/**
* 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.unittestsupport.bidir;
import java.util.SortedSet;
import java.util.TreeSet;
import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.Persistent;
@PersistenceCapable
public class ParentDomainObject {
// {{ Children (Collection)
@Persistent(mappedBy="parent")
private SortedSet<ChildDomainObject> children = new TreeSet<ChildDomainObject>();
public SortedSet<ChildDomainObject> getChildren() {
return children;
}
public void setChildren(final SortedSet<ChildDomainObject> children) {
this.children = children;
}
public void addToChildren(final ChildDomainObject child) {
// check for no-op
if (child == null || getChildren().contains(child)) {
return;
}
// dissociate arg from its current parent (if any).
child.clearParent();
// associate arg
child.setParent(this);
getChildren().add(child);
}
public void removeFromChildren(final ChildDomainObject child) {
// check for no-op
if (child == null || !getChildren().contains(child)) {
return;
}
// dissociate arg
child.setParent(null);
getChildren().remove(child);
}
// }}
}