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XMLDeSerializer.cpp

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00001 /* -*- C++ -*- */
00002 
00003 /*
00004  * The Apache Software License, Version 1.1
00005  *
00006  *
00007  * Copyright (c) 2002 The Apache Software Foundation.  All rights
00008  * reserved.
00009  *
00010  * Redistribution and use in source and binary forms, with or without
00011  * modification, are permitted provided that the following conditions
00012  * are met:
00013  *
00014  * 1. Redistributions of source code must retain the above copyright
00015  *    notice, this list of conditions and the following disclaimer.
00016  *
00017  * 2. Redistributions in binary form must reproduce the above copyright
00018  *    notice, this list of conditions and the following disclaimer in
00019  *    the documentation and/or other materials provided with the
00020  *    distribution.
00021  *
00022  * 3. The end-user documentation included with the redistribution,
00023  *    if any, must include the following acknowledgment:
00024  *       "This product includes software developed by the
00025  *        Apache Software Foundation (http://www.apache.org/)."
00026  *    Alternately, this acknowledgment may appear in the software itself,
00027  *    if and wherever such third-party acknowledgments normally appear.
00028  *
00029  * 4. The names "SOAP" and "Apache Software Foundation" must
00030  *    not be used to endorse or promote products derived from this
00031  *    software without prior written permission. For written
00032  *    permission, please contact apache@apache.org.
00033  *
00034  * 5. Products derived from this software may not be called "Apache",
00035  *    nor may "Apache" appear in their name, without prior written
00036  *    permission of the Apache Software Foundation.
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00038  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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00044  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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00050  * ====================================================================
00051  *
00052  * This software consists of voluntary contributions made by many
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00056  */
00057 
00058 /*
00059  *
00060  *
00061  * @author Lilantha Darshana (lilantha@erunway.com)
00062  *
00063  */
00064 #include "Platform.hpp"
00065 #include <iostream>
00066 #include <cstdio>
00067 #include "XMLDeSerializer.hpp"
00068 
00069 #include <xercesc/util/PlatformUtils.hpp>
00070 #include <xercesc/util/XMLUniDefs.hpp>
00071 #include <xercesc/util/XMLException.hpp>
00072 #include <xercesc/util/TranscodingException.hpp>
00073 #include <xercesc/dom/DOM_DOMException.hpp>
00074 #include <xercesc/parsers/DOMParser.hpp>
00075 #include <xercesc/framework/MemBufInputSource.hpp>
00076 #include "TypeMappingRegistry.hpp"
00077 
00078 
00079 XMLDeSerializer::XMLDeSerializer(const std::string& p_Msg) : m_pTypeMapper(0)
00080 {
00081     try
00082     {
00083         XMLPlatformUtils::Initialize();
00084     }
00085     catch (const XMLException& )
00086     {
00087         //TODO: need to handle exception 
00088     }
00089 
00090     parser = new DOMParser;
00091     parser->setValidationScheme(DOMParser::Val_Auto);
00092     parser->setDoNamespaces(true);
00093     parser->setDoSchema(false);
00094     parser->setValidationSchemaFullChecking(false);
00095     errReporter = new ParseErrorHandler();
00096     parser->setErrorHandler(errReporter);
00097     parser->setCreateEntityReferenceNodes(false);
00098     parser->setToCreateXMLDeclTypeNode(true);
00099 
00100     MemBufInputSource* memBufIS = new MemBufInputSource ((const XMLByte*) p_Msg.c_str(),
00101                                                           p_Msg.size(), "msg", false);
00102     bool errorsOccured = false;
00103     try
00104     {
00105         parser->parse(*memBufIS);
00106         int errorCount = parser->getErrorCount();
00107         if (errorCount > 0)
00108         {
00109             errorsOccured = true;
00110             m_pCurNode = NULL;
00111         }
00112     }
00113     catch (const XMLException& e)
00114     {
00115         //TODO: need to handle exception 
00116         std::cerr << "An error occured during parsing\n   Message: "
00117             << DOMString(e.getMessage()).transcode() << std::endl;
00118         errorsOccured = true;
00119     }
00120     catch (const DOM_DOMException& e)
00121     {
00122         //TODO: need to handle exception 
00123         std::cerr << "A DOM error occured during parsing\n   DOMException code: "
00124             << e.code << std::endl;
00125         errorsOccured = true;
00126     }
00127     catch (...)
