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1   package org.codehaus.mojo.javancss;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.util.Comparator;
23  
24  import org.dom4j.Node;
25  
26  /**
27   * Comparator for numeric xml node tag.
28   *
29   * @author <a href="jeanlaurentATgmail.com">Jean-Laurent de Morlhon</a>
30   * @version $Id$
31   */
32  public class NumericNodeComparator
33      implements Comparator<Node>
34  {
35      /**
36       * the tag property used by this comparator
37       */
38      private String tagProperty;
39  
40      /**
41       * The numeric node tag property to used by this comparator.
42       *
43       * @param property the tag property used by this comparator.
44       */
45      public NumericNodeComparator( String property )
46      {
47          this.tagProperty = property;
48      }
49  
50      /**
51       * {@inheritDoc}
52       */
53      public int compare( Node node1, Node node2 )
54      {
55          return node2.numberValueOf( tagProperty ).intValue() - node1.numberValueOf( tagProperty ).intValue();
56      }
57  
58  }