/*--  $Id: XercesDOMAdapter.java,v 1.19 2007/11/10 05:28:59 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.adapters;import java.io.*;import java.lang.reflect.*;import org.jdom.*;import org.jdom.input.*;import org.w3c.dom.Document;import org.xml.sax.*;/** * An adapter for the Apache Xerces DOM parser. *  * @version $Revision: 1.19 $, $Date: 2007/11/10 05:28:59 $ * @author  Brett McLaughlin * @author  Jason Hunter */public class XercesDOMAdapter extends AbstractDOMAdapter {    private static final String CVS_ID =       "@(#) $RCSfile: XercesDOMAdapter.java,v $ $Revision: 1.19 $ $Date: 2007/11/10 05:28:59 $ $Name: jdom_1_1 $";    /**     * This creates a new <code>{@link Document}</code> from an     * existing <code>InputStream</code> by letting a DOM     * parser handle parsing using the supplied stream.     *     * @param in <code>InputStream</code> to parse.     * @param validate <code>boolean</code> to indicate if validation      * should occur.     * @return <code>Document</code> - instance ready for use.     * @throws IOException when I/O error occurs.     * @throws JDOMException when errors occur in parsing.     */    public Document getDocument(InputStream in, boolean validate)        throws IOException, JDOMException  {        try {            // Load the parser class            Class parserClass =                Class.forName("org.apache.xerces.parsers.DOMParser");            Object parser = parserClass.newInstance();            // Set validation            Method setFeature = parserClass.getMethod(                "setFeature",                new Class[] {java.lang.String.class, boolean.class});            setFeature.invoke(parser,                 new Object[] {"http://xml.org/sax/features/validation",                new Boolean(validate)});            // Set namespaces true            setFeature.invoke(parser,                new Object[] {"http://xml.org/sax/features/namespaces",                new Boolean(true)});            // Set the error handler            if (validate) {                Method setErrorHandler = parserClass.getMethod(                    "setErrorHandler",                    new Class[] {ErrorHandler.class});                setErrorHandler.invoke(parser,                    new Object[] {new BuilderErrorHandler()});            }            // Parse the document            Method parse = parserClass.getMethod(                "parse",                new Class[] {org.xml.sax.InputSource.class});            parse.invoke(parser, new Object[]{new InputSource(in)});            // Get the Document object            Method getDocument = parserClass.getMethod("getDocument", null);            Document doc = (Document)getDocument.invoke(parser, null);            return doc;        } catch (InvocationTargetException e) {            Throwable targetException = e.getTargetException();            if (targetException instanceof org.xml.sax.SAXParseException) {                SAXParseException parseException =                    (SAXParseException)targetException;                throw new JDOMException("Error on line " +                                      parseException.getLineNumber() +                                      " of XML document: " +                                      parseException.getMessage(), e);            } else if (targetException instanceof IOException) {                IOException ioException = (IOException) targetException;                throw ioException;            } else {                throw new JDOMException(targetException.getMessage(), e);            }        } catch (Exception e) {            throw new JDOMException(e.getClass().getName() + ": " +                                  e.getMessage(), e);        }    }    /**     * This creates an empty <code>Document</code> object based     * on a specific parser implementation.     *     * @return <code>Document</code> - created DOM Document.     * @throws JDOMException when errors occur.     */    public Document createDocument() throws JDOMException {        try {            return (Document)Class.forName(                "org.apache.xerces.dom.DocumentImpl").newInstance();        } catch (Exception e) {            throw new JDOMException(e.getClass().getName() + ": " +                                  e.getMessage() + " when creating document", e);        }    }}