001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.commons.configuration.tree;
018    
019    /**
020     * <p>
021     * A simple adapter class that simplifies writing custom node visitor
022     * implementations.
023     * </p>
024     * <p>
025     * This class provides dummy implementations for the methods defined in the
026     * {@code ConfigurationNodeVisitor} interface. Derived classes only need
027     * to override the methods they really need.
028     * </p>
029     *
030     * @author <a
031     * href="http://commons.apache.org/configuration/team-list.html">Commons
032     * Configuration team</a>
033     * @version $Id: ConfigurationNodeVisitorAdapter.java 1206464 2011-11-26 15:49:10Z oheger $
034     */
035    public class ConfigurationNodeVisitorAdapter implements
036            ConfigurationNodeVisitor
037    {
038        /**
039         * Empty dummy implementation of this interface method.
040         *
041         * @param node the node
042         */
043        public void visitBeforeChildren(ConfigurationNode node)
044        {
045        }
046    
047        /**
048         * Empty dummy implementation of this interface method.
049         *
050         * @param node the node
051         */
052        public void visitAfterChildren(ConfigurationNode node)
053        {
054        }
055    
056        /**
057         * Dummy implementation of this interface method. Returns always <b>false</b>.
058         *
059         * @return the terminate flag
060         */
061        public boolean terminate()
062        {
063            return false;
064        }
065    }