Fetch with GroupBy throws NullReferenceException

Description

that query:

results into NullReferenceException
bei NHibernate.Linq.Visitors.ResultOperatorProcessors.ProcessFetch.Process(FetchRequestBase resultOperator, QueryModelVisitor queryModelVisitor, IntermediateHqlTree tree) in d:\Projects\NHibernateCore\src\NHibernate\Linq\Visitors\ResultOperatorProcessors\ProcessFetch.cs:Zeile 11.
bei NHibernate.Linq.Visitors.ResultOperatorProcessors.ProcessFetchOne.Process(FetchOneRequest resultOperator, QueryModelVisitor queryModelVisitor, IntermediateHqlTree tree) in d:\Projects\NHibernateCore\src\NHibernate\Linq\Visitors\ResultOperatorProcessors\ProcessFetchOne.cs:Zeile 9.
bei NHibernate.Linq.Visitors.ResultOperatorProcessors.ResultOperatorProcessor`1.Process(ResultOperatorBase resultOperator, QueryModelVisitor queryModel, IntermediateHqlTree tree) in d:\Projects\NHibernateCore\src\NHibernate\Linq\Visitors\ResultOperatorProcessors\ResultOperatorProcessor.cs:Zeile 17.
bei NHibernate.Linq.Visitors.ResultOperatorProcessors.ResultOperatorMap.Process(ResultOperatorBase resultOperator, QueryModelVisitor queryModel, IntermediateHqlTree tree) in d:\Projects\NHibernateCore\src\NHibernate\Linq\Visitors\ResultOperatorProcessors\ResultOperatorMap.cs:Zeile 24.
bei NHibernate.Linq.Visitors.QueryModelVisitor.VisitResultOperator(ResultOperatorBase resultOperator, QueryModel queryModel, Int32 index) in d:\Projects\NHibernateCore\src\NHibernate\Linq\Visitors\QueryModelVisitor.cs:Zeile 216.
bei NHibernate.Linq.Visitors.QueryModelVisitor.VisitMainFromClause(MainFromClause fromClause, QueryModel queryModel) in d:\Projects\NHibernateCore\src\NHibernate\Linq\Visitors\QueryModelVisitor.cs:Zeile 138.
bei Remotion.Linq.Clauses.MainFromClause.Accept(IQueryModelVisitor visitor, QueryModel queryModel) in c:\build\Remotion\working\Relinq\Core\Clauses\MainFromClause.cs:Zeile 62.
bei Remotion.Linq.QueryModelVisitorBase.VisitQueryModel(QueryModel queryModel) in c:\build\Remotion\working\Relinq\Core\QueryModelVisitorBase.cs:Zeile 41.
bei NHibernate.Linq.Visitors.QueryModelVisitor.Visit() in d:\Projects\NHibernateCore\src\NHibernate\Linq\Visitors\QueryModelVisitor.cs:Zeile 122.
bei NHibernate.Linq.Visitors.QueryModelVisitor.GenerateHqlQuery(QueryModel queryModel, VisitorParameters parameters, Boolean root) in d:\Projects\NHibernateCore\src\NHibernate\Linq\Visitors\QueryModelVisitor.cs:Zeile 68.
bei NHibernate.Linq.NhLinqExpression.Translate(ISessionFactoryImplementor sessionFactory, Boolean filter) in d:\Projects\NHibernateCore\src\NHibernate\Linq\NhLinqExpression.cs:Zeile 67.
bei NHibernate.Hql.Ast.ANTLR.ASTQueryTranslatorFactory.CreateQueryTranslators(IQueryExpression queryExpression, String collectionRole, Boolean shallow, IDictionary`2 filters, ISessionFactoryImplementor factory) in d:\Projects\NHibernateCore\src\NHibernate\Hql\Ast\ANTLR\ASTQueryTranslatorFactory.cs:Zeile 24.
bei NHibernate.Engine.Query.QueryExpressionPlan.CreateTranslators(IQueryExpression queryExpression, String collectionRole, Boolean shallow, IDictionary`2 enabledFilters, ISessionFactoryImplementor factory) in d:\Projects\NHibernateCore\src\NHibernate\Engine\Query\QueryExpressionPlan.cs:Zeile 32.
bei NHibernate.Engine.Query.QueryExpressionPlan..ctor(IQueryExpression queryExpression, Boolean shallow, IDictionary`2 enabledFilters, ISessionFactoryImplementor factory) in d:\Projects\NHibernateCore\src\NHibernate\Engine\Query\QueryExpressionPlan.cs:Zeile 13.
bei NHibernate.Engine.Query.QueryPlanCache.GetHQLQueryPlan(IQueryExpression queryExpression, Boolean shallow, IDictionary`2 enabledFilters) in d:\Projects\NHibernateCore\src\NHibernate\Engine\Query\QueryPlanCache.cs:Zeile 67.
bei NHibernate.Impl.AbstractSessionImpl.GetHQLQueryPlan(IQueryExpression queryExpression, Boolean shallow) in d:\Projects\NHibernateCore\src\NHibernate\Impl\AbstractSessionImpl.cs:Zeile 412.
bei NHibernate.Impl.AbstractSessionImpl.CreateQuery(IQueryExpression queryExpression) in d:\Projects\NHibernateCore\src\NHibernate\Impl\AbstractSessionImpl.cs:Zeile 372.
bei NHibernate.Linq.DefaultQueryProvider.PrepareQuery(Expression expression, IQuery& query, NhLinqExpression& nhQuery) in d:\Projects\NHibernateCore\src\NHibernate\Linq\DefaultQueryProvider.cs:Zeile 73.
bei NHibernate.Linq.DefaultQueryProvider.Execute(Expression expression) in d:\Projects\NHibernateCore\src\NHibernate\Linq\DefaultQueryProvider.cs:Zeile 39.
bei NHibernate.Linq.DefaultQueryProvider.Execute[TResult](Expression expression) in d:\Projects\NHibernateCore\src\NHibernate\Linq\DefaultQueryProvider.cs:Zeile 46.
bei Remotion.Linq.QueryableBase`1.GetEnumerator() in c:\build\Remotion\working\Relinq\Core\QueryableBase.cs:Zeile 132.
bei System.Linq.Buffer`1..ctor(IEnumerable`1 source)
bei System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)

Environment

None

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is related to

NH-3075

NullReferenceException when using Fetch/FetchMany

Activity

Alex Zaytsev

May 1, 2017 at 3:42 AM

Closing issues resolved in 4.1.0

Kai Cissarek

February 17, 2015 at 9:02 AM

Pull Request: https://github.com/nhibernate/nhibernate-core/pull/398

Kai Cissarek

February 17, 2015 at 8:03 AM

Yes, of course. No more errors found, all unittests passed. I will prepare a pull request.

Ricardo Peres

February 16, 2015 at 1:35 PM

Can you confirm it is working? And, if so, are you willing to submit a pull request?

Kai Cissarek

February 13, 2015 at 8:18 AM

Hooray! adding FetchOneRequest & FetchManyRequest to FlattenableResultOperators seems to work thank u! I will test it and reply my result.

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Fixed

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Assignee

Alex Zaytsev

Reporter

Kai Cissarek

Priority

Trivial

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Created December 3, 2014 at 11:53 AM

Updated May 1, 2017 at 3:42 AM

Resolved September 4, 2015 at 1:42 PM

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Fetch with GroupBy throws NullReferenceException

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