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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: TransformerHandlerImpl.java,v 1.2.4.1 2005/09/15 06:25:12 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.transform.Result;
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import javax.xml.transform.Transformer;
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import javax.xml.transform.TransformerException;
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import javax.xml.transform.sax.TransformerHandler;
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import javax.xml.transform.dom.DOMResult;
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import com.sun.org.apache.xalan.internal.xsltc.StripFilter;
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import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg;
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import com.sun.org.apache.xalan.internal.xsltc.dom.DOMWSFilter;
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import com.sun.org.apache.xalan.internal.xsltc.dom.SAXImpl;
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import com.sun.org.apache.xalan.internal.xsltc.dom.XSLTCDTMManager;
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import com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet;
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import com.sun.org.apache.xml.internal.dtm.DTMWSFilter;
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import com.sun.org.apache.xml.internal.serializer.SerializationHandler;
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import org.xml.sax.Attributes;
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import org.xml.sax.ContentHandler;
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import org.xml.sax.DTDHandler;
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import org.xml.sax.Locator;
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import org.xml.sax.SAXException;
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import org.xml.sax.ext.DeclHandler;
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import org.xml.sax.ext.LexicalHandler;
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import org.xml.sax.helpers.DefaultHandler;
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/**
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* Implementation of a JAXP1.1 TransformerHandler
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* @author Morten Jorgensen
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*/
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public class TransformerHandlerImpl implements TransformerHandler, DeclHandler {
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private TransformerImpl _transformer;
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private AbstractTranslet _translet = null;
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private String _systemId;
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private SAXImpl _dom = null;
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private ContentHandler _handler = null;
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private LexicalHandler _lexHandler = null;
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private DTDHandler _dtdHandler = null;
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private DeclHandler _declHandler = null;
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private Result _result = null;
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private Locator _locator = null;
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private boolean _done = false; // Set in endDocument()
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/**
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* A flag indicating whether this transformer handler implements the
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* identity transform.
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*/
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private boolean _isIdentity = false;
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/**
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* Cosntructor - pass in reference to a TransformerImpl object
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*/
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public TransformerHandlerImpl(TransformerImpl transformer) {
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// Save the reference to the transformer
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_transformer = transformer;
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if (transformer.isIdentity()) {
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// Set initial handler to the empty handler
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_handler = new DefaultHandler();
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_isIdentity = true;
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}
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else {
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// Get a reference to the translet wrapped inside the transformer
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_translet = _transformer.getTranslet();
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}
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}
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/**
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* Implements javax.xml.transform.sax.TransformerHandler.getSystemId()
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* Get the base ID (URI or system ID) from where relative URLs will be
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* resolved.
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* @return The systemID that was set with setSystemId(String id)
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*/
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public String getSystemId() {
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return _systemId;
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}
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/**
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* Implements javax.xml.transform.sax.TransformerHandler.setSystemId()
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* Get the base ID (URI or system ID) from where relative URLs will be
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* resolved.
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* @param id Base URI for this stylesheet
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*/
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public void setSystemId(String id) {
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_systemId = id;
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}
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/**
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* Implements javax.xml.transform.sax.TransformerHandler.getTransformer()
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* Get the Transformer associated with this handler, which is needed in
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* order to set parameters and output properties.
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* @return The Transformer object
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*/
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public Transformer getTransformer() {
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return _transformer;
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}
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/**
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* Implements javax.xml.transform.sax.TransformerHandler.setResult()
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* Enables the user of the TransformerHandler to set the to set the Result
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* for the transformation.
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* @param result A Result instance, should not be null
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* @throws IllegalArgumentException if result is invalid for some reason
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*/
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public void setResult(Result result) throws IllegalArgumentException {
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_result = result;
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if (null == result) {
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ErrorMsg err = new ErrorMsg(ErrorMsg.ER_RESULT_NULL);
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throw new IllegalArgumentException(err.toString()); //"result should not be null");
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}
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if (_isIdentity) {
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try {
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// Connect this object with output system directly
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SerializationHandler outputHandler =
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_transformer.getOutputHandler(result);
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_transformer.transferOutputProperties(outputHandler);
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_handler = outputHandler;
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_lexHandler = outputHandler;
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}
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catch (TransformerException e) {
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_result = null;
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}
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}
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else if (_done) {
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// Run the transformation now, if not already done
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try {
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_transformer.setDOM(_dom);
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_transformer.transform(null, _result);
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}
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catch (TransformerException e) {
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// What the hell are we supposed to do with this???
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throw new IllegalArgumentException(e.getMessage());
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}
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}
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}
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/**
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* Implements org.xml.sax.ContentHandler.characters()
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* Receive notification of character data.
