///-------------------------------------------------------------------------------------------------
/// <summary> An ISchemaElement extension method that adds an implicit constraint. </summary>
/// <typeparam name="T"> Generic type parameter. </typeparam>
/// <param name="metadata"> The metadata to act on. </param>
/// <param name="expression"> The expression. </param>
/// <param name="message"> The message. </param>
/// <param name="propertyName"> (Optional) name of the property. </param>
/// <returns> An ConstraintBuilder<T> </returns>
///-------------------------------------------------------------------------------------------------
public static ConstraintBuilder <T> AddImplicitConstraint <T>(this SchemaRelationship <T> metadata, Func <T, bool> expression, DiagnosticMessage message, string propertyName = null) where T : IModelRelationship
{
Contract.Requires(metadata, "metadata");
Contract.Requires(expression, "expression");
Contract.Requires(message, "message");
return(new ConstraintBuilder <T>(metadata, propertyName, expression, message, true));
}
protected override void DefineSchema(ISchema schema)
{
ISchemaEntity customer = new SchemaEntity <Customer>(schema);
customer.DefineProperty <string>("Name");
ISchemaEntity product = new SchemaEntity <Product>(schema);
product.DefineProperty <string>("Name");
ISchemaRelationship rel = new SchemaRelationship("CustomerReferencesProducts", customer, product, Cardinality.ManyToMany);
}
protected override void DefineSchema(ISchema metaModel)
{
NamedElement = new SchemaEntity(metaModel, "NamedElement");
Library = new SchemaEntity(metaModel, "Library", NamedElement);
Book = new SchemaEntity(metaModel, "Book");
Member = new SchemaEntity(metaModel, "Member", NamedElement);
Loan = new SchemaEntity(metaModel, "Loan");
LoanReferencesBook = new SchemaRelationship("LoanReferencesBook", Loan, Book, Cardinality.ManyToOne, false, null, "Book");
LibraryHasBooks = new SchemaRelationship("LibraryHasBooks", Library, Book, Cardinality.OneToMany, true, null, "Books");
LibraryHasMembers = new SchemaRelationship("LibraryHasMembers", Library, Member, Cardinality.OneToMany, true, null, "Members");
LibraryHasLoans = new SchemaRelationship("LibraryHasLoans", Library, Loan, Cardinality.OneToMany, true, null, "Loans");
LoanReferencesMember = new SchemaRelationship("LoanReferencesMember", Loan, Member, Cardinality.ManyToOne, false, null, "Member");
NamedElement.DefineProperty <string>("Name");
Book.DefineProperty <string>("Title");
Book.DefineProperty <int>("Copies");
}
