__(cls, name, bases, newattrs) for name, unconnected in unconnecteds.iteritems(): _connect_signal(unconnected.signal, unconnected.sender, getattr(new, name), new._meta.app_label) return new def _connect_signal(signal, sender, receiver, default_app_label): # full implementation also accepts basestring as sender and will look up model accordingly signal.connect(sender=sender, receiver=receiver) class MyModel(models.Model): __metaclass__ = ConnectableModel @post_save('In my application this string matters') @classmethod def observe_it(klass, sender, instance, created, **kwargs): pass @classmethod def normal_class_method(klass): pass class MyOtherModel(models.Model): ## WORKS # my_model = models.ForeignKey(MyModel) ## NO WORK my_model = models.ForeignKey('MyModel')

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Python bindings for a vala library

- by celil

I am trying to create python bindings to a vala library using the following IBM tutorial as a reference. My initial directory has the following two files: test.vala using GLib; namespace Test { public class Test : Object { public int sum(int x, int y) { return x + y; } } } test.override %% headers #include <Python.h> #include "pygobject.h" #include "test.h" %% modulename test %% import gobject.GObject as PyGObject_Type %% ignore-glob *_get_type %% and try to build the python module source test_wrap.c using the following code build.sh #/usr/bin/env bash valac test.vala -CH test.h python /usr/share/pygobject/2.0/codegen/h2def.py test.h > test.defs pygobject-codegen-2.0 -o test.override -p test test.defs > test_wrap.c However, the last command fails with an error $ ./build.sh Traceback (most recent call last): File "/usr/share/pygobject/2.0/codegen/codegen.py", line 1720, in <module> sys.exit(main(sys.argv)) File "/usr/share/pygobject/2.0/codegen/codegen.py", line 1672, in main o = override.Overrides(arg) File "/usr/share/pygobject/2.0/codegen/override.py", line 52, in __init__ self.handle_file(filename) File "/usr/share/pygobject/2.0/codegen/override.py", line 84, in handle_file self.__parse_override(buf, startline, filename) File "/usr/share/pygobject/2.0/codegen/override.py", line 96, in __parse_override command = words[0] IndexError: list index out of range Is this a bug in pygobject, or is something wrong with my setup? What is the best way to call code written in vala from python? EDIT: Removing the extra line fixed the current problem, but now as I proceed to build the python module, I am facing another problem. Adding the following C file to the existing two in the directory: test_module.c #include <Python.h> void test_register_classes (PyObject *d); extern PyMethodDef test_functions[]; DL_EXPORT(void) inittest(void) { PyObject *m, *d; init_pygobject(); m = Py_InitModule("test", test_functions); d = PyModule_GetDict(m); test_register_classes(d); if (PyErr_Occurred ()) { Py_FatalError ("can't initialise module test"); } } and building with the following script build.sh #/usr/bin/env bash valac test.vala -CH test.h python /usr/share/pygobject/2.0/codegen/h2def.py test.h > test.defs pygobject-codegen-2.0 -o test.override -p test test.defs > test_wrap.c CFLAGS="`pkg-config --cflags pygobject-2.0` -I/usr/include/python2.6/ -I." LDFLAGS="`pkg-config --libs pygobject-2.0`" gcc $CFLAGS -fPIC -c test.c gcc $CFLAGS -fPIC -c test_wrap.c gcc $CFLAGS -fPIC -c test_module.c gcc $LDFLAGS -shared test.o test_wrap.o test_module.o -o test.so python -c 'import test; exit()' results in an error: $ ./build.sh ***INFO*** The coverage of global functions is 100.00% (1/1) ***INFO*** The coverage of methods is 100.00% (1/1) ***INFO*** There are no declared virtual proxies. ***INFO*** There are no declared virtual accessors. ***INFO*** There are no declared interface proxies. Traceback (most recent call last): File "<string>", line 1, in <module> ImportError: ./test.so: undefined symbol: init_pygobject Where is the init_pygobject symbol defined? What have I missed linking to?

