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  • NSLock deadlock

    - by twinkle
    I have an instance variable in class Foo @property (nonatomic, retain) NSLock *mLock; initialized as: self.mLock=[NSLock new]; Foo also has -(void)getLock { while (![self.mLock tryLock]) { NSLog(@"Trying to lock... sleep(1)"); sleep(1); } NSLog(@">>>>>>> Acquiring LOCK"); [self.mLock lock]; NSLog(@">>>>>>> LOCK acquired"); } From another method in the Foo class, I call [Foo getLock]. This immediately results in a deadlock. Log below: 2010-03-18 07:06:01.660 test[9816:207] >>>>>>> Acquiring LOCK 2010-03-18 07:06:01.665 test[9816:207] *** -[NSLock lock]: deadlock (<NSLock: 0x3c0f820> '(null)') 2010-03-18 07:06:01.666 test[9816:207] *** Break on _NSLockError() to debug. Thanks!

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  • Extra blank page when converting HTML to PDF using abcPDF.

    - by ProfK
    I have an HTML report, with each print page contained by a <div class="page">. The page class is defined as width: 180mm; height: 250mm; page-break-after: always; background-position: centre top; background-image: url(Images/MainBanner.png); background-repeat: no-repeat; padding-top: 30mm; After making a few changes to my report content, when I call abcPDF to convert the report to PDF, suddenly I'm getting a blank page inserted after every real report page. I don't want to roll back the changes I've just made to remove this problem, so I'm hoping someone may know why the extra pages are being inserted.

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  • Wpf Combobox in Master/Detail MVVM

    - by isak
    I have MVVM master /details like this: <Window.Resources> <DataTemplate DataType="{x:Type model:EveryDay}"> <views:EveryDayView/> </DataTemplate> <DataTemplate DataType="{x:Type model:EveryMonth}"> <views:EveryMonthView/> </DataTemplate> </Window.Resources> <Grid> <ListBox Margin="12,24,0,35" Name="schedules" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Path=Elements}" SelectedItem="{Binding Path=CurrentElement}" DisplayMemberPath="Name" HorizontalAlignment="Left" Width="120"/> <ContentControl Margin="168,86,32,35" Name="contentControl1" Content="{Binding Path=CurrentElement.Schedule}" /> <ComboBox Height="23" Margin="188,24,51,0" Name="comboBox1" VerticalAlignment="Top" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Path=Schedules}" SelectedItem="{Binding Path=CurrentElement.Schedule}" DisplayMemberPath="Name" SelectedValuePath="ID" SelectedValue="{Binding Path=CurrentElement.Schedule.ID}" /> </Grid> This Window has DataContext class: public class MainViewModel : INotifyPropertyChanged { public MainViewModel() { _elements.Add(new Element("first", new EveryDay("First EveryDay object"))); _elements.Add(new Element("second", new EveryMonth("Every Month object"))); _elements.Add(new Element("third", new EveryDay("Second EveryDay object"))); _schedules.Add(new EveryDay()); _schedules.Add(new EveryMonth()); } private ObservableCollection<ScheduleBase> _schedules = new ObservableCollection<ScheduleBase>(); public ObservableCollection<ScheduleBase> Schedules { get { return _schedules; } set { _schedules = value; this.OnPropertyChanged("Schedules"); } } private Element _currentElement = null; public Element CurrentElement { get { return this._currentElement; } set { this._currentElement = value; this.OnPropertyChanged("CurrentElement"); } } private ObservableCollection<Element> _elements = new ObservableCollection<Element>(); public ObservableCollection<Element> Elements { get { return _elements; } set { _elements = value; this.OnPropertyChanged("Elements"); } } #region INotifyPropertyChanged Members public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanged(string propertyName) { PropertyChangedEventHandler handler = PropertyChanged; if (handler != null) { handler(this, new PropertyChangedEventArgs(propertyName)); } } #endregion } One of Views: <UserControl x:Class="Views.EveryDayView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" > <Grid > <GroupBox Header="Every Day Data" Name="groupBox1" VerticalAlignment="Top"> <Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch"> <TextBox Name="textBox2" Text="{Binding Path=AnyDayData}" /> </Grid> </GroupBox> </Grid> I have problem with SelectedItem in ComboBox.It doesn't works correctly.

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  • IQueryable<T> Extension Method not working

    - by Micah
    How can i make an extension method that will work like this public static class Extensions<T> { public static IQueryable<T> Sort(this IQueryable<T> query, string sortField, SortDirection direction) { // System.Type dataSourceType = query.GetType(); //System.Type dataItemType = typeof(object); //if (dataSourceType.HasElementType) //{ // dataItemType = dataSourceType.GetElementType(); //} //else if (dataSourceType.IsGenericType) //{ // dataItemType = dataSourceType.GetGenericArguments()[0]; //} //var fieldType = dataItemType.GetProperty(sortField); if (direction == SortDirection.Ascending) return query.OrderBy(s => s.GetType().GetProperty(sortField)); return query.OrderByDescending(s => s.GetType().GetProperty(sortField)); } } Currently that says "Extension methods must be defined in a non-generic static class". How do i do this?

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  • Enum in WCF RIA Services Object

    - by Blake Blackwell
    Is it possible to have an enum with WCF RIA Services? When I check the generated code for my custom POCO class I don't see the enum property generated. Here is an example of what I'm trying to do: public class Legend { public enum ViewStateType { OnExpanded = 1, OnContracted = 2, OffExpanded = 3, OffContracted = 4 } [Key] public Guid LegendId { get; set; } [EnumDataType(typeof(ViewStateType))] public ViewStateType ViewState { get; set; } } I tried with and without the EnumDataType attribute.

