Source for 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;
  46: import java.util.Iterator;
  47: import java.util.List;
  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 tagName, final Object object, final XMLWriter writer,
  72:                       final String mPlexAttribute, final String mPlexValue)
  73:         throws IOException, XMLWriterException {
  74: 
  75:         writer.writeTag(tagName, mPlexAttribute, mPlexValue, XMLWriterSupport.OPEN);
  76: 
  77:         final List list = (List) object;
  78:         final Iterator it = list.iterator();
  79:         while (it.hasNext()) {
  80:             final Object value = it.next();
  81:             if (value == null) {
  82:                 writer.writeTag("null", XMLWriterSupport.CLOSE);
  83:             }
  84:             else {
  85:                 getRootHandler().write("object", value, Object.class, writer);
  86:             }
  87:         }
  88: 
  89:         writer.writeCloseTag(tagName);
  90:     }
  91:     
  92: }