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


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  * IntegerAttributeHandler.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: IntegerAttributeHandler.java,v 1.2 2005/10/18 13:30:16 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 24.09.2003 : Initial version
40  *
41  */
42
43 package org.jfree.xml.attributehandlers;
44
45 import org.jfree.util.Log;
46
47 /**
48  * A class that handles the conversion of {@link Integer} attributes to and from an appropriate
49  * {@link String} representation.
50  */
51 public class IntegerAttributeHandler implements AttributeHandler {
52
53     /**
54      * Creates a new attribute handler.
55      */
56     public IntegerAttributeHandler() {
57         super();
58     }
59
60     /**
61      * Converts the attribute to a string.
62      *
63      * @param o the attribute ({@link Integer} expected).
64      *
65      * @return A string representing the integer value.
66      */
67     public String JavaDoc toAttributeValue(final Object JavaDoc o) {
68         try {
69             final Integer JavaDoc in = (Integer JavaDoc) o;
70             return in.toString();
71         }
72         catch (ClassCastException JavaDoc cce) {
73             if (o != null) {
74                 Log.debug("ClassCastException: Expected Integer, found " + o.getClass());
75             }
76             throw cce;
77         }
78     }
79
80     /**
81      * Converts a string to a {@link Integer}.
82      *
83      * @param s the string.
84      *
85      * @return a {@link Integer}.
86      */
87     public Object JavaDoc toPropertyValue(final String JavaDoc s) {
88         return new Integer JavaDoc(s);
89     }
90 }
91
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