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  • LoaderLock was detected, and turning off the warning does not help

    - by Scott M.
    I am trying to write an application that takes in sound from the default audio recording device on a computer. When running any code that accesses DirectX from my managed code i get this error: DLL 'C:\Windows\assembly\GAC\Microsoft.DirectX.DirectSound\1.0.2902.0__31bf3856ad364e35\Microsoft.DirectX.DirectSound.dll' is attempting managed execution inside OS Loader lock. Do not attempt to run managed code inside a DllMain or image initialization function since doing so can cause the application to hang. DevicesCollection coll = new DevicesCollection(); and Device d = new Device(DSoundHelper.DefaultCaptureDevice); and Capture c = new Capture(DSoundHelper.DefaultCaptureDevice); all cause the LoaderLock MDA to pop up and tell me there is a problem. I have scoured the internet (stackoverflow included) for solutions to this problem, but most people just say to turn off the warning, which does not work. When I turn off the warning, a generic ApplicationException is thrown, which is even less useful. I have seen the answers to this question as well, which didn't help because he said to remove the code that is causing the error. Others have said "fix your code." My questions are: how can I call any (preferably managed) DirectX code from C# without getting this error?

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  • Multi tenant membership provider ASP.NET MVC

    - by Masna
    Hello, I'm building a multi-tenant app with ASP.NET MVC and have a problem with validating users. Situation I have: -a table with User(ID, Name, FirstName, Email) This table is made, so that a users who is registered in two tenants doesn't need to login again. -a table with Tentantuser(ID, TenantID, UserID (FK to table User), UserName, Loginname, Password, Active) This table contains de login en password for one tenant. Example: UserX is registered in TenantA and TenantB UserX logs in on TenantA, with his login and password for TenantA System verifies or login and password are correct in the table TenantUser System validates UserX which userID corresponds to the Id in the table User UserX goes to TenantB and is automatically logged in My problem: How can I create a custom Provider so I can check the login & password in a tenant? For example: public abstract bool ValidateUser(string username,string password); How can I say to my provider on which tenant the user is? How can I change this in something like: public overrides bool ValidateUser(string username,string password, string tenant); ? Or what is another way to solve this issue?

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  • apache htaccess rewrite rules make redirection loop

    - by Ali
    Hi guys, Have a very strange problem with Apache .htaccess URL Rewriting and Redirection. Here's my setup: I have a zend application with a single point of entry (index.php) directly under my apache document root (call this the "public" folder). I also have all other public files (images, js, css, etc.) under the public folder. Here, I also have a wordpress blog under the "blog" folder. There's an empty test folder too The Problem When I go to mydomain.com/blog, I get redirected to http://www.theredpin.com/blog (correctly), then to http://www.theredpin.com/blog/ (just with an extra / at end), finally to http://theredpin.com/blog/ -- and we're back where we started. The loop continues. What I don't understand is why would wordpress try to remove the www? I'm guessing it's wordpress because my empty test folder acts just fine! PLEASE HELP. I"M REALLY DESPERATE :( Thank you very much Other things that happen: When I go to mydomain.com, i correctly get redirected to www.mydomain.com When I go to www.mydomain.com, i correctly stay where I am When I go to www.mydomain.com/test or mydomain.com/test, behaviour is correct. Setup So my .htaccess file does the following: If there's no www., then add it and do a 301 redirect. Here's the code I use RewriteCond %{HTTP_HOST} ^mydomain.com [NC] RewriteRule ^(.*)$ http://www.mydomain.com/$1 [L,R=301] If the request is NOT for a resource (image, etc.), or the blog, then load zend application by rewriting to index.php RewriteRule !((^blog(/)?.*$)|(.(js|ico|gif|jpg|jpeg|png|css|cur|JPG|html|txt))$) index.php Thanks again for all your help!!! Ali

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  • Using Word COM objects in .NET, WinWord process won't quit after calling Word.Documents.Add

