Я пытаюсь выполнить запрос HQL с помощью NHibernate. Когда я пытаюсь выполнить запрос, он выдает исключение, и я не могу понять, в чем проблема.Как использовать IList с запросом HQL и NHibernate?
Запрос по HQL.
public class UsuarioDAO : ImplementacaoPersist<Usuario>{
public IList<Usuario> findByText(string text) {
ISession _session = BDConnect.openSession();
IList<Usuario> list = (IList<Usuario>)_session.CreateQuery("from Usuario u WHERE u.nome LIKE :nome OR u.login LIKE :login")
.SetParameter("nome", "%" + text + "%")
.SetParameter("login", "%" + text + "%");
return list;
}
}
исключение
System.Transactions Critical: 0 : <TraceRecord xmlns="http://schemas.microsoft.com/2004/10/E2ETraceEvent/TraceRecord" Severity="Critical"><TraceIdentifier>http://msdn.microsoft.com/TraceCodes/System/ActivityTracing/2004/07/Reliability/Exception/Unhandled</TraceIdentifier><Description>Unhandled exception</Description><AppDomain>ControleUsuarios.vshost.exe</AppDomain><Exception><ExceptionType>System.InvalidCastException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType><Message>Unable to cast object of type 'NHibernate.Impl.QueryImpl' to type 'System.Collections.Generic.IList`1[ControleUsuarios.Domain.Usuario]'.</Message><StackTrace> at ControleUsuarios.Implementacao.UsuarioDAO.findByText(String text) in c:\Users\fernando\Documents\Visual Studio 2012\Projects\ControleUsuarios\ControleUsuarios\Implementacao\UsuarioDAO.cs:line 18
at ControleUsuarios.Form1.txtSearch_KeyUp(Object sender, KeyEventArgs e) in c:\Users\fernando\Documents\Visual Studio 2012\Projects\ControleUsuarios\ControleUsuarios\Form1.cs:line 80
at System.Windows.Forms.Control.OnKeyUp(KeyEventArgs e)
at System.Windows.Forms.Control.ProcessKeyEventArgs(Message&amp; m)
at System.Windows.Forms.Control.ProcessKeyMessage(Message&amp; m)
at System.Windows.Forms.Control.WmKeyChar(Message&amp; m)
at System.Windows.Forms.Control.WndProc(Message&amp; m)
at System.Windows.Forms.TextBoxBase.WndProc(Message&amp; m)
at System.Windows.Forms.TextBox.WndProc(Message&amp; m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message&amp; m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message&amp; m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG&amp; msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at ControleUsuarios.Program.Main() in c:\Users\fernando\Documents\Visual Studio 2012\Projects\ControleUsuarios\ControleUsuarios\Program.cs:line 16
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()</StackTrace><ExceptionString>System.InvalidCastException: Unable to cast object of type 'NHibernate.Impl.QueryImpl' to type 'System.Collections.Generic.IList`1[ControleUsuarios.Domain.Usuario]'.
at ControleUsuarios.Implementacao.UsuarioDAO.findByText(String text) in c:\Users\fernando\Documents\Visual Studio 2012\Projects\ControleUsuarios\ControleUsuarios\Implementacao\UsuarioDAO.cs:line 18
at ControleUsuarios.Form1.txtSearch_KeyUp(Object sender, KeyEventArgs e) in c:\Users\fernando\Documents\Visual Studio 2012\Projects\ControleUsuarios\ControleUsuarios\Form1.cs:line 80
at System.Windows.Forms.Control.OnKeyUp(KeyEventArgs e)
at System.Windows.Forms.Control.ProcessKeyEventArgs(Message&amp; m)
at System.Windows.Forms.Control.ProcessKeyMessage(Message&amp; m)
at System.Windows.Forms.Control.WmKeyChar(Message&amp; m)
at System.Windows.Forms.Control.WndProc(Message&amp; m)
at System.Windows.Forms.TextBoxBase.WndProc(Message&amp; m)
at System.Windows.Forms.TextBox.WndProc(Message&amp; m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message&amp; m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message&amp; m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG&amp; msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at ControleUsuarios.Program.Main() in c:\Users\fernando\Documents\Visual Studio 2012\Projects\ControleUsuarios\ControleUsuarios\Program.cs:line 16
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()</ExceptionString></Exception></TraceRecord>
The program '[2584] ControleUsuarios.vshost.exe: Program Trace' has exited with code 0 (0x0).
The program '[2584] ControleUsuarios.vshost.exe: Managed (v4.0.30319)' has exited with code -1 (0xffffffff).
В моем запросе нет ToList, только ToString, вы знаете, почему? – FernandoPaiva
Потому что это 'List'. Типо из-за моей привычки использовать Linq в наши дни. Просто проверьте документ, который я связал, все написано. Это часто бывает быстрее, чем ждать ответа на сайте Q & A для базовых опечаток. –
Perfect. Теперь это работает. Большое спасибо.! – FernandoPaiva