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  • VB.Net Dynamically Load DLL

    - by hermiod
    I am trying to write some code that will allow me to dynamically load DLLs into my application, depending on an application setting. The idea is that the database to be accessed is set in the application settings and then this loads the appropriate DLL and assigns it to an instance of an interface for my application to access. This is my code at the moment: Dim SQLDataSource As ICRDataLayer Dim ass As Assembly = Assembly. _ LoadFrom("M:\MyProgs\WebService\DynamicAssemblyLoading\SQLServer\bin\Debug\SQLServer.dll") Dim obj As Object = ass.CreateInstance(GetType(ICRDataLayer).ToString, True) SQLDataSource = DirectCast(obj, ICRDataLayer) MsgBox(SQLDataSource.ModuleName & vbNewLine & SQLDataSource.ModuleDescription) I have my interface (ICRDataLayer) and the SQLServer.dll contains an implementation of this interface. I just want to load the assembly and assign it to the SQLDataSource object. The above code just doesn't work. There are no exceptions thrown, even the Msgbox doesn't appear. I would've expected at least the messagebox appearing with nothing in it, but even this doesn't happen! Is there a way to determine if the loaded assembly implements a specific interface. I tried the below but this also doesn't seem to do anything! For Each loadedType As Type In ass.GetTypes If GetType(ICRDataLayer).IsAssignableFrom(loadedType) Then Dim obj1 As Object = ass.CreateInstance(GetType(ICRDataLayer).ToString, True) SQLDataSource = DirectCast(obj1, ICRDataLayer) End If Next EDIT: New code from Vlad's examples: Module CRDataLayerFactory Sub New() End Sub ' class name is a contract, ' should be the same for all plugins Private Function Create() As ICRDataLayer Return New SQLServer() End Function End Module Above is Module in each DLL, converted from Vlad's C# example. Below is my code to bring in the DLL: Dim SQLDataSource As ICRDataLayer Dim ass As Assembly = Assembly. _ LoadFrom("M:\MyProgs\WebService\DynamicAssemblyLoading\SQLServer\bin\Debug\SQLServer.dll") Dim factory As Object = ass.CreateInstance("CRDataLayerFactory", True) Dim t As Type = factory.GetType Dim method As MethodInfo = t.GetMethod("Create") Dim obj As Object = method.Invoke(factory, Nothing) SQLDataSource = DirectCast(obj, ICRDataLayer) EDIT: Implementation based on Paul Kohler's code Dim file As String For Each file In Directory.GetFiles(baseDir, searchPattern, SearchOption.TopDirectoryOnly) Dim assemblyType As System.Type For Each assemblyType In Assembly.LoadFrom(file).GetTypes Dim s As System.Type() = assemblyType.GetInterfaces For Each ty As System.Type In s If ty.Name.Contains("ICRDataLayer") Then MsgBox(ty.Name) plugin = DirectCast(Activator.CreateInstance(assemblyType), ICRDataLayer) MessageBox.Show(plugin.ModuleName) End If Next I get the following error with this code: Unable to cast object of type 'SQLServer.CRDataSource.SQLServer' to type 'DynamicAssemblyLoading.ICRDataLayer'. The actual DLL is in a different project called SQLServer in the same solution as my implementation code. CRDataSource is a namespace and SQLServer is the actual class name of the DLL. The SQLServer class implements ICRDataLayer, so I don't understand why it wouldn't be able to cast it. Is the naming significant here, I wouldn't have thought it would be.

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  • How to install plugins on Eclipse.

    - by Metz
    Hi, i know there already are other questions like this, but i could't find anything useful. And it's becoming such a painful issue.. I was trying to install ObjectAid on Eclipse 3.5.1. So, lets google, http://www.objectaid.com shows up. i added it to the repository list, then checked ObjectAid UML Explorer. It says: Cannot complete the install because one or more required items could not be found. Software being installed: ObjectAid Class Diagram 0.9.86 (com.objectaid.uml.feature.group 0.9.86) Missing requirement: ObjectAid Class Diagram 0.9.86 (com.objectaid.uml.feature.group 0.9.86) requires 'org.eclipse.draw2d 0.0.0' I've had a look into /opt/eclipse/plugins and i've found org.eclipse.draw2d_3.5.2.v20091126-1908, but i coudnt figure out how to install it. The operating system is Ubuntu. Thanks for any help.

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  • Bug with asp.net mvc2, collection and ValidationMessageFor ?

    - by Rafael Mueller
    I'm with a really weird bug with asp.net mvc2 (rtm) and ValidationMessageFor. The example below throws a System.Collections.Generic.KeyNotFoundException on Response.Write(Html.ValidationMessageFor(n = n[index].Name)); Any ideas why thats happening? I'm accessing the same dictionary twice before, but it only throws the error on ValidationMessageFor, any thoughts? Here's the code. public class Parent { public IList<Child> Childrens { get; set; } [Required] public string Name { get; set; } } public class Child { [Required] public string Name { get; set; } } The controller public class ParentController : Controller { public ActionResult Create() { var parent = new Parent { Name = "Parent" }; parent.Childrens = new List<Child> { new Child(), new Child(), new Child() }; return View(parent); } } The view (Create.aspx) <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Parent>" %> <%@ Import Namespace="BugAspNetMVC" %> <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <%Html.EnableClientValidation(); %> <% using (Html.BeginForm()) {%> <%=Html.LabelFor(p => p.Name)%> <%=Html.TextBoxFor(p => p.Name)%> <%=Html.ValidationMessageFor(p => p.Name)%> <%Html.RenderPartial("Childrens", Model.Childrens); %> <%} %> </asp:Content> And the partial view (Childrens.ascx) <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<IList<Child>>" %> <%@ Import Namespace="BugAspNetMVC"%> <% for (int i = 0; i < Model.Count; i++) { var index = i; Response.Write(Html.LabelFor(n => n[index].Name)); Response.Write(Html.TextBoxFor(n => n[index].Name)); Response.Write(Html.ValidationMessageFor(n => n[index].Name)); } %>

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  • Reflect on an ExpandoObject

    - by Water Cooler v2
    I have written a nifty function that will accept a system.object, reflect on its properties and serialize the object into a JSON string. It looks like this: public class JSONSerializer { public string Serialize(object obj) Now, I want to be able to do this to serialize a dynamic/ExpandoObject, but because my serializer uses reflection, it isn't able to do it. What's the workaround? public class Test { public dynamic MakeDynamicCat() { dynamic newCat = new ExpandoObject(); newCat.Name = "Polly"; newCat.Pedigree = new ExpandoObject(); newCat.Pedigree.Breed = "Whatever"; return newCat; } public void SerializeCat() { new JSONSerializer().Serialize(MakeDynamicCat()); } }

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  • JUnit Parameterized Runner and mvn Surefire Report integration

    - by fraido
    I'm using the Junit Parameterized Runner and the Maven Plugin Surefire Report to generate detailed reports during the mvn site phase. I've something like this @RunWith(Parameterized.class) public class MyTest { private String string1; private String string2; @Parameterized.Parameters public static Collection params() { return Arrays.asList(new String[][] { { "1", "2"}, { "3", "4"}, { "5", "6"} }); } public MyTest(String string1, String string2) { this.string1 = string1; this.string2 = string2; } @Test public void myTestMethod() { ... } @Test public void myOtherTestMethod() { ... } The report shows something like myTestMethod[0] 0.018 myTestMethod[1] 0.009 myTestMethod[2] 0.009 ... myOtherTestMethod[0] 0.018 myOtherTestMethod[1] 0.009 myOtherTestMethod[2] 0.009 ... Is there a way to display something else rather than the iteration number [0]..[1]..etc.. The constructor parameters would be a much better information. For example myTestMethod["1", "2"] 0.018 ...