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Problems with shutting down JBoss in Eclipse if I change JNDI port

- by Balint Pato

1st phase I have a problem shutting down my running JBoss instance under Eclipse since I changed the JNDI port of JBoss. Of course I can shut it down from the console view but not with the stop button (it still searches JNDI port at the default 1099 port). I'm looking forward to any solutions. Thank you! Used environment: JBoss 4.0.2 (using default) Eclipse 3.4.0. (using JBoss Tools 2.1.1.GA) Default ports: 1098, 1099 Changed ports: 11098, 11099 I changed the following part in jbosspath/server/default/conf/jboss-service.xml:    <mbean code="org.jboss.naming.NamingService" name="jboss:service=Naming" xmbean-dd="resource:xmdesc/NamingService-xmbean.xml">  <attribute name="CallByValue">false</attribute>  <attribute name="Port">11099</attribute>  <attribute name="BindAddress">${jboss.bind.address}</attribute>  <attribute name="RmiPort">11098</attribute>  <attribute name="RmiBindAddress">${jboss.bind.address}</attribute>  <depends optional-attribute-name="LookupPool" proxy-type="attribute">jboss.system:service=ThreadPool</depends> </mbean> <mbean code="org.jboss.naming.JNDIView" name="jboss:service=JNDIView" xmbean-dd="resource:xmdesc/JNDIView-xmbean.xml"> </mbean> Eclipse setup: About my JBoss Tools preferences: I had a previous version, I got this problem, I read about some bugfix in JbossTools, so updated to 2.1.1.GA. Now the buttons changed, and I've got a new preferences view, but I cannot modify anything...seems to be abnormal as well: Error dialog: The stacktrace: javax.naming.CommunicationException: Could not obtain connection to any of these urls: localhost:1099 [Root exception is javax.naming.CommunicationException: Failed to connect to server localhost:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection refused: connect]]] at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1385) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:579) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572) at javax.naming.InitialContext.lookup(InitialContext.java:347) at org.jboss.Shutdown.main(Shutdown.java:202) Caused by: javax.naming.CommunicationException: Failed to connect to server localhost:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection refused: connect]] at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:254) at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1370) ... 4 more Caused by: javax.naming.ServiceUnavailableException: Failed to connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection refused: connect] at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:228) ... 5 more Caused by: java.net.ConnectException: Connection refused: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158) at java.net.Socket.connect(Socket.java:452) at java.net.Socket.connect(Socket.java:402) at java.net.Socket.<init>(Socket.java:309) at java.net.Socket.<init>(Socket.java:211) at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:69) at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:62) at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:224) ... 5 more Exception in thread "main" 2nd phase: After creating a new Server in File/new/other/server, it did appear in the preferences tab. Now the stop button is working (the server receives the shutdown messages without any additional modification of the jndi port -- there is no opportunity for it now) but it still throws an error message, though different, it's without exception stack trace: "Server JBoss 4.0 Server failed to stop."

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C++: Declaration of template class member specialization

- by Ziv

When I specialize a (static) member function/constant in a template class, I'm confused as to where the declaration is meant to go. Here's an example of what I what to do - yoinked directly from IBM's reference on template specialization: ===IBM Member Specialization Example=== template<class T> class X { public: static T v; static void f(T); }; template<class T> T X<T>::v = 0; template<class T> void X<T>::f(T arg) { v = arg; } template<> char* X<char*>::v = "Hello"; template<> void X<float>::f(float arg) { v = arg * 2; } int main() { X<char*> a, b; X<float> c; c.f(10); // X<float>::v now set to 20 } The question is, how do I divide this into header/cpp files? The generic implementation is obviously in the header, but what about the specialization? It can't go in the header file, because it's concrete, leading to multiple definition. But if it goes into the .cpp file, is code which calls X::f() aware of the specialization, or might it rely on the generic X::f()? So far I've got the specialization in the .cpp only, with no declaration in the header. I'm not having trouble compiling or even running my code (on gcc, don't remember the version at the moment), and it behaves as expected - recognizing the specialization. But A) I'm not sure this is correct, and I'd like to know what is, and B) my Doxygen documentation comes out wonky and very misleading (more on that in a moment a later question). What seems most natural to me would be something like this, declaring the specialization in the header and defining it in the .cpp: ===XClass.hpp=== #ifndef XCLASS_HPP #define XCLASS_HPP template<class T> class X { public: static T v; static void f(T); }; template<class T> T X<T>::v = 0; template<class T> void X<T>::f(T arg) { v = arg; } /* declaration of specialized functions */ template<> char* X<char*>::v; template<> void X<float>::f(float arg); #endif ===XClass.cpp=== #include <XClass.hpp> /* concrete implementation of specialized functions */ template<> char* X<char*>::v = "Hello"; template<> void X<float>::f(float arg) { v = arg * 2; } ...but I have no idea if this is correct. Any ideas? Thanks much, Ziv

