AttributeHandler


1   /* ========================================================================
2    * JCommon : a free general purpose class library for the Java(tm) platform
3    * ========================================================================
4    *
5    * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
6    * 
7    * Project Info:  http://www.jfree.org/jcommon/index.html
8    *
9    * This library is free software; you can redistribute it and/or modify it 
10   * under the terms of the GNU Lesser General Public License as published by 
11   * the Free Software Foundation; either version 2.1 of the License, or 
12   * (at your option) any later version.
13   *
14   * This library is distributed in the hope that it will be useful, but 
15   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
16   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
17   * License for more details.
18   *
19   * You should have received a copy of the GNU Lesser General Public
20   * License along with this library; if not, write to the Free Software
21   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
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23   *
24   * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
25   * in the United States and other countries.]
26   * 
27   * ---------------------
28   * AttributeHandler.java
29   * ---------------------
30   * (C)opyright 2003, 2004, by Thomas Morgner and Contributors.
31   *
32   * Original Author:  Thomas Morgner;
33   * Contributor(s):   David Gilbert (for Object Refinery Limited);
34   *
35   * $Id: AttributeHandler.java,v 1.2 2005/10/18 13:30:16 mungady Exp $
36   *
37   * Changes 
38   * -------
39   * 23.09.2003 : Initial version
40   *  
41   */
42  
43  package org.jfree.xml.attributehandlers;
44  
45  /**
46   * An attribute handler is an object that can transform an object into a string or vice
47   * versa.
48   */
49  public interface AttributeHandler {
50      
51      /**
52       * Converts an object to an attribute value.
53       * 
54       * @param o  the object.
55       * 
56       * @return the attribute value.
57       */
58      public String   toAttributeValue (Object   o);
59      
60      /**
61       * Converts a string to a property value.
62       * 
63       * @param s  the string.
64       * 
65       * @return a property value.
66       */    
67      public Object   toPropertyValue (String   s);
68  
69  }
70
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