    - by Keith
    I'm running into the classic scenario where, when creating Word COM objects in .NET (via the Microsoft.Office.Interop.Word assembly), the WinWord process won't exit even though I'm properly closing and releasing the objects. I've narrowed it down to the use of the Word.Documents.Add() method. I can work with Word in other ways without a problem (opening documents, modifying contents, etc) and WinWord.exe quits when I tell it to. It's once I use the Add() method that the process is left running. Here is a simple example which reproduces the problem: Dim oWord As New Word.Application() oWord.Visible = False Dim oDocuments As Word.Documents = oWord.Documents Dim oDoc As Word.Document = oDocuments.Add(Template:=CObj(sTemplatePath), NewTemplate:=False, DocumentType:=Word.WdNewDocumentType.wdNewBlankDocument, Visible:=False) ' dispose objects oDoc.Close() While (Marshal.ReleaseComObject(oDoc) < 0) End While oDoc = Nothing oWord.Quit() While (Marshal.ReleaseComObject(oWord) < 0) End While oWord = Nothing As you can see I'm creating and disposing the objects properly, even taking the extra step to loop Marsha.ReleaseComObject until it returns the proper code. Working with the Word objects is fine in other regards, it's just that pesky Documents.Add that is causing me grief. Is there another object that gets created in this process that I need to reference and dispose of? Is there another disposal step I need to follow? Something else? Your help is much appreciated :)

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  • Entity Framework with MySQL - Timeout Expired while Generating Model

    - by Nathan Taylor
    I've constructed a database in MySQL and I am attempting to map it out with Entity Framework, but I start running into "GenerateSSDLException"s whenever I try to add more than about 20 tables to the EF context. An exception of type 'Microsoft.Data.Entity.Design.VisualStudio.ModelWizard.Engine.ModelBuilderEngine+GenerateSSDLException' occurred while attempting to update from the database. The exception message is: 'An error occurred while executing the command definition. See the inner exception for details.' Fatal error encountered during command execution. Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. There's nothing special about the affected tables, and it's never the same table(s), it's just that after a certain (unspecific) number of tables have been added, the context can no longer be updated without the "Timeout expired" error. Sometimes it's only one table left over, and sometimes it's three; results are pretty unpredictable. Furthermore, the variance in the number of tables which can be added before the error indicates to me that perhaps the problem lies in the size of the query being generated to update the context which includes both the existing table definitions, and also the new tables that are being added to it. Essentially, the SQL query is getting too large and it's failing to execute for some reason. If I generate the model with EdmGen2 it works without any errors, but the generated EDMX file cannot be updated within Visual Studio without producing the aforementioned exception. In all likelihood the source of this problem lies in the tool within Visual Studio given that EdmGen2 works fine, but I'm hoping that perhaps others could offer some advice on how to approach this very unique issue, because it seems like I'm not the only person experiencing it. One suggestion a colleague offered was maintaining two separate EBMX files with some table crossover, but that seems like a pretty ugly fix in my opinion. I suppose this is what I get for trying to use "new technology". :(

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  • fPDF: how to strikeout/strikethrough justified text in multicell?

    - by SWilk
    Hi, I am generating a PDF with fPDF. I need to strikethrough a long text inside a MultiCell. The text is justified to left and right, which probably is the source of the problem. Here is my code: //get the starting x and y of the cell to strikeout $strikeout_y_start = $pdf->GetY(); $strikeout_x = $pdf->getX(); $strikeText = "Some text with no New Lines (\n), which is wrapped automaticly, cause it is very very very very very very very very very very long long long long long long long long long long long long long long long long long long" //draw the text $pdf->MultiCell(180, 4, $strikeText); //get the y end of cell $strikeout_y_end = $pdf->GetY(); $strikeout_y = $strikeout_y_start+2; $strikeCount = 0; for ($strikeout_y; $strikeout_y < $strikeout_y_end - 4; $strikeout_y+=4) { $strikeCount++; //strike out the full width of all lines but last one - works OK $pdf->Line($strikeout_x, $strikeout_y, $strikeout_x + 180, $strikeout_y); } //this works, but gives incorrect results $width = $pdf->GetStringWidth($strikeText); $width = $width - $strikeCount*180; //the line below will strike out some text, but not all the letters of last line $pdf->line($strikeout_x, $strikeout_y, $strikeout_x+$width, $strikeout_y); The problem is that as the text in multicell is justified (and have to be), the spacec in previous lines are wider than the GetStringWidth assumes, so GetStringWidth underestimates the full width of this text. As a result, the last line is stroked out in, say, 70%, and some letters on the end of it are not stroked out. Any ideas how to calculate the width of last line in multicell?

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  • Selenium RC selenium-testrunner.js Access denied error on IEProxy - Help??