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  • How to implement paging for datagrid using LINQ to Entities in wpf?

    - by Levelbit
    I'm new in wpf. My main problem is to understand how DataGrid works with its datacontext. It would help me a lot because I don't know how to make a universal paging usercontrol for all my datagrids in the projects for different database tables. DataGrid converts received DataContext from object to some kind of list. How it is implemented. I tried to do some casting from object to IQueryable to generalize thinig because base class of every entity in the entity model is EntityObject class. But it doesen't work in runtime although I don't receive complains at design time.

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  • Fluent NHibernate Map Enum as Lookup Table

    - by Jaimal Chohan
    I have the following (simplified) public enum Level { Bronze, Silver, Gold } public class Member { public virtual Level MembershipLevel { get; set; } } public class MemberMap : ClassMap<Member> { Map(x => x.MembershipLevel); } This creates a table with a column called MembershipLevel with the value as the Enum string value. What I want is for the entire Enum to be created as a lookup table, with the Membe table referencing this with the integer value as the FK. Also, I want to do this without bas***izing my model. Any ideas? [And I want time machine] [With 2 cup holders]

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  • ServiceLocator not initialized in Tests project

    - by Carl Bussema
    When attempting to write a test related to my new Tasks (MVC3, S#arp 2.0), I get this error when I try to run the test: MyProject.Tests.MyProject.Tasks.CategoryTasksTests.CanConfirmDeleteReadiness: SetUp : System.NullReferenceException : ServiceLocator has not been initialized; I was trying to retrieve SharpArch.NHibernate.ISessionFactoryKeyProvider ---- System.NullReferenceException : Object reference not set to an instance of an object. at SharpArch.Domain.SafeServiceLocator1.GetService() at SharpArch.NHibernate.SessionFactoryKeyHelper.GetKeyFrom(Object anObject) at SharpArch.NHibernate.NHibernateRepositoryWithTypedId2.get_Session() at SharpArch.NHibernate.NHibernateRepositoryWithTypedId2.Save(T entity) at MyProject.Tests.MyProject.Tasks.CategoryTasksTests.Setup() in C:\code\MyProject\Solutions\MyProject.Tests\MyProject.Tasks\CategoryTasksTests.cs:line 36 --NullReferenceException at Microsoft.Practices.ServiceLocation.ServiceLocator.get_Current() at SharpArch.Domain.SafeServiceLocator1.GetService() Other tests which do not involve the new class (e.g., generate/confirm database mappings) run correctly. My ServiceLocatorInitializer is as follows public class ServiceLocatorInitializer { public static void Init() { IWindsorContainer container = new WindsorContainer(); container.Register( Component .For(typeof(DefaultSessionFactoryKeyProvider)) .ImplementedBy(typeof(DefaultSessionFactoryKeyProvider)) .Named("sessionFactoryKeyProvider")); container.Register( Component .For(typeof(IEntityDuplicateChecker)) .ImplementedBy(typeof(EntityDuplicateChecker)) .Named("entityDuplicateChecker")); ServiceLocator.SetLocatorProvider(() => new WindsorServiceLocator(container)); } }

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  • Play Framework: Error getting sequence nextval using H2 in-memory database

