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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.configuration.tree;
18  
19  /***
20   * <p>
21   * A simple adapter class that simplyfies writing custom node visitor
22   * implementations.
23   * </p>
24   * <p>
25   * This class provides dummy implementations for the methods defined in the
26   * <code>ConfigurationNodeVisitor</code> interface. Derived classes only need
27   * to override the methods they really need.
28   * </p>
29   *
30   * @author Oliver Heger
31   */
32  public class ConfigurationNodeVisitorAdapter implements
33          ConfigurationNodeVisitor
34  {
35      /***
36       * Empty dummy implementation of this interface method.
37       *
38       * @param node the node
39       */
40      public void visitBeforeChildren(ConfigurationNode node)
41      {
42      }
43  
44      /***
45       * Empty dummy implementation of this interface method.
46       *
47       * @param node the node
48       */
49      public void visitAfterChildren(ConfigurationNode node)
50      {
51      }
52  
53      /***
54       * Dummy implementation of this interface method. Returns always <b>false</b>.
55       *
56       * @return the terminate flag
57       */
58      public boolean terminate()
59      {
60          return false;
61      }
62  }