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AndriySvyrydAndriySvyryd
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Improve the relationship cycle breaking logic to detect cycles even when not starting on one.
Additionally, detect multiple relationship chains that end with incompatible conversions. Fixes #32422
1 parent 5a4ffe6 commit 9ac31c2

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9 files changed

+199
-90
lines changed

9 files changed

+199
-90
lines changed

‎src/EFCore/Metadata/Internal/EntityType.cs‎

Lines changed: 0 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -2,7 +2,6 @@
22
// The .NET Foundation licenses this file to you under the MIT license.
33

44
using System.Diagnostics.CodeAnalysis;
5-
using System.Runtime.CompilerServices;
65
using Microsoft.EntityFrameworkCore.ChangeTracking.Internal;
76
using Microsoft.EntityFrameworkCore.Internal;
87

‎src/EFCore/Metadata/Internal/InternalForeignKeyBuilder.cs‎

Lines changed: 5 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -3677,7 +3677,11 @@ private bool CanSetRelatedTypes(
36773677
&& (((navigationToPrincipal != null)
36783678
&& (navigationToPrincipal.Value.Name == Metadata.PrincipalToDependent?.Name))
36793679
|| ((navigationToDependent != null)
3680-
&& (navigationToDependent.Value.Name == Metadata.DependentToPrincipal?.Name)));
3680+
&& (navigationToDependent.Value.Name == Metadata.DependentToPrincipal?.Name))
3681+
|| ((navigationToPrincipal == null)
3682+
&& (navigationToDependent == null)
3683+
&& principalEntityType == Metadata.DeclaringEntityType
3684+
&& dependentEntityType == Metadata.PrincipalEntityType));
36813685

36823686
var someAspectsFitNonInverted = false;
36833687
if (!sameHierarchyInvertedNavigations

‎src/EFCore/Metadata/Internal/Property.cs‎

Lines changed: 102 additions & 77 deletions
Original file line numberDiff line numberDiff line change
@@ -4,6 +4,7 @@
44
using System.Diagnostics.CodeAnalysis;
55
using System.Globalization;
66
using Microsoft.EntityFrameworkCore.ChangeTracking.Internal;
7+
using Microsoft.EntityFrameworkCore.Infrastructure;
78
using Microsoft.EntityFrameworkCore.Internal;
89
using Microsoft.EntityFrameworkCore.Storage.Json;
910

@@ -767,53 +768,10 @@ private object? DefaultSentinel
767768
public virtual ValueConverter? GetValueConverter()
768769
{
769770
var annotation = FindAnnotation(CoreAnnotationNames.ValueConverter);
770-
if (annotation != null)
771-
{
772-
return (ValueConverter?)annotation.Value;
773-
}
774-
775-
var property = this;
776-
var i = 0;
777-
for (; i < ForeignKey.LongestFkChainAllowedLength; i++)
778-
{
779-
Property? nextProperty = null;
780-
foreach (var foreignKey in property.GetContainingForeignKeys())
781-
{
782-
for (var propertyIndex = 0; propertyIndex < foreignKey.Properties.Count; propertyIndex++)
783-
{
784-
if (property == foreignKey.Properties[propertyIndex])
785-
{
786-
var principalProperty = foreignKey.PrincipalKey.Properties[propertyIndex];
787-
if (principalProperty == this
788-
|| principalProperty == property)
789-
{
790-
break;
791-
}
792-
793-
annotation = principalProperty.FindAnnotation(CoreAnnotationNames.ValueConverter);
794-
if (annotation != null)
795-
{
796-
return (ValueConverter?)annotation.Value;
797-
}
798-
799-
nextProperty = principalProperty;
800-
}
801-
}
802-
}
803-
804-
if (nextProperty == null)
805-
{
806-
break;
807-
}
808-
809-
property = nextProperty;
810-
}
811-
812-
return i == ForeignKey.LongestFkChainAllowedLength
813-
? throw new InvalidOperationException(
814-
CoreStrings.RelationshipCycle(
815-
DeclaringType.DisplayName(), Name, "ValueConverter"))
816-
: null;
771+
return annotation != null
772+
? (ValueConverter?)annotation.Value
773+
: GetConversion(throwOnProviderClrTypeConflict: FindAnnotation(CoreAnnotationNames.ProviderClrType) == null)
774+
.ValueConverter;
817775
}
818776

