Pipe.java Source code

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Here is the source code for Pipe.java

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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");
        }
    }
}