    - by alexhanschke
    As the title suggests, I get an error running Play 2.0.1 Tests using a FakeApplication w/ H2 in memory. I set up a basic unit test: public class ModelTest { @Test public void checkThatIndustriesExist() { running(fakeApplication(inMemoryDatabase()), new Runnable() { public void run() { Industry industry = new Industry(); industry.name = "Some name"; industry.shortname = "some-name"; industry.save(); assertThat(Industry.find.all()).hasSize(1); } }); } Which yields the following exception: [info] test.ModelTest [error] Test test.ModelTest.checkThatIndustriesExist failed: Error getting sequence nextval [error] at com.avaje.ebean.config.dbplatform.SequenceIdGenerator.getMoreIds(SequenceIdGenerator.java:213) [error] at com.avaje.ebean.config.dbplatform.SequenceIdGenerator.loadMoreIds(SequenceIdGenerator.java:163) [error] at com.avaje.ebean.config.dbplatform.SequenceIdGenerator.nextId(SequenceIdGenerator.java:118) [error] at com.avaje.ebeaninternal.server.deploy.BeanDescriptor.nextId(BeanDescriptor.java:1218) [error] at com.avaje.ebeaninternal.server.persist.DefaultPersister.setIdGenValue(DefaultPersister.java:1304) [error] at com.avaje.ebeaninternal.server.persist.DefaultPersister.insert(DefaultPersister.java:403) [error] at com.avaje.ebeaninternal.server.persist.DefaultPersister.saveEnhanced(DefaultPersister.java:345) [error] at com.avaje.ebeaninternal.server.persist.DefaultPersister.saveRecurse(DefaultPersister.java:315) [error] at com.avaje.ebeaninternal.server.persist.DefaultPersister.save(DefaultPersister.java:282) [error] at com.avaje.ebeaninternal.server.core.DefaultServer.save(DefaultServer.java:1577) [error] at com.avaje.ebeaninternal.server.core.DefaultServer.save(DefaultServer.java:1567) [error] at com.avaje.ebean.Ebean.save(Ebean.java:538) [error] at play.db.ebean.Model.save(Model.java:76) [error] at test.ModelTest$1.run(ModelTest.java:24) [error] at play.test.Helpers.running(Helpers.java:277) [error] at test.ModelTest.checkThatIndustriesExist(ModelTest.java:21) [error] ... [error] Caused by: org.h2.jdbc.JdbcSQLException: Syntax Fehler in SQL Befehl "SELECT INDUSTRY_SEQ.NEXTVAL UNION[*] SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL "; erwartet "identifier" [error] Syntax error in SQL statement "SELECT INDUSTRY_SEQ.NEXTVAL UNION[*] SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL "; expected "identifier"; SQL statement: [error] select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval [42001-158] [error] at org.h2.message.DbException.getJdbcSQLException(DbException.java:329) [error] at org.h2.message.DbException.get(DbException.java:169) [error] at org.h2.message.DbException.getSyntaxError(DbException.java:194) [error] at org.h2.command.Parser.readColumnIdentifier(Parser.java:2777) [error] at org.h2.command.Parser.readTermObjectDot(Parser.java:2336) [error] at org.h2.command.Parser.readTerm(Parser.java:2453) [error] at org.h2.command.Parser.readFactor(Parser.java:2035) [error] at org.h2.command.Parser.readSum(Parser.java:2022) [error] at org.h2.command.Parser.readConcat(Parser.java:1995) [error] at org.h2.command.Parser.readCondition(Parser.java:1860) [error] at org.h2.command.Parser.readAnd(Parser.java:1841) [error] at org.h2.command.Parser.readExpression(Parser.java:1833) [error] at org.h2.command.Parser.parseSelectSimpleSelectPart(Parser.java:1746) [error] at org.h2.command.Parser.parseSelectSimple(Parser.java:1778) [error] at org.h2.command.Parser.parseSelectSub(Parser.java:1673) [error] at org.h2.command.Parser.parseSelectUnion(Parser.java:1518) [error] at org.h2.command.Parser.parseSelect(Parser.java:1506) [error] at org.h2.command.Parser.parsePrepared(Parser.java:405) [error] at org.h2.command.Parser.parse(Parser.java:279) [error] at org.h2.command.Parser.parse(Parser.java:251) [error] at org.h2.command.Parser.prepareCommand(Parser.java:217) [error] at org.h2.engine.Session.prepareLocal(Session.java:415) [error] at org.h2.engine.Session.prepareCommand(Session.java:364) [error] at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1119) [error] at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:71) [error] at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:267) [error] at com.jolbox.bonecp.ConnectionHandle.prepareStatement(ConnectionHandle.java:820) [error] at com.avaje.ebean.config.dbplatform.SequenceIdGenerator.getMoreIds(SequenceIdGenerator.java:193) [error] ... 80 more My model looks like this: @Entity @Table(name = "industry") public class Industry extends Model { @Id public Long id; public String name; public String shortname; // called in the view to trigger lazy-loading public String getName() { return name; } public static Finder<Long, Industry> find = new Finder<Long, Industry>(Long.class, Industry.class); } ... and finally the relevant part from my initial evolution: create table industry ( id bigint not null, name varchar(255), shortname varchar(255), constraint pk_industry primary key (id) } create sequence industry_seq start with 1000; Everything works fine running on my PostgreSQL DB, and from my point of view the code is not any different from the Play2.0 Computer Database Sample. I am happy for any help - thanks! Regards, Alex

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  • WCF REST POST error bad request 400

    - by lyatcomit
    Here's my code: DOAMIN: using System; using System.Collections; using System.Runtime.Serialization; namespace Comit.TrafficService.Services.Mobile { [DataContract(Namespace = "http://192.168.0.161:9999/TrafficService/Domain/Mobile")] public class Error { [DataMember] public int Id { get; set; } [DataMember] public DateTime Time { get; set; } public string Message { get; set; } [DataMember] public string Stacktrace { get; set; } [DataMember] public string Os { get; set; } [DataMember] public string Resolution { get; set; } } } CONTRACT: using System.ServiceModel; using System.ServiceModel.Web; using Comit.TrafficService.Services.Mobile; namespace Comit.TrafficService.Services.Contracts { [ServiceContract(Name = "MobileErrorService")] public interface IMobileError { /// <summary> /// ??????????? /// </summary> /// <param name="Error">??????</param> /// <returns></returns> [OperationContract] [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.WrappedResponse, UriTemplate = "ErrorReport", RequestFormat = WebMessageFormat.Xml, ResponseFormat = WebMessageFormat.Xml) ] int ErrorReport(Error error); } } SERVICE: using System.ServiceModel.Web; using Comit.TrafficService.Services.Contracts; using Comit.TrafficService.Dao.Mobile; using System; using Comit.TrafficService.Services.Mobile; namespace Comit.TrafficService.Services { public class MobileErrorService : IMobileError { public int ErrorReport(Error error) { return HandleAdd(error); } public int HandleAdd(Error error) { Console.WriteLine("?????error.Message:" + error.Message); ErrorDao edao = new ErrorDao(); Console.WriteLine("??error" ); int result = (int)edao.Add(error); return result; } } } Configuration: <?xml version="1.0" encoding="utf-8" ?> <configuration> <system.serviceModel> <services> <service name="Comit.TrafficService.Services.MobileErrorService"> <host> <baseAddresses> <add baseAddress="http://192.168.0.161:9999"/> </baseAddresses> </host> <endpoint address="http://192.168.0.161:9999/Comit/TrafficService/Services" binding="webHttpBinding" contract="Comit.TrafficService.Services.Contracts.IMobileError" behaviorConfiguration="RestfulBehavior" name="webHttpBinding"> </endpoint> </service> </services> <behaviors> <endpointBehaviors> <behavior name="RestfulBehavior"> <webHttp/> <dataContractSerializer ignoreExtensionDataObject="true"/> </behavior> </endpointBehaviors> </behaviors> </system.serviceModel> </configuration> Host: using System; using System.Collections.Generic; using System.Linq; using System.ServiceModel; using System.Text; using Comit.TrafficService.Services; namespace ServiceTest { class Program { static void Main(string[] args) { using (ServiceHost host = new ServiceHost(typeof(MobileErrorService))) { host.Opened += delegate { Console.WriteLine("CalculaorService????,????????!"); }; host.Open(); Console.Read(); } } } } Client code: using System; using System.ServiceModel; using System.ServiceModel.Description; using TestWCFRest.WcfServices.Services; using System.Net; namespace TestWCFRest.WcfServices.Hosting { class Program { static void Main(string[] args) { //using (ServiceHost host = new ServiceHost(typeof(CalculatorService))) //{ // host.Opened += delegate // { // Console.WriteLine("CalculaorService????,????????!"); // }; // host.Open(); // Console.Read(); //} HttpWebRequest req = null; HttpWebResponse res = null; try { string url = "http://192.168.0.161:9999/Comit/TrafficService/Services/ErrorReport"; req = (HttpWebRequest)WebRequest.Create(url); req.Method = "POST"; req.ContentType = "application/xml; charset=utf-8"; req.Timeout = 30000; req.Headers.Add("SOAPAction", url); System.Xml.XmlDocument xmlDoc = new System.Xml.XmlDocument(); xmlDoc.XmlResolver = null; xmlDoc.Load(@"d:\test.xml"); string sXML = xmlDoc.InnerXml; req.ContentLength = sXML.Length; System.IO.StreamWriter sw = new System.IO.StreamWriter(req.GetRequestStream()); sw.Write(sXML); sw.Close(); res = (HttpWebResponse)req.GetResponse(); } catch (Exception ex) { System.Console.WriteLine(ex.Message); } } } } It's my first time I'm trying to do somethinf with WCF so I don't know how to solve this problem. Since there is a lot of professionals here, I would appreciate your help in solving this. Thank you in advance!

