1 /*
   2  * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package test.astro;
  24 
  25 import static jaxp.library.JAXPTestUtilities.filenameToURL;
  26 import static test.astro.AstroConstants.DECXSL;
  27 import static test.astro.AstroConstants.RAURIXSL;
  28 import static test.astro.AstroConstants.STYPEXSL;
  29 import static test.astro.AstroConstants.TOPTEMPLINCXSL;
  30 
  31 import java.io.IOException;
  32 
  33 import javax.xml.parsers.ParserConfigurationException;
  34 import javax.xml.parsers.SAXParserFactory;
  35 import javax.xml.transform.Source;
  36 import javax.xml.transform.TransformerConfigurationException;
  37 import javax.xml.transform.TransformerException;
  38 import javax.xml.transform.TransformerFactory;
  39 import javax.xml.transform.URIResolver;
  40 import javax.xml.transform.sax.SAXTransformerFactory;
  41 import javax.xml.transform.sax.TemplatesHandler;
  42 import javax.xml.transform.sax.TransformerHandler;
  43 import javax.xml.transform.stream.StreamSource;
  44 
  45 import org.xml.sax.InputSource;
  46 import org.xml.sax.SAXException;
  47 import org.xml.sax.XMLReader;
  48 
  49 /*
  50  * Implementation of the filter factory interface that utilizes
  51  * a TemplatesHandler and creates Templates from the stylesheets.
  52  * The Templates objects are then used to create a TransformerHandler
  53  * a.k.a Filter which is returned to the caller.
  54  * This factory uses a Uri resolver which is registered with the
  55  * Transformer factory.
  56  *
  57  */
  58 public class TemplatesFilterFactoryImpl extends AbstractFilterFactory {
  59     private final URIResolver uriResolver = new TemplatesFilterFactoryURIResolver();
  60 
  61     @Override
  62     protected String getRAXsl() {
  63         return RAURIXSL;
  64     }
  65 
  66     @Override
  67     protected String getDECXsl() {
  68         return DECXSL;
  69     }
  70 
  71     @Override
  72     protected String getRADECXsl() {
  73         return DECXSL;
  74     }
  75 
  76     @Override
  77     protected String getStellarXsl() {
  78         return STYPEXSL;
  79     }
  80 
  81     @Override
  82     protected TransformerHandler getTransformerHandler(String xslFileName) throws SAXException, ParserConfigurationException,
  83             TransformerConfigurationException, IOException {
  84         SAXTransformerFactory factory = (SAXTransformerFactory) TransformerFactory.newInstance();
  85         factory.setURIResolver(uriResolver);
  86 
  87         TemplatesHandler templatesHandler = factory.newTemplatesHandler();
  88 
  89         SAXParserFactory pFactory = SAXParserFactory.newInstance();
  90         pFactory.setNamespaceAware(true);
  91 
  92         XMLReader xmlreader = pFactory.newSAXParser().getXMLReader();
  93 
  94         // create the stylesheet input source
  95         InputSource xslSrc = new InputSource(xslFileName);
  96 
  97         xslSrc.setSystemId(filenameToURL(xslFileName));
  98         // hook up the templates handler as the xsl content handler
  99         xmlreader.setContentHandler(templatesHandler);
 100         // call parse on the xsl input source
 101 
 102         xmlreader.parse(xslSrc);
 103 
 104         // extract the Templates object created from the xsl input source
 105         return factory.newTransformerHandler(templatesHandler.getTemplates());
 106     }
 107 
 108     /*
 109      * Uri resolver used to resolve stylesheet used by the Templates filter
 110      * factory.
 111      */
 112     private static class TemplatesFilterFactoryURIResolver implements URIResolver {
 113         public Source resolve(String href, String base) throws TransformerException {
 114             if ("http://astro.com/stylesheets/topleveltemplate".equals(href)) {
 115                 StreamSource ss = new StreamSource(TOPTEMPLINCXSL);
 116                 ss.setSystemId(filenameToURL(TOPTEMPLINCXSL));
 117                 return ss;
 118             } else {
 119                 return null;
 120             }
 121         }
 122     }
 123 }