[release/8.0] Handle complex types in GetDatabaseValues

src/EFCore/ChangeTracking/Internal/ArrayPropertyValues.cs

@@ -2,6 +2,7 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using Microsoft.EntityFrameworkCore.Metadata.Internal;
+using Microsoft.EntityFrameworkCore.Query.Internal;
 
 namespace Microsoft.EntityFrameworkCore.ChangeTracking.Internal;
 
@@ -99,7 +100,7 @@ public override void SetValues(PropertyValues propertyValues)
 
         for (var i = 0; i < _values.Length; i++)
         {
-            SetValue(i, propertyValues[Properties[i].Name]);
+            SetValue(i, EntityMaterializerSource.UseOldBehavior32701 ? propertyValues[Properties[i].Name] : propertyValues[Properties[i]]);
         }
     }
 
@@ -110,7 +111,9 @@ public override void SetValues(PropertyValues propertyValues)
     ///     doing so can result in application failures when updating to a new Entity Framework Core release.
     /// </summary>
     public override IReadOnlyList<IProperty> Properties
-        => _properties ??= EntityType.GetProperties().ToList();
+        => _properties ??= EntityMaterializerSource.UseOldBehavior32701
+            ? EntityType.GetProperties().ToList()
+            : EntityType.GetFlattenedProperties().ToList();
 
     /// <summary>
     ///     This is an internal API that supports the Entity Framework Core infrastructure and not subject to

src/EFCore/ChangeTracking/Internal/EntryPropertyValues.cs

@@ -2,6 +2,7 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using Microsoft.EntityFrameworkCore.Metadata.Internal;
+using Microsoft.EntityFrameworkCore.Query.Internal;
 
 namespace Microsoft.EntityFrameworkCore.ChangeTracking.Internal;
 
@@ -94,7 +95,8 @@ public override void SetValues(PropertyValues propertyValues)
 
         foreach (var property in Properties)
         {
-            SetValueInternal(property, propertyValues[property.Name]);
+            SetValueInternal(
+                property, EntityMaterializerSource.UseOldBehavior32701 ? propertyValues[property.Name] : propertyValues[property]);
         }
     }
 
@@ -107,7 +109,9 @@ public override void SetValues(PropertyValues propertyValues)
     public override IReadOnlyList<IProperty> Properties
     {
         [DebuggerStepThrough]
-        get => _properties ??= EntityType.GetProperties().ToList();
+        get => _properties ??= EntityMaterializerSource.UseOldBehavior32701
+            ? EntityType.GetProperties().ToList()
+            : EntityType.GetFlattenedProperties().ToList();
     }
 
     /// <summary>

src/EFCore/Internal/EntityFinder.cs

@@ -3,6 +3,7 @@
 
 using System.Collections;
 using Microsoft.EntityFrameworkCore.ChangeTracking.Internal;
+using Microsoft.EntityFrameworkCore.Query.Internal;
 
 namespace Microsoft.EntityFrameworkCore.Internal;
 
@@ -859,17 +860,53 @@ private static Expression<Func<object, object[]>> BuildProjection(IEntityType en
         var entityParameter = Expression.Parameter(typeof(object), "e");
 
         var projections = new List<Expression>();
-        foreach (var property in entityType.GetProperties())
+
+        if (EntityMaterializerSource.UseOldBehavior32701)
         {
-            projections.Add(
-                Expression.Convert(
+            foreach (var property in entityType.GetProperties())
+            {
+                projections.Add(
                     Expression.Convert(
-                        Expression.Call(
-                            EF.PropertyMethod.MakeGenericMethod(property.ClrType),
-                            entityParameter,
-                            Expression.Constant(property.Name, typeof(string))),
-                        property.ClrType),
-                    typeof(object)));
+                        Expression.Convert(
+                            Expression.Call(
+                                EF.PropertyMethod.MakeGenericMethod(property.ClrType),
+                                entityParameter,
+                                Expression.Constant(property.Name, typeof(string))),
+                            property.ClrType),
+                        typeof(object)));
+            }
+        }
+        else
+        {
+            foreach (var property in entityType.GetFlattenedProperties())
+            {
+                var path = new List<IPropertyBase> { property };
+                while (path[^1].DeclaringType is IComplexType complexType)
+                {
+                    path.Add(complexType.ComplexProperty);
+                }
+
+                Expression instanceExpression = entityParameter;
+                for (var i = path.Count - 1; i >= 0; i--)
+                {
+                    instanceExpression = Expression.Call(
+                        EF.PropertyMethod.MakeGenericMethod(path[i].ClrType),
+                        instanceExpression,
+                        Expression.Constant(path[i].Name, typeof(string)));
+
+                    if (i != 0 && instanceExpression.Type.IsValueType)
+                    {
+                        instanceExpression = Expression.Convert(instanceExpression, typeof(object));
+                    }
+                }
+
+                projections.Add(
+                    Expression.Convert(
+                        Expression.Convert(
+                            instanceExpression,
+                            property.ClrType),
+                        typeof(object)));
+            }
         }
 
         return Expression.Lambda<Func<object, object[]>>(

src/EFCore/Metadata/Internal/EntityTypeExtensions.cs

@@ -4,6 +4,8 @@
 // ReSharper disable ArgumentsStyleOther
 // ReSharper disable ArgumentsStyleNamedExpression
 
+using Microsoft.EntityFrameworkCore.Query.Internal;
+
 namespace Microsoft.EntityFrameworkCore.Metadata.Internal;
 
