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/*
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* reserved comment block
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* DO NOT REMOVE OR ALTER!
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*/
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/*
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* Copyright 2001-2004 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* $Id: SmartTransformerFactoryImpl.java,v 1.2.4.1 2005/09/14 09:57:13 pvedula Exp $
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*/
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package com.sun.org.apache.xalan.internal.xsltc.trax;
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import javax.xml.XMLConstants;
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import javax.xml.transform.ErrorListener;
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import javax.xml.transform.Source;
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import javax.xml.transform.Templates;
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import javax.xml.transform.Transformer;
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import javax.xml.transform.TransformerConfigurationException;
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import javax.xml.transform.TransformerException;
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import javax.xml.transform.URIResolver;
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import javax.xml.transform.dom.DOMResult;
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import javax.xml.transform.dom.DOMSource;
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import javax.xml.transform.sax.SAXResult;
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import javax.xml.transform.sax.SAXSource;
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import javax.xml.transform.sax.SAXTransformerFactory;
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import javax.xml.transform.sax.TemplatesHandler;
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import javax.xml.transform.sax.TransformerHandler;
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import javax.xml.transform.stream.StreamResult;
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import javax.xml.transform.stream.StreamSource;
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import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg;
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import org.xml.sax.XMLFilter;
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/**
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* Implementation of a transformer factory that uses an XSLTC
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* transformer factory for the creation of Templates objects
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* and uses the Xalan processor transformer factory for the
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* creation of Transformer objects.
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* @author G. Todd Miller
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*/
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public class SmartTransformerFactoryImpl extends SAXTransformerFactory
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{
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/**
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* <p>Name of class as a constant to use for debugging.</p>
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*/
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private static final String CLASS_NAME = "SmartTransformerFactoryImpl";
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private SAXTransformerFactory _xsltcFactory = null;
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private SAXTransformerFactory _xalanFactory = null;
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private SAXTransformerFactory _currFactory = null;
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private ErrorListener _errorlistener = null;
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private URIResolver _uriresolver = null;
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/**
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* <p>State of secure processing feature.</p>
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*/
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private boolean featureSecureProcessing = false;
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/**
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* implementation of the SmartTransformerFactory. This factory
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* uses com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory
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* to return Templates objects; and uses
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* com.sun.org.apache.xalan.internal.processor.TransformerFactory
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* to return Transformer objects.
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*/
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public SmartTransformerFactoryImpl() { }
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private void createXSLTCTransformerFactory() {
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_xsltcFactory = new TransformerFactoryImpl();
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_currFactory = _xsltcFactory;
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}
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private void createXalanTransformerFactory() {
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final String xalanMessage =
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"com.sun.org.apache.xalan.internal.xsltc.trax.SmartTransformerFactoryImpl "+
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"could not create an "+
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"com.sun.org.apache.xalan.internal.processor.TransformerFactoryImpl.";
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// try to create instance of Xalan factory...
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try {
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Class xalanFactClass = ObjectFactory.findProviderClass(
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"com.sun.org.apache.xalan.internal.processor.TransformerFactoryImpl",
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ObjectFactory.findClassLoader(), true);
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_xalanFactory = (SAXTransformerFactory)
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xalanFactClass.newInstance();
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}
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catch (ClassNotFoundException e) {
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System.err.println(xalanMessage);
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}
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catch (InstantiationException e) {
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System.err.println(xalanMessage);
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}
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catch (IllegalAccessException e) {
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System.err.println(xalanMessage);
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}
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_currFactory = _xalanFactory;
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}
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public void setErrorListener(ErrorListener listener)
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throws IllegalArgumentException
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{
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_errorlistener = listener;
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}
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public ErrorListener getErrorListener() {
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return _errorlistener;
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}
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public Object getAttribute(String name)
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throws IllegalArgumentException
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{
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// GTM: NB: 'debug' should change to something more unique...
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if ((name.equals("translet-name")) || (name.equals("debug"))) {
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if (_xsltcFactory == null) {
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createXSLTCTransformerFactory();
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}
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return _xsltcFactory.getAttribute(name);
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}
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else {
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if (_xalanFactory == null) {
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createXalanTransformerFactory();
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}
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return _xalanFactory.getAttribute(name);
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}
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}
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public void setAttribute(String name, Object value)
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throws IllegalArgumentException {
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// GTM: NB: 'debug' should change to something more unique...
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if ((name.equals("translet-name")) || (name.equals("debug"))) {
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if (_xsltcFactory == null) {
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createXSLTCTransformerFactory();
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}
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_xsltcFactory.setAttribute(name, value);
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}
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else {
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if (_xalanFactory == null) {
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createXalanTransformerFactory();
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}
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_xalanFactory.setAttribute(name, value);
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}
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}
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/**
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* <p>Set a feature for this <code>SmartTransformerFactory</code> and <code>Transformer</code>s
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* or <code>Template</code>s created by this factory.</p>
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*
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* <p>
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* Feature names are fully qualified {@link java.net.URI}s.