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  • Set List View Size Android

    - by Sandeep
    Hello , I am using List View in my project where i have used a xml file which is used to create the list item.Then i have used it programmatically in my class which is extended by ListActivity. But the problem is i have to add a button in the bottom of screen which is not related to list view but List view covers all the screen. So,is there any way to add button in bottom with list view in android. My Code is :- import android.app.ListActivity; import android.content.Intent; import android.os.Bundle; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ImageView; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; import android.widget.AdapterView.OnItemClickListener; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.Window; public class Options extends ListActivity { String[] items; @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); requestWindowFeature(Window.FEATURE_RIGHT_ICON); items = getResources().getStringArray(R.array.chantOption_array); setListAdapter(new IconicAdapter()); ListView lv = getListView(); lv.setTextFilterEnabled(true); lv.setBackgroundResource(R.drawable.ichant_logo); setFeatureDrawableResource(Window.FEATURE_RIGHT_ICON, R.drawable.icon_t); lv.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // When clicked, show a toast with the TextView text Toast.makeText(getApplicationContext(), items[position], Toast.LENGTH_SHORT).show(); if ("Gayatri Mantra".equals(items[position].toString())) { int[] timeintervals = { 23900, 24000 }; // startChantActivity(TotalMala_loop,Total_Bead_Loop,BacgroundImage,Icon,Title,BeadsTotalTimeIntervals+totalTimeDurationOfAudio) startChantActivity(2, 108, R.drawable.gayatri, R.raw.gayatri, R.drawable.icon_gayatri, "Gayatri Mantra", timeintervals); } if ("Om Mani Padme Hum".equals(items[position].toString())) { int[] timeintervals = { 5500, 8200, 11100, 13900, 34100, 36700, 39500, 42300, 59300, 62000, 64800, 67600, 124600 }; // startChantActivity(TotalMala_loop,Total_Bead_Loop,BacgroundImage,Icon,Title,BeadsTotalTimeIntervals+totalTimeDurationOfAudio) startChantActivity(2, 108, R.drawable.ommanipadmehum, R.raw.om_mani, R.drawable.icon_padme, "Om Mani Padme Hum", timeintervals); } if ("Sai Ram".equals(items[position].toString())) { // Audio time interval for bead+total time duration of audio int[] timeintervals = { 4800, 7500, 10400, 12600, 15800, 18600, 21600, 24400, 25000 }; // startChantActivity(TotalMala_loop,Total_Bead_Loop,BacgroundImage,Icon,Title,BeadsTotalTimeIntervals+totalTimeDurationOfAudio) startChantActivity(2, 108, R.drawable.sairam, R.raw.sairam, R.drawable.icon_sairam, "Sai Ram", timeintervals); } if ("Aum".equals(items[position].toString())) { // Audio time interval for bead+total time duration of audio int[] timeintervals = { 12850, 13000 }; // startChantActivity(TotalMala_loop,Total_Bead_Loop,BacgroundImage,Icon,Title,BeadsTotalTimeIntervals+totalTimeDurationOfAudio) startChantActivity(2, 108, R.drawable.aum, R.raw.aum, R.drawable.ico_aum, "Aum", timeintervals); } } }); } class IconicAdapter extends ArrayAdapter { IconicAdapter() { super(Options.this, R.layout.list_item, items); } public View getView(int position, View convertView, ViewGroup parent) { LayoutInflater inflater = getLayoutInflater(); View row = inflater.inflate(R.layout.list_item, parent, false); TextView label = (TextView) row.findViewById(R.id.label); label.setText(" "+items[position]); ImageView icon = (ImageView) row.findViewById(R.id.icon); if (items[position].equals("Gayatri Mantra")) { icon.setImageResource(R.drawable.icon_gayatri); } if (items[position].equals("Om Mani Padme Hum")) { icon.setImageResource(R.drawable.icon_padme); } if (items[position].equals("Sai Ram")) { icon.setImageResource(R.drawable.icon_sairam); } if (items[position].equals("Aum")) { icon.setImageResource(R.drawable.ico_aum); } return (row); } } protected void startChantActivity(int mala_loop, int beads_loop, int background, int media, int titleIcon, String title, int[] timeintervals) { Bundle bundle = new Bundle(); bundle.putInt("mala_loop", mala_loop); bundle.putInt("beads_loop", beads_loop); bundle.putInt("background", background); bundle.putInt("media", media); bundle.putInt("titleIcon", titleIcon); bundle.putString("title", title); bundle.putIntArray("intervals", timeintervals); Intent intent = new Intent(this, ChantBliss.class); intent.putExtras(bundle); startActivityForResult(intent, this.getSelectedItemPosition()); } } And Corresponding xml file is: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <ImageView android:id="@+id/icon" android:layout_width="wrap_content" android:paddingLeft="2px" android:paddingRight="2px" android:paddingTop="2px" android:layout_height="wrap_content" /> <TextView android:id="@+id/label" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="22sp" android:textColor="#ff000000" /> </LinearLayout> Thanks in Advance: Sandeep

