/***************************************************************** * 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.cayenne.exp; /** * Noop implementation of TraversalHandler. * Useful as a superclass for partial implementations * of TraversalHandler. * */ public class TraversalHelper implements TraversalHandler { public void startNode(Expression node, Expression parentNode) { } public void endNode(Expression node, Expression parentNode) { } public void finishedChild(Expression node, int childIndex, boolean hasMoreChildren) { } public void objectNode(Object leaf, Expression parentNode) { } }