Как включить $ expand и $ select в ODataQueryOptions?

Question

Вопрос начат here, где я не могу позвонить $select или $expand по телефону results.

Дано:

  var results = options.ApplyTo(_uow.Repository<ContentType>() 
       .Query() 
       .Get() 
       .Include(u => u.User) 
       .Where(u => u.UserId == userId) 
       .OrderBy(o => o.Description)).Cast<ContentType>() 
       .Select(x => new ContentTypeDTO() 
       { 
        //projection goes here 
        ContentTypeId = x.ContentTypeId, 
        Description = x.Description, 
        UserDTO = new UserDTO 
        { 
         UserId = x.UserId, 
         UserName = x.User.UserName 
        } 
       }); 

Исключение:

Невозможно бросить тип «System.Web.Http.OData.Query.Expressions.SelectExpandBinder + SelectSome`1 [[Project.DAL .Data.Models.ContentType, Project.DAL.Data, Version = 1.0.0.0, Culture = neutral, PublicKeyToken = null]] 'для ввода' Project.DAL.Data.Models.ContentType '. LINQ к Entities поддерживает только литье EDM примитивные или перечисления типов.»

на основе this solution, я понимаю, что когда $select или $expand применяются к результату, это уже не ContentType, как ожидается в Cast<ContentType>(). Это решение использует HierarchyNodeExpressionVisitor, который я не смог найти.

Я хочу использовать «options.ApplyTo()», как я хочу, чтобы фильтрация выполняется на сервере БД, чтобы гарантировать, что я не вернусь накачанной набор данных с сотнями тысяч строк.

Есть ли способ обойти это?

- ОБНОВЛЕНИЕ -

При использовании @Schandlich «ы предлагаемое решение ниже, операция все еще терпит неудачу с Ok переопределение:

Locals:

+  this {Project.AdminWebsite.Api.Controllers.ContentTypeController} Project.AdminWebsite.Api.Controllers.ODataBaseController {Project.AdminWebsite.Api.Controllers.ContentTypeController} 
+  content {System.Data.Entity.Infrastructure.DbQuery<Project.Core.UI.Models.ContentTypeDTO>} object {System.Data.Entity.Infrastructure.DbQuery<Project.Core.UI.Models.ContentTypeDTO>} 
+  type {Name = "DbQuery`1" FullName = "System.Data.Entity.Infrastructure.DbQuery`1[[Project.Core.UI.Models.ContentTypeDTO, Project.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]"} System.Type {System.RuntimeType} 
+  resultType {Name = "OkNegotiatedContentResult`1" FullName = "System.Web.Http.Results.OkNegotiatedContentResult`1[[System.Data.Entity.Infrastructure.DbQuery`1[[Project.Core.UI.Models.ContentTypeDTO, Project.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]"} System.Type {System.RuntimeType} 
+  result {System.Web.Http.Results.OkNegotiatedContentResult<System.Data.Entity.Infrastructure.DbQuery<Project.Core.UI.Models.ContentTypeDTO>>} System.Web.Http.IHttpActionResult {System.Web.Http.Results.OkNegotiatedContentResult<System.Data.Entity.Infrastructure.DbQuery<Project.Core.UI.Models.ContentTypeDTO>>} 

Стол вызовов:

