    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    }