| /* |
| * @(#)$Id$ |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2001-2003 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 2001, Sun |
| * Microsystems., http://www.sun.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| * @author G. Todd Miller |
| * |
| */ |
| |
| |
| package org.apache.xalan.xsltc.trax; |
| |
| import javax.xml.transform.ErrorListener; |
| 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.DOMResult; |
| 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.TemplatesHandler; |
| import javax.xml.transform.sax.TransformerHandler; |
| import javax.xml.transform.stream.StreamResult; |
| import javax.xml.transform.stream.StreamSource; |
| |
| import org.apache.xml.utils.ObjectFactory; |
| import org.xml.sax.XMLFilter; |
| |
| /** |
| * Implementation of a transformer factory that uses an XSLTC |
| * transformer factory for the creation of Templates objects |
| * and uses the Xalan processor transformer factory for the |
| * creation of Transformer objects. |
| */ |
| public class SmartTransformerFactoryImpl extends SAXTransformerFactory |
| { |
| |
| private SAXTransformerFactory _xsltcFactory = null; |
| private SAXTransformerFactory _xalanFactory = null; |
| private SAXTransformerFactory _currFactory = null; |
| private ErrorListener _errorlistener = null; |
| private URIResolver _uriresolver = null; |
| |
| /** |
| * implementation of the SmartTransformerFactory. This factory |
| * uses org.apache.xalan.xsltc.trax.TransformerFactory |
| * to return Templates objects; and uses |
| * org.apache.xalan.processor.TransformerFactory |
| * to return Transformer objects. |
| */ |
| public SmartTransformerFactoryImpl() { } |
| |
| private void createXSLTCTransformerFactory() { |
| _xsltcFactory = new TransformerFactoryImpl(); |
| _currFactory = _xsltcFactory; |
| } |
| |
| private void createXalanTransformerFactory() { |
| final String xalanMessage = |
| "org.apache.xalan.xsltc.trax.SmartTransformerFactoryImpl "+ |
| "could not create an "+ |
| "org.apache.xalan.processor.TransformerFactoryImpl."; |
| // try to create instance of Xalan factory... |
| try { |
| Class xalanFactClass = ObjectFactory.findProviderClass( |
| "org.apache.xalan.processor.TransformerFactoryImpl", |
| ObjectFactory.findClassLoader(), true); |
| _xalanFactory = (SAXTransformerFactory) |
| xalanFactClass.newInstance(); |
| } |
| catch (ClassNotFoundException e) { |
| System.err.println(xalanMessage); |
| } |
| catch (InstantiationException e) { |
| System.err.println(xalanMessage); |
| } |
| catch (IllegalAccessException e) { |
| System.err.println(xalanMessage); |
| } |
| _currFactory = _xalanFactory; |
| } |
| |
| public void setErrorListener(ErrorListener listener) |
| throws IllegalArgumentException |
| { |
| _errorlistener = listener; |
| } |
| |
| public ErrorListener getErrorListener() { |
| return _errorlistener; |
| } |
| |
| public Object getAttribute(String name) |
| throws IllegalArgumentException |
| { |
| // GTM: NB: 'debug' should change to something more unique... |
| if ((name.equals("translet-name")) || (name.equals("debug"))) { |
| if (_xsltcFactory == null) { |
| createXSLTCTransformerFactory(); |
| } |
| return _xsltcFactory.getAttribute(name); |
| } |
| else { |
| if (_xalanFactory == null) { |
| createXalanTransformerFactory(); |
| } |
| return _xalanFactory.getAttribute(name); |
| } |
| } |
| |
| public void setAttribute(String name, Object value) |
| throws IllegalArgumentException { |
| // GTM: NB: 'debug' should change to something more unique... |
| if ((name.equals("translet-name")) || (name.equals("debug"))) { |
| if (_xsltcFactory == null) { |
| createXSLTCTransformerFactory(); |
| } |
| _xsltcFactory.setAttribute(name, value); |