 /// <summary>
@@ -309,7 +311,9 @@ public static IProperty CheckPropertyBelongsToType(
     {
         Check.NotNull(property, nameof(property));
 
-        if ((property.DeclaringType as IEntityType)?.IsAssignableFrom(entityType) != true)
+        if ((EntityMaterializerSource.UseOldBehavior32701
+                && (property.DeclaringType as IEntityType)?.IsAssignableFrom(entityType) != true)
+            || !property.DeclaringType.ContainingEntityType.IsAssignableFrom(entityType))
         {
             throw new InvalidOperationException(
                 CoreStrings.PropertyDoesNotBelong(property.Name, property.DeclaringType.DisplayName(), entityType.DisplayName()));

src/EFCore/Query/Internal/EntityMaterializerSource.cs

@@ -24,6 +24,9 @@ public class EntityMaterializerSource : IEntityMaterializerSource
     public static readonly bool UseOldBehavior31866 =
         AppContext.TryGetSwitch("Microsoft.EntityFrameworkCore.Issue31866", out var enabled31866) && enabled31866;
 
+    internal static readonly bool UseOldBehavior32701 =
+        AppContext.TryGetSwitch("Microsoft.EntityFrameworkCore.Issue32701", out var enabled32701) && enabled32701;
+
     private static readonly MethodInfo InjectableServiceInjectedMethod
         = typeof(IInjectableService).GetMethod(nameof(IInjectableService.Injected))!;
 
@@ -117,15 +120,16 @@ public Expression CreateMaterializeExpression(
 
         var constructorExpression = constructorBinding.CreateConstructorExpression(bindingInfo);
 
-        if (_materializationInterceptor == null)
+        if (_materializationInterceptor == null
+            // TODO: This currently applies the materialization interceptor only on the root structural type - any contained complex types
+            // don't get intercepted.
+            || (structuralType is not IEntityType && !UseOldBehavior32701))
         {
             return properties.Count == 0 && blockExpressions.Count == 0
                 ? constructorExpression
                 : CreateMaterializeExpression(blockExpressions, instanceVariable, constructorExpression, properties, bindingInfo);
         }
 
-        // TODO: This currently applies the materialization interceptor only on the root structural type - any contained complex types
-        // don't get intercepted.
         return CreateInterceptionMaterializeExpression(
             structuralType,
             properties,

test/EFCore.InMemory.FunctionalTests/PropertyValuesInMemoryTest.cs

@@ -3,19 +3,47 @@
 
 namespace Microsoft.EntityFrameworkCore;
 
-public class PropertyValuesInMemoryTest : PropertyValuesTestBase<PropertyValuesInMemoryTest.PropertyValuesInMemoryFixture>
+public class PropertyValuesInMemoryTest(PropertyValuesInMemoryTest.PropertyValuesInMemoryFixture fixture)
+    : PropertyValuesTestBase<PropertyValuesInMemoryTest.PropertyValuesInMemoryFixture>(fixture)
 {
-    public PropertyValuesInMemoryTest(PropertyValuesInMemoryFixture fixture)
-        : base(fixture)
-    {
-    }
+    public override Task Complex_current_values_can_be_accessed_as_a_property_dictionary_using_IProperty()
+        => Assert.ThrowsAsync<NullReferenceException>( // In-memory database cannot query complex types
+            () => base.Complex_current_values_can_be_accessed_as_a_property_dictionary_using_IProperty());
+
+    public override Task Complex_original_values_can_be_accessed_as_a_property_dictionary_using_IProperty()
+        => Assert.ThrowsAsync<NullReferenceException>( // In-memory database cannot query complex types
+            () => base.Complex_original_values_can_be_accessed_as_a_property_dictionary_using_IProperty());
+
+    public override Task Complex_store_values_can_be_accessed_as_a_property_dictionary_using_IProperty()
+        => Assert.ThrowsAsync<NullReferenceException>( // In-memory database cannot query complex types
+            () => base.Complex_store_values_can_be_accessed_as_a_property_dictionary_using_IProperty());
+
+    public override Task Complex_store_values_can_be_accessed_asynchronously_as_a_property_dictionary_using_IProperty()
+        => Assert.ThrowsAsync<NullReferenceException>( // In-memory database cannot query complex types
+            () => base.Complex_store_values_can_be_accessed_asynchronously_as_a_property_dictionary_using_IProperty());
 
     public class PropertyValuesInMemoryFixture : PropertyValuesFixtureBase
     {
         public override DbContextOptionsBuilder AddOptions(DbContextOptionsBuilder builder)
-            => base.AddOptions(builder).EnableSensitiveDataLogging(false);
+            => base.AddOptions(builder)
+                .ConfigureWarnings(w => w.Ignore(CoreEventId.MappedComplexPropertyIgnoredWarning))
+                .EnableSensitiveDataLogging(false);
 
         protected override ITestStoreFactory TestStoreFactory
             => InMemoryTestStoreFactory.Instance;
+
+        protected override void OnModelCreating(ModelBuilder modelBuilder, DbContext context)
+        {
+            base.OnModelCreating(modelBuilder, context);
+
+            // In-memory database doesn't support complex type queries
+            modelBuilder.Entity<Building>(
+                b =>
+                {
+                    b.Ignore(e => e.Culture);
+                    b.Ignore(e => e.Milk);
+                });
+
+        }
     }
 }