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Don't try to discover FK properties when conflicting with 2 or more other FKs #29849

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Dec 15, 2022
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Don't try to discover FK properties when conflicting with 2 or more other FKs #29849

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2 changes: 1 addition & 1 deletion src/EFCore/Metadata/Conventions/ForeignKeyPropertyDiscoveryConvention.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -309,7 +309,7 @@ private IConventionForeignKeyBuilder ProcessForeignKey(
: relationshipBuilder;
}

if (conflictingFKCount == 0)
if (conflictingFKCount >= 0)
{
return ((ForeignKey)foreignKey).Builder.ReuniquifyImplicitProperties(false);
}
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46 changes: 40 additions & 6 deletions test/EFCore.Tests/Metadata/Conventions/ForeignKeyPropertyDiscoveryConventionTest.cs
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Expand Up @@ -777,7 +777,7 @@ public void Does_not_match_if_a_foreign_key_on_the_best_candidate_property_alrea
dependentTypeBuilder.Property(DependentEntity.PrincipalEntityPeEKaYProperty, ConfigurationSource.Convention);
dependentTypeBuilder.Property(DependentEntity.PeEKaYProperty, ConfigurationSource.Convention);

dependentTypeBuilder.HasRelationship(PrincipalType, new[] { fkProperty }, ConfigurationSource.Convention);
var relationshipBuilder = dependentTypeBuilder.HasRelationship(PrincipalType, new[] { fkProperty }, ConfigurationSource.Convention);

var newRelationshipBuilder = dependentTypeBuilder.HasRelationship(
PrincipalType, "SomeNav", null, ConfigurationSource.Convention);
Expand All @@ -788,10 +788,6 @@ public void Does_not_match_if_a_foreign_key_on_the_best_candidate_property_alrea

newRelationshipBuilder = RunConvention(newRelationshipBuilder);

var relationshipBuilder = DependentType.GetForeignKeys()
.Single(foreignKey => foreignKey != newRelationshipBuilder.Metadata)
.Builder.HasForeignKey(new[] { fkProperty }, ConfigurationSource.Convention);

var fk = (IReadOnlyForeignKey)relationshipBuilder.Metadata;
Assert.Same(fkProperty, fk.Properties.Single());
Assert.False(fk.IsUnique);
Expand All @@ -808,7 +804,45 @@ public void Does_not_match_if_a_foreign_key_on_the_best_candidate_property_alrea
nameof(DependentEntity) + ".SomeNav",
nameof(PrincipalEntity),
"{'" + nameof(DependentEntity.SomeNavPeEKaY) + "'}"),
Assert.Throws<InvalidOperationException>(() => ValidateModel()).Message);
Assert.Throws<InvalidOperationException>(ValidateModel).Message);
}

[ConditionalFact]
public void Does_not_match_if_a_foreign_key_on_the_best_candidate_property_already_configured_explicitly()
{
var dependentTypeBuilder = DependentType.Builder;
var fkProperty = dependentTypeBuilder.Property(DependentEntity.SomeNavPeEKaYProperty, ConfigurationSource.Convention).Metadata;
dependentTypeBuilder.Property(DependentEntity.PrincipalEntityIDProperty, ConfigurationSource.Convention);
dependentTypeBuilder.Property(DependentEntity.PrincipalEntityPeEKaYProperty, ConfigurationSource.Convention);
dependentTypeBuilder.Property(DependentEntity.PeEKaYProperty, ConfigurationSource.Convention);

var derivedTypeBuilder = _model.Entity(typeof(DerivedPrincipalEntity), ConfigurationSource.Convention);
derivedTypeBuilder.HasBaseType(PrincipalType, ConfigurationSource.Convention);

var relationshipBuilder = dependentTypeBuilder
.HasRelationship(derivedTypeBuilder.Metadata, new[] { fkProperty }, ConfigurationSource.Explicit);
var compositeRelationshipBuilder = dependentTypeBuilder
.HasRelationship(PrincipalTypeWithCompositeKey, new[] { fkProperty }, ConfigurationSource.Explicit);

var newRelationshipBuilder = dependentTypeBuilder.HasRelationship(
PrincipalType, "SomeNav", null, ConfigurationSource.Convention);

Assert.Equal(
"SomeNav" + nameof(PrincipalEntity.PeeKay),
newRelationshipBuilder.Metadata.Properties.Single().Name);

newRelationshipBuilder = RunConvention(newRelationshipBuilder);

var fk = (IReadOnlyForeignKey)relationshipBuilder.Metadata;
Assert.Same(fkProperty, fk.Properties.Single());
Assert.False(fk.IsUnique);

var newFk = newRelationshipBuilder.Metadata;
Assert.Equal(3, DependentType.GetForeignKeys().Count());
Assert.Equal("SomeNav" + nameof(PrincipalEntity.PeeKay), newFk.Properties.Single().Name);
Assert.Null(newFk.GetPropertiesConfigurationSource());

ValidateModel();
}

[ConditionalFact]
Expand Down