    - by melaos
    Webpage error details User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET4.0C; .NET4.0E) Timestamp: Wed, 28 Apr 2010 02:07:17 UTC Message: Access is denied. Line: 177 Char: 9 Code: 0 URI: http://www.google.com/selenium-server/core/scripts/selenium-testrunner.js Hi guys, i'm just starting to learn up on selenium and while testing using mostly test cases and test suite creating using selenium IDE firefox, i'm having some problem getting it to work properly in internet explorer. this is the cmd line that i'm using: java -jar "selenium-server.jar" -htmlSuite *iexploreproxy "http://www.google.com/" tests/OR_Discount_UAT_Suite.htm results.html -userExtensions user-extensions.js i try using the *iexplore but kept getting session id expired error and try with the proxy version instead. i can now see the testrunner but keep getting the access denied error. i then try the same cmd line using firefox: java -jar "selenium-server.jar" -htmlSuite *firefox3 "http://www.google.com/" tests/OR_Discount_UAT_Suite.htm results.html -userExtensions user-extensions.js FYI, i've already unchecked the auto detect proxy setting in IE8. and i can get everything running perfectly. so im not sure what's the problem right now :( anybody can help? thanks!

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  • Visual Studio 2010 is asking to convert RDLC created on VS2008 to RDLC 2008 format?

    - by Junior Mayhé
    I've created my project on Visual Studio 2008, as well RDLC files on it. But now, when I open the solution on Visual Studio 2010 and want to open RDLC file, it's showing me a warning. That's a little funny. The report was created on VS2008 and VS2010 is asking to convert to 2008 format. Perhaps there was a problem on my VS2008 installation that created RDLC files using some ancient format (2005??!) The problem is, when you confirm with Ok button, do some design ajustments and run the app, it throws an error on 'Main report': ex.InnerException {"The definition of the report 'Main Report' is invalid."} [Microsoft.Reporting.DefinitionInvalidException]: {"The definition of the report 'Main Report' is invalid."} Data: {System.Collections.ListDictionaryInternal} HelpLink: null InnerException: {"The report definition is not valid. Details: The report definition has an invalid target namespace 'http://schemas.microsoft.com/sqlserver/reporting/2008/01/reportdefinition' which cannot be upgraded."} Message: "The definition of the report 'Main Report' is invalid." Source: "Microsoft.ReportViewer.Common" StackTrace: " at Microsoft.Reporting.ReportCompiler.CompileReport(CatalogItemContext context, Byte[] reportDefinition, Boolean generateExpressionHostWithRefusedPermissions, ReportSnapshotBase& snapshot)\r\n at Microsoft.Reporting.StandalonePreviewStore.StoredReport.CompileReport()\r\n at Microsoft.Reporting.StandalonePreviewStore.StoredReport.get_Snapshot()\r\n at Microsoft.Reporting.StandalonePreviewStore.GetCompiledReport(CatalogItemContext context, Boolean rebuild, ReportSnapshotBase& snapshot)\r\n at Microsoft.Reporting.LocalService.GetCompiledReport(CatalogItemContext itemContext, Boolean rebuild, ReportSnapshotBase& snapshot)\r\n at Microsoft.Reporting.LocalService.CompileReport(CatalogItemContext itemContext, Boolean rebuild)\r\n at Microsoft.Reporting.WinForms.LocalReport.CompileReport()" TargetSite: {Microsoft.ReportingServices.ReportProcessing.PublishingResult CompileReport(Microsoft.ReportingServices.Diagnostics.CatalogItemContext, Byte[], Boolean, Microsoft.ReportingServices.Library.ReportSnapshotBase ByRef)}

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  • TFS Build errors TF224003, TF215085, TF215076

    - by iamdudley
    Hi, I am using TFS2008 and VS2008. I run nightly builds for about 20 applications using one build agent and the builds are scheduled for either 1am or 2am. Most of the build succeed, however 6 of them fail regularly with similar errors. The errors are either the first two below, or the third one by itself: TF215085: An error occurred while connecting to agent \xxxx\BUILDMACHINE: TF215076: Team Foundation Build on computer BUILDMACHINE (port 9191) is not responding. (Detail Message: The request was aborted: The operation has timed out.) 11/04/2010 2:10:10 AM TF224003: An exception occurred on the build computer BUILDMACHINE: The build (vstfs:///Build/Build/2632) has already completed and cannot be started again.. TF215085: An error occurred while connecting to agent \yyyyy\BA_WKSTFSBUILD: Team Foundation services are not available from server srvtfs. Technical information (for administrator): The operation has timed out It looks to me like some kind of communication error, maybe the port gets over loaded - can this happen? Should I spread the builds out a bit more? In the build definition it says "Queue the build on the default build agent at", so I figured if I scheduled them to start at the same time they would be queued and occur sequentially. Most of the suggestions I've found online for these errors are for all or nothing scenarios where no builds work at all whereas my problem is most build but some consistently do not. Judging by the dates of the last successful builds of these 6 failing builds I believe it is the same 6 failing every night. (I'm editing the build definitions now to keep the failed builds so I can get some more info on the problem) Any help on this would be much appreciated. James.