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How to solve a deallocated connection in iPhone SDK 3.1.3? - Streams - CFSockets

- by Christian

Hi everyone, Debugging my implementation I found a memory leak issue. I know where is the issue, I tried to solve it but sadly without success. I will try to explain you, maybe someone of you can help with this. First I have two classes involved in the issue, the publish class (where publishing the service and socket configuration is done) and the connection (where the socket binding and the streams configuration is done). The main issue is in the connection via native socket. In the 'publish' class the "server" accepts a connection with a callback. The callback has the native-socket information. Then, a connection with native-socket information is created. Next, the socket binding and the streams configuration is done. When those actions are successful the instance of the connection is saved in a mutable array. Thus, the connection is established. static void AcceptCallback(CFSocketRef socket, CFSocketCallBackType type, CFDataRef address, const void *data, void *info) { Publish *rePoint = (Publish *)info; if ( type != kCFSocketAcceptCallBack) { return; } CFSocketNativeHandle nativeSocketHandle = *((CFSocketNativeHandle *)data); NSLog(@"The AcceptCallback was called, a connection request arrived to the server"); [rePoint handleNewNativeSocket:nativeSocketHandle]; } - (void)handleNewNativeSocket:(CFSocketNativeHandle)nativeSocketHandle{ Connection *connection = [[[Connection alloc] initWithNativeSocketHandle:nativeSocketHandle] autorelease]; // Create the connection if (connection == nil) { close(nativeSocketHandle); return; } NSLog(@"The connection from the server was created now try to connect"); if ( ! [connection connect]) { [connection close]; return; } [clients addObject:connection]; //save the connection trying to avoid the deallocation } The next step is receive the information from the client, thus a read-stream callback is triggered with the information of the established connection. But when the callback-handler tries to use this connection the error occurs, it says that such connection is deallocated. The issue here is that I don't know where/when the connection is deallocated and how to know it. I am using the debugger, but after some trials, I don't see more info. void myReadStreamCallBack (CFReadStreamRef stream, CFStreamEventType eventType, void *info) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; Connection *handlerEv = [[(Connection *)info retain] autorelease]; // The error -[Connection retain]: message sent to deallocated instance 0x1f5ef0 (Where 0x1f5ef0 is the reference to the established connection) [handlerEv readStreamHandleEvent:stream andEvent:eventType]; [pool drain]; } void myWriteStreamCallBack (CFWriteStreamRef stream, CFStreamEventType eventType, void *info){ NSAutoreleasePool *p = [[NSAutoreleasePool alloc] init]; Connection *handlerEv = [[(Connection *)info retain] autorelease]; //Sometimes the error also happens here, I tried without the pool, but it doesn't help neither. [handlerEv writeStreamHandleEvent:eventType]; [p drain]; } Something strange is that when I run the debugger(with breakpoints) everything goes well, the connection is not deallocated and the callbacks work fine and the server is able to receive the message. I will appreciate any hint!

