001/* ========================================================================
002 * JCommon : a free general purpose class library for the Java(tm) platform
003 * ========================================================================
004 *
005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
006 * 
007 * Project Info:  http://www.jfree.org/jcommon/index.html
008 *
009 * This library is free software; you can redistribute it and/or modify it 
010 * under the terms of the GNU Lesser General Public License as published by 
011 * the Free Software Foundation; either version 2.1 of the License, or 
012 * (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but 
015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
017 * License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this library; if not, write to the Free Software
021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
022 * USA.  
023 *
024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025 * in the United States and other countries.]
026 * 
027 * ---------------------
028 * AttributeHandler.java
029 * ---------------------
030 * (C)opyright 2003, 2004, by Thomas Morgner and Contributors.
031 *
032 * Original Author:  Thomas Morgner;
033 * Contributor(s):   David Gilbert (for Object Refinery Limited);
034 *
035 * $Id: AttributeHandler.java,v 1.2 2005/10/18 13:30:16 mungady Exp $
036 *
037 * Changes 
038 * -------
039 * 23.09.2003 : Initial version
040 *  
041 */
042
043package org.jfree.xml.attributehandlers;
044
045/**
046 * An attribute handler is an object that can transform an object into a string or vice
047 * versa.
048 */
049public interface AttributeHandler {
050    
051    /**
052     * Converts an object to an attribute value.
053     * 
054     * @param o  the object.
055     * 
056     * @return the attribute value.
057     */
058    public String toAttributeValue (Object o);
059    
060    /**
061     * Converts a string to a property value.
062     * 
063     * @param s  the string.
064     * 
065     * @return a property value.
066     */    
067    public Object toPropertyValue (String s);
068
069}