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• When does the .NET runtime hold a reference count > 1 for COM objects?

  - by Wim Coenen

  Until recently, I believed that the .NET runtime only increases the reference count of COM objects by 1 when creating a runtime-callable wrapper, and that only one such runtime-callable wrapper is created for any given COM object. If I'm not mistaken, the above implies that Marshal.FinalReleaseComObject and Marshal.ReleaseComObject do the same thing in practice. However, today I was writing some tests to verify that COM objects are properly released by my code. I do this by invoking the supposedly released object and checking for the expected InvalidComObjectException. It turns out that there are cases where the exception is thrown after a FinalReleaseComObject, but not after a ReleaseComObject. Does this mean that the .NET 2.0 runtime can hold more than one reference to a COM object? If so, when does it do this?

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• Trying to compile VS2008 project on Win 64 bit which is custom Powershell PSSnapin

  - by Boris Kleynbok

  Library Project compiles fine for ANY CPU in VS2008 running on Win 7 64 -bit. Now in the post build following command fails when attemptiong to register library dll: PS C:\Windows\Microsoft.NET\Framework64\v2.0.50727 .\installutil C:\path\Project.dll Exception occurred while initializing the installation: System.BadImageFormatException: Could not load file or assembly 'file:///C:\path\Project.dll' or one of its dependencies. An attempt was made to load a program with an incorrect format.. Do I need to compile the project as x64 I was under impression that AnyCPU will take care of it. Alo my library does have dependencies. Do they also need to be compiled as x64 bit? Any help is appreciated.

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• Subsonic 3 Simple Repository And Transactions

  - by ChrisKolenko

  Hey everyone, So this is what I have so far. Am I doing something wrong or is there a bug in 3.0.0.3? var Repository = new SimpleRepository("DBConnectionName"); using (TransactionScope ts = new TransactionScope()) { using (SharedDbConnectionScope scs = new SharedDbConnectionScope("connstring", "providerName")) { try { for (int i = 0; i < 5; i++) { Supplier s = new Supplier(); s.SupplierCode = i.ToString(); s.SupplierName = i.ToString(); Repository.Add<Supplier>(s); } ts.Complete(); } catch { } } } I'm getting an error in SubSonic DbDataProvider public DbConnection CurrentSharedConnection { get { return __sharedConnection; } protected set { if(value == null) { __sharedConnection.Dispose(); etc.. __sharedConnection == null :( Object Null Reference Exception :(

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• parallel-python error: RuntimeError("Socket connection is broken")

  - by user288558

  I am using a simple program to send a function: import pp nodes=('mosura02','mosura03','mosura04','mosura05','mosura06', 'mosura09','mosura10','mosura11','mosura12') nodes=('miner:60001',) def pptester(): js=pp.Server(ppservers=nodes) js.set_ncpus(0) tmp=[] for i in range(200): tmp.append(js.submit(ppworktest,(),(),('os',))) return tmp def ppworktest(): import os return os.system("uname -a") the result is: wkerzend@mosura:/home/wkerzend/tmp/ppython_test>ssh miner "source ~/coala_python_setup.sh;ppserver.py -d -p 60001" 2010-04-12 00:50:48,162 - pp - INFO - Creating server instance (pp-1.6.0) 2010-04-12 00:50:52,732 - pp - INFO - pp local server started with 32 workers 2010-04-12 00:50:52,732 - pp - DEBUG - Strarting network server interface=0.0.0.0 port=60001 Exception in thread client_socket: Traceback (most recent call last): File "/usr/lib64/python2.6/threading.py", line 525, in __bootstrap_inner self.run() File "/usr/lib64/python2.6/threading.py", line 477, in run self.__target(*self.__args, **self.__kwargs) File "/home/wkerzend/python_coala/bin/ppserver.py", line 161, in crun ctype = mysocket.receive() File "/home/wkerzend/python_coala/lib/python2.6/site-packages/pptransport.py", line 178, in receive raise RuntimeError("Socket connection is broken") RuntimeError: Socket connection is broken

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• User Control inherit from ListBox in Wpf?