| } |
| else { |
| if (_xalanFactory == null) { |
| createXalanTransformerFactory(); |
| } |
| _xalanFactory.setAttribute(name, value); |
| } |
| } |
| |
| /** |
| * javax.xml.transform.sax.TransformerFactory implementation. |
| * Look up the value of a feature (to see if it is supported). |
| * This method must be updated as the various methods and features of this |
| * class are implemented. |
| * |
| * @param name The feature name |
| * @return 'true' if feature is supported, 'false' if not |
| */ |
| public boolean getFeature(String name) { |
| // All supported features should be listed here |
| String[] features = { |
| DOMSource.FEATURE, |
| DOMResult.FEATURE, |
| SAXSource.FEATURE, |
| SAXResult.FEATURE, |
| StreamSource.FEATURE, |
| StreamResult.FEATURE |
| }; |
| |
| // Inefficient, but it really does not matter in a function like this |
| for (int i=0; i<features.length; i++) { |
| if (name.equals(features[i])) return true; |
| } |
| |
| // Feature not supported |
| return false; |
| } |
| |
| public URIResolver getURIResolver() { |
| return _uriresolver; |
| } |
| |
| public void setURIResolver(URIResolver resolver) { |
| _uriresolver = resolver; |
| } |
| |
| public Source getAssociatedStylesheet(Source source, String media, |
| String title, String charset) |
| throws TransformerConfigurationException |
| { |
| if (_currFactory == null) { |
| createXSLTCTransformerFactory(); |
| } |
| return _currFactory.getAssociatedStylesheet(source, media, |
| title, charset); |
| } |
| |
| /** |
| * Create a Transformer object that copies the input document to the |
| * result. Uses the org.apache.xalan.processor.TransformerFactory. |
| * @return A Transformer object. |
| */ |
| public Transformer newTransformer() |
| throws TransformerConfigurationException |
| { |
| if (_xalanFactory == null) { |
| createXalanTransformerFactory(); |
| } |
| if (_errorlistener != null) { |
| _xalanFactory.setErrorListener(_errorlistener); |
| } |
| if (_uriresolver != null) { |
| _xalanFactory.setURIResolver(_uriresolver); |
| } |
| _currFactory = _xalanFactory; |
| return _currFactory.newTransformer(); |
| } |
| |
| /** |
| * Create a Transformer object that from the input stylesheet |
| * Uses the org.apache.xalan.processor.TransformerFactory. |
| * @param source the stylesheet. |
| * @return A Transformer object. |
| */ |
| public Transformer newTransformer(Source source) throws |
| TransformerConfigurationException |
| { |
| if (_xalanFactory == null) { |
| createXalanTransformerFactory(); |
| } |
| if (_errorlistener != null) { |
| _xalanFactory.setErrorListener(_errorlistener); |
| } |
| if (_uriresolver != null) { |
| _xalanFactory.setURIResolver(_uriresolver); |
| } |
| _currFactory = _xalanFactory; |
| return _currFactory.newTransformer(source); |
| } |
| |
| /** |
| * Create a Templates object that from the input stylesheet |
| * Uses the org.apache.xalan.xsltc.trax.TransformerFactory. |
| * @param source the stylesheet. |
| * @return A Templates object. |
| */ |
| public Templates newTemplates(Source source) |
| throws TransformerConfigurationException |
| { |
| if (_xsltcFactory == null) { |
| createXSLTCTransformerFactory(); |
| } |
| if (_errorlistener != null) { |
| _xsltcFactory.setErrorListener(_errorlistener); |
| } |
| if (_uriresolver != null) { |
| _xsltcFactory.setURIResolver(_uriresolver); |
| } |
| _currFactory = _xsltcFactory; |
| return _currFactory.newTemplates(source); |
| } |
| |
| /** |
| * Get a TemplatesHandler object that can process SAX ContentHandler |
| * events into a Templates object. Uses the |
| * org.apache.xalan.xsltc.trax.TransformerFactory. |
| */ |
| public TemplatesHandler newTemplatesHandler() |
