public void Can_create_navigation()
{
var foreignKey = CreateForeignKey();
var navigation = new Navigation("Deception", foreignKey);
Assert.Same(foreignKey, navigation.ForeignKey);
Assert.Equal("Deception", navigation.Name);
Assert.Same(foreignKey.DeclaringEntityType, navigation.DeclaringEntityType);
}
public virtual Navigation HasPrincipalToDependent([CanBeNull] string name)
{
var oldNavigation = PrincipalToDependent;
if (oldNavigation != null)
{
PrincipalEntityType.RemoveNavigation(oldNavigation.Name);
}
Navigation navigation = null;
if (name != null)
{
navigation = PrincipalEntityType.AddNavigation(name, this, pointsToPrincipal: false);
}
PrincipalToDependent = navigation;
return navigation ?? oldNavigation;
}
public virtual Navigation HasDependentToPrincipal([CanBeNull] string name)
{
var oldNavigation = DependentToPrincipal;
if (oldNavigation != null)
{
DeclaringEntityType.RemoveNavigation(oldNavigation.Name);
}
Navigation newNavigation = null;
if (name != null)
{
newNavigation = DeclaringEntityType.AddNavigation(name, this, pointsToPrincipal: true);
}
DependentToPrincipal = newNavigation;
return newNavigation ?? oldNavigation;
}
private InversePropertyAttribute GetInversePropertyAttributeOnNavigation(Navigation navigation)
{
return navigation.DeclaringEntityType.ClrType?.GetRuntimeProperties()
.FirstOrDefault(p => string.Equals(p.Name, navigation.Name, StringComparison.OrdinalIgnoreCase))
?.GetCustomAttribute<InversePropertyAttribute>(true);
}
private static bool CanMergeWith(
Navigation existingNavigation, string inverseName, InternalEntityTypeBuilder inverseEntityTypeBuilder)
{
var fk = existingNavigation.ForeignKey;
return (fk.IsSelfReferencing()
|| fk.ResolveOtherEntityType(existingNavigation.DeclaringEntityType) == inverseEntityTypeBuilder.Metadata)
&& inverseEntityTypeBuilder.ModelBuilder.Entity(fk.DeclaringEntityType.Name, ConfigurationSource.Convention)
.Relationship(fk, ConfigurationSource.Convention)
.CanSetNavigation(inverseName, !existingNavigation.IsDependentToPrincipal(), ConfigurationSource.Convention);
}
public virtual InternalRelationshipBuilder Apply(InternalRelationshipBuilder relationshipBuilder, Navigation navigation)
=> Apply(relationshipBuilder);