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  • Logging into StackOverflow.com and Meta.StackOverflow.com

    - by Tahir Hassan
    I have recently created a myopenid to log into stack overflow. This login works on stackoverflow.com but NOT on meta.stackoverflow.com. Why is this? This seems like it is a problem on (meta)stackoverflow's side rather than myopenid's side. When I attempt to login to meta.stackoverflow.com using myopenid login, I end up being redirected to a blank page with a very long query string. The url of the blank page is http://www.myopenid.com/server?... Secondly, my google login does not work. When I attempt to login to stackoverflow.com using my google login I end up seeing a blank page with a url beginning with http://stackoverflow.com/users/authenticate/?s... I am using Firefox 3.6.3 and I can successfully login to stackoverflow.com using myopenid but NOT with myopenid onto meta.stackoverflow.com and NOT with google onto stackoverflow.com. Please note that I would prefer to use my google login to login to stackoverflow. I only created myopenid account to get to the root of the problem. Stackoverflow should seriously consider giving users the option of having stackoverflow specific credentials because for me and I am sure countless others this openid thing don't work. (I know this should be posted in meta.stackoverflow.com but this requires a working openid, which I do not have).

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  • Mixed surrogate composite key insert in JPA 2.0, PostgreSQL and Hibernate 3.5

    - by Gerald
    First off, we are using JPA 2.0 and Hibernate 3.5 as persistence provider on a PostgreSQL database. We successfully use the sequence of the database via the JPA 2.0 annotations as an auto-generated value for single-field-surrogate-keys and all works fine. Now we are implementing a bi-temporal database-scheme that requires a mixed key in the following manner: Table 1: id (pk, integer, auto-generated-sequence) validTimeBegin (pk, dateTime) validTimeEnd (dateTime) firstName (varChar) Now we have a problem. You see, if we INSERT a new element, the field id is auto-generated and that's fine. Only, if we want to UPDATE the field within this scheme, then we have to change the validTimeBegin column WITHOUT changing the id-field and insert it as a new row like so: BEFORE THE UPDATE OF THE ROW: |---|-------------------------|-------------------------|-------------------| | id| validTimeBegin | validTimeEnd | firstName | |---|-------------------------|-------------------------|-------------------| | 1| 2010-05-01-10:00:00.000 | NULL | Gerald | |---|-------------------------|-------------------------|-------------------| AFTER THE UPDATE OF THE ROW happening at exactly 2010-05-01-10:35:01.788 server-time: (we update the person with the id:1 to reflect his new first name...) |---|-------------------------|-------------------------|-------------------| | id| validTimeBegin | validTimeEnd | firstName | |---|-------------------------|-------------------------|-------------------| | 1| 2010-05-01-10:00:00.000 | 2010-05-01-10:35:01.788 | Gerald | |---|-------------------------|-------------------------|-------------------| | 1| 2010-05-01-10:35:01.788 | NULL | Jerry | |---|-------------------------|-------------------------|-------------------| So our problem is, that this doesn't work at all using an auto-generated-sequence for the field id because when inserting a new row then the id ALWAYS is auto-generated although it really is part of a composite key which should sometimes behave differently. So my question is: Is there a way to tell hibernate via JPA to stop auto-generating the id-field in the case I want to generate a new variety of the same person and go on as usual in every other case or do I have to take over the whole id-generation with custom code? Thanks in advance, Gerald

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  • Testing movie with Flash IDE fails to load file from localhost