  - by Rev

  Hi. I want to make a user Control in WPf with same properties and events like ListBox.(can add items , remove them , selecting ,...) on way in windows App is use a user control which is inherit form ListBox. but in WPF I don't know how make User Control inherit from ListBox (or other WPF Control)!!! I write this code but it had an exception public partial class InboxListItem : ListBox { public InboxListItem() { InitializeComponent(); } and It's Xaml file <UserControl x:Class="ListBoxControl.InboxListItem" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:myTypes="clr-namespace:ListBoxControl" />

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• Quick Deployment Job failing SharePoint

  - by TT.LTT

  I have a content deployment job from one server to another....content deployment job works fine but when I turn on Quick Deploy job it start showing me system event error... In quick deploy settings I put it as after every 30 minutes so I am getting error after every 30 minutes in system event.... The Execute method of job definition Microsoft.SharePoint.Publishing.Administration.ContentDeploymentJobhe Execute method of job definition Microsoft.SharePoint.Publishing.Administration.ContentDeploymentJobDefinition (ID daa20dd3-f6ad-4e27-923a-1ebf26c71723) threw an exception. More information is included below. ContentDeploymentJobReport with ID '{00000000-0000-0000-0000-000000000000}' was not found. Parameter name: jobReportId

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• Is it possible to use Windows Authentication to logon to Axapta 4 (or 5) in a Website/webservice

  - by rdkleine

  Using this code I can not create a connection using IIS 7 with Windows Authentication. try { Axapta axapta = new Axapta(); axapta.Logon("", "", "", ""); //Or this> axapta.Logon("COMPANY", "NL-nl", "OBJECTSERVER", ""); System.Diagnostics.Debug.WriteLine("yep"); axapta.Logoff(); } catch (Exception ex) { System.Diagnostics.Debug.WriteLine(ex.ToString()); } When changing App Pool Identity to a user with rights in Axapta then I can create a connection. So it seems like the App Pool Identity is used. Is it even possible to get this do without using the LogonAs method? Is there some other way short of asking the user for they're credentials? Appreciate any help on this, Ralf

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• Grails: Problem with nested associations in criteria builder

  - by Mr.B

  I have a frustrating problem with the criteria builder. I have an application in which one user has one calendar, and a calendar has many entries. Seems straightforward enough, but when I try to get the calendar entries for a given user, I can't access the user property (MissingMethodException). Here's the code: def getEntries(User user) { def entries = Entries.createCriteria().list() { calendar { user { eq("user.id", user.id) } } } } I have even tried the following variation: def getEntries(User user) { def entries = Entries.createCriteria().list() { calendar { eq("user", user) } } } That did not raise an exception, but didn't work either. Here's the relevant parts of the domain classes: class Calendar { static belongsTo = [user: User] static hasMany = [entries: Entries] ... } class User { Calendar calendar ... } class Entry { static belongsTo = [calendar: Calendar] ... } When Googling I came across a similar problem noted in early 2008: http://jira.codehaus.org/browse/GRAILS-1412 But according to that link this issue should have been solved long ago. What am I doing wrong?

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• Linq2SQL using Update StoredProcedure

  - by PeterTheNiceGuy

  We use queries generated by Linq for data retrieval but for INSERT and UPDATE we do not allow generated SQL, but restrict to the use of stored procedures. I connected the Update and the Insert behaviour in the DBML to the stored procedures. The procedures are called, the data gets inserted/updated = all if fine, except in the case of optimistic concurrency. If a record was changed between retrieval and update, the update should fail. When Linq generates the Update statement itself, it throws a ChangeConflictException as expected, but using the stored procedure no Exception is thrown. Thanks a lot for any help on this!

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• LINQ-To-SQL and Many-To-Many Relationship Deletions

  - by Jake

  I have a many-to-many relationship between two tables, let's say Friends and Foods. If a friend likes a food I stick a row into the FriendsFoods table, like this: ID Friend Food 1 'Tom' 'Pizza' FriendsFoods has a Primary Key 'ID', and two non-null foreign keys 'Friend' and 'Food' to the 'Friends' and 'Foods' tables, respectively. Now suppose I have a Friend tom .NET object corresponding to 'Tom', and Tom no longer likes pizza (what is wrong with him?) FriendsFoods ff = tom.FriendsFoods.Where(x => x.Food.Name == 'Pizza').Single(); tom.FriendsFoods.Remove(ff); pizza.FriendsFoods.Remove(ff); If I try to SubmitChanges() on the DataContext, I get an exception because it attempts to insert a null into the Friend and Food columns in the FriendsFoods table. I'm sure I can put together some kind of convoluted logic to track changes to the FriendsFoods table, intercept SubmitChanges() calls, etc to try and get this to work the way I want, but is there a nice, clean way to remove a Many-To-Many relationship with LINQ-To-SQL?