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  • WPF ListBox not binding to INotifyCollectionChanged or INotifyPropertyChanged Events

    - by Gabe Anzelini
    I have the following test code: private class SomeItem{ public string Title{ get{ return "something"; } } public bool Completed { get { return false; } set { } } } private class SomeCollection : IEnumerable<SomeItem>, INotifyCollectionChanged { private IList<SomeItem> _items = new List<SomeItem>(); public void Add(SomeItem item) { _items.Add(item); CollectionChanged(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset)); } #region IEnumerable<SomeItem> Members public IEnumerator<SomeItem> GetEnumerator() { return _items.GetEnumerator(); } #endregion #region IEnumerable Members System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return _items.GetEnumerator(); } #endregion #region INotifyCollectionChanged Members public event NotifyCollectionChangedEventHandler CollectionChanged; #endregion } private SomeCollection collection = new SomeCollection(); private void Expander_Expanded(object sender, RoutedEventArgs e) { var expander = (Expander) sender; var list = expander.DataContext as ITaskList; var listBox = (ListBox)expander.Content; //list.Tasks.CollectionChanged += CollectionChanged; collection.Add(new SomeItem()); collection.Add(new SomeItem()); listBox.ItemsSource = collection; } and the XAML the outer listbox gets populated on load. when the expander gets expanded i then set the itemssource property of the inner listbox (the reason i do this hear instead of using binding is this operation is quite slow and i only want it to take place if the use chooses to view the items). The inner listbox renders fine, but it doesn't actually subscribe to the CollectionChanged event on the collection. I have tried this with ICollection instead of IEnumerable and adding INotifyPropertyChanged as well as replacing INotifyCollectionChanged with INotifyPropertyChanged. The only way I can actually get this to work is to gut my SomeCollection class and inherit from ObservableCollection. My reasoning for trying to role my own INotifyCollectionChanged instead of using ObservableCollection is because I am wrapping a COM collection in the real code. That collection will notify on add/change/remove and I am trying to convert these to INotify events for WPF. Hope this is clear enough (its late).

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  • ASP.NET TextBox TextChanged event not firing in custom EditorPart

    - by Ben Collins
    This is a classic sort of question, I suppose, but it seems that most people are interested in having the textbox cause a postback. I'm not. I just want the event to fire when a postback occurs. I have created a webpart with a custom editorpart. The editorpart renders with a textbox and a button. Clicking the button causes a dialog to open. When the dialog is closed, it sets the value of the textbox via javascript and then does __doPostBack using the ClientID of the editorpart. The postback happens, but the TextChanged event never fires, and I'm not sure if it's a problem with the way __doPostBack is invoked, or if it's because of the way I'm setting up the event handler, or something else. Here's what I think is the relevant portion of the code from the editorpart: protected override void CreateChildControls() { _txtListUrl = new TextBox(); _txtListUrl.ID = "targetSPList"; _txtListUrl.Style.Add(HtmlTextWriterStyle.Width, "60%"); _txtListUrl.ToolTip = "Select List"; _txtListUrl.CssClass = "ms-input"; _txtListUrl.Attributes.Add("readOnly", "true"); _txtListUrl.Attributes.Add("onChange", "__doPostBack('" + this.ClientID + "', '');"); _txtListUrl.Text = this.ListString; _btnListPicker = new HtmlInputButton(); _btnListPicker.Style.Add(HtmlTextWriterStyle.Width, "60%"); _btnListPicker.Attributes.Add("Title", "Select List"); _btnListPicker.ID = "browseListsSmtButton"; _btnListPicker.Attributes.Add("onClick", "mso_launchListSmtPicker()"); _btnListPicker.Value = "Select List"; this.AddConfigurationOption("News List", "Choose the list that serves as the data source.", new Control[] { _txtListUrl, _btnListPicker }); if (this.ShowViewSelection) { _txtListUrl.TextChanged += new EventHandler(_txtListUrl_TextChanged); _ddlViews = new DropDownList(); _ddlViews.ID = "_ddlViews"; this.AddConfigurationOption("View", _ddlViews); } } protected override void OnPreRender(EventArgs e) { ScriptLink.Register(this.Page, "PickerTreeDialog.js", true); string lastSelectedListId = string.Empty; if (!this.WebId.Equals(Guid.Empty) && !this.ListId.Equals(Guid.Empty)) { lastSelectedListId = SPHttpUtility.EcmaScriptStringLiteralEncode( string.Format("SPList:{0}?SPWeb:{1}:", this.ListId.ToString(), this.WebId.ToString())); } string script = "\r\n var lastSelectedListSmtPickerId = '" + lastSelectedListId + "';" + "\r\n function mso_launchListSmtPicker(){" + "\r\n if (!document.getElementById) return;" + "\r\n" + "\r\n var listTextBox = document.getElementById('" + SPHttpUtility.EcmaScriptStringLiteralEncode(_txtListUrl.ClientID) + "');" + "\r\n if (listTextBox == null) return;" + "\r\n" + "\r\n var serverUrl = '" + SPHttpUtility.EcmaScriptStringLiteralEncode(SPContext.Current.Web.ServerRelativeUrl) + "';" + "\r\n" + "\r\n var callback = function(results) {" + "\r\n if (results == null || results[1] == null || results[2] == null) return;" + "\r\n" + "\r\n lastSelectedListSmtPickerId = results[0];" + "\r\n var listUrl = '';" + "\r\n if (listUrl.substring(listUrl.length-1) != '/') listUrl = listUrl + '/';" + "\r\n if (results[1].charAt(0) == '/') results[1] = results[1].substring(1);" + "\r\n listUrl = listUrl + results[1];" + "\r\n if (listUrl.substring(listUrl.length-1) != '/') listUrl = listUrl + '/';" + "\r\n if (results[2].charAt(0) == '/') results[2] = results[2].substring(1);" + "\r\n listUrl = listUrl + results[2];" + "\r\n listTextBox.value = listUrl;" + "\r\n __doPostBack('" + this.ClientID + "','');" + "\r\n }" + "\r\n LaunchPickerTreeDialog('CbqPickerSelectListTitle','CbqPickerSelectListText','websLists','', serverUrl, lastSelectedListSmtPickerId,'','','/_layouts/images/smt_icon.gif','', callback);" + "\r\n }"; this.Page.ClientScript.RegisterClientScriptBlock(typeof(ListPickerEditorPart), "mso_launchListSmtPicker", script, true); if ((!string.IsNullOrEmpty(_txtListUrl.Text) && _ddlViews.Items.Count == 0) || _listSelectionChanged) { _ddlViews.Items.Clear(); if (!string.IsNullOrEmpty(_txtListUrl.Text)) { using (SPWeb web = SPContext.Current.Site.OpenWeb(this.WebId)) { foreach (SPView view in web.Lists[this.ListId].Views) { _ddlViews.Items.Add(new ListItem(view.Title, view.ID.ToString())); } } _ddlViews.Enabled = _ddlViews.Items.Count > 0; } else { _ddlViews.Enabled = false; } } base.OnPreRender(e); } void _txtListUrl_TextChanged(object sender, EventArgs e) { this.SetPropertiesFromChosenListString(_txtListUrl.Text); _listSelectionChanged = true; } Any ideas? Update: I forgot to mention these methods, which are called above: protected virtual void AddConfigurationOption(string title, Control inputControl) { this.AddConfigurationOption(title, null, inputControl); } protected virtual void AddConfigurationOption(string title, string description, Control inputControl) { this.AddConfigurationOption(title, description, new List<Control>(new Control[] { inputControl })); } protected virtual void AddConfigurationOption(string title, string description, IEnumerable<Control> inputControls) { HtmlGenericControl divSectionHead = new HtmlGenericControl("div"); divSectionHead.Attributes.Add("class", "UserSectionHead"); this.Controls.Add(divSectionHead); HtmlGenericControl labTitle = new HtmlGenericControl("label"); labTitle.InnerHtml = HttpUtility.HtmlEncode(title); divSectionHead.Controls.Add(labTitle); HtmlGenericControl divUserSectionBody = new HtmlGenericControl("div"); divUserSectionBody.Attributes.Add("class", "UserSectionBody"); this.Controls.Add(divUserSectionBody); HtmlGenericControl divUserControlGroup = new HtmlGenericControl("div"); divUserControlGroup.Attributes.Add("class", "UserControlGroup"); divUserSectionBody.Controls.Add(divUserControlGroup); if (!string.IsNullOrEmpty(description)) { HtmlGenericControl spnDescription = new HtmlGenericControl("div"); spnDescription.InnerHtml = HttpUtility.HtmlEncode(description); divUserControlGroup.Controls.Add(spnDescription); } foreach (Control inputControl in inputControls) { divUserControlGroup.Controls.Add(inputControl); } this.Controls.Add(divUserControlGroup); HtmlGenericControl divUserDottedLine = new HtmlGenericControl("div"); divUserDottedLine.Attributes.Add("class", "UserDottedLine"); divUserDottedLine.Style.Add(HtmlTextWriterStyle.Width, "100%"); this.Controls.Add(divUserDottedLine); }