    - by davgothic
    Hi, I'm just wondering if anybody can help me with my simple but frustrating problem. I have created an SWF that loads an XML file from http://localhost/flash/Projects/MEL/Quiz/Quiz/bin/xml/quiz.xml, but I get this error when running the movie using Test Movie in the Flash IDE. Error #2044: Unhandled ioError:. text=Error #2032: Stream Error. URL: http://localhost/flash/Projects/MEL/Quiz/Quiz/bin/xml/quiz.xml at Main/loadConfig()[D:\www\webroot\flash\Projects\MEL\Quiz\Quiz\src\Main.as:126] at Main/configLoadError()[D:\www\webroot\flash\Projects\MEL\Quiz\Quiz\src\Main.as:143] at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at flash.net::URLLoader/onComplete() The error I get if I handle the exception is: [IOErrorEvent type="ioError" bubbles=false cancelable=false eventPhase=2 text="Error #2032: Stream Error. URL: http://localhost/flash/Projects/MEL/Quiz/Quiz/bin/xml/quiz.xml"] Trouble is running the SWF in a browser locally does work, it only throws these errors in the Flash IDE. I have tried a adding wildcard crossdomain.xml file in my root web directory and setting the SWF publish properties for local playback security to Allow network only, but neither of these have solved my problem. I know Windows 7 handles localhost name resolution differently compared to previous versions of Windows but I have even added 127.0.0.1 localhost to my hosts file to no avail. Can anyone shed any light on this issue?

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  • How to remove FacesMessages from the FacesContext?

    - by gurupriyan.e
    In my screen, I have a drop down(select box), on selection of any of the options in that drop down , i display one or more text boxes beside the select box using javascript/css - display:none and display:block. All these input controls are in the same jsf form. Each of the input controls have their own validator. The problem is suppose the user selects from selection box and doesn't input value or inputs a wrong value for , i add a custom FacesMessage in the Validator and is shown appropriately and suppose the user selects the the second time and inputs the wrong value for the then another FacesMessage is added in the validator. But Now both the Messages are shown - means - the message for and - which is wrong My assumption is that , this happens because they exist in the same form and their instances are not destroyed yet in the FacesContext and in the UIView. I decided to delete the messages this way Iterator<FacesMessage> msgIterator = FacesContext.getCurrentInstance().getMessages(); while(msgIterator.hasNext()) { msgIterator.next(); msgIterator.remove(); } But this sometimes gives java.util.NoSuchElementException org.apache.myfaces.shared_impl.renderkit.html.HtmlMessagesRendererBase$MessagesIterator.next So 2 questions : 1) What is the problem in deleting the FacesMessages this way? I am using myfaces-api-1.2.3.jar and myfaces-impl-1.2.3.jar 2) Is there a better approach to handle my scenario? I only want to show relevent messages every time a jsf request is processed Thanks

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  • WCF listenBacklog and maxConnections can't be set higher than 10. Why not?

    - by NeedWCFPro
    My service works great under low load. But under high load I start to get connection errors. I know about other settings but I am trying to change the listenBacklog parameter in particular for my TCP Buffered binding. If I set listenBacklog="10" I am able to telnet into the port where my WCF service is running. If I change listenBacklog to anything higher than 10 it will not let me telnet into my service when it is running. No errors seem to be thrown. What can I do? I get the same problem when I change my maxConnections away from 10. All other properties of the binding I can set higher without a problem. Here is what my binding looks like: <bindings> <netTcpBinding> <binding name="NetTcpBinding_IMyService" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" transactionFlow="false" transferMode="Buffered" transactionProtocol="OleTransactions" hostNameComparisonMode="StrongWildcard" listenBacklog="10" maxBufferPoolSize="524288" maxBufferSize="1048576" maxConnections="10" maxReceivedMessageSize="1048576"> <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" /> <reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false" /> <security mode="Transport"> <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign"> </transport> <message clientCredentialType="Windows" /> </security> </binding> ... I really need to increase the values of maxConnections and listenBacklog

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  • Rendering a UIWebView in drawRect with loadHTMLString

    - by Nick Weaver
    Hello there, I am having a problem with UIWebView. I'd like to render my own html code in it. When I add a webview as a subview and put in some html code it renders just fine. When it gets down to some optimized drawing of tableview cell with the drawRect method the problem pops up. Drawing UIView descendants works pretty well this way. It's even possible to load a URL with the loadRequest method, setting the delegate, conforming to the UIWebViewDelegate protocol and redrawing the table cell with setNeedsDisplay when webViewDidFinishLoad is called. It does show, but when it comes to loadHTMLString, nothing shows up, only a white rect. Due to performance reasons I have to do the drawing in the drawRect method. Any ideas? Thanks in advance Nick Example snippet code for the html code being loaded by a UIWebView: NSString *html = @"<html><head><title>My fancy webview</title></head><body style='background-color:green;'><p>It somehow seems<h2 style='color:black;'>this does not show up in drawRect</h2>!</p></body></html>"; [webView loadHTMLString:html baseURL:nil]; Snippet for the drawRect method: - (void)drawRect:(CGRect)aRect { CGContextRef context = UIGraphicsGetCurrentContext(); [[webView layer] renderInContext:context]; }