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• Scala regex Named Capturing Groups

  - by Brent

  In scala.util.matching.Regex trait MatchData I see that there support for groupnames (Named Capturing Groups) But since Java does not support groupnames until version 7 as I understand it, Scala version 2.8.0.RC4 (Java HotSpot(TM) 64-Bit Server VM, Java 1.6. gives me this exception: scala> val pattern = """(?<login>\w+) (?<id>\d+)""".r java.util.regex.PatternSyntaxException: Look-behind group does not have an obvio us maximum length near index 11 (?<login>\w+) (?<id>\d+) ^ at java.util.regex.Pattern.error(Pattern.java:1713) at java.util.regex.Pattern.group0(Pattern.java:2488) at java.util.regex.Pattern.sequence(Pattern.java:1806) at java.util.regex.Pattern.expr(Pattern.java:1752) at java.util.regex.Pattern.compile(Pattern.java:1460) So the question is Named Capturing Groups supported in Scala? If so any examples out there? If not I might look into the Named-Regexp lib from clement.denis.

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• System.EntryPointNotFoundException:while importing libsrp in a c# code under ubuntu

  - by Hema Joshi

  hi, i am importing libsrp.so in a c# code under ubuntu.my code is using System; using System.IO; using System.Text; using System.Runtime.InteropServices; namespace Main { public static class Test { [DllImport("libsrp.so" ,EntryPoint = "SRP_initialize_library", CallingConvention=CallingConvention.Cdecl)] public static extern int SRP_initialize_library(); [DllImport("libsrp.so" ,EntryPoint = "SRP_finalize_library", CallingConvention=CallingConvention.Cdecl)] public static extern int SRP_finalize_library(); } public class Test1 { public static void Main( string[] args ) { Console.Write("output is:", Test.SRP_initialize_library()); Test. SRP_finalize_library(); Console.Write("\n"); } } } but while runnign the code using mono i am finding error Unhandled Exception: System.EntryPointNotFoundException: SRP_initialize_library at (wrapper managed-to-native) Main.Test:SRP_initialize_library () at Main.Test1.Main (System.String[] args) [0x00000] i am unable to find what is the problem? please tell me where is the problem?

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• How do I use test/beta Perl modules from test Perl scripts?

  - by DVK

  If my Perl code has a production code location and "beta" code location (e.g. production Perl code us in /usr/code/scripts, BETA Perl code is in /usr/code/beta/scripts; production Perl libraries are in /usr/code/lib/perl and BETA versions of those libraries are in /usr/code/beta/lib/perl, is there an easy way for me to achieve such a setup? The exact requirements are: The code must be THE SAME in production and BETA location. To clarify, to promote any code (library or script) from BETA to production, the ONLY thing which needs to happen is literally issuing cp command from BETA to prod location - both the file name AND file contents must remain identical. BETA versions of scripts must call other BETA scripts and BETA libraries (if exist) or production libraries (if BETA libraries do not exist) The code paths must be the same between BETA and production with the exception of base directory (/usr/code/ vs /usr/code/beta/) I will present how we solved the problem as an answer to this question, but I'd like to know if there's a better way.

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• ChannelFactory don't have an address on the endpoint, why?

  - by Maxim

  When I create a new instance of a ChannelFactory: var factory = new ChannelFactory<IMyService>(); and that I create a new channel, I have an exception saying that the address of the Endpoint is null. My configuration inside my web.config is as mentioned and everything is as it is supposed to be (especially the address of the endpoint). If I create a new MyServiceClientBase, it loads all the configuration from my channel factory: var factoryWithClientBase = new MyServiceClientBase().ChannelFactory; Console.WriteLine(factoryWithClientBase.Endpoint.Address); //output the configuration inside the web.config var factoryWithChannelFactory = new ChannelFactory<IMyService>(); Console.WriteLine(factoryWithChannelFactory.Endpoint.Address); //output nothing (null) Why?