> Project.AdminWebsite.dll!Project.AdminWebsite.Api.Controllers.ODataBaseController.Ok(object content, System.Type type) Line 27 C# 
    Project.AdminWebsite.dll!Project.AdminWebsite.Api.Controllers.ContentTypeController.Get(System.Web.Http.OData.Query.ODataQueryOptions<Project.DAL.Data.Models.ContentType> odataQueryOptions) Line 132 C# 
    [Lightweight Function] 
    System.Web.Http.dll!System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.GetExecutor.AnonymousMethod__9(object instance, object[] methodParameters) Unknown 
    System.Web.Http.dll!System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.Execute(object instance, object[] arguments) Unknown 
    System.Web.Http.dll!System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(System.Web.Http.Controllers.HttpControllerContext controllerContext, System.Collections.Generic.IDictionary<string,object> arguments, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.Tracers.HttpActionDescriptorTracer.ExecuteAsync.AnonymousMethod__1() Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.ITraceWriterExtensions.TraceBeginEndAsync<object>(System.Web.Http.Tracing.ITraceWriter traceWriter, System.Net.Http.HttpRequestMessage request, string category, System.Web.Http.Tracing.TraceLevel level, string operatorName, string operationName, System.Action<System.Web.Http.Tracing.TraceRecord> beginTrace, System.Func<System.Threading.Tasks.Task<object>> execute, System.Action<System.Web.Http.Tracing.TraceRecord,object> endTrace, System.Action<System.Web.Http.Tracing.TraceRecord> errorTrace) Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.Tracers.HttpActionDescriptorTracer.ExecuteAsync(System.Web.Http.Controllers.HttpControllerContext controllerContext, System.Collections.Generic.IDictionary<string,object> arguments, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.Controllers.ApiControllerActionInvoker.InvokeActionAsyncCore() Unknown 
    mscorlib.dll!System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start<System.Web.Http.Controllers.ApiControllerActionInvoker.InvokeActionAsyncCore>(ref System.Web.Http.Controllers.ApiControllerActionInvoker.InvokeActionAsyncCore stateMachine) Unknown 
    mscorlib.dll!System.Runtime.CompilerServices.AsyncTaskMethodBuilder<System.__Canon>.Start<System.Web.Http.Controllers.ApiControllerActionInvoker.InvokeActionAsyncCore>(ref System.Web.Http.Controllers.ApiControllerActionInvoker.InvokeActionAsyncCore stateMachine) Unknown 
    System.Web.Http.dll!System.Web.Http.Controllers.ApiControllerActionInvoker.InvokeActionAsyncCore(System.Web.Http.Controllers.HttpActionContext actionContext, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.Controllers.ApiControllerActionInvoker.InvokeActionAsync(System.Web.Http.Controllers.HttpActionContext actionContext, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.Tracers.HttpActionInvokerTracer.System.Web.Http.Controllers.IHttpActionInvoker.InvokeActionAsync.AnonymousMethod__1() Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.ITraceWriterExtensions.TraceBeginEndAsync<System.Net.Http.HttpResponseMessage>(System.Web.Http.Tracing.ITraceWriter traceWriter, System.Net.Http.HttpRequestMessage request, string category, System.Web.Http.Tracing.TraceLevel level, string operatorName, string operationName, System.Action<System.Web.Http.Tracing.TraceRecord> beginTrace, System.Func<System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage>> execute, System.Action<System.Web.Http.Tracing.TraceRecord,System.Net.Http.HttpResponseMessage> endTrace, System.Action<System.Web.Http.Tracing.TraceRecord> errorTrace) Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.Tracers.HttpActionInvokerTracer.System.Web.Http.Controllers.IHttpActionInvoker.InvokeActionAsync(System.Web.Http.Controllers.HttpActionContext actionContext, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.Controllers.ActionFilterResult.ActionInvoker.InvokeActionAsync() Unknown 
    System.Web.Http.dll!System.Web.Http.Controllers.ActionFilterResult.ExecuteAsync() Unknown 
    mscorlib.dll!System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start<System.Web.Http.Controllers.ActionFilterResult.ExecuteAsync>(ref System.Web.Http.Controllers.ActionFilterResult.ExecuteAsync stateMachine) Unknown 
    mscorlib.dll!System.Runtime.CompilerServices.AsyncTaskMethodBuilder<System.__Canon>.Start<System.Web.Http.Controllers.ActionFilterResult.ExecuteAsync>(ref System.Web.Http.Controllers.ActionFilterResult.ExecuteAsync stateMachine) Unknown 