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  • Applying Test Driven Development to a tightly coupled architecture

    - by Chris D
    Hi all, I've recently been studying TDD, attended a conference and have dabbled in few tests and already I'm 100% sold, I absolutely love it TDD. As a result I've raised this with my seniors and they are prepared to give it a chance, so they have tasked me with coming up with a way to implement TDD in the development of our enterprise product. The problem is our system has evolved since the days of VB6 to .NET and implements alot of legacy technology and some far from best practice development techniques i.e. alot of business logic in the ASP.NET code behind and client script. The largest problem however is how our classes are tightly coupled with database access; properties, methods, constructors - usually has some database access in some form or another. We use an in-house data access code generator tool that creates sqlDataAdapters that gives us all the database access we could ever want, which helps us develop extremely quickly, however, classes in our business layer are very tightly coupled to this data layer - we aren't even close to implementing some form of repository design. This and the issues above have created me all sorts of problems. I have tried to develop some unit tests for some existing classes I've already written but the tests take ALOT longer to run since db access is required, not to mention since we use the MS Enterprise Caching framework I am forced to fake a httpcontext for my tests to run successfully which isn't practical. Also, I can't see how to use TDD to drive the design of any new classes I write since they have to be soo tightly coupled to the database ... help! Because of the architecture of the system it appears I can't implement TDD without some real hack which in my eyes just defeats the aim of TDD and the huge benefits that come with. Does anyone have any suggestions how I could implement TDD with the constraints I'm bound too? or do I need to push the repository design pattern down my seniors throats and tell them we either change our architecture/development methodology or forget about TDD altogether? :) Thanks

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  • Binding TabControl ItemsSource to an ObservableCollection of ViewModels causes content to refresh on

    - by Brent
    I'm creating an WPF application using the MVVM framework, and I've adopted several features from Josh Smith's article on MVVM here... Most importantly, I'm binding a TabControl to an ObservableCollection of ViewModels. This means that am using a tabbed MDI interface that displays a UserControl as the content of a TabItem. The issue I'm seeing in my application is that when I have several tabs and I flip back and forth between tabs, the content is being refersh each time I change tabs. If you download Josh Smith's source code, you'll see that his app has the same problem. For example, click on the "View All Customers" button and scroll down to the bottom the ListView. Next click on the "Create New Customer" button. When you switch back to the All Customer view you'll notice that the ListView scrolls back to the top. If you switch back to the New Customer tab and place your cursor in one of the TextBoxes, then switch to All Customers tab and back, you'll notice that the cursor is now gone. I imagine that this is because I'm using an ObservableCollection, but I can't be sure. Is there any way to prevent the tab's content from refreshing when it receives the focus? EDIT: I found my problem when I ran the profiler on my application. I'm defining a DataTemplate for my ViewModels so it knows how to render the ViewModel when it is displayed in the tab... like so: <DataTemplate DataType="{x:Type vm:CustomerViewModel}"> <vw:CustomerView/> </DataTemplate> So whenever I switch to a different tab, it has to re-create the ViewModel again. I fixed it temporarily by changing my ObservableCollection of ViewModels to an ObservableCollection of UserControls. However, I would really still like to use DataTemplates if possible. Is there a way to make a DataTemplate work?

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  • What is wrong with this solution? (Perm-Missing-Elem codility test)

    - by user2956907
    I have started playing with codility and came across this problem: A zero-indexed array A consisting of N different integers is given. The array contains integers in the range [1..(N + 1)], which means that exactly one element is missing. Your goal is to find that missing element. Write a function: int solution(int A[], int N); that, given a zero-indexed array A, returns the value of the missing element. For example, given array A such that: A[0] = 2 A[1] = 3 A[2] = 1 A[3] = 5 the function should return 4, as it is the missing element. Assume that: N is an integer within the range [0..100,000]; the elements of A are all distinct; each element of array A is an integer within the range [1..(N + 1)]. Complexity: expected worst-case time complexity is O(N); expected worst-case space complexity is O(1), beyond input storage (not counting the storage required for input arguments). I have submitted the following solution (in PHP): function solution($A) { $nr = count($A); $totalSum = (($nr+1)*($nr+2))/2; $arrSum = array_sum($A); return ($totalSum-$arrSum); } which gave me a score of 66 of 100, because it was failing the test involving large arrays: "large_range range sequence, length = ~100,000" with the result: RUNTIME ERROR tested program terminated unexpectedly stdout: Invalid result type, int expected. I tested locally with an array of 100.000 elements, and it worked without any problems. So, what seems to be the problem with my code and what kind of test cases did codility use to return "Invalid result type, int expected"?

