Skip to content

Query translation exception #306

Open

Description

@letarak

DO 7.0

\\ OK
_ = Query.All<Entity>()
  .Select(it => Storage.All<Entity>()
      .Select(e => e.NullableDateTime ?? DateTime.MinValue)
      .FirstOrDefault())
  .ToArray();

\\ OK
_ = Query.All<Entity>()
  .Select(it => (Storage.All<Entity>()
      .Select(e => e.NullableDateTime)
      .FirstOrDefault() ?? DateTime.MinValue)
      .Date)
  .ToArray();

\\ FAIL
_ = Query.All<Entity>()
  .Select(it => Storage.All<Entity>()
      .Select(e => e.NullableDateTime)
      .FirstOrDefault()
      .Value
      .Date)
  .ToArray();

\\ FAIL
_ = Query.All<Entity>()
  .Select(it => Storage.All<Entity>()
      .Select(e => e.NullableDateTime ?? DateTime.MinValue)
      .FirstOrDefault()
      .Date)
  .ToArray();

\\ FAIL
_ = Query.All<Entity>()
  .Select(it => Storage.All<Entity>()
      .Select(e => e.NullableDateTime.Value)
      .FirstOrDefault()
      .Date)
  .ToArray();

Activity

  1. alex-kulakov commented on Mar 9, 2023

    @alex-kulakov
    Contributor

    Hello @letarak, do they fail with some exception?

  2. self-assigned this
    on Mar 9, 2023
  3. letarak commented on Mar 12, 2023

    @letarak
    Author

    Unable to translate 'Query.All().Select(it => Query.All().Select(e => e.LastLoginTime.Value).FirstOrDefault().Date)' expression. See inner exception for details.

    Object reference not set to an instance of an object.

     at Xtensive.Orm.Linq.Expressions.MarkerExpression..ctor(Expression target, MarkerType markerType) in /_/Orm/Xtensive.Orm/Orm/Linq/Expressions/MarkerExpression.cs:line 28
       at Xtensive.Orm.Linq.Translator.GetMember(Expression expression, MemberInfo member, Expression sourceExpression) in /_/Orm/Xtensive.Orm/Orm/Linq/Translator.Expressions.cs:line 1410
       at Xtensive.Orm.Linq.Translator.VisitMemberAccess(MemberExpression ma) in /_/Orm/Xtensive.Orm/Orm/Linq/Translator.Expressions.cs:line 380
       at Xtensive.Linq.ExpressionVisitor`1.Visit(Expression e) in /_/Orm/Xtensive.Orm/Linq/ExpressionVisitor{TResult}.cs:line 125
       at Xtensive.Orm.Linq.Translator.VisitLambda(LambdaExpression le) in /_/Orm/Xtensive.Orm/Orm/Linq/Translator.Expressions.cs:line 145
       at Xtensive.Orm.Linq.Translator.BuildProjection(LambdaExpression le) in /_/Orm/Xtensive.Orm/Orm/Linq/Translator.Queryable.cs:line 1367
       at Xtensive.Orm.Linq.Translator.VisitSelect(Expression expression, LambdaExpression le) in /_/Orm/Xtensive.Orm/Orm/Linq/Translator.Queryable.cs:line 1355
       at Xtensive.Orm.Linq.Translator.VisitQueryableMethod(MethodCallExpression mc, QueryableMethodKind methodKind) in /_/Orm/Xtensive.Orm/Orm/Linq/Translator.Queryable.cs:line 230
       at Xtensive.Linq.QueryableVisitor.VisitMethodCall(MethodCallExpression mc) in /_/Orm/Xtensive.Orm/Linq/QueryableVisitor.cs:line 33
       at Xtensive.Orm.Linq.Translator.VisitMethodCall(MethodCallExpression mc) in /_/Orm/Xtensive.Orm/Orm/Linq/Translator.Expressions.cs:line 519
       at Xtensive.Linq.ExpressionVisitor`1.Visit(Expression e) in /_/Orm/Xtensive.Orm/Linq/ExpressionVisitor{TResult}.cs:line 125
       at Xtensive.Orm.Linq.Translator.Translate() in /_/Orm/Xtensive.Orm/Orm/Linq/Translator.Materialization.cs:line 32
       at Xtensive.Orm.Linq.QueryProvider.Translate(Expression expression, CompilerConfiguration compilerConfiguration) in /_/Orm/Xtensive.Orm/Orm/Linq/QueryProvider.cs:line 168
    
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

Labels

No labels
No labels

Type

No type

Projects

No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions