- /*
- * @(#)$Id: SmartTransformerFactoryImpl.java,v 1.9 2003/08/14 16:27:43 ilene Exp $
- *
- * 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 com.sun.org.apache.xalan.internal.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 com.sun.org.apache.xml.internal.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 com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory
- * to return Templates objects; and uses
- * com.sun.org.apache.xalan.internal.processor.TransformerFactory
- * to return Transformer objects.
- */
- public SmartTransformerFactoryImpl() { }
-
- private void createXSLTCTransformerFactory() {
- _xsltcFactory = new TransformerFactoryImpl();
- _currFactory = _xsltcFactory;
- }
-
- private void createXalanTransformerFactory() {
- final String xalanMessage =
- "com.sun.org.apache.xalan.internal.xsltc.trax.SmartTransformerFactoryImpl "+
- "could not create an "+
- "com.sun.org.apache.xalan.internal.processor.TransformerFactoryImpl.";
- // try to create instance of Xalan factory...
- try {
- Class xalanFactClass = ObjectFactory.findProviderClass(
- "com.sun.org.apache.xalan.internal.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 com.sun.org.apache.xalan.internal.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 com.sun.org.apache.xalan.internal.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 com.sun.org.apache.xalan.internal.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
- * com.sun.org.apache.xalan.internal.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 com.sun.org.apache.xalan.internal.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 com.sun.org.apache.xalan.internal.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 com.sun.org.apache.xalan.internal.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
- * com.sun.org.apache.xalan.internal.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
- * com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
- */
- public XMLFilter newXMLFilter(Templates templates)
- throws TransformerConfigurationException {
- try {
- return new com.sun.org.apache.xalan.internal.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;
- }
- }
- }