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* Implementations may define their own features.
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* An {@link TransformerConfigurationException} is thrown if this <code>TransformerFactory</code> or the
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* <code>Transformer</code>s or <code>Template</code>s it creates cannot support the feature.
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* It is possible for an <code>TransformerFactory</code> to expose a feature value but be unable to change its state.
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* </p>
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*
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* <p>See {@link javax.xml.transform.TransformerFactory} for full documentation of specific features.</p>
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*
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* @param name Feature name.
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* @param value Is feature state <code>true</code> or <code>false</code>.
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*
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* @throws TransformerConfigurationException if this <code>TransformerFactory</code>
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* or the <code>Transformer</code>s or <code>Template</code>s it creates cannot support this feature.
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* @throws NullPointerException If the <code>name</code> parameter is null.
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*/
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public void setFeature(String name, boolean value)
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throws TransformerConfigurationException {
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// feature name cannot be null
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if (name == null) {
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ErrorMsg err = new ErrorMsg(ErrorMsg.JAXP_SET_FEATURE_NULL_NAME);
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throw new NullPointerException(err.toString());
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}
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// secure processing?
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else if (name.equals(XMLConstants.FEATURE_SECURE_PROCESSING)) {
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featureSecureProcessing = value;
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// all done processing feature
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return;
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}
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else {
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// unknown feature
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ErrorMsg err = new ErrorMsg(ErrorMsg.JAXP_UNSUPPORTED_FEATURE, name);
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throw new TransformerConfigurationException(err.toString());
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}
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}
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/**
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* javax.xml.transform.sax.TransformerFactory implementation.
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* Look up the value of a feature (to see if it is supported).
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* This method must be updated as the various methods and features of this
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* class are implemented.
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*
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* @param name The feature name
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* @return 'true' if feature is supported, 'false' if not
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*/
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public boolean getFeature(String name) {
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// All supported features should be listed here
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String[] features = {
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DOMSource.FEATURE,
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DOMResult.FEATURE,
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SAXSource.FEATURE,
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SAXResult.FEATURE,
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StreamSource.FEATURE,
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StreamResult.FEATURE
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};
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// feature name cannot be null
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if (name == null) {
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ErrorMsg err = new ErrorMsg(ErrorMsg.JAXP_GET_FEATURE_NULL_NAME);
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throw new NullPointerException(err.toString());
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}
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// Inefficient, but it really does not matter in a function like this
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for (int i = 0; i < features.length; i++) {
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if (name.equals(features[i]))
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return true;
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}
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// secure processing?
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if (name.equals(XMLConstants.FEATURE_SECURE_PROCESSING)) {
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return featureSecureProcessing;
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}
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// unknown feature
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return false;
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}
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public URIResolver getURIResolver() {
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return _uriresolver;
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}
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public void setURIResolver(URIResolver resolver) {
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_uriresolver = resolver;
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}
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public Source getAssociatedStylesheet(Source source, String media,
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String title, String charset)
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throws TransformerConfigurationException
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{
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if (_currFactory == null) {
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createXSLTCTransformerFactory();
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}
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return _currFactory.getAssociatedStylesheet(source, media,
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title, charset);
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}
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/**
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* Create a Transformer object that copies the input document to the
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* result. Uses the com.sun.org.apache.xalan.internal.processor.TransformerFactory.
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* @return A Transformer object.
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*/
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public Transformer newTransformer()
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throws TransformerConfigurationException
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{
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if (_xalanFactory == null) {
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createXalanTransformerFactory();
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}
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if (_errorlistener != null) {
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_xalanFactory.setErrorListener(_errorlistener);
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}
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if (_uriresolver != null) {
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_xalanFactory.setURIResolver(_uriresolver);
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}
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_currFactory = _xalanFactory;
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return _currFactory.newTransformer();
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}
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/**
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* Create a Transformer object that from the input stylesheet
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* Uses the com.sun.org.apache.xalan.internal.processor.TransformerFactory.
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* @param source the stylesheet.
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* @return A Transformer object.
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*/
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public Transformer newTransformer(Source source) throws
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TransformerConfigurationException
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{
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if (_xalanFactory == null) {
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createXalanTransformerFactory();
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}
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if (_errorlistener != null) {
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_xalanFactory.setErrorListener(_errorlistener);
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}
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if (_uriresolver != null) {
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_xalanFactory.setURIResolver(_uriresolver);
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}
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_currFactory = _xalanFactory;
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return _currFactory.newTransformer(source);
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}
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/**
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* Create a Templates object that from the input stylesheet
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* Uses the com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
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* @param source the stylesheet.
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* @return A Templates object.