| throws TransformerConfigurationException |
| { |
| if (_xsltcFactory == null) { |
| createXSLTCTransformerFactory(); |
| } |
| if (_errorlistener != null) { |
| _xsltcFactory.setErrorListener(_errorlistener); |
| } |
| if (_uriresolver != null) { |
| _xsltcFactory.setURIResolver(_uriresolver); |
| } |
| return _xsltcFactory.newTemplatesHandler(); |
| } |
| |
| /** |
| * Get a TransformerHandler object that can process SAX ContentHandler |
| * events based on a copy transformer. |
| * Uses org.apache.xalan.processor.TransformerFactory. |
| */ |
| public TransformerHandler newTransformerHandler() |
| throws TransformerConfigurationException |
| { |
| if (_xalanFactory == null) { |
| createXalanTransformerFactory(); |
| } |
| if (_errorlistener != null) { |
| _xalanFactory.setErrorListener(_errorlistener); |
| } |
| if (_uriresolver != null) { |
| _xalanFactory.setURIResolver(_uriresolver); |
| } |
| return _xalanFactory.newTransformerHandler(); |
| } |
| |
| /** |
| * Get a TransformerHandler object that can process SAX ContentHandler |
| * events based on a transformer specified by the stylesheet Source. |
| * Uses org.apache.xalan.processor.TransformerFactory. |
| */ |
| public TransformerHandler newTransformerHandler(Source src) |
| throws TransformerConfigurationException |
| { |
| if (_xalanFactory == null) { |
| createXalanTransformerFactory(); |
| } |
| if (_errorlistener != null) { |
| _xalanFactory.setErrorListener(_errorlistener); |
| } |
| if (_uriresolver != null) { |
| _xalanFactory.setURIResolver(_uriresolver); |
| } |
| return _xalanFactory.newTransformerHandler(src); |
| } |
| |
| |
| /** |
| * Get a TransformerHandler object that can process SAX ContentHandler |
| * events based on a transformer specified by the stylesheet Source. |
| * Uses org.apache.xalan.xsltc.trax.TransformerFactory. |
| */ |
| public TransformerHandler newTransformerHandler(Templates templates) |
| throws TransformerConfigurationException |
| { |
| if (_xsltcFactory == null) { |
| createXSLTCTransformerFactory(); |
| } |
| if (_errorlistener != null) { |
| _xsltcFactory.setErrorListener(_errorlistener); |
| } |
| if (_uriresolver != null) { |
| _xsltcFactory.setURIResolver(_uriresolver); |
| } |
| return _xsltcFactory.newTransformerHandler(templates); |
| } |
| |
| |
| /** |
| * Create an XMLFilter that uses the given source as the |
| * transformation instructions. Uses |
| * org.apache.xalan.xsltc.trax.TransformerFactory. |
| */ |
| public XMLFilter newXMLFilter(Source src) |
| throws TransformerConfigurationException { |
| if (_xsltcFactory == null) { |
| createXSLTCTransformerFactory(); |
| } |
| if (_errorlistener != null) { |
| _xsltcFactory.setErrorListener(_errorlistener); |
| } |
| if (_uriresolver != null) { |
| _xsltcFactory.setURIResolver(_uriresolver); |
| } |
| Templates templates = _xsltcFactory.newTemplates(src); |
| if (templates == null ) return null; |
| return newXMLFilter(templates); |
| } |
| |
| /* |
| * Create an XMLFilter that uses the given source as the |
| * transformation instructions. Uses |
| * org.apache.xalan.xsltc.trax.TransformerFactory. |
| */ |
| public XMLFilter newXMLFilter(Templates templates) |
| throws TransformerConfigurationException { |
| try { |
| return new org.apache.xalan.xsltc.trax.TrAXFilter(templates); |
| } |
| catch(TransformerConfigurationException e1) { |
| if (_xsltcFactory == null) { |
| createXSLTCTransformerFactory(); |
| } |
| ErrorListener errorListener = _xsltcFactory.getErrorListener(); |
| if(errorListener != null) { |
| try { |
| errorListener.fatalError(e1); |
| return null; |
| } |
| catch( TransformerException e2) { |
| new TransformerConfigurationException(e2); |
| } |
| } |
| throw e1; |
| } |
| } |
| } |
