/*
* Copyright (C) 2009 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.services.xml.transform.impl.trax;
import org.exoplatform.services.xml.transform.NotSupportedIOTypeException;
import org.exoplatform.services.xml.transform.impl.TransformerBase;
import org.exoplatform.services.xml.transform.trax.TRAXTransformer;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Properties;
import javax.xml.transform.ErrorListener;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Templates;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.URIResolver;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.sax.SAXSource;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.sax.TransformerHandler;
import javax.xml.transform.stream.StreamResult;
/**
* Created by The eXo Platform SAS . Implementation of Trax Transformer
* interface
*
* @author <a href="mailto:geaz@users.sourceforge.net">Gennady Azarenkov</a>
* @author <a href="mailto:alex.kravchuk@gmail.com">Alexander Kravchuk</a>
* @version $Id: TRAXTransformerImpl.java 5799 2006-05-28 17:55:42Z geaz $
*/
public class TRAXTransformerImpl extends TransformerBase implements TRAXTransformer
{
protected TransformerHandler tHandler;
protected Transformer getTransformer()
{
return tHandler.getTransformer();
}
public TRAXTransformerImpl() throws TransformerConfigurationException
{
SAXTransformerFactory saxTFactory = (SAXTransformerFactory)SAXTransformerFactory.newInstance();
tHandler = saxTFactory.newTransformerHandler();
}
public TRAXTransformerImpl(Source source) throws TransformerConfigurationException
{
SAXTransformerFactory saxTFactory = (SAXTransformerFactory)SAXTransformerFactory.newInstance();
tHandler = saxTFactory.newTransformerHandler(source);
}
public TRAXTransformerImpl(Templates templates) throws TransformerConfigurationException
{
SAXTransformerFactory saxTFactory = (SAXTransformerFactory)SAXTransformerFactory.newInstance();
tHandler = saxTFactory.newTransformerHandler(templates);
}
protected void internalTransform(Source source) throws TransformerException, NotSupportedIOTypeException,
IllegalStateException
{
XMLReader xmlReader = null;
try
{
// xmlReader = XMLReaderFactory.
// createXMLReader("org.apache.xerces.parsers.SAXParser");
xmlReader = getXMLReader();
// set default resolver
if (resolvingService != null)
{
xmlReader.setEntityResolver(resolvingService.getEntityResolver());
log.debug("Set entity resolver");
}
}
catch (SAXException ex)
{
throw new TransformerException(ex);
}
xmlReader.setContentHandler(tHandler);
// tHandler.setResult(getResult());
InputSource inputSource = null;
// todo simplify
// SAXSource.sourceToInputSource(Source source) from JSDK does not supported
// DOMSource
if (source instanceof DOMSource)
{
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
SAXTransformerFactory.newInstance().newTransformer().transform(source, new StreamResult(outputStream));
inputSource = new InputSource(new ByteArrayInputStream(outputStream.toByteArray()));
}
else
{
inputSource = SAXSource.sourceToInputSource(source);
}
if (inputSource == null)
{
throw new NotSupportedIOTypeException(source);
}
try
{
xmlReader.parse(inputSource);
}
catch (SAXException ex)
{
throw new TransformerException(ex);
}
catch (IOException ex)
{
throw new TransformerException(ex);
}
}
protected void afterInitResult()
{
tHandler.setResult(getResult());
}
// delegation to Transformer, see getTransformer()
public Result getTransformerAsResult()
{
return new SAXResult(tHandler);
}
public Object getParameter(String param)
{
return getTransformer().getParameter(param);
}
public void setParameter(String name, Object value)
{
getTransformer().setParameter(name, value);
}
public void clearParameters()
{
getTransformer().clearParameters();
}
public String getOutputProperty(String prop)
{
return getTransformer().getOutputProperty(prop);
}
public void setOutputProperty(String name, String value)
{
getTransformer().setOutputProperty(name, value);
}
public void setOutputProperties(Properties props)
{
getTransformer().setOutputProperties(props);
}
public Properties getOutputProperties()
{
return getTransformer().getOutputProperties();
}
public URIResolver getURIResolver()
{
return getTransformer().getURIResolver();
}
public void setURIResolver(URIResolver resolver)
{
getTransformer().setURIResolver(resolver);
}
public ErrorListener getErrorListener()
{
return getTransformer().getErrorListener();
}
public void setErrorListener(ErrorListener listener)
{
getTransformer().setErrorListener(listener);
}
}