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Java > Open Source Codes > org > jfree > xml > writer > coretypes > ListWriteHandler


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  * ListWriteHandler.java
29  * ---------------------
30  * (C)opyright 2003-2005, by Thomas Morgner and Contributors.
31  *
32  * Original Author: Thomas Morgner;
33  * Contributor(s): David Gilbert (for Object Refinery Limited);
34  *
35  * $Id: ListWriteHandler.java,v 1.4 2005/10/18 13:35:21 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 22-Nov-2003 : Initial version
40  *
41  */
42
43 package org.jfree.xml.writer.coretypes;
44
45 import java.io.IOException JavaDoc;
46 import java.util.Iterator JavaDoc;
47 import java.util.List JavaDoc;
48
49 import org.jfree.xml.writer.AbstractXmlWriteHandler;
50 import org.jfree.xml.writer.XMLWriter;
51 import org.jfree.xml.writer.XMLWriterException;
52 import org.jfree.xml.writer.XMLWriterSupport;
53
54 /**
55  * A handler for writing a {@link List} object.
56  */
57 public class ListWriteHandler extends AbstractXmlWriteHandler {
58
59     /**
60      * Performs the writing of a {@link List} object.
61      *
62      * @param tagName the tag name.
63      * @param object the {@link List} object.
64      * @param writer the writer.
65      * @param mPlexAttribute ??.
66      * @param mPlexValue ??.
67      *
68      * @throws IOException if there is an I/O error.
69      * @throws XMLWriterException if there is a writer error.
70      */
71     public void write(final String JavaDoc tagName, final Object JavaDoc object, final XMLWriter writer,
72                       final String JavaDoc mPlexAttribute, final String JavaDoc mPlexValue)
73         throws IOException JavaDoc, XMLWriterException {
74
75         writer.writeTag(tagName, mPlexAttribute, mPlexValue, XMLWriterSupport.OPEN);
76
77         final List JavaDoc list = (List JavaDoc) object;
78         final Iterator JavaDoc it = list.iterator();
79         while (it.hasNext()) {
80             final Object JavaDoc value = it.next();
81             if (value == null) {
82                 writer.writeTag("null", XMLWriterSupport.CLOSE);
83             }
84             else {
85                 getRootHandler().write("object", value, Object JavaDoc.class, writer);
86             }
87         }
88
89         writer.writeCloseTag(tagName);
90     }
91     
92 }
93
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