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*/
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public Templates newTemplates(Source source)
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throws TransformerConfigurationException
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{
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if (_xsltcFactory == null) {
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createXSLTCTransformerFactory();
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}
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if (_errorlistener != null) {
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_xsltcFactory.setErrorListener(_errorlistener);
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}
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if (_uriresolver != null) {
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_xsltcFactory.setURIResolver(_uriresolver);
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}
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_currFactory = _xsltcFactory;
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return _currFactory.newTemplates(source);
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}
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/**
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* Get a TemplatesHandler object that can process SAX ContentHandler
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* events into a Templates object. Uses the
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* com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
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*/
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public TemplatesHandler newTemplatesHandler()
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throws TransformerConfigurationException
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{
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if (_xsltcFactory == null) {
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createXSLTCTransformerFactory();
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}
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if (_errorlistener != null) {
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_xsltcFactory.setErrorListener(_errorlistener);
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}
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if (_uriresolver != null) {
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_xsltcFactory.setURIResolver(_uriresolver);
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}
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return _xsltcFactory.newTemplatesHandler();
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}
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/**
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* Get a TransformerHandler object that can process SAX ContentHandler
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* events based on a copy transformer.
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* Uses com.sun.org.apache.xalan.internal.processor.TransformerFactory.
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*/
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public TransformerHandler newTransformerHandler()
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throws TransformerConfigurationException
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{
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if (_xalanFactory == null) {
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createXalanTransformerFactory();
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}
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if (_errorlistener != null) {
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_xalanFactory.setErrorListener(_errorlistener);
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}
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if (_uriresolver != null) {
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_xalanFactory.setURIResolver(_uriresolver);
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}
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return _xalanFactory.newTransformerHandler();
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}
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/**
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* Get a TransformerHandler object that can process SAX ContentHandler
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* events based on a transformer specified by the stylesheet Source.
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* Uses com.sun.org.apache.xalan.internal.processor.TransformerFactory.
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*/
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public TransformerHandler newTransformerHandler(Source src)
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throws TransformerConfigurationException
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{
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if (_xalanFactory == null) {
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createXalanTransformerFactory();
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}
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if (_errorlistener != null) {
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_xalanFactory.setErrorListener(_errorlistener);
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}
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if (_uriresolver != null) {
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_xalanFactory.setURIResolver(_uriresolver);
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}
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return _xalanFactory.newTransformerHandler(src);
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}
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/**
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* Get a TransformerHandler object that can process SAX ContentHandler
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* events based on a transformer specified by the stylesheet Source.
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* Uses com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
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*/
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public TransformerHandler newTransformerHandler(Templates templates)
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throws TransformerConfigurationException
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{
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if (_xsltcFactory == null) {
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createXSLTCTransformerFactory();
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}
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if (_errorlistener != null) {
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_xsltcFactory.setErrorListener(_errorlistener);
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}
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if (_uriresolver != null) {
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_xsltcFactory.setURIResolver(_uriresolver);
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}
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return _xsltcFactory.newTransformerHandler(templates);
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}
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/**
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* Create an XMLFilter that uses the given source as the
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* transformation instructions. Uses
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* com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
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*/
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public XMLFilter newXMLFilter(Source src)
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throws TransformerConfigurationException {
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if (_xsltcFactory == null) {
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createXSLTCTransformerFactory();
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}
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if (_errorlistener != null) {
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_xsltcFactory.setErrorListener(_errorlistener);
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}
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if (_uriresolver != null) {
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_xsltcFactory.setURIResolver(_uriresolver);
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}
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Templates templates = _xsltcFactory.newTemplates(src);
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if (templates == null ) return null;
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|
424 |
return newXMLFilter(templates);
|
|
425 |
}
|
|
426 |
|
|
427 |
/*
|
|
428 |
* Create an XMLFilter that uses the given source as the
|
|
429 |
* transformation instructions. Uses
|
|
430 |
* com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
|
|
431 |
*/
|
|
432 |
public XMLFilter newXMLFilter(Templates templates)
|
|
433 |
throws TransformerConfigurationException {
|
|
434 |
try {
|
|
435 |
return new com.sun.org.apache.xalan.internal.xsltc.trax.TrAXFilter(templates);
|
|
436 |
}
|
|
437 |
catch(TransformerConfigurationException e1) {
|
|
438 |
if (_xsltcFactory == null) {
|
|
439 |
createXSLTCTransformerFactory();
|
|
440 |
}
|
|
441 |
ErrorListener errorListener = _xsltcFactory.getErrorListener();
|
|
442 |
if(errorListener != null) {
|
|
443 |
try {
|
|
444 |
errorListener.fatalError(e1);
|
|
445 |
return null;
|
|
446 |
}
|
|
447 |
catch( TransformerException e2) {
|
|
448 |
new TransformerConfigurationException(e2);
|
|
449 |
}
|
|
450 |
}
|
|
451 |
throw e1;
|
|
452 |
}
|
|
453 |
}
|
|
454 |
}
|