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 */ 042 043 package 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 */ 049 public 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 }