我们正在使用。net Core 3.1, Microsoft。EntityFrameworkCore 3.1.9, Npgsql 4.1.9和linq2db。EntityFrameworkCore 3.7.0 .
我们有以下2个脚手架类:
[Table("testrunconfig", Schema = "fit")]
public partial class Testrunconfig
{
public Testrunconfig()
{
Testruntestgrp = new HashSet<Testruntestgrp>();
}
[Key]
[Column("id")]
public int Id { get; set; }
[InverseProperty("Testrunconfig")]
public virtual ICollection<Testruntestgrp> Testruntestgrp { get; set; }
}
[Table("testruntestgrp", Schema = "fit")]
public partial class Testruntestgrp
{
[Key]
[Column("id")]
public int Id { get; set; }
[ForeignKey(nameof(TestrunconfigId))]
[InverseProperty("Testruntestgrp")]
public virtual Testrunconfig Testrunconfig { get; set; }
}
当我尝试执行以下查询时…
var testName = "MyTestName"
var test = _fitDbContext.Testrunconfig
.Include(x => x.Testruntestgrp)
.Where(x => x.Testruntestgrp.Select(y => y.Testname).Contains("MyTestName"))
.Take(10)
.ToListAsyncLinqToDB()
.Result;
…这个异常被抛出:
Exception thrown: 'LinqToDB.Linq.LinqException' in linq2db.dll
Exception thrown: 'LinqToDB.Linq.LinqException' in linq2db.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker: Information: Executed action MyProject.Web.Controllers.TestExecutions.TestExecutionsController.IndexAlternate (MyProject.Web) in 7928.1909ms
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Microsoft.AspNetCore.Routing.EndpointMiddleware: Information: Executed endpoint 'MyProject.Web.Controllers.TestExecutions.TestExecutionsController.IndexAlternate (MyProject.Web)'
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
Exception thrown: 'System.AggregateException' in System.Private.CoreLib.dll
'iisexpress.exe' (CoreCLR: clrhost): Loaded 'C:Program FilesdotnetsharedMicrosoft.NETCore.App3.1.32System.Diagnostics.StackTrace.dll'.
'iisexpress.exe' (CoreCLR: clrhost): Loaded 'C:Program FilesdotnetsharedMicrosoft.NETCore.App3.1.32System.Reflection.Metadata.dll'.
'iisexpress.exe' (CoreCLR: clrhost): Loaded 'C:Program FilesdotnetsharedMicrosoft.NETCore.App3.1.32System.IO.MemoryMappedFiles.dll'.
Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware: Error: An unhandled exception has occurred while executing the request.
System.AggregateException: One or more errors occurred. (One or more errors occurred. ('x.Testruntestgrp.Select(y => y.Testname).Contains(value(MyProject.Service.TestExecutionsService+<>c__DisplayClass3_0).testName)' cannot be converted to SQL.))
---> System.AggregateException: One or more errors occurred. ('x.Testruntestgrp.Select(y => y.Testname).Contains(value(MyProject.Service.TestExecutionsService+<>c__DisplayClass3_0).testName)' cannot be converted to SQL.)
---> LinqToDB.Linq.LinqException: 'x.Testruntestgrp.Select(y => y.Testname).Contains(value(MyProject.Service.TestExecutionsService+<>c__DisplayClass3_0).testName)' cannot be converted to SQL.