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Issue with Silverlight interop with JBoss WebService

- by Hadi Eskandari

I have a simple JAXWS webservice deployed in JBoss. It runs fine with a java client but I'm trying to connect using a Silverlight 3.0 application. I've changed the webservice to use Soap 1.1: @BindingType(value = "http://schemas.xmlsoap.org/wsdl/soap/http") public class UserSessionBean implements UserSessionRemote { ... } I'm using BasicHttpBinding on the Silverlight client. There are two issues: 1- When I connect from VisualStudio (2008 and 2010) to create the webservice proxies, the following exception is thrown, but the proxy is generated successfully. This also happens when I try to update the existing web service reference (but it also updates fine). com.sun.xml.ws.server.UnsupportedMediaException: Unsupported Content-Type: application/soap+xml; charset=utf-8 Supported ones are: [text/xml] at com.sun.xml.ws.encoding.StreamSOAPCodec.decode(StreamSOAPCodec.java:291) at com.sun.xml.ws.encoding.StreamSOAPCodec.decode(StreamSOAPCodec.java:128) at com.sun.xml.ws.encoding.SOAPBindingCodec.decode(SOAPBindingCodec.java:287) at com.sun.xml.ws.transport.http.HttpAdapter.decodePacket(HttpAdapter.java:276) at com.sun.xml.ws.transport.http.HttpAdapter.access$500(HttpAdapter.java:93) at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:432) at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:244) at com.sun.xml.ws.transport.http.servlet.ServletAdapter.handle(ServletAdapter.java:135) at org.jboss.wsf.stack.metro.RequestHandlerImpl.doPost(RequestHandlerImpl.java:225) at org.jboss.wsf.stack.metro.RequestHandlerImpl.handleHttpRequest(RequestHandlerImpl.java:82) at org.jboss.wsf.common.servlet.AbstractEndpointServlet.service(AbstractEndpointServlet.java:85) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446) at java.lang.Thread.run(Thread.java:619) 2- When I use the proxy to fetch some data from the webservice (even methods with primitive types), I get the following error on Silverlight client: "An error occurred while trying to make a request to URI 'http://localhost:9090/admintool/UserSessionEJB'. This could be due to attempting to access a service in a cross-domain way without a proper cross-domain policy in place, or a policy that is unsuitable for SOAP services. You may need to contact the owner of the service to publish a cross-domain policy file and to ensure it allows SOAP-related HTTP headers to be sent. This error may also be caused by using internal types in the web service proxy without using the InternalsVisibleToAttribute attribute. Please see the inner exception for more details." Setting a breakpoint on my java code, I can see that it is not hit when I run the silverlight client, so it is probably a cross domain issue, but I'm not sure how to handle it (I've already created a crossdomain.xml file and put it beside my HTML page hosting the silverlight client). I appreciate any help!

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Problem Implementing StructureMap in VB.Net Conversion of SharpArchitecture

