    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 simplyfies 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</code> interface. Derived classes only need
    027     * to override the methods they really need.
    028     * </p>
    029     *
    030     * @author Oliver Heger
    031     */
    032    public class ConfigurationNodeVisitorAdapter implements
    033            ConfigurationNodeVisitor
    034    {
    035        /**
    036         * Empty dummy implementation of this interface method.
    037         *
    038         * @param node the node
    039         */
    040        public void visitBeforeChildren(ConfigurationNode node)
    041        {
    042        }
    043
    044        /**
    045         * Empty dummy implementation of this interface method.
    046         *
    047         * @param node the node
    048         */
    049        public void visitAfterChildren(ConfigurationNode node)
    050        {
    051        }
    052
    053        /**
    054         * Dummy implementation of this interface method. Returns always <b>false</b>.
    055         *
    056         * @return the terminate flag
    057         */
    058        public boolean terminate()
    059        {
    060            return false;
    061        }
    062    }