/**
* 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 javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.Persistent;
/**
* Not instantiable; the {@link PeerDomainObjectForTesting} must be used in the bidir contract testing instead.
*/
@PersistenceCapable
public abstract class PeerDomainObject {
// {{ Next (property)
@Persistent(mappedBy="previous")
private PeerDomainObject next;
public PeerDomainObject getNext() {
return next;
}
public void setNext(final PeerDomainObject next) {
this.next = next;
}
public void modifyNext(final PeerDomainObject next) {
PeerDomainObject currentNext = getNext();
// check for no-op
if (next == null || next.equals(currentNext)) {
return;
}
// dissociate existing
clearNext();
// associate new
next.setPrevious(this);
setNext(next);
}
public void clearNext() {
PeerDomainObject currentNext = getNext();
// check for no-op
if (currentNext == null) {
return;
}
// dissociate existing
currentNext.setPrevious(null);
setNext(null);
}
// }}
// {{ Previous (property)
private PeerDomainObject previous;
public PeerDomainObject getPrevious() {
return previous;
}
public void setPrevious(final PeerDomainObject previous) {
this.previous = previous;
}
public void modifyPrevious(final PeerDomainObject previous) {
PeerDomainObject currentPrevious = getPrevious();
// check for no-op
if (previous == null || previous.equals(currentPrevious)) {
return;
}
// delegate to parent(s) to (re-)associate
if (currentPrevious != null) {
currentPrevious.clearNext();
}
previous.modifyNext(this);
}
public void clearPrevious() {
PeerDomainObject currentPrevious = getPrevious();
// check for no-op
if (currentPrevious == null) {
return;
}
// delegate to parent to dissociate
currentPrevious.clearNext();
}
// }}
}