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 * AbstractElementDefinitionHandler.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: AbstractElementDefinitionHandler.java,v 1.3 2005/10/18 13:25:44 mungady Exp $
036 *
037 * Changes
038 * -------------------------
039 * 23.06.2003 : Initial version
040 *
041 */
042
043 package org.jfree.xml;
044
045 import org.xml.sax.Attributes;
046 import org.xml.sax.SAXException;
047
048 /**
049 * An abstract element definition handler.
050 *
051 * @author Thomas Morgner
052 */
053 public abstract class AbstractElementDefinitionHandler implements ElementDefinitionHandler {
054
055 /** A parser. */
056 private Parser parser;
057
058 /**
059 * Creates a new handler.
060 *
061 * @param parser the parser.
062 */
063 public AbstractElementDefinitionHandler(final Parser parser) {
064 this.parser = parser;
065 }
066
067 /**
068 * Callback to indicate that an XML element start tag has been read by the parser.
069 *
070 * @param tagName the tag name.
071 * @param attrs the attributes.
072 *
073 * @throws SAXException if a parser error occurs or the validation failed.
074 */
075 public void startElement(final String tagName, final Attributes attrs) throws SAXException {
076 // nothing required
077 }
078
079 /**
080 * Callback to indicate that some character data has been read.
081 *
082 * @param ch the character array.
083 * @param start the start index for the characters.
084 * @param length the length of the character sequence.
085 * @throws SAXException if a parser error occurs or the validation failed.
086 */
087 public void characters(final char[] ch, final int start, final int length) throws SAXException {
088 // nothing required
089 }
090
091 /**
092 * Callback to indicate that an XML element end tag has been read by the parser.
093 *
094 * @param tagName the tag name.
095 *
096 * @throws SAXException if a parser error occurs or the validation failed.
097 */
098 public void endElement(final String tagName) throws SAXException {
099 // nothing required
100 }
101
102 /**
103 * Returns the parser.
104 *
105 * @return The parser.
106 */
107 public Parser getParser() {
108 return this.parser;
109 }
110 }