at LinqToDB.Linq.Builder.ExpressionBuilder.ConvertInPredicate(IBuildContext context, MethodCallExpression expression)
at LinqToDB.Linq.Builder.ExpressionBuilder.ConvertPredicate(IBuildContext context, Expression expression)
at LinqToDB.Linq.Builder.ExpressionBuilder.BuildSearchCondition(IBuildContext context, Expression expression, List`1 conditions, Boolean isNotExpression)
at LinqToDB.Linq.Builder.ExpressionBuilder.BuildWhere(IBuildContext parent, IBuildContext sequence, LambdaExpression condition, Boolean checkForSubQuery, Boolean enforceHaving)
at LinqToDB.Linq.Builder.WhereBuilder.BuildMethodCall(ExpressionBuilder builder, MethodCallExpression methodCall, BuildInfo buildInfo)
at LinqToDB.Linq.Builder.MethodCallBuilder.BuildSequence(ExpressionBuilder builder, BuildInfo buildInfo)
at LinqToDB.Linq.Builder.ExpressionBuilder.BuildSequence(BuildInfo buildInfo)
at LinqToDB.Linq.Builder.TakeSkipBuilder.BuildMethodCall(ExpressionBuilder builder, MethodCallExpression methodCall, BuildInfo buildInfo)
at LinqToDB.Linq.Builder.MethodCallBuilder.BuildSequence(ExpressionBuilder builder, BuildInfo buildInfo)
at LinqToDB.Linq.Builder.ExpressionBuilder.BuildSequence(BuildInfo buildInfo)
at LinqToDB.Linq.Builder.ExpressionBuilder.Build[T]()
at LinqToDB.Linq.Query`1.CreateQuery(IDataContext dataContext, Expression expr)
at LinqToDB.Linq.Query`1.GetQuery(IDataContext dataContext, Expression& expr)
at LinqToDB.Linq.ExpressionQuery`1.GetQuery(Expression& expression, Boolean cache)
at LinqToDB.Linq.ExpressionQuery`1.LinqToDB.Async.IQueryProviderAsync.ExecuteAsyncEnumerable[TResult](Expression expression, CancellationToken cancellationToken)
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at System.Threading.Tasks.Task`1.get_Result()
at LinqToDB.EntityFrameworkCore.Internal.LinqToDBForEFQueryProvider`1.GetAsyncEnumerator(CancellationToken cancellationToken)
at System.Runtime.CompilerServices.ConfiguredCancelableAsyncEnumerable`1.GetAsyncEnumerator()
at Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ToListAsync[TSource](IQueryable`1 source, CancellationToken cancellationToken)
at LinqToDB.AsyncExtensions.ToListAsync[TSource](IQueryable`1 source, CancellationToken token)
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at System.Threading.Tasks.Task`1.get_Result()
at MyProject.Service.TestExecutionsService.GetTestBisectedExecutions(String configuration, Int32 maxTransitions, String testName, String svnRevision) in E:MyDevCheckoutsDevFolderMyProject_trunkMyProject.ServiceTestExecutionsService.cs:line 56
at MyProject.Web.Controllers.TestExecutions.TestExecutionsController.IndexAlternate(BisectExecutionsGuiModel model) in E:MyDevCheckoutsDevFolderMyProject_trunkMyProject.webControllersTestExecutionsTestExecutionsController.cs:line 98
at lambda_method(Closure , Object , Object[] )
at Microsoft.Extensions.Internal.ObjectMethodExecutor.Execute(Object target, Object[] parameters)
at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.SyncActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeActionMethodAsync()
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeNextActionFilterAsync()
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeInnerFilterAsync()
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResourceFilter>g__Awaited|24_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeFilterPipelineAsync()
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Logged|17_1(ResourceInvoker invoker)
at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Session.SessionMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Session.SessionMiddleware.Invoke(HttpContext context)
at DevExpress.AspNetCore.Internal.BinaryStorageMiddleware.Invoke(HttpContext httpContext)
at DevExpress.AspNetCore.Internal.ResourceManagerMiddleware.Invoke(HttpContext httpContext)
at Microsoft.AspNetCore.Localization.RequestLocalizationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)
Exception thrown: 'System.NotImplementedException' in System.Private.CoreLib.dll
Exception thrown: 'System.NotImplementedException' in System.Private.CoreLib.dll
我做错了什么?这似乎是一个基本的用例。它可以在EF Core 3.1中使用。
不支持此过滤器构造。尝试将其更改为Any。也不要将async和sync混合。
var test = _fitDbContext.Testrunconfig
.Include(x => x.Testruntestgrp)
.Where(x => x.Testruntestgrp.Any(y => y.Testname == "MyTestName")
.Take(10)
.ToLinqToDB()
.ToList()