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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* $Id: Pipe.java 470245 2006-11-02 06:34:33Z minchau $
*/
import java.io.IOException;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
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.StreamSource;
import org.apache.xml.serializer.Serializer;
import org.apache.xml.serializer.SerializerFactory;
import org.apache.xml.serializer.OutputPropertiesFactory;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderFactory;
/**
* This example shows how to chain a series of transformations by
* piping SAX events from one Transformer to another. Each Transformer
* operates as a SAX2 XMLFilter/XMLReader.
*/
public class Pipe
{
public static void main(String[] args)
throws TransformerException, TransformerConfigurationException,
SAXException, IOException
{
// Instantiate a TransformerFactory.
TransformerFactory tFactory = TransformerFactory.newInstance();
// Determine whether the TransformerFactory supports The use uf SAXSource
// and SAXResult
if (tFactory.getFeature(SAXSource.FEATURE) && tFactory.getFeature(SAXResult.FEATURE))
{
// Cast the TransformerFactory to SAXTransformerFactory.
SAXTransformerFactory saxTFactory = ((SAXTransformerFactory) tFactory);
// Create a TransformerHandler for each stylesheet.
TransformerHandler tHandler1 = saxTFactory.newTransformerHandler(new StreamSource("foo1.xsl"));
TransformerHandler tHandler2 = saxTFactory.newTransformerHandler(new StreamSource("foo2.xsl"));
TransformerHandler tHandler3 = saxTFactory.newTransformerHandler(new StreamSource("foo3.xsl"));
// Create an XMLReader.
XMLReader reader = XMLReaderFactory.createXMLReader();
reader.setContentHandler(tHandler1);
reader.setProperty("http://xml.org/sax/properties/lexical-handler", tHandler1);
tHandler1.setResult(new SAXResult(tHandler2));
tHandler2.setResult(new SAXResult(tHandler3));
// transformer3 outputs SAX events to the serializer.
java.util.Properties xmlProps = OutputPropertiesFactory.getDefaultMethodProperties("xml");
xmlProps.setProperty("indent", "yes");
xmlProps.setProperty("standalone", "no");
Serializer serializer = SerializerFactory.getSerializer(xmlProps);
serializer.setOutputStream(System.out);
tHandler3.setResult(new SAXResult(serializer.asContentHandler()));
// Parse the XML input document. The input ContentHandler and output ContentHandler
// work in separate threads to optimize performance.
reader.parse("foo.xml");
}
}
}
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