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PONHibernate LINQ queries with nested .Any() conditions
 

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  1. PONHibernate LINQ queries with nested .Any() conditions
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    <p>Here are what my classes look like:</p> <pre><code>class User { IList&lt;UserRedemptionCode&gt; UserRedemptions; } class UserRedemptionCode { string Code; } class Course { IList&lt;CourseRedemptionCode&gt; CourseRedemptions; } class CourseRedemptionCode { string Code; string SomeData; } </code></pre> <p>I want to retrieve all of the courses that match a redemption code that is associated with a user. Here is the current IQuerable call I am making:</p> <pre><code>IQueryable&lt;Course&gt; query = Courses.Where( course =&gt; course.CourseRedemptions.Any( cr =&gt; user.UserRedemptions.Any(rc =&gt; cr.Code == rc.Code)); </code></pre> <p>However, this doesn't seem to work with NHibernate. I get this exception:</p> <pre><code>System.NotSupportedExceptionSpecified method is not supported. at NHibernate.Hql.Ast.ANTLR.PolymorphicQuerySourceDetector.GetClassName(IASTNode querySource) at NHibernate.Hql.Ast.ANTLR.PolymorphicQuerySourceDetector.Process(IASTNode tree) at NHibernate.Hql.Ast.ANTLR.AstPolymorphicProcessor.Process() at NHibernate.Hql.Ast.ANTLR.ASTQueryTranslatorFactory.CreateQueryTranslators(IASTNode ast, String queryIdentifier, String collectionRole, Boolean shallow, IDictionary`2 filters, ISessionFactoryImplementor factory) at NHibernate.Hql.Ast.ANTLR.ASTQueryTranslatorFactory.CreateQueryTranslators(String queryIdentifier, IQueryExpression queryExpression, String collectionRole, Boolean shallow, IDictionary`2 filters, ISessionFactoryImplementor factory) at NHibernate.Engine.Query.QueryPlanCache.GetHQLQueryPlan(IQueryExpression queryExpression, Boolean shallow, IDictionary`2 enabledFilters) at NHibernate.Impl.AbstractSessionImpl.GetHQLQueryPlan(IQueryExpression queryExpression, Boolean shallow) at NHibernate.Impl.AbstractSessionImpl.CreateQuery(IQueryExpression queryExpression) at NHibernate.Linq.DefaultQueryProvider.PrepareQuery(Expression expression, IQuery&amp; query, NhLinqExpression&amp; nhQuery) at NHibernate.Linq.DefaultQueryProvider.Execute(Expression expression) at NHibernate.Linq.DefaultQueryProvider.Execute[TResult](Expression expression) at Remotion.Linq.QueryableBase`1.GetEnumerator() at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) at System.Web.Http.Filters.EnumerableEvaluatorFilter.Convert[T](Object input) at System.Web.Http.Filters.EnumerableEvaluatorFilter.OnActionExecuted(HttpActionExecutedContext actionExecutedContext) at System.Web.Http.Filters.ActionFilterAttribute.CallOnActionExecuted(HttpActionContext actionContext, HttpResponseMessage response, Exception exception) at System.Web.Http.Filters.ActionFilterAttribute.&lt;&gt;c__DisplayClass4.&lt;System.Web.Http.Filters.IActionFilter.ExecuteActionFilterAsync&gt;b__2(HttpResponseMessage response) at System.Threading.Tasks.TaskHelpersExtensions.&lt;&gt;c__DisplayClass2e`2.&lt;Then&gt;b__2d(Task`1 t) at System.Threading.Tasks.TaskHelpersExtensions.ThenImpl[TTask,TOuterResult](TTask task, Func`2 continuation, CancellationToken cancellationToken) </code></pre> <p>There is also another issue, in this query I get back a list of courses, but I also need the CourseRedemptionCode associated with the user so I can get SomeData.</p> <p>Any ideas? Is there another way to do this query?</p>
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    1. USDiego Mijelshon
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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