/*
* @(#)$Id: TrAXFilter.java,v 1.5 2003/01/30 18:46:14 mkwan Exp $
*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2001-2003 The Apache Software Foundation. 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 following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xalan" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* 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 APACHE SOFTWARE FOUNDATION OR
* ITS 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 Apache Software Foundation and was
* originally based on software copyright (c) 2001, Sun
* Microsystems., http://www.sun.com. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* @author Santiago Pericas-Geertsen
* @author G. Todd Miller
*
*/
package org.apache.xalan.xsltc.trax;
import java.io.IOException;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.transform.ErrorListener;
import javax.xml.transform.Templates;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.sax.SAXResult;
import org.xml.sax.ContentHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLFilterImpl;
import org.xml.sax.helpers.XMLReaderFactory;
/**
* skeleton extension of XMLFilterImpl for now.
*/
public class TrAXFilter extends XMLFilterImpl {
private Templates _templates;
private TransformerHandlerImpl _transformer;
public TrAXFilter(Templates templates) throws
TransformerConfigurationException
{
_templates = templates;
_transformer = new TransformerHandlerImpl(
(TransformerImpl) templates.newTransformer());
}
private void createParent() throws SAXException {
XMLReader parent = null;
try {
SAXParserFactory pfactory = SAXParserFactory.newInstance();
pfactory.setNamespaceAware(true);
SAXParser saxparser = pfactory.newSAXParser();
parent = saxparser.getXMLReader();
}
catch (ParserConfigurationException e) {
throw new SAXException(e);
}
catch (FactoryConfigurationError e) {
throw new SAXException(e.toString());
}
if (parent == null) {
parent = XMLReaderFactory.createXMLReader();
}
// make this XMLReader the parent of this filter
setParent(parent);
}
public void parse (InputSource input) throws SAXException, IOException
{
if (getParent() == null) {
try {
createParent();
}
catch (SAXException e) {
throw new SAXException(e.toString());
}
}
// call parse on the parent
getParent().parse(input);
}
public void parse (String systemId) throws SAXException, IOException
{
parse(new InputSource(systemId));
}
public void setContentHandler (ContentHandler handler)
{
_transformer.setResult(new SAXResult(handler));
if (getParent() == null) {
try {
createParent();
}
catch (SAXException e) {
return;
}
}
getParent().setContentHandler(_transformer);
}
public void setErrorListener (ErrorListener handler) { }
}