| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * Copyright 2001-2004 The Apache Software Foundation. |
| * |
| * Licensed 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: SmartTransformerFactoryImpl.java,v 1.2.4.1 2005/09/14 09:57:13 pvedula Exp $ |
| */ |
| |
| |
| package com.sun.org.apache.xalan.internal.xsltc.trax; |
| |
| import javax.xml.XMLConstants; |
| 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.xalan.internal.xsltc.compiler.util.ErrorMsg; |
| import com.sun.org.apache.xalan.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. |
| * @author G. Todd Miller |
| */ |
| public class SmartTransformerFactoryImpl extends SAXTransformerFactory |
| { |
| /** |
| * <p>Name of class as a constant to use for debugging.</p> |
| */ |
| private static final String CLASS_NAME = "SmartTransformerFactoryImpl"; |
| |
| private SAXTransformerFactory _xsltcFactory = null; |
| private SAXTransformerFactory _xalanFactory = null; |
| private SAXTransformerFactory _currFactory = null; |
| private ErrorListener _errorlistener = null; |
| private URIResolver _uriresolver = null; |
| |
| /** |
| * <p>State of secure processing feature.</p> |
| */ |
| private boolean featureSecureProcessing = false; |
| |
| /** |
| * 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", |
| 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); |
| } |
| } |
| |
| /** |
| * <p>Set a feature for this <code>SmartTransformerFactory</code> and <code>Transformer</code>s |
| * or <code>Template</code>s created by this factory.</p> |
| * |
| * <p> |
| * Feature names are fully qualified {@link java.net.URI}s. |
| * Implementations may define their own features. |
| * An {@link TransformerConfigurationException} is thrown if this <code>TransformerFactory</code> or the |
| * <code>Transformer</code>s or <code>Template</code>s it creates cannot support the feature. |
| * It is possible for an <code>TransformerFactory</code> to expose a feature value but be unable to change its state. |
| * </p> |
| * |
| * <p>See {@link javax.xml.transform.TransformerFactory} for full documentation of specific features.</p> |
| * |
| * @param name Feature name. |
| * @param value Is feature state <code>true</code> or <code>false</code>. |
| * |
| * @throws TransformerConfigurationException if this <code>TransformerFactory</code> |
| * or the <code>Transformer</code>s or <code>Template</code>s it creates cannot support this feature. |
| * @throws NullPointerException If the <code>name</code> parameter is null. |
| */ |
| public void setFeature(String name, boolean value) |
| throws TransformerConfigurationException { |
| |
| // feature name cannot be null |
| if (name == null) { |
| ErrorMsg err = new ErrorMsg(ErrorMsg.JAXP_SET_FEATURE_NULL_NAME); |
| throw new NullPointerException(err.toString()); |
| } |
| // secure processing? |
| else if (name.equals(XMLConstants.FEATURE_SECURE_PROCESSING)) { |
| featureSecureProcessing = value; |
| // all done processing feature |
| return; |
| } |
| else { |
| // unknown feature |
| ErrorMsg err = new ErrorMsg(ErrorMsg.JAXP_UNSUPPORTED_FEATURE, name); |
| throw new TransformerConfigurationException(err.toString()); |
| } |
| } |
| |
| /** |
| * 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 |
| }; |
| |
| // feature name cannot be null |
| if (name == null) { |
| ErrorMsg err = new ErrorMsg(ErrorMsg.JAXP_GET_FEATURE_NULL_NAME); |
| throw new NullPointerException(err.toString()); |
| } |
| |
| // 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; |
| } |
| |
| // secure processing? |
| if (name.equals(XMLConstants.FEATURE_SECURE_PROCESSING)) { |
| return featureSecureProcessing; |
| } |
| |
| // unknown feature |
| 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; |
| } |
| } |
| } |
