XPathTreeCompiler


1   /*
2    * The contents of this file are subject to the terms of the Common Development
3    * and Distribution License (the License). You may not use this file except in
4    * compliance with the License.
5    * 
6    * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7    * or http://www.netbeans.org/cddl.txt.
8    * 
9    * When distributing Covered Code, include this CDDL Header Notice in each file
10   * and include the License file at http://www.netbeans.org/cddl.txt.
11   * If applicable, add the following below the CDDL Header, with the fields
12   * enclosed by brackets [] replaced by your own identifying information:
13   * "Portions Copyrighted [year] [name of copyright owner]"
14   * 
15   * The Original Software is NetBeans. The Initial Developer of the Original
16   * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
17   * Microsystems, Inc. All Rights Reserved.
18   */
19  
20  /*
21   * Created on Feb 9, 2005
22   *
23   * To change the template for this generated file go to
24   * Window - Preferences - Java - Code Generation - Code and Comments
25   */
26  package org.netbeans.modules.xml.xpath.impl;
27  
28  import org.apache.commons.jxpath.ri.compiler.Constant;
29  import org.apache.commons.jxpath.ri.compiler.TreeCompiler;
30  
31  /**
32   * @author radval
33   *
34   * Extended TreeCompiler for handling of Number values.
35   * We want to distinguish between Long and Double
36   * value of the Constant.
37   */
38  public class XPathTreeCompiler extends TreeCompiler {
39      
40      /**
41       * overriden this method to create
42       * appropriate Long or Double as the value stored in
43       * Constant.
44       */
45      public Object   number(String   value) {
46          //distinguish between Long and Double 
47          try {
48              int intVal = Integer.parseInt(value);
49              return new Constant(new Long  (value));
50          } catch(NumberFormatException   ex) {
51              //Do Nothing
52          }
53          
54          return new Constant(new Double  (value));
55      }
56  }
57
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