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  • Create a subarray reference in C# (using unsafe ?)

    - by Wam
    Hello there, I'm refactoring a library we currently use, and I'm faced with the following problem. We used to have the following stuff : class Blah { float[][] data; public float[] GetDataReference(int index) { return data[index]; } } For various reasons, I have replaced this jagged array version with a 1 dimensionnal array version, concatenating inner arrays. My question is : how can I still return a reference to a sub array of data ? class Blah { float[] data; int rows; public float[] GetDataReference(int index) { // Return a reference data from offset i to offset j; } } I was thinking that unsafe and pointers stuff may be of use, is it doable ?

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  • How to attach a scroll bar to a canvas in android ?

    - by panzerschreck
    Hello, I am drawing up a grid on a canvas as below, I have not been able to get the scroll bar to appear, I looked around for examples, but none of them give details on drawing scroll bars for custom views. Your help is much appreciated. public class GridActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // i tried to do as in the documentation nothing seems to happen LinearLayout lLayout = new LinearLayout(this); lLayout.addView(new CustomDrawableView(this), new ViewGroup.LayoutParams(800,600)); FrameLayout fLayout = new FrameLayout(this); fLayout.addView(lLayout, new ViewGroup.LayoutParams(800,600)); setContentView(fLayout); } private class GridView extends ScrollView { private ShapeDrawable[] mDrawable; public GridView (Context context) { // some initialization } protected void onDraw(Canvas canvas) { for each i mDrawable[i].draw(canvas) } } }

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  • Spring rejecting bean name, no URL paths specified

    - by richever
    I am trying to register an interceptor using a annotation-driven controller configuration. As far as I can tell, I've done everything correctly but when I try testing the interceptor nothing happens. After looking in the logs I found the following: 2010-04-04 20:06:18,231 DEBUG [main] support.AbstractAutowireCapableBeanFactory (AbstractAutowireCapableBeanFactory.java:452) - Finished creating instance of bean 'org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping#0' 2010-04-04 20:06:18,515 DEBUG [main] handler.AbstractDetectingUrlHandlerMapping (AbstractDetectingUrlHandlerMapping.java:86) - Rejected bean name 'org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping#0': no URL paths identified 2010-04-04 20:06:19,109 DEBUG [main] support.AbstractBeanFactory (AbstractBeanFactory.java:241) - Returning cached instance of singleton bean 'org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping#0' Look at the second line of this log snippet. Is Spring rejecting the DefaultAnnotationHandlerMapping bean? And if so could this be the problem with my interceptor not working? Here is my application context: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd" default-autowire="byName"> <!-- Configures the @Controller programming model --> <mvc:annotation-driven /> <!-- Scan for annotations... --> <context:component-scan base-package=" com.splash.web.controller, com.splash.web.service, com.splash.web.authentication"/> <bean id="authorizedUserInterceptor" class="com.splash.web.handler.AuthorizedUserInterceptor"/> <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"> <property name="interceptors"> <list> <ref bean="authorizedUserInterceptor"/> </list> </property> </bean> Here is my interceptor: package com.splash.web.handler; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.log4j.Logger; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.servlet.handler.HandlerInterceptorAdapter; public class AuthorizedUserInterceptor extends HandlerInterceptorAdapter { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { log.debug(">>> Operation intercepted..."); return true; } } Does anyone see anything wrong with this? What does the error I mentioned above actually mean and could it have any bearing on the interceptor not being called? Thanks!