    System.Web.Http.dll!System.Web.Http.Controllers.ActionFilterResult.ExecuteAsync(System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.ApiController.ExecuteAsync(System.Web.Http.Controllers.HttpControllerContext controllerContext, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.Tracers.HttpControllerTracer.ExecuteAsyncCore() Unknown 
    mscorlib.dll!System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start<System.Web.Http.Tracing.Tracers.HttpControllerTracer.ExecuteAsyncCore>(ref System.Web.Http.Tracing.Tracers.HttpControllerTracer.ExecuteAsyncCore stateMachine) Unknown 
    mscorlib.dll!System.Runtime.CompilerServices.AsyncTaskMethodBuilder<System.__Canon>.Start<System.Web.Http.Tracing.Tracers.HttpControllerTracer.ExecuteAsyncCore>(ref System.Web.Http.Tracing.Tracers.HttpControllerTracer.ExecuteAsyncCore stateMachine) Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.Tracers.HttpControllerTracer.ExecuteAsyncCore(System.Web.Http.Controllers.HttpControllerContext controllerContext, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.Tracers.HttpControllerTracer.System.Web.Http.Controllers.IHttpController.ExecuteAsync.AnonymousMethod__0() Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.ITraceWriterExtensions.TraceBeginEndAsync<System.Net.Http.HttpResponseMessage>(System.Web.Http.Tracing.ITraceWriter traceWriter, System.Net.Http.HttpRequestMessage request, string category, System.Web.Http.Tracing.TraceLevel level, string operatorName, string operationName, System.Action<System.Web.Http.Tracing.TraceRecord> beginTrace, System.Func<System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage>> execute, System.Action<System.Web.Http.Tracing.TraceRecord,System.Net.Http.HttpResponseMessage> endTrace, System.Action<System.Web.Http.Tracing.TraceRecord> errorTrace) Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.Tracers.HttpControllerTracer.System.Web.Http.Controllers.IHttpController.ExecuteAsync(System.Web.Http.Controllers.HttpControllerContext controllerContext, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsyncCore(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsync() Unknown 
    mscorlib.dll!System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start<System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsync>(ref System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsync stateMachine) Unknown 
    mscorlib.dll!System.Runtime.CompilerServices.AsyncTaskMethodBuilder<System.__Canon>.Start<System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsync>(ref System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsync stateMachine) Unknown 
    System.Web.Http.dll!System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsync(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Net.Http.dll!System.Net.Http.HttpMessageInvoker.SendAsync(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.Dispatcher.HttpRoutingDispatcher.SendAsync(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Net.Http.dll!System.Net.Http.DelegatingHandler.SendAsync(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.Tracers.RequestMessageHandlerTracer.AnonymousMethod__FabricatedMethod6() Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.Tracers.RequestMessageHandlerTracer.SendAsync.AnonymousMethod__1() Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.ITraceWriterExtensions.TraceBeginEndAsync<System.Net.Http.HttpResponseMessage>(System.Web.Http.Tracing.ITraceWriter traceWriter, System.Net.Http.HttpRequestMessage request, string category, System.Web.Http.Tracing.TraceLevel level, string operatorName, string operationName, System.Action<System.Web.Http.Tracing.TraceRecord> beginTrace, System.Func<System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage>> execute, System.Action<System.Web.Http.Tracing.TraceRecord,System.Net.Http.HttpResponseMessage> endTrace, System.Action<System.Web.Http.Tracing.TraceRecord> errorTrace) Unknown 
    System.Web.Http.dll!System.Web.Http.Tracing.Tracers.RequestMessageHandlerTracer.SendAsync(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Net.Http.dll!System.Net.Http.DelegatingHandler.SendAsync(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.dll!System.Web.Http.HttpServer.AnonymousMethod__FabricatedMethod9() Unknown 
    System.Web.Http.dll!System.Web.Http.HttpServer.SendAsync() Unknown 
    mscorlib.dll!System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start<System.Web.Http.HttpServer.SendAsync>(ref System.Web.Http.HttpServer.SendAsync stateMachine) Unknown 
