ObjectVar


1   /*
2    * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3    *
4    * This file is part of Resin(R) Open Source
5    *
6    * Each copy or derived work must preserve the copyright notice and this
7    * notice unmodified.
8    *
9    * Resin Open Source is free software; you can redistribute it and/or modify
10   * it under the terms of the GNU General Public License as published by
11   * the Free Software Foundation; either version 2 of the License, or
12   * (at your option) any later version.
13   *
14   * Resin Open Source is distributed in the hope that it will be useful,
15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17   * of NON-INFRINGEMENT.  See the GNU General Public License for more
18   * details.
19   *
20   * You should have received a copy of the GNU General Public License
21   * along with Resin Open Source; if not, write to the
22   *   Free SoftwareFoundation, Inc.
23   *   59 Temple Place, Suite 330
24   *   Boston, MA 02111-1307  USA
25   *
26   * @author Scott Ferguson
27   */
28  
29  package com.caucho.xpath.expr;
30  
31  import com.caucho.xpath.Expr;
32  import com.caucho.xpath.XPathException;
33  import com.caucho.xpath.pattern.NodeIterator;
34  
35  /**
36   * A variable containing a Java object.
37   */
38  public class ObjectVar extends Var {
39    private Object   object;
40  
41    /**
42     * Creates a new object variable with the object.
43     */
44    public ObjectVar(Object   object)
45    {
46      this.object = object;
47    }
48    
49    /**
50     * Returns the value as a double.
51     */
52    double getDouble()
53      throws XPathException
54    {
55      double v = Expr.toDouble(getObject());
56  
57      return v;
58    }
59    
60    /**
61     * Returns the value as an object.
62     */
63    Object   getObject()
64    {
65      if (object instanceof NodeIterator)
66        return ((NodeIterator) object).clone();
67      else
68        return object;
69    }
70  
71    public String   toString()
72    {
73      return "[ObjectVar " + object + "]";
74    }
75  }
76  
77
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