org.camunda.bpm.engine.impl.migration.instance.MigratingScopeInstanceBottomUpWalker Maven / Gradle / Ivy
/*
* Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
* under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. Camunda licenses this file to you under the Apache License,
* Version 2.0; 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.camunda.bpm.engine.impl.migration.instance;
import org.camunda.bpm.engine.impl.tree.SingleReferenceWalker;
/**
* @author Thorben Lindhauer
*
*/
public class MigratingScopeInstanceBottomUpWalker extends SingleReferenceWalker {
protected MigratingScopeInstance parent = null;
public MigratingScopeInstanceBottomUpWalker(MigratingScopeInstance initialElement) {
super(initialElement);
// determine parent beforehand since it may be removed while walking
parent = initialElement.getParent();
}
@Override
protected MigratingScopeInstance nextElement() {
MigratingScopeInstance nextElement = parent;
if (parent != null) {
parent = parent.getParent();
}
return nextElement;
}
}