    mscorlib.dll!System.Runtime.CompilerServices.AsyncTaskMethodBuilder<System.__Canon>.Start<System.Web.Http.HttpServer.SendAsync>(ref System.Web.Http.HttpServer.SendAsync stateMachine) Unknown 
    System.Web.Http.dll!System.Web.Http.HttpServer.SendAsync(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Net.Http.dll!System.Net.Http.HttpMessageInvoker.SendAsync(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) Unknown 
    System.Web.Http.WebHost.dll!System.Web.Http.WebHost.HttpControllerHandler.ProcessRequestAsyncCore() Unknown 
    mscorlib.dll!System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start<System.Web.Http.WebHost.HttpControllerHandler.ProcessRequestAsyncCore>(ref System.Web.Http.WebHost.HttpControllerHandler.ProcessRequestAsyncCore stateMachine) Unknown 
    mscorlib.dll!System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start<System.Web.Http.WebHost.HttpControllerHandler.ProcessRequestAsyncCore>(ref System.Web.Http.WebHost.HttpControllerHandler.ProcessRequestAsyncCore stateMachine) Unknown 
    System.Web.Http.WebHost.dll!System.Web.Http.WebHost.HttpControllerHandler.ProcessRequestAsyncCore(System.Web.HttpContextBase contextBase) Unknown 
    System.Web.Http.WebHost.dll!System.Web.Http.WebHost.HttpControllerHandler.ProcessRequestAsync(System.Web.HttpContext context) Unknown 
    System.Web.dll!System.Web.HttpTaskAsyncHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest.AnonymousMethod__0() Unknown 
    System.Web.dll!System.Web.TaskAsyncHelper.BeginTask(System.Func<System.Threading.Tasks.Task> taskFunc, System.AsyncCallback callback, object state) Unknown 
    System.Web.dll!System.Web.HttpTaskAsyncHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(System.Web.HttpContext context, System.AsyncCallback cb, object extraData) Unknown 
    System.Web.dll!System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() Unknown 
    System.Web.dll!System.Web.HttpApplication.ExecuteStep(System.Web.HttpApplication.IExecutionStep step, ref bool completedSynchronously) Unknown 
    System.Web.dll!System.Web.HttpApplication.PipelineStepManager.ResumeSteps(System.Exception error) Unknown 
    System.Web.dll!System.Web.HttpApplication.BeginProcessRequestNotification(System.Web.HttpContext context, System.AsyncCallback cb) Unknown 
    System.Web.dll!System.Web.HttpRuntime.ProcessRequestNotificationPrivate(System.Web.Hosting.IIS7WorkerRequest wr, System.Web.HttpContext context) Unknown 
    System.Web.dll!System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(System.IntPtr rootedObjectsPointer, System.IntPtr nativeRequestContext, System.IntPtr moduleData, int flags) Unknown 
    System.Web.dll!System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(System.IntPtr rootedObjectsPointer, System.IntPtr nativeRequestContext, System.IntPtr moduleData, int flags) Unknown 
    [Native to Managed Transition] 
    [Managed to Native Transition] 
    System.Web.dll!System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(System.IntPtr rootedObjectsPointer, System.IntPtr nativeRequestContext, System.IntPtr moduleData, int flags) Unknown 
    System.Web.dll!System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(System.IntPtr rootedObjectsPointer, System.IntPtr nativeRequestContext, System.IntPtr moduleData, int flags) Unknown 
    [AppDomain Transition] 

Сообщение об ошибке:

Unable to cast the type 'System.Web.Http.OData.Query.Expressions.SelectExpandBinder+SelectAll`1[[Project.DAL.Data.Models.ContentType, Project.DAL.Data, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]' to type 'Project.DAL.Data.Models.ContentType'. LINQ to Entities only supports casting EDM primitive or enumeration types. 

Answer 1

От $select and $expand break ODataQueryOptions -- how to fix?

public IHttpActionResult Get(ODataQueryOptions<YourEntity> odataQueryOptions) 
{ 
    //Your applyTo logic and results. 

    if (odataQueryOptions.SelectExpand != null) 
    { 
     Request.SetSelectExpandClause(odataQueryOptions.SelectExpand.SelectExpandClause); 
    } 

    return Ok(results, results.GetType()); 
} 

private IHttpActionResult Ok(object content, Type type) 
{ 
    Type resultType = typeof(OkNegotiatedContentResult<>).MakeGenericType(type); 
    return Activator.CreateInstance(resultType, content, this) as IHttpActionResult; 
} 

Но, как я уже говорил в другой Ваш вопрос, продолжать искать пути, чтобы избежать ручного применения результатов, если вы можете.