private void CheckKeyNotInUse(Key key)
{
var foreignKey = Model?.GetReferencingForeignKeys(key).FirstOrDefault();
if (foreignKey != null)
{
throw new InvalidOperationException(Strings.KeyInUse(Property.Format(key.Properties), Name, foreignKey.DeclaringEntityType.Name));
}
}
public void Can_get_referencing_foreign_keys()
{
var model = new Model();
var entityType1 = new EntityType(typeof(Customer));
var entityType2 = new EntityType(typeof(Order));
var keyProperty = new Property("Id", typeof(Customer))
{
EntityType = entityType1
};
var fkProperty = new Property("CustomerId", typeof(Order))
{
EntityType = entityType2
};
var foreignKey = entityType2.AddForeignKey(new Key(new[] { keyProperty }), fkProperty);
model.AddEntityType(entityType1);
model.AddEntityType(entityType2);
var referencingForeignKeys = model.GetReferencingForeignKeys(entityType1);
Assert.Same(foreignKey, referencingForeignKeys.Single());
Assert.Same(foreignKey, entityType1.GetReferencingForeignKeys().Single());
}
public void Can_get_referencing_foreign_keys()
{
var model = new Model();
var entityType1 = new EntityType(typeof(Customer));
var entityType2 = new EntityType(typeof(Order));
var keyProperty = new Property("Id", typeof(Customer)) { EntityType = entityType1 };
var fkProperty = new Property("CustomerId", typeof(Order)) { EntityType = entityType2 };
var foreignKey = entityType2.AddForeignKey(new Key(new[] { keyProperty }), fkProperty);
model.AddEntityType(entityType1);
model.AddEntityType(entityType2);
var referencingForeignKeys = model.GetReferencingForeignKeys(entityType1);
Assert.Same(foreignKey, referencingForeignKeys.Single());
Assert.Same(foreignKey, entityType1.GetReferencingForeignKeys().Single());
}
public virtual IEnumerable <ForeignKey> GetReferencingForeignKeys() => Model.GetReferencingForeignKeys(this);