819777
/// <summary>
@@ -859,53 +817,120 @@ private object? DefaultSentinel
859817
public virtual Type? GetProviderClrType()
860818
{
861819
var annotation = FindAnnotation(CoreAnnotationNames.ProviderClrType);
862-
if (annotation != null)
863-
{
864-
return (Type?)annotation.Value;
865-
}
820+
return annotation != null
821+
? (Type?)annotation.Value
822+
: GetConversion(throwOnValueConverterConflict: FindAnnotation(CoreAnnotationNames.ValueConverter) == null)
823+
.ProviderClrType;
824+
}
825+
826+
private (ValueConverter? ValueConverter, Type? ProviderClrType) GetConversion(
827+
bool throwOnValueConverterConflict = true, bool throwOnProviderClrTypeConflict = true)
828+
{
829+
var queue = new Queue<(Property CurrentProperty, Property CycleBreakingPropert, int CyclePosition, int MaxCycleLength)>();
830+
queue.Enqueue((this, this, 0, 2));
866831

867-
var property = this;
868-
var i = 0;
869-
for (; i < ForeignKey.LongestFkChainAllowedLength; i++)
832+
ValueConverter? valueConverter = null;
833+
Type? providerClrType = null;
834+
while (queue.Count > 0)
870835
{
871-
Property? nextProperty = null;
836+
var (property, cycleBreakingProperty, cyclePosition, maxCycleLength) = queue.Dequeue();
837+
if (cyclePosition >= ForeignKey.LongestFkChainAllowedLength)
838+
{
839+
throw new InvalidOperationException(
840+
CoreStrings.RelationshipCycle(DeclaringType.DisplayName(), Name, "ValueConverter"));
841+
}
842+
872843
foreach (var foreignKey in property.GetContainingForeignKeys())
873844
{
874845
for (var propertyIndex = 0; propertyIndex < foreignKey.Properties.Count; propertyIndex++)
875846
{
876-
if (property == foreignKey.Properties[propertyIndex])
847+
if (property != foreignKey.Properties[propertyIndex])
848+
{
849+
continue;
850+
}
851+
852+
var principalProperty = foreignKey.PrincipalKey.Properties[propertyIndex];
853+
if (principalProperty == cycleBreakingProperty)
854+
{
855+
break;
856+
}
857+
858+
var annotationFound = false;
859+
var valueConverterAnnotation = principalProperty.FindAnnotation(CoreAnnotationNames.ValueConverter);
860+
if (valueConverterAnnotation != null)
877861
{
878-
var principalProperty = foreignKey.PrincipalKey.Properties[propertyIndex];
879-
if (principalProperty == this
880-
|| principalProperty == property)
862+
var annotationValue = (ValueConverter?)valueConverterAnnotation.Value;
863+
if (annotationValue != null)
881864
{
882-
break;
865+
if (valueConverter != null)
866+
{
867+
throw new InvalidOperationException(
868+
CoreStrings.ConflictingRelationshipConversions(
869+
DeclaringType.DisplayName(), Name,
870+
valueConverter.GetType().ShortDisplayName(), annotationValue.GetType().ShortDisplayName()));
871+
}
872+
873+
if (providerClrType != null
874+
&& throwOnProviderClrTypeConflict)
875+
{
876+
throw new InvalidOperationException(
877+
CoreStrings.ConflictingRelationshipConversions(
878+
DeclaringType.DisplayName(), Name,
879+
providerClrType.ShortDisplayName(), annotationValue.GetType().ShortDisplayName()));
880+
}
881+
882+
valueConverter = annotationValue;
883883
}
884+
annotationFound = true;
885+
}
884886

885-
annotation = principalProperty.FindAnnotation(CoreAnnotationNames.ProviderClrType);
886-
if (annotation != null)
887+
var providerClrTypeAnnotation = principalProperty.FindAnnotation(CoreAnnotationNames.ProviderClrType);
888+
if (providerClrTypeAnnotation != null)
889+
{
890+
var annotationValue = (Type?)providerClrTypeAnnotation.Value;
891+
if (annotationValue != null)
887892
{
888-
return (Type?)annotation.Value;
893+
if (providerClrType != null)
894+
{
895+
throw new InvalidOperationException(
896+
CoreStrings.ConflictingRelationshipConversions(
897+
DeclaringType.DisplayName(), Name,
898+
providerClrType.ShortDisplayName(), annotationValue.ShortDisplayName()));
899+
}
900+
901+
if (valueConverter != null
902+
&& throwOnValueConverterConflict)
903+
{
904+
throw new InvalidOperationException(
905+
CoreStrings.ConflictingRelationshipConversions(
906+
DeclaringType.DisplayName(), Name,
907+
valueConverter.GetType().ShortDisplayName(), annotationValue.ShortDisplayName()));
908+
}
909+
910+
providerClrType = annotationValue;
889911
}
912+
annotationFound = true;
913+
}
890914

