Query: Translate correlation predicate on Owned collection during sub…

…query translation Resolves #18519
dotnet · Oct 23, 2019 · 21db42a · 21db42a
1 parent 5a0b029
commit 21db42a
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Showing 4 changed files with 18 additions and 13 deletions.
diff --git a/src/EFCore.Relational/Query/RelationalQueryableMethodTranslatingExpressionVisitor.cs b/src/EFCore.Relational/Query/RelationalQueryableMethodTranslatingExpressionVisitor.cs
@@ -1085,20 +1085,23 @@ private Expression Expand(Expression source, MemberIdentity member)
                 var foreignKey = navigation.ForeignKey;
                 if (navigation.IsCollection())
                 {
-                    var innerSelectExpression = _sqlExpressionFactory.Select(targetEntityType);
-                    var innerShapedQuery = CreateShapedQueryExpression(targetEntityType, innerSelectExpression);
+                    var innerShapedQuery = CreateShapedQueryExpression(
+                        targetEntityType, _sqlExpressionFactory.Select(targetEntityType));
 
                     var makeNullable = foreignKey.PrincipalKey.Properties
                         .Concat(foreignKey.Properties)
                         .Select(p => p.ClrType)
                         .Any(t => t.IsNullableType());
 
+                    var innerSequenceType = innerShapedQuery.Type.TryGetSequenceType();
+                    var correlationPredicateParameter = Expression.Parameter(innerSequenceType);
+
                     var outerKey = entityShaperExpression.CreateKeyAccessExpression(
                         navigation.IsDependentToPrincipal()
                             ? foreignKey.Properties
                             : foreignKey.PrincipalKey.Properties,
                         makeNullable);
-                    var innerKey = innerShapedQuery.ShaperExpression.CreateKeyAccessExpression(
+                    var innerKey = correlationPredicateParameter.CreateKeyAccessExpression(
                         navigation.IsDependentToPrincipal()
                             ? foreignKey.PrincipalKey.Properties
                             : foreignKey.Properties,
@@ -1114,10 +1117,12 @@ private Expression Expand(Expression source, MemberIdentity member)
                             Expression.Equal(outerKey, innerKey))
                         : Expression.Equal(outerKey, innerKey);
 
-                    var correlationPredicate = _sqlTranslator.Translate(predicate);
-                    innerSelectExpression.ApplyPredicate(correlationPredicate);
+                    var correlationPredicate = Expression.Lambda(predicate, correlationPredicateParameter);
 
-                    return innerShapedQuery;
+                    return Expression.Call(
+                        QueryableMethods.Where.MakeGenericMethod(innerSequenceType),
+                        innerShapedQuery,
+                        Expression.Quote(correlationPredicate));
                 }
 
                 var entityProjectionExpression = (EntityProjectionExpression)

diff --git a/src/EFCore/Query/EntityShaperExpression.cs b/src/EFCore/Query/EntityShaperExpression.cs
@@ -22,7 +22,7 @@ public EntityShaperExpression(IEntityType entityType, Expression valueBufferExpr
 
         protected override Expression VisitChildren(ExpressionVisitor visitor)
         {
-            var valueBufferExpression = (ProjectionBindingExpression)visitor.Visit(ValueBufferExpression);
+            var valueBufferExpression = visitor.Visit(ValueBufferExpression);
 
             return Update(valueBufferExpression);
         }

diff --git a/test/EFCore.InMemory.FunctionalTests/Query/ComplexNavigationsWeakQueryInMemoryTest.cs b/test/EFCore.InMemory.FunctionalTests/Query/ComplexNavigationsWeakQueryInMemoryTest.cs
@@ -47,5 +47,11 @@ public override Task Optional_navigation_propagates_nullability_to_manually_crea
         {
             return base.Optional_navigation_propagates_nullability_to_manually_created_left_join2(isAsync);
         }
+
+        [ConditionalTheory(Skip = "issue #17620")]
+        public override Task Lift_projection_mapping_when_pushing_down_subquery(bool isAsync)
+        {
+            return base.Lift_projection_mapping_when_pushing_down_subquery(isAsync);
+        }
     }
 }
diff --git a/test/EFCore.Specification.Tests/Query/ComplexNavigationsWeakQueryTestBase.cs b/test/EFCore.Specification.Tests/Query/ComplexNavigationsWeakQueryTestBase.cs
@@ -178,11 +178,5 @@ public override Task Include_inside_subquery(bool isAsync)
         {
             return base.Include_inside_subquery(isAsync);
         }
-
-        [ConditionalTheory(Skip = "Issue#18519")]
-        public override Task Lift_projection_mapping_when_pushing_down_subquery(bool isAsync)
-        {
-            return base.Lift_projection_mapping_when_pushing_down_subquery(isAsync);
-        }
     }
 }