00128     {
00129         //TODO: need to handle exception 
00130         std::cerr << "An error occured during parsing\n " << std::endl;
00131         errorsOccured = true;
00132     }
00133 
00134 
00135     if(!errorsOccured)
00136     {
00137         m_pCurNode = parser->getDocument();
00138     }
00139     else
00140         m_pCurNode = NULL;
00141 }
00142 
00143 
00144 XMLDeSerializer::~XMLDeSerializer()
00145 {
00146      // call the termination method
00147     XMLPlatformUtils::Terminate();
00148 }
00149 
00150 
00151 void XMLDeSerializer::DeSerialize(MessageElement& p_Elm)
00152 {
00153     ax::QName qName = p_Elm.GetElmQName();
00154     std::string strQName = QNameToStr(qName);
00155     DOM_NodeList list = ((DOM_Document&)m_pCurNode).getElementsByTagName(strQName.c_str());
00156 
00157     unsigned int nNodeCnt = list.getLength();
00158 
00159     for(int i=0;i<nNodeCnt;i++)
00160     {
00161         DOM_Element data = (const DOM_Element&) list.item(i);
00162     
00163         DOM_Node child;
00164         for (child=data.getFirstChild(); child != 0; child= child.getNextSibling())
00165         {
00166             if(child.getNodeType() == DOM_Node::ELEMENT_NODE)
00167                 p_Elm.AddMsgElement((DOM_Element&)child);
00168         }
00169     }
00170 }
00171 
00172 
00173 ax::QName XMLDeSerializer::GetQNameFromStr(std::string strQName)
00174 {
00175     std::string::size_type pos = strQName.find(':');
00176     if (pos == std::string::npos) return ax::QName();
00177     
00178     std::string nsURI = m_nsStk.GetNamespaceURI(strQName.substr(0, pos));
00179     
00180     return ax::QName(nsURI, strQName.substr(++pos));
00181 }
00182 
00183 void XMLDeSerializer::RegisterPrefixForURI(const std::string& prefix, const std::string& uri)
00184 {
00185     m_nsStk.Add(uri, prefix);
00186 }
00187 
00188 std::string XMLDeSerializer::QNameToStr(ax::QName& qName)
00189 {
00190     std::string prefix = m_nsStk.GetPrefix(qName.GetNsURI());
00191     return ((!prefix.empty())?(prefix + ":"): std::string("")) + qName.GetLocalPart();
00192 }
00193 
00194 
00195 
00196 void ParseErrorHandler::error(const SAXParseException& e)
00197 {
00198     //TODO: need to handle errors 
00199     fprintf(stderr, "\nError at file \"%s\", line %d, char %d:  %s\n",
00200         XMLString::transcode(e.getSystemId()), e.getLineNumber(),
00201         e.getColumnNumber(), XMLString::transcode(e.getMessage()));
00202     throw e;
00203 
00204 };
00205 
00206 void ParseErrorHandler::fatalError(const SAXParseException& e)
00207 {
00208     //TODO: need to handle errors 
00209     fprintf(stderr, "\nFatal Error at file \"%s\", line %d, char %d:  %s\n",
00210         XMLString::transcode(e.getSystemId()), e.getLineNumber(),
00211         e.getColumnNumber(), XMLString::transcode(e.getMessage()));
00212     throw e;
00213 };
00214 
00215 void ParseErrorHandler::warning(const SAXParseException& e)
00216 {
00217     //TODO: need to handle errors 
00218     fprintf(stderr, "\nWarning at file \"%s\", line %d, char %d:  %s\n",
00219         XMLString::transcode(e.getSystemId()), e.getLineNumber(),
00220         e.getColumnNumber(), XMLString::transcode(e.getMessage()));
00221     throw e;
00222 
00223 };
00224 
00225 
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