SAX2SAX


1   
2   /*
3    * Copyright 1999-2004 The Apache Software Foundation.
4    *
5    * Licensed under the Apache License, Version 2.0 (the "License");
6    * you may not use this file except in compliance with the License.
7    * You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  /*
18   * $Id: SAX2SAX.java,v 1.12 2004/02/17 19:07:48 minchau Exp $
19   */
20  
21  /**
22   *  Replicate the SimpleTransform sample, explicitly using the SAX model to handle the
23   *  stylesheet, the XML input, and the transformation.
24   */
25  
26  import java.io.FileOutputStream  ;
27  import java.io.IOException  ;
28  
29  import javax.xml.transform.Result  ;
30  import javax.xml.transform.Templates  ;
31  import javax.xml.transform.TransformerConfigurationException  ;
32  import javax.xml.transform.TransformerException  ;
33  import javax.xml.transform.TransformerFactory  ;
34  import javax.xml.transform.sax.SAXResult  ;
35  import javax.xml.transform.sax.SAXSource  ;
36  import javax.xml.transform.sax.SAXTransformerFactory  ;
37  import javax.xml.transform.sax.TemplatesHandler  ;
38  import javax.xml.transform.sax.TransformerHandler  ;
39  
40  import org.apache.xml.serializer.Serializer;
41  import org.apache.xml.serializer.SerializerFactory;
42  import org.apache.xml.serializer.OutputPropertiesFactory;
43  import org.xml.sax.SAXException  ;
44  import org.xml.sax.XMLReader  ;
45  import org.xml.sax.helpers.XMLReaderFactory  ;
46  
47  
48  public class SAX2SAX
49  {
50    public static void main(String  [] args)
51      throws TransformerException  , TransformerConfigurationException  , 
52           SAXException  , IOException       
53      {
54  
55      // Instantiate a TransformerFactory.
56      TransformerFactory   tFactory = TransformerFactory.newInstance();
57      // Determine whether the TransformerFactory supports The use of SAXSource 
58      // and SAXResult
59      if (tFactory.getFeature(SAXSource.FEATURE) && tFactory.getFeature(SAXResult.FEATURE))
60      { 
61        // Cast the TransformerFactory.
62        SAXTransformerFactory   saxTFactory = ((SAXTransformerFactory  ) tFactory);
63        // Create a ContentHandler to handle parsing of the stylesheet.
64        TemplatesHandler   templatesHandler = saxTFactory.newTemplatesHandler();
65  
66        // Create an XMLReader and set its ContentHandler.
67        XMLReader   reader = XMLReaderFactory.createXMLReader();
68        reader.setContentHandler(templatesHandler);
69      
70        // Parse the stylesheet.                       
71        reader.parse("birds.xsl");
72  
73        //Get the Templates object from the ContentHandler.
74        Templates   templates = templatesHandler.getTemplates();
75        // Create a ContentHandler to handle parsing of the XML source.  
76        TransformerHandler   handler 
77          = saxTFactory.newTransformerHandler(templates);
78        // Reset the XMLReader's ContentHandler.
79        reader.setContentHandler(handler);  
80  
81        // Set the ContentHandler to also function as a LexicalHandler, which
82        // includes "lexical" events (e.g., comments and CDATA). 
83        reader.setProperty("http://xml.org/sax/properties/lexical-handler", handler);
84        
85        FileOutputStream   fos = new FileOutputStream  ("birds.out");
86        
87        Serializer serializer = SerializerFactory.getSerializer
88                                (OutputPropertiesFactory.getDefaultMethodProperties("xml"));
89        serializer.setOutputStream(fos);
90     
91        
92        // Set the result handling to be a serialization to the file output stream.
93        Result   result = new SAXResult  (serializer.asContentHandler());
94        handler.setResult(result);
95        
96        // Parse the XML input document.
97        reader.parse("birds.xml");
98        
99          System.out.println("************* The result is in birds.out *************");   
100     }   
101     else
102       System.out.println("The TransformerFactory does not support SAX input and SAX output");
103   }
104 }
105
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