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*/
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public void characters(char[] ch, int start, int length)
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throws SAXException
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{
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_handler.characters(ch, start, length);
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}
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/**
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* Implements org.xml.sax.ContentHandler.startDocument()
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* Receive notification of the beginning of a document.
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*/
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public void startDocument() throws SAXException {
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// Make sure setResult() was called before the first SAX event
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if (_result == null) {
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ErrorMsg err = new ErrorMsg(ErrorMsg.JAXP_SET_RESULT_ERR);
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throw new SAXException(err.toString());
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}
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if (!_isIdentity) {
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boolean hasIdCall = (_translet != null) ? _translet.hasIdCall() : false;
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XSLTCDTMManager dtmManager = null;
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// Create an internal DOM (not W3C) and get SAX2 input handler
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try {
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dtmManager =
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(XSLTCDTMManager)_transformer.getTransformerFactory()
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.getDTMManagerClass()
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.newInstance();
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} catch (Exception e) {
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throw new SAXException(e);
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}
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DTMWSFilter wsFilter;
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if (_translet != null && _translet instanceof StripFilter) {
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wsFilter = new DOMWSFilter(_translet);
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} else {
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wsFilter = null;
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}
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// Construct the DTM using the SAX events that come through
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_dom = (SAXImpl)dtmManager.getDTM(null, false, wsFilter, true,
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false, hasIdCall);
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_handler = _dom.getBuilder();
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_lexHandler = (LexicalHandler) _handler;
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_dtdHandler = (DTDHandler) _handler;
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_declHandler = (DeclHandler) _handler;
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// Set document URI
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_dom.setDocumentURI(_systemId);
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if (_locator != null) {
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_handler.setDocumentLocator(_locator);
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}
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}
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// Proxy call
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_handler.startDocument();
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}
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/**
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* Implements org.xml.sax.ContentHandler.endDocument()
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* Receive notification of the end of a document.
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*/
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public void endDocument() throws SAXException {
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// Signal to the DOMBuilder that the document is complete
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_handler.endDocument();
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if (!_isIdentity) {
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// Run the transformation now if we have a reference to a Result object
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if (_result != null) {
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try {
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_transformer.setDOM(_dom);
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_transformer.transform(null, _result);
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}
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catch (TransformerException e) {
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throw new SAXException(e);
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}
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}
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// Signal that the internal DOM is built (see 'setResult()').
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_done = true;
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// Set this DOM as the transformer's DOM
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_transformer.setDOM(_dom);
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}
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if (_isIdentity && _result instanceof DOMResult) {
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((DOMResult)_result).setNode(_transformer.getTransletOutputHandlerFactory().getNode());
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}
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}
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/**
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* Implements org.xml.sax.ContentHandler.startElement()
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* Receive notification of the beginning of an element.
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*/
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public void startElement(String uri, String localName,
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String qname, Attributes attributes)
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throws SAXException
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{
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_handler.startElement(uri, localName, qname, attributes);
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}
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/**
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* Implements org.xml.sax.ContentHandler.endElement()
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* Receive notification of the end of an element.
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*/
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public void endElement(String namespaceURI, String localName, String qname)
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throws SAXException
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{
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_handler.endElement(namespaceURI, localName, qname);
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}
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/**
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* Implements org.xml.sax.ContentHandler.processingInstruction()
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* Receive notification of a processing instruction.
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*/
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public void processingInstruction(String target, String data)
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throws SAXException
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{
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_handler.processingInstruction(target, data);
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}
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/**
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* Implements org.xml.sax.ext.LexicalHandler.startCDATA()
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*/
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public void startCDATA() throws SAXException {
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if (_lexHandler != null) {
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_lexHandler.startCDATA();
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}
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}
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/**
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* Implements org.xml.sax.ext.LexicalHandler.endCDATA()
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*/
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public void endCDATA() throws SAXException {
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if (_lexHandler != null) {
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_lexHandler.endCDATA();
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}
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}
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/**
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* Implements org.xml.sax.ext.LexicalHandler.comment()
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* Receieve notification of a comment
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*/
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public void comment(char[] ch, int start, int length)
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throws SAXException
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{
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if (_lexHandler != null) {
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_lexHandler.comment(ch, start, length);
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}
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}
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/**
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* Implements org.xml.sax.ContentHandler.ignorableWhitespace()
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* Receive notification of ignorable whitespace in element
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* content. Similar to characters(char[], int, int).
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*/
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public void ignorableWhitespace(char[] ch, int start, int length)
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throws SAXException
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{
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_handler.ignorableWhitespace(ch, start, length);
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}
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/**
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* Implements org.xml.sax.ContentHandler.setDocumentLocator()
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* Receive an object for locating the origin of SAX document events.
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*/
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public void setDocumentLocator(Locator locator) {
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_locator = locator;
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if (_handler != null) {
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_handler.setDocumentLocator(locator);
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}
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}
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/**
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* Implements org.xml.sax.ContentHandler.skippedEntity()
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* Receive notification of a skipped entity.