891-
nextProperty = principalProperty;
915+
if (!annotationFound)
916+
{
917+
if (cyclePosition == maxCycleLength)
918+
{
919+
// We need to use all possible factors to ensure a different cycleBreakingProperty is selected
920+
// each time when traversing properties that participate in multiple relationship cycles
921+
queue.Enqueue((principalProperty, property, 0, maxCycleLength * HashHelpers.GetPrime(maxCycleLength + 1)));
922+
}
923+
else
924+
{
925+
queue.Enqueue((principalProperty, cycleBreakingProperty, cyclePosition + 1, maxCycleLength));
926+
}
892927
}
928+
break;
893929
}
894930
}
895-
896-
if (nextProperty == null)
897-
{
898-
break;
899-
}
900-
901-
property = nextProperty;
902931
}
903932

904-
return i == ForeignKey.LongestFkChainAllowedLength
905-
? throw new InvalidOperationException(
906-
CoreStrings.RelationshipCycle(
907-
DeclaringType.DisplayName(), Name, "ProviderClrType"))
908-
: null;
933+
return (valueConverter, providerClrType);
909934
}
910935

911936
/// <summary>
@@ -1376,7 +1401,7 @@ public virtual bool IsForeignKey()
13761401
/// doing so can result in application failures when updating to a new Entity Framework Core release.
13771402
/// </summary>
13781403
public virtual IEnumerable<ForeignKey> GetContainingForeignKeys()
1379-
=> ForeignKeys?.OrderBy(fk => fk.Properties, PropertyListComparer.Instance) ?? Enumerable.Empty<ForeignKey>();
1404+
=> ForeignKeys?.OrderBy(fk => fk, ForeignKeyComparer.Instance) ?? Enumerable.Empty<ForeignKey>();
13801405

13811406
/// <summary>
13821407
/// This is an internal API that supports the Entity Framework Core infrastructure and not subject to

‎src/EFCore/Metadata/RuntimeEntityType.cs‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -212,7 +212,7 @@ public virtual RuntimeForeignKey AddForeignKey(
212212
{
213213
if (property.ForeignKeys == null)
214214
{
215-
property.ForeignKeys = new List<RuntimeForeignKey> { foreignKey };
215+
property.ForeignKeys = new SortedSet<RuntimeForeignKey>(ForeignKeyComparer.Instance) { foreignKey };
216216
}
217217
else
218218
{

‎src/EFCore/Metadata/RuntimeProperty.cs‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -207,7 +207,7 @@ private IEnumerable<RuntimeKey> GetContainingKeys()
207207
/// doing so can result in application failures when updating to a new Entity Framework Core release.
208208
/// </summary>
209209
[EntityFrameworkInternal]
210-
public virtual List<RuntimeForeignKey>? ForeignKeys { get; set; }
210+
public virtual ISet<RuntimeForeignKey>? ForeignKeys { get; set; }
211211

212212
private IEnumerable<RuntimeForeignKey> GetContainingForeignKeys()
213213
=> ForeignKeys ?? Enumerable.Empty<RuntimeForeignKey>();

‎src/EFCore/Properties/CoreStrings.Designer.cs‎

Lines changed: 9 additions & 0 deletions
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‎src/EFCore/Properties/CoreStrings.resx‎

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -342,6 +342,9 @@
342342
<data name="ConflictingPropertyOrNavigation" xml:space="preserve">
343343
<value>The property or navigation '{member}' cannot be added to the '{type}' type because a property or navigation with the same name already exists on the '{conflictingType}' type.</value>
344344
</data>
345+
<data name="ConflictingRelationshipConversions" xml:space="preserve">
346+
<value>The property '{entityType}.{property}' participates in several relationship chains that have conflicting conversions: '{valueConversion}' and '{conflictingValueConversion}'.</value>
347+
</data>
345348
<data name="ConflictingRelationshipNavigation" xml:space="preserve">
346349
<value>Cannot create a relationship between '{newPrincipalNavigationSpecification}' and '{newDependentNavigationSpecification}' because a relationship already exists between '{existingPrincipalNavigationSpecification}' and '{existingDependentNavigationSpecification}'. Navigations can only participate in a single relationship. If you want to override an existing relationship call 'Ignore' on the navigation '{newDependentNavigationSpecification}' first in 'OnModelCreating'.</value>
347350
</data>

‎test/EFCore.Specification.Tests/TestUtilities/ModelAsserter.cs‎

Lines changed: 7 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -665,6 +665,13 @@ public virtual bool AssertEqual(
665665
Assert.Equal(expected.DeclaringEntityType.Name, actual.DeclaringEntityType.Name);
666666
}
667667
},
668+
() =>
669+
{
670+
if (compareBackreferences)
671+
{
672+
Assert.Equal(expected.GetReferencingForeignKeys().ToList(), actual.GetReferencingForeignKeys(), ForeignKeyComparer.Instance);
673+
}
674+
},
668675
() => Assert.Equal(expectedAnnotations, actualAnnotations, TestAnnotationComparer.Instance));
669676

670677
return true;

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