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  • Entity Framework 4 "Generate Database from Model" to SQLEXPRESS mdf results in "Could not locate ent

    - by InfinitiesLoop
    I'm using Visual Studio 2010 RTM. I want to do model-first, so I started a new MVC app and added a new blank edmx. Created a few entities. No problem. Then I "Generate Database from Model", and allow the dialog to create a new database for me, which it does successfully as 'mydatabase.mdf' in the app's App_Data directory. Then I open the generated sql file (in Visual Studio). To run it of course I have to give it a connection. I am not sure if it's right, but I used '.\SQLEXPRESS' and Windows authentication. No idea how I'd tell it where the MDF is. Then the problem -- upon executing it, I get: Msg 911, Level 16, State 1, Line 1 Could not locate entry in sysdatabases for database 'mydatabase'. No entry found with that name. Make sure that the name is entered correctly. And indeed there were no tables created in the MDF. So... what am I doing wrong, or am I off my rocker expecting this to work? :)

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  • SharePoint: Can't Connect to a Configuration Database When Using Configuration Wizard

    - by Denis
    Hello everyone. I wonder if you could help me with the following problem: We have a SharePoint farm consisted of two servers with an NLB (a load balancer), a database server and an index server (4 servers in total). The issues initially appeared when we were trying to change Search settings via Shared services provider and an error was appearing with the message I can’t even remember now. To fix that problem, we decided to restart Search services on the Index server via Central Administration… and the process had stuck with a status “stopping” for several days. We’ve found a few solutions on the forums, but nothing had helped. Then we’ve tried to exclude the Index server from the farm, but yet again, Search services would not stop. However, after a week we’ve noticed that the services finally stopped. That was a prologue. So, after the Search services have finally stopped, we decided to return the Index server back to the farm via the SharePoint Configuration wizard. When we click on a button “Search database instances” (don’t know the exact name in English, we have a Russian version), a correct database name and user are automatically appear in the relevant fields. Then we supply a password for the user and click “next” two times and the configuration begins. Unfortunately, at the second stage we receive the error “Could not connect to a configuration database” with the exception in the log file: “Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.” Now we can’t figure out why the configuration wizard can’t connect to the configuration database. Any suggestions will be really appreciated.

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  • dynamic GridView in CreateChildControls throws a "RegisterRequiresControlState can only be called be

    - by tbischel
    I am trying to add a GridView dynamically to a SharePoint Web Part. Right now, the first time I load the gridview, everything works fine. My gridview has an edit column enabled... so when I click that, it throws an exception when I try and add the gridview control on the postback. The exception: "RegisterRequiresControlState can only be called before and during PreRender" I've tried adding my controls in the CreateChildControls function, the OnInit, OnPageLoad, and OnPreRender... all exhibit the same problem. Does anyone know what might cause this kind of error? Edit: So to test this problem, I created a local GridView in the webpart, recreating all the properties in the one that failed. It actually worked this time through... the only difference that I could identify was that I had made the gridview a static variable in another class, where as here I initiated the gridview as a local variable. I even used the same initializing function for both the original and modified version, same difference. So why would creating a GridView locally affect the ability to add it to a web part?

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  • handling refrence to pointers/double pointers using SWIG [C++ to Java]

    - by Siddu
    My code has an interface like class IExample { ~IExample(); //pure virtual methods ...}; a class inheriting the interface like class CExample : public IExample { protected: CExample(); //implementation of pure virtual methods ... }; and a global function to create object of this class - createExample( IExample *& obj ) { obj = new CExample(); } ; Now, I am trying to get Java API wrapper using SWIG, the SWIG generated interface has a construcotr like - IExample(long cPtr, boolean cMemoryOwn) and global function becomes createExample(IExample obj ) The problem is when i do, IExample exObject = new IExample(LogFileLibraryJNI.new_plong(), true /*or false*/ ); createExample( exObject ); The createExample(...) API at C++ layer succesfully gets called, however, when call returns to Java layer, the cPtr (long) variable does not get updated. Ideally, this variable should contain address of CExample object. I read in documentation that typemaps can be used to handle output parameters and pointer references as well; however, I am not able to figure out the suitable way to use typemaps to resolve this problem, or any other workaround. Please suggest if i am doing something wrong, or how to use typemap in such situation?

