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 * BooleanAttrbuteHandler.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: BooleanAttributeHandler.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 * A class that handles the conversion of {@link Boolean} attributes to and from their
047 * {@link String} representation.
048 */
049 public class BooleanAttributeHandler implements AttributeHandler {
050
051 /**
052 * Creates a new attribute handler.
053 */
054 public BooleanAttributeHandler() {
055 super();
056 }
057
058 /**
059 * Converts the attribute to a string.
060 *
061 * @param o the attribute ({@link Boolean} expected).
062 *
063 * @return A string representing the {@link Boolean} value.
064 */
065 public String toAttributeValue(final Object o) {
066 if (o instanceof Boolean) {
067 return o.toString();
068 }
069 throw new ClassCastException("Give me a real type.");
070 }
071
072 /**
073 * Converts a string to a {@link Boolean}.
074 *
075 * @param s the string.
076 *
077 * @return a {@link Boolean}.
078 */
079 public Object toPropertyValue(final String s) {
080 return new Boolean (s);
081 }
082 }