/*-- $Id: JAXPParserFactory.java,v 1.6 2007/11/10 05:29:00 jhunter Exp $ Copyright (C) 2000-2007 Jason Hunter & Brett McLaughlin. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright    notice, this list of conditions, and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright    notice, this list of conditions, and the disclaimer that follows    these conditions in the documentation and/or other materials    provided with the distribution. 3. The name "JDOM" must not be used to endorse or promote products    derived from this software without prior written permission.  For    written permission, please contact <request_AT_jdom_DOT_org>. 4. Products derived from this software may not be called "JDOM", nor    may "JDOM" appear in their name, without prior written permission    from the JDOM Project Management <request_AT_jdom_DOT_org>. In addition, we request (but do not require) that you include in the end-user documentation provided with the redistribution and/or in the software itself an acknowledgement equivalent to the following:     "This product includes software developed by the      JDOM Project (http://www.jdom.org/)." Alternatively, the acknowledgment may be graphical using the logos available at http://www.jdom.org/images/logos. THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE JDOM AUTHORS OR THE PROJECT CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. This software consists of voluntary contributions made by many individuals on behalf of the JDOM Project and was originally created by Jason Hunter <jhunter_AT_jdom_DOT_org> and Brett McLaughlin <brett_AT_jdom_DOT_org>.  For more information on the JDOM Project, please see <http://www.jdom.org/>. */package org.jdom.input;import java.util.*;import javax.xml.parsers.*;import org.jdom.*;import org.xml.sax.*;/** * A non-public utility class to allocate JAXP SAX parsers. * * @version $Revision: 1.6 $, $Date: 2007/11/10 05:29:00 $ * @author  Laurent Bihanic */class JAXPParserFactory {               // package protected    private static final String CVS_ID =      "@(#) $RCSfile: JAXPParserFactory.java,v $ $Revision: 1.6 $ $Date: 2007/11/10 05:29:00 $ $Name: jdom_1_1 $";    /** JAXP 1.2 schema language property id. */    private static final String JAXP_SCHEMA_LANGUAGE_PROPERTY =       "http://java.sun.com/xml/jaxp/properties/schemaLanguage";    /** JAXP 1.2 schema location property id. */    private static final String JAXP_SCHEMA_LOCATION_PROPERTY =       "http://java.sun.com/xml/jaxp/properties/schemaSource";    /**     * Private constructor to forbid allocating instances of this utility     * class.     */    private JAXPParserFactory() {        // Never called.    }    /* Implementor's note regarding createParser() design: The features and    properties are normally set in SAXBuilder, but we take them in    createParser() as well because some features or properties may need to be    applied during the JAXP parser construction. Today, for example, properties    is used as it's the only way to configure schema validation: JAXP defines    schema validation properties but SAX does not. This reflects in the Apache    Xerces implementation where the SAXParser implementation supports the JAXP    properties but the XMLReader does not. Hence, configuring schema validation    must be done on the SAXParser object which is only visible in    JAXParserFactory. Features is also passed in case some future JAXP release    defines JAXP-specific features.     */    /**     * Creates a SAX parser allocated through the configured JAXP SAX     * parser factory.     *     * @param  validating   whether a validating parser is requested.     * @param  features     the user-defined SAX features.     * @param  properties   the user-defined SAX properties.     *     * @return a configured XMLReader.     *     * @throws JDOMException if any error occurred when allocating or     *                       configuring the JAXP SAX parser.     */    public static XMLReader createParser(boolean validating,                          Map features, Map properties) throws JDOMException {        try {            SAXParser parser = null;            // Allocate and configure JAXP SAX parser factory.            SAXParserFactory factory = SAXParserFactory.newInstance();            factory.setValidating(validating);            factory.setNamespaceAware(true);            try {                // Allocate parser.                parser = factory.newSAXParser();            }            catch (ParserConfigurationException e) {                throw new JDOMException("Could not allocate JAXP SAX Parser", e);            }            // Set user-defined JAXP properties (if any)            setProperty(parser, properties, JAXP_SCHEMA_LANGUAGE_PROPERTY);            setProperty(parser, properties, JAXP_SCHEMA_LOCATION_PROPERTY);            // Return configured SAX XMLReader.            return parser.getXMLReader();        }        catch (SAXException e) {            throw new JDOMException("Could not allocate JAXP SAX Parser", e);        }    }    /**     * Sets a property on a JAXP SAX parser object if and only if it     * is declared in the user-defined properties.     *     * @param  parser       the JAXP SAX parser to configure.     * @param  properties   the user-defined SAX properties.     * @param  name         the name of the property to set.     *     * @throws JDOMException if any error occurred while configuring     *                       the property.     */    private static void setProperty(SAXParser parser,                        Map properties, String name) throws JDOMException {        try {            if (properties.containsKey(name)) {                parser.setProperty(name, properties.get(name));            }        }        catch (SAXNotSupportedException e) {            throw new JDOMException(                name + " property not supported for JAXP parser " +                parser.getClass().getName());        }        catch (SAXNotRecognizedException e) {            throw new JDOMException(                name + " property not recognized for JAXP parser " +                parser.getClass().getName());        }    }}