    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     * ListWriteHandler.java
    029     * ---------------------
    030     * (C)opyright 2003-2005, by Thomas Morgner and Contributors.
    031     *
    032     * Original Author:  Thomas Morgner;
    033     * Contributor(s):   David Gilbert (for Object Refinery Limited);
    034     *
    035     * $Id: ListWriteHandler.java,v 1.4 2005/10/18 13:35:21 mungady Exp $
    036     *
    037     * Changes
    038     * -------
    039     * 22-Nov-2003 : Initial version
    040     *
    041     */
    042
    043    package org.jfree.xml.writer.coretypes;
    044
    045    import java.io.IOException;
    046    import java.util.Iterator;
    047    import java.util.List;
    048
    049    import org.jfree.xml.writer.AbstractXmlWriteHandler;
    050    import org.jfree.xml.writer.XMLWriter;
    051    import org.jfree.xml.writer.XMLWriterException;
    052    import org.jfree.xml.writer.XMLWriterSupport;
    053
    054    /**
    055     * A handler for writing a {@link List} object.
    056     */
    057    public class ListWriteHandler extends AbstractXmlWriteHandler {
    058
    059        /**
    060         * Performs the writing of a {@link List} object.
    061         *
    062         * @param tagName  the tag name.
    063         * @param object  the {@link List} object.
    064         * @param writer  the writer.
    065         * @param mPlexAttribute  ??.
    066         * @param mPlexValue  ??.
    067         *
    068         * @throws IOException if there is an I/O error.
    069         * @throws XMLWriterException if there is a writer error.
    070         */
    071        public void write(final String tagName, final Object object, final XMLWriter writer,
    072                          final String mPlexAttribute, final String mPlexValue)
    073            throws IOException, XMLWriterException {
    074
    075            writer.writeTag(tagName, mPlexAttribute, mPlexValue, XMLWriterSupport.OPEN);
    076
    077            final List list = (List) object;
    078            final Iterator it = list.iterator();
    079            while (it.hasNext()) {
    080                final Object value = it.next();
    081                if (value == null) {
    082                    writer.writeTag("null", XMLWriterSupport.CLOSE);
    083                }
    084                else {
    085                    getRootHandler().write("object", value, Object.class, writer);
    086                }
    087            }
    088
    089            writer.writeCloseTag(tagName);
    090        }
    091
    092    }