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• How to add an Interbase connection pool to glassfish?

  - by kgrad

  Hi, I am attempting to add an Interbase connection pool to GlassFish v3 to use EJB 3.1 in a project. The glassfish log appears to be connecting to my database properly, it spits out all my table names and indices. However, I get an error INFO: fetching database metadata SEVERE: could not complete schema update java.lang.NullPointerException at interbase.interclient.ResultSet.local_Close(Unknown Source) ... And when I ping the connection pool from within Glassfish I receive "Ping failed Exception - null". I have the following properties set with my connectionpool: resource type: javax.sql.DataSource Datasource Classname: interbase.interclient.DataSource portNumber: 3050 as well as my database info. I can't seem to find information elsewhere. This question is similar but did not receive an answer. thanks.

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• How can I tell datacontext I've updated a record via StoreProcedure

  - by Ldsenow

  Hi Geeks, I've a stroe procedure to update a record and after running it I use LinqToSql to delete the record. I know it is weird but I just want to test how smart the datacontext it is and understand how it works. Since the datacontext caches the results so any change via it can be recorded but now I use a store procedure to update something, it would not know. So when I try to delete it, an exception comes out "Row not found or changed". How I can tell the datacontext what I have updated? If I can do so the problem will sovle.

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• Calling python from Java?

  - by griffin

  I'm trying to call Jython from a Java 6 application using javax.script: import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import javax.script.ScriptException; public class jythonEx { public static void main (String args[]) throws ScriptException { ScriptEngineManager mgr = new ScriptEngineManager(); ScriptEngine pyEngine = mgr.getEngineByName("python"); try { pyEngine.eval("print \"Python - Hello, world!\""); } catch (Exception ex) { ex.printStackTrace(); } } } This is causing a NullPointerException: java.lang.NullPointerException at jythonEx.main(jythonEx.java:12) Does anyone have any idea what I'm doing wrong here?

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• How to make a reference to a normal java class from GWT server side

  - by mohammed-qumhieh

  hello I building my project using GWT plugin for eclipse Galileo, after i done from RPC between the server and client, i trying to make a reference from gwt server side to normal java class in non-gwt-project, but every time i make an object from the class (which in non-gwt-project) gives me ClassNotFoundException. i did the buildpath for the gwt project, but still gives me the same exception, is there a way to make that from server side (not from client side). i need help please, i spent a lot of time searching for solution but i did not found anything. i appreciate any suggestions...thanks

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• WebClient DownloadStringCompleted Never Fired in Console Application

  - by azamsharp

  I am not sure why the callback methods are not fired AT ALL. I am using VS 2010. static void Main(string[] args) { try { var url = "some link to RSS FEED"; var client = new WebClient(); client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadStringCompleted); client.DownloadDataCompleted += new DownloadDataCompletedEventHandler(client_DownloadDataCompleted); client.DownloadStringAsync(new Uri(url)); } catch (Exception ex) { Console.WriteLine(ex.Message); } } // THIS IS NEVER FIRED static void client_DownloadDataCompleted(object sender, DownloadDataCompletedEventArgs e) { Console.WriteLine("something"); } // THIS IS NEVER FIRED static void client_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e) { Console.WriteLine("do something"); var rss = XElement.Parse(e.Result); var pictures = from item in rss.Descendants("channel") select new Picture { Name = item.Element("title").Value }; foreach (var picture in pictures) { Console.WriteLine(picture.Name); Console.WriteLine(picture.Url); } }

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• Ruby on Rails 2.3.5: update_all failing on ActiveRecord

  - by randombits

  I'm trying to update a collection of records in my database using ActiveRecord's update_all. Enter script/console. MyModel.update_all("reserved = 1", :order => 'rand()', :limit => 1000) ActiveRecord thinks order is a column, says it's unknown and throws an exception. According to the documentation though, my syntax looks sane. This is RoR 2.3.5. When doing MyModel.update_all("reserved = 1") alone, it works just fine. Also if I do MyModel.update_all("reserved = 1", "reserve_type = 2", :order = "rand()", :limit = 1000) = 0 0 rows affected. I'm simply trying to do: UPDATE MyModel SET reserved=1, reserve_type=2 ORDER BY RAND() LIMIT 1000