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  • xml parsing using nsxmlParser in iphone

    - by filthynight
    hi all, I have a problem in parsing xml from google api, the api xml looks like this ....... Now the problem is that first of all, the tags are different, like first parent tag name is "abc" and second parent tag is "efg", further more the inner tags are different as well. i have modified code got from web that it parses another url, but in this case since the tags keeps on changing it does not work. the url = "http://www.google.com/ig/api?weather=anaheim,ca" Source Code (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{ //NSLog(@"found this element: %@", elementName); if (currentElement) { [currentElement release]; currentElement = nil; } currentElement = [elementName copy]; NSString *thisOwner = [attributeDict objectForKey:@"data"]; NSLog(@"element Name-------: %@", thisOwner); if ([elementName isEqualToString:@"forecast_information"]) //|| [elementName isEqualToString:@"current_conditions"] || [elementName isEqualToString:@"forecast_conditions"]) { // clear out our story item caches... //NSString *nm = [[attributeDict objectForKey:@"city"] stringValue]; //NSLog(@"value...%@",nm); item = [[NSMutableDictionary alloc] init]; currentTitle = [[NSMutableString alloc] init]; currentDate = [[NSMutableString alloc] init]; currentSummary = [[NSMutableString alloc] init]; currentLink = [[NSMutableString alloc] init]; [item setObject:currentLink forKey:@"postal_code"]; [item setObject:currentSummary forKey:@"current_date_time"]; [item setObject:currentDate forKey:@"unit_system"]; NSLog(@"adding story: %@", currentTitle); [stories addObject:[item copy]]; } } I have another function didEndElement where the values are assigned in the array, but i could not figure out how to assign values of an attribute. Can somebody please help me in this regards Thanks!

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  • How can I beta test web Perl modules under Apache/mod_perl on production web server?

    - by DVK
    We have a setup where most code, before being promoted to full production, is deployed in BETA mode - meaning, it runs in full production environment (using production database - usually production data; and production web server). We call that stage BETA testing. One of the main requirements is that BETA code promotion to production must be a simple "cp" command from beta to production directory - no code/filename changes. For non-web Perl code, achieving seamless BETA test is quite doable (see details here): Perl programs live in a standard location under production root (/usr/code/scripts) with production perl modules living under the same root (/usr/code/lib/perl) The BETA code has 100% same code paths except under beta root (/usr/code/beta/) A special module manipulates @INC of any script based on whether the script was called from /usr/code/scripts or /usr/code/test/scripts, to include beta libraries for beta scripts. This setup works fine up till we need to beta test our web Perl code (the setup is EmbPerl and Apache/mod_perl). The hang-up is as follows: if both a production Perl module and BETA Perl module have the same name (e.g. /usr/code/lib/perl/MyLib1.pm and /usr/code/beta/lib/perl/MyLib1.pm), then mod_perl will only be able to load ONE of these modules into memory - and there's no way we are aware of for a particular web page to affect which version of the module is currently loaded due to concurrency issues. Leaving aside the obvious non-programming solution (get a bloody BETA web server) which for political/organizational reasons is not feasible, is there any way we can somehow hack around this problem in either Perl or mod_perl? I played around with various approaches to unloading Perl modules that %INC has listed, but the problem remains that another user might load a beta page at just the right (or rather wrong) moment and have the beta module loaded which will be used for my production page.

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  • C# StreamReader.ReadLine() - Need to pick up line terminators

    - by Tony Trozzo
    I wrote a C# program to read an Excel .xls/.xlsx file and output to CSV and Unicode text. I wrote a separate program to remove blank records. This is accomplished by reading each line with StreamReader.ReadLine(), and then going character by character through the string and not writing the line to output if it contains all commas (for the CSV) or all tabs (for the Unicode text). The problem occurs when the Excel file contains embedded newlines (\x0A) inside the cells. I changed my XLS to CSV converter to find these new lines (since it goes cell by cell) and write them as \x0A, and normal lines just use StreamWriter.WriteLine(). The problem occurs in the separate program to remove blank records. When I read in with StreamReader.ReadLine(), by definition it only returns the string with the line, not the terminator. Since the embedded newlines show up as two separate lines, I can't tell which is a full record and which is an embedded newline for when I write them to the final file. I'm not even sure I can read in the \x0A because everything on the input registers as '\n'. I could go character by character, but this destroys my logic to remove blank lines. Any ideas would be greatly appreciated.

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