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Java > Open Source Codes > org > jfree > xml > attributehandlers > BooleanAttributeHandler


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,
22  * USA.
23  *
24  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25  * in the United States and other countries.]
26  *
27  * ---------------------------
28  * BooleanAttrbuteHandler.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: BooleanAttributeHandler.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  * A class that handles the conversion of {@link Boolean} attributes to and from their
47  * {@link String} representation.
48  */
49 public class BooleanAttributeHandler implements AttributeHandler {
50
51     /**
52      * Creates a new attribute handler.
53      */
54     public BooleanAttributeHandler() {
55         super();
56     }
57
58     /**
59      * Converts the attribute to a string.
60      *
61      * @param o the attribute ({@link Boolean} expected).
62      *
63      * @return A string representing the {@link Boolean} value.
64      */
65     public String JavaDoc toAttributeValue(final Object JavaDoc o) {
66         if (o instanceof Boolean JavaDoc) {
67             return o.toString();
68         }
69         throw new ClassCastException JavaDoc("Give me a real type.");
70     }
71
72     /**
73      * Converts a string to a {@link Boolean}.
74      *
75      * @param s the string.
76      *
77      * @return a {@link Boolean}.
78      */
79     public Object JavaDoc toPropertyValue(final String JavaDoc s) {
80         return new Boolean JavaDoc (s);
81     }
82 }
83
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