/// <summary>
/// Called after a navigation is added to the entity type.
/// </summary>
/// <param name="relationshipBuilder"> The builder for the foreign key. </param>
/// <param name="navigation"> The navigation. </param>
/// <param name="context"> Additional information associated with convention execution. </param>
public virtual void ProcessNavigationAdded(
IConventionRelationshipBuilder relationshipBuilder,
IConventionNavigation navigation,
IConventionContext <IConventionNavigation> context)
{
Check.NotNull(relationshipBuilder, nameof(relationshipBuilder));
Check.NotNull(navigation, nameof(navigation));
var modelBuilder = relationshipBuilder.ModelBuilder;
if (!IsNonNullable(modelBuilder, navigation) ||
navigation.IsCollection())
{
return;
}
if (!navigation.IsDependentToPrincipal())
{
var inverse = navigation.FindInverse();
if (inverse != null)
{
if (IsNonNullable(modelBuilder, inverse))
{
Dependencies.Logger.NonNullableReferenceOnBothNavigations(navigation, inverse);
return;
}
}
if (!navigation.ForeignKey.IsUnique ||
relationshipBuilder.Metadata.GetPrincipalEndConfigurationSource() != null)
{
Dependencies.Logger.NonNullableReferenceOnDependent(navigation.ForeignKey.PrincipalToDependent);
return;
}
var newRelationshipBuilder = relationshipBuilder.HasEntityTypes(
relationshipBuilder.Metadata.DeclaringEntityType,
relationshipBuilder.Metadata.PrincipalEntityType);
if (newRelationshipBuilder == null)
{
return;
}
Dependencies.Logger.NonNullableInverted(newRelationshipBuilder.Metadata.DependentToPrincipal);
relationshipBuilder = newRelationshipBuilder;
}
relationshipBuilder.IsRequired(true);
context.StopProcessingIfChanged(relationshipBuilder.Metadata.DependentToPrincipal);
}
/// <summary>
/// Called after a navigation property that has an attribute is added to an entity type.
/// </summary>
/// <param name="relationshipBuilder"> The builder for the relationship. </param>
/// <param name="navigation"> The navigation. </param>
/// <param name="attribute"> The attribute. </param>
/// <param name="context"> Additional information associated with convention execution. </param>
public override void ProcessNavigationAdded(
IConventionRelationshipBuilder relationshipBuilder,
IConventionNavigation navigation,
RequiredAttribute attribute,
IConventionContext <IConventionNavigation> context)
{
Check.NotNull(relationshipBuilder, nameof(relationshipBuilder));
Check.NotNull(navigation, nameof(navigation));
Check.NotNull(attribute, nameof(attribute));
if (navigation.IsCollection())
{
Dependencies.Logger.RequiredAttributeOnCollection(navigation.ForeignKey.DependentToPrincipal);
return;
}
if (!navigation.IsDependentToPrincipal())
{
var inverse = navigation.FindInverse();
if (inverse != null)
{
var attributes = GetAttributes <RequiredAttribute>(inverse.DeclaringEntityType, inverse);
if (attributes.Any())
{
Dependencies.Logger.RequiredAttributeOnBothNavigations(navigation, inverse);
return;
}
}
if (relationshipBuilder.Metadata.GetPrincipalEndConfigurationSource() != null)
{
Dependencies.Logger.RequiredAttributeOnDependent(navigation.ForeignKey.PrincipalToDependent);
return;
}
var newRelationshipBuilder = relationshipBuilder.HasEntityTypes(
relationshipBuilder.Metadata.DeclaringEntityType,
relationshipBuilder.Metadata.PrincipalEntityType);
if (newRelationshipBuilder == null)
{
return;
}
Dependencies.Logger.RequiredAttributeInverted(newRelationshipBuilder.Metadata.DependentToPrincipal);
relationshipBuilder = newRelationshipBuilder;
}
relationshipBuilder.IsRequired(true, fromDataAnnotation: true);
context.StopProcessingIfChanged(relationshipBuilder.Metadata.DependentToPrincipal);
}