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  • NHibernate: Collection was modified; enumeration operation may not execute

    - by Daoming Yang
    Hi All, I'm currently struggling with this "Collection was modified; enumeration operation may not execute" issue. I have searched about this error message, and it's all related to the foreach statement. I do have the some foreach statements, but they are just simply representing the data. I did not using any remove or add inside the foreach statement. NOTE: The error randomly happens (about 4-5 times a day). The application is the MVC website. There are about 5 users operate this applications (about 150 orders a day). Could it be some another users modified the collection, and then occur this error? I have log4net setup and the settings can be found here Make sure that the controller has a parameterless public constructor I do have parameterless public constructor in AdminProductController Does anyone know why this happen and how to resolve this issue? A friend (Oskar) mentioned that "Theory: Maybe the problem is that your configuration and session factory is initialized on the first request after application restart. If a second request comes in before the first request is finished, maybe it will also try to initialize and then triggering this problem somehow." Many thanks. Daoming Here is the error message: System.InvalidOperationException Collection was modified; enumeration operation may not execute. System.InvalidOperationException: An error occurred when trying to create a controller of type 'WebController.Controllers.Admin.AdminProductController'. Make sure that the controller has a parameterless public constructor. --- System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. --- NHibernate.MappingException: Could not configure datastore from input stream DomainModel.Entities.Mappings.OrderProductVariant.hbm.xml --- System.InvalidOperationException: Collection was modified; enumeration operation may not execute. at System.Collections.ArrayList.ArrayListEnumeratorSimple.MoveNext() at System.Xml.Schema.XmlSchemaSet.AddSchemaToSet(XmlSchema schema) at System.Xml.Schema.XmlSchemaSet.Add(String targetNamespace, XmlSchema schema) at System.Xml.Schema.XmlSchemaSet.Add(XmlSchema schema) at NHibernate.Cfg.Configuration.LoadMappingDocument(XmlReader hbmReader, String name) at NHibernate.Cfg.Configuration.AddInputStream(Stream xmlInputStream, String name) --- End of inner exception stack trace --- at NHibernate.Cfg.Configuration.LogAndThrow(Exception exception) at NHibernate.Cfg.Configuration.AddInputStream(Stream xmlInputStream, String name) at NHibernate.Cfg.Configuration.AddResource(String path, Assembly assembly) at NHibernate.Cfg.Configuration.AddAssembly(Assembly assembly) at DomainModel.RepositoryBase..ctor() at WebController.Controllers._baseController..ctor() at WebController.Controllers.Admin.AdminProductController..ctor() at System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache) --- End of inner exception stack trace --- at System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache) at System.Activator.CreateInstance(Type type, Boolean nonPublic) at System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType) --- End of inner exception stack trace --- at System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType) at System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext requestContext, String controllerName) at System.Web.Mvc.MvcHandler.ProcessRequestInit(HttpContextBase httpContext, IController& controller, IControllerFactory& factory) at System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) UPDATE CODE: In my Global.asax.cs, I'm doing this: protected void Application_BeginRequest(object sender, EventArgs e) { ManagedWebSessionContext.Bind(HttpContext.Current, SessionManager.SessionFactory.OpenSession()); } protected void Application_EndRequest(object sender, EventArgs e) { ISession session = ManagedWebSessionContext.Unbind(HttpContext.Current, SessionManager.SessionFactory); if (session != null) { try { if (session.Transaction != null && session.Transaction.IsActive) { session.Transaction.Rollback(); } else { session.Flush(); } } finally { session.Close(); } } } In the SessionManager class, I'm doing: public class SessionManager { private readonly ISessionFactory sessionFactory; public static ISessionFactory SessionFactory { get { return Instance.sessionFactory; } } private ISessionFactory GetSessionFactory() { return sessionFactory; } public static SessionManager Instance { get { return NestedSessionManager.sessionManager; } } public static ISession OpenSession() { return Instance.GetSessionFactory().OpenSession(); } public static ISession CurrentSession { get { return Instance.GetSessionFactory().GetCurrentSession(); } } private SessionManager() { Configuration config = new Configuration().Configure(); config.AddAssembly(Assembly.GetExecutingAssembly()); sessionFactory = config.BuildSessionFactory(); } class NestedSessionManager { internal static readonly SessionManager sessionManager = new SessionManager(); } } In the Repository, I'm doing this: public IEnumerable<User> GetAll() { ICriteria criteria = SessionManager.CurrentSession.CreateCriteria(typeof(User)); return criteria.List<User>(); } In the Controller, I'm doing this: public class UserController : _baseController { IUserRoleRepository _userRoleRepository; internal static readonly ILogger log = LogManager.GetLogger(typeof(UserController)); public UserController() { _userRoleRepository = new UserRoleRepository(); } public ActionResult UserList() { var myList = _usersRepository.GetAll(); return View(myList); } }

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  • Repository Pattern and Entity Framework.

    - by vitorcast
    Hi people, I want to make an implementation with repository pattern with ASP.NET MVC 2 and Entity Framework but I have had some issues in the process. First of all, I have 2 entities that has a relationship between them, like Order and Product. When I generate my dbml file it gaves me a class Order with a property that map a "ProductSet" and one class Product with a property that map wich Order that Product relates itself. So I create my Repository pattern like IReporitory with the basic CRUD operations and inside my controllers I implement the ProductRepository or OrderRepository. The problem occurs when I try to create Product and have to assign my Order on it, like ProductOne.Order = _orderRepository.Find(orderId); That operation gave me some strange behavior and I can't find out what is wrong with it. Thanks for the help.

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  • DataContractSerializer case-insensitive datamember bug

    - by Andrew Bullock
    Here is my class: [DataContract] public class EventIndex : IExtensibleDataObject { public ExtensionDataObject ExtensionData { get; set; } [DataMember] private readonly IList<EventDescription> events; public IEnumerable<EventDescription> Events { get { return events; } } public EventIndex() { events = new List<EventDescription>(); } } As you can see, events is marked as a member. When I try and deserialize one of these classes, ReadObject throws a NullReferenceException. After a morning spent inside reflector, it turns out that its trying to deserialize the events collection into the Events getter. If I rename one of the members (events\ Events) I don't have an issue. Is there a way to make this work properly, without renaming workarounds or other such nonsense?

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