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• Help a Python newbie with a Django model inheritance problem

  - by Joshmaker

  I'm working on my first real Django project after years of PHP programming, and I am running into a problem with my models. First, I noticed that I was copying and pasting code between the models, and being a diligent OO programmer I decided to make a parent class that the other models could inherit from: class Common(model.Model): self.name = models.CharField(max_length=255) date_created = models.DateTimeField(auto_now_add=True) date_modified = models.DateTimeField(auto_now=True) def __unicode__(self): return self.name class Meta: abstract=True So far so good. Now all my other models extend "Common" and have names and dates like I want. However, I have a class for "Categories" were the name has to be unique. I assume there should be a relatively simple way for me to access the name attribute from Common and make it unique. However, the different methods I have tried to use have all failed. For example: class Category(Common): def __init__(self, *args, **kwargs): self.name.unique=True Spits up the error "Caught an exception while rendering: 'Category' object has no attribute 'name' Can someone point me in the right direction?

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• Why doesn't .NET find the OpenSSL.NET dll?

  - by Lazlo

  EDIT (the whole question, it was too unclear) I want to use OpenSSL.NET The OpenSSL.NET install instructions page: INSTALL Make sure you have libeay32.dll and ssleay32.dll in the current working directory of your application or in your PATH. DONE In your .NET project, add a reference to the ManagedOpenSsl.dll assembly. DONE I have put libeay32.dll and ssleay32.dll in both my bin/Debug and bin/Release directories. I have also put them in system32. Here is my FULL code: using System; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { try { OpenSSL.Crypto.RSA rsa = new OpenSSL.Crypto.RSA(); } catch (Exception e) { Console.WriteLine(e.InnerException.Message); } Console.Read(); } } } I get the following error: (Unable to load DLL 'libeay32') Here is the Process Monitor log (upon request): What am I doing wrong? Why isn't the DLL found?

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• CruiseControl: How to read logs from exec task

  - by Marty

  I start an external groovy script via cruisecontrol, which basically works. My problem is that if the groovy script fails I only get the "error string found" in my cruise webapp and email; its even not in the log files. The groovy script writes it output to stdout and to a logfile. How it is possible to display the output of an external script in the cruisecontrol logs? <project name="proj"> <schedule> <exec workingdir="/myscripts/folder" command="//bin/groovy" args="build.groovy -p ${project.name}.properties" errorstr="Exception"/> </schedule> </project>

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• How do I stop IIS7 from putting out its own 404 before my MVC app gets a chance to handle it?

  - by Gary McGill

  I have an ASP.NET MVC 2 application, which has an Application_Error event handler in global.asax. In this, I'm detecting the case where the Exception type is HttpException and the HTTP code is 404, and redirecting to my own 404-handling page. This works fine on my Cassini development server, but now I'm trying to move it over to my production server which has IIS7. When I request a non-existent URL, IIS7 is showing its own 404 page, and so far as I can tell, my Application_Error method is never called. How do I fix that?

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• Using Solr and Zends Lucene port together...

  - by thebluefox

  Afternoon chaps, After my adventures with Zend-Lucene-Search, and discovering it isn't all its cracked up to be when indexing large datasets, I've turned to Solr (thanks to Bill Karwin for that :) ) I've got Solr indexing the db far far quicker now, taking just over 8 minutes to index a table of just over 1.7million rows - which I'm very pleased with. However, when I come to try and search the index with the Zend port, I run into the following error; Fatal error: Uncaught exception 'Zend_Search_Lucene_Exception' with message 'Unsupported segments file format' in /var/www/Zend/Search/Lucene.php:407 Stack trace: #0 /var/www/Zend/Search/Lucene.php(555): Zend_Search_Lucene-_readSegmentsFile() #1 /var/www/z_search.php(12): Zend_Search_Lucene-__construct('tmp/feeds_index') #2 {main} thrown in /var/www/Zend/Search/Lucene.php on line 407 I've tried to have a search around but can't seem to find anything about this problem, everyone just seems to be able to get them to work? Any help as always much appreciated :) Thanks, Tom

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