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*/
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public void skippedEntity(String name) throws SAXException {
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_handler.skippedEntity(name);
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}
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/**
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* Implements org.xml.sax.ContentHandler.startPrefixMapping()
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* Begin the scope of a prefix-URI Namespace mapping.
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*/
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public void startPrefixMapping(String prefix, String uri)
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throws SAXException {
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_handler.startPrefixMapping(prefix, uri);
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}
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/**
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* Implements org.xml.sax.ContentHandler.endPrefixMapping()
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* End the scope of a prefix-URI Namespace mapping.
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*/
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public void endPrefixMapping(String prefix) throws SAXException {
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_handler.endPrefixMapping(prefix);
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}
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/**
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* Implements org.xml.sax.ext.LexicalHandler.startDTD()
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*/
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public void startDTD(String name, String publicId, String systemId)
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throws SAXException
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{
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if (_lexHandler != null) {
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_lexHandler.startDTD(name, publicId, systemId);
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}
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}
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/**
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* Implements org.xml.sax.ext.LexicalHandler.endDTD()
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*/
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public void endDTD() throws SAXException {
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if (_lexHandler != null) {
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_lexHandler.endDTD();
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}
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}
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/**
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* Implements org.xml.sax.ext.LexicalHandler.startEntity()
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*/
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public void startEntity(String name) throws SAXException {
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if (_lexHandler != null) {
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_lexHandler.startEntity(name);
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}
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}
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/**
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* Implements org.xml.sax.ext.LexicalHandler.endEntity()
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*/
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public void endEntity(String name) throws SAXException {
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if (_lexHandler != null) {
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_lexHandler.endEntity(name);
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}
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}
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/**
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* Implements org.xml.sax.DTDHandler.unparsedEntityDecl()
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*/
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public void unparsedEntityDecl(String name, String publicId,
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String systemId, String notationName) throws SAXException
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{
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if (_dtdHandler != null) {
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_dtdHandler.unparsedEntityDecl(name, publicId, systemId,
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notationName);
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}
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}
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/**
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* Implements org.xml.sax.DTDHandler.notationDecl()
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*/
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public void notationDecl(String name, String publicId, String systemId)
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throws SAXException
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{
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if (_dtdHandler != null) {
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_dtdHandler.notationDecl(name, publicId, systemId);
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}
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}
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/**
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* Implements org.xml.sax.ext.DeclHandler.attributeDecl()
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*/
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public void attributeDecl(String eName, String aName, String type,
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String valueDefault, String value) throws SAXException
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{
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if (_declHandler != null) {
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_declHandler.attributeDecl(eName, aName, type, valueDefault, value);
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}
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|
438 |
}
|
|
439 |
|
|
440 |
/**
|
|
441 |
* Implements org.xml.sax.ext.DeclHandler.elementDecl()
|
|
442 |
*/
|
|
443 |
public void elementDecl(String name, String model)
|
|
444 |
throws SAXException
|
|
445 |
{
|
|
446 |
if (_declHandler != null) {
|
|
447 |
_declHandler.elementDecl(name, model);
|
|
448 |
}
|
|
449 |
}
|
|
450 |
|
|
451 |
/**
|
|
452 |
* Implements org.xml.sax.ext.DeclHandler.externalEntityDecl()
|
|
453 |
*/
|
|
454 |
public void externalEntityDecl(String name, String publicId, String systemId)
|
|
455 |
throws SAXException
|
|
456 |
{
|
|
457 |
if (_declHandler != null) {
|
|
458 |
_declHandler.externalEntityDecl(name, publicId, systemId);
|
|
459 |
}
|
|
460 |
}
|
|
461 |
|
|
462 |
/**
|
|
463 |
* Implements org.xml.sax.ext.DeclHandler.externalEntityDecl()
|
|
464 |
*/
|
|
465 |
public void internalEntityDecl(String name, String value)
|
|
466 |
throws SAXException
|
|
467 |
{
|
|
468 |
if (_declHandler != null) {
|
|
469 |
_declHandler.internalEntityDecl(name, value);
|
|
470 |
}
|
|
471 |
}
|
|
472 |
|
|
473 |
|
|
474 |
/** Implementation of the reset() method
|
|
475 |
*
|
|
476 |
*/
|
|
477 |
public void reset() {
|
|
478 |
_systemId = null;
|
|
479 |
_dom = null;
|
|
480 |
_handler = null;
|
|
481 |
_lexHandler = null;
|
|
482 |
_dtdHandler = null;
|
|
483 |
_declHandler = null;
|
|
484 |
_result = null;
|
|
485 |
_locator = null;
|
|
486 |
}
|
|
487 |
}
|