/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.isis.core.metamodel.spec;
import java.util.List;
public interface Hierarchical {
/**
* Returns true if the <tt>subclasses()</tt> method will return an array of
* one or more elements (ie, not an empty array).
*/
boolean hasSubclasses();
/**
* Get the list of specifications for all the interfaces that the class
* represented by this specification implements.
*/
List<ObjectSpecification> interfaces();
/**
* Determines if this specification represents the same specification, or a
* subclass, of the specified specification.
*
* <p>
* <tt>subSpec.isOfType(superSpec)</tt> is equivalent to
* {@link Class#isAssignableFrom(Class) Java's}
* <tt>superType.isAssignableFrom(subType)</tt>.
*/
boolean isOfType(ObjectSpecification specification);
/**
* Get the list of specifications for the subclasses of the class
* represented by this specification
*/
List<ObjectSpecification> subclasses();
/**
* Get the specification for this specification's class's superclass.
*/
ObjectSpecification superclass();
}