- by Monkeeman69

I work in a VB.Net environment and have recently been tasked with creating an MVC enviroment to use as a base to work from. I decided to convert the latest SharpArchitecture release (Q3 2009) into VB, which on the whole has gone fine after a bit of hair pulling. I came across a problem with Castle Windsor where my custom repository interface (lives in the core/domain project) that was reference in the constructor of my test controller was not getting injected with the concrete implementation (from the data project). I hit a brick wall with this so basically decided to switch out Castle Windsor for StructureMap. I think I have implemented this ok as everything compiles and runs and my controller ran ok when referencing a custom repository interface. It appears now that I have/or cannot now setup my generic interfaces up properly (I hope this makes sense so far as I am new to all this). When I use IRepository(Of T) (wanting it to be injected with a concrete implementation of Repository(Of Type)) in the controller constructor I am getting the following runtime error: "StructureMap Exception Code: 202 No Default Instance defined for PluginFamily SharpArch.Core.PersistenceSupport.IRepository`1[[DebtRemedy.Core.Page, DebtRemedy.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], SharpArch.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b5f559ae0ac4e006" Here are my code excerpts that I am using (my project is called DebtRemedy). My structuremap registry class Public Class DefaultRegistry Inherits Registry Public Sub New() ''//Generic Repositories AddGenericRepositories() ''//Custom Repositories AddCustomRepositories() ''//Application Services AddApplicationServices() ''//Validator [For](GetType(IValidator)).Use(GetType(Validator)) End Sub Private Sub AddGenericRepositories() ''//ForRequestedType(GetType(IRepository(Of ))).TheDefaultIsConcreteType(GetType(Repository(Of ))) [For](GetType(IEntityDuplicateChecker)).Use(GetType(EntityDuplicateChecker)) [For](GetType(IRepository(Of ))).Use(GetType(Repository(Of ))) [For](GetType(INHibernateRepository(Of ))).Use(GetType(NHibernateRepository(Of ))) [For](GetType(IRepositoryWithTypedId(Of ,))).Use(GetType(RepositoryWithTypedId(Of ,))) [For](GetType(INHibernateRepositoryWithTypedId(Of ,))).Use(GetType(NHibernateRepositoryWithTypedId(Of ,))) End Sub Private Sub AddCustomRepositories() Scan(AddressOf SetupCustomRepositories) End Sub Private Shared Sub SetupCustomRepositories(ByVal y As IAssemblyScanner) y.Assembly("DebtRemedy.Core") y.Assembly("DebtRemedy.Data") y.WithDefaultConventions() End Sub Private Sub AddApplicationServices() Scan(AddressOf SetupApplicationServices) End Sub Private Shared Sub SetupApplicationServices(ByVal y As IAssemblyScanner) y.Assembly("DebtRemedy.ApplicationServices") y.With(New FirstInterfaceConvention) End Sub End Class Public Class FirstInterfaceConvention Implements ITypeScanner Public Sub Process(ByVal type As Type, ByVal graph As PluginGraph) Implements ITypeScanner.Process If Not IsConcrete(type) Then Exit Sub End If ''//only works on concrete types Dim firstinterface = type.GetInterfaces().FirstOrDefault() ''//grabs first interface If firstinterface IsNot Nothing Then graph.AddType(firstinterface, type) Else ''//registers type ''//adds concrete types with no interfaces graph.AddType(type) End If End Sub End Class I have tried both ForRequestedType (which I think is now deprecated) and For. IRepository(Of T) lives in SharpArch.Core.PersistenceSupport. Repository(Of T) lives in SharpArch.Data.NHibernate. My servicelocator class Public Class StructureMapServiceLocator Inherits ServiceLocatorImplBase Private container As IContainer Public Sub New(ByVal container As IContainer) Me.container = container End Sub Protected Overloads Overrides Function DoGetInstance(ByVal serviceType As Type, ByVal key As String) As Object Return If(String.IsNullOrEmpty(key), container.GetInstance(serviceType), container.GetInstance(serviceType, key)) End Function Protected Overloads Overrides Function DoGetAllInstances(ByVal serviceType As Type) As IEnumerable(Of Object) Dim objList As New List(Of Object) For Each obj As Object In container.GetAllInstances(serviceType) objList.Add(obj) Next Return objList End Function End Class My controllerfactory class Public Class ServiceLocatorControllerFactory Inherits DefaultControllerFactory Protected Overloads Overrides Function GetControllerInstance(ByVal requestContext As RequestContext, ByVal controllerType As Type) As IController If controllerType Is Nothing Then Return Nothing End If Try Return TryCast(ObjectFactory.GetInstance(controllerType), Controller) Catch generatedExceptionName As StructureMapException System.Diagnostics.Debug.WriteLine(ObjectFactory.WhatDoIHave()) Throw End Try End Function End Class The initialise stuff in my gloabal.asax Dim container As IContainer = New Container(New DefaultRegistry) ControllerBuilder.Current.SetControllerFactory(New ServiceLocatorControllerFactory()) ServiceLocator.SetLocatorProvider(Function() New StructureMapServiceLocator(container)) My test controller Public Class DataCaptureController Inherits BaseController Private ReadOnly clientRepository As IClientRepository() Private ReadOnly pageRepository As IRepository(Of Page) Public Sub New(ByVal clientRepository As IClientRepository(), ByVal pageRepository As IRepository(Of Page)) Check.Require(clientRepository IsNot Nothing, "clientRepository may not be null") Check.Require(pageRepository IsNot Nothing, "pageRepository may not be null") Me.clientRepository = clientRepository Me.pageRepository = pageRepository End Sub Function Index() As ActionResult Return View() End Function The above works fine when I take out everything to do with the pageRepository which is IRepository(Of T). Any help with this would be greatly appreciated.

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