/data/refman/pasoursint/CMSSW_5_3_6/src/RecoBTag/XMLCalibration/interface/CalibrationXML.h

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#ifndef CALIBRATIONXML_H 
#define CALIBRATIONXML_H 

#include <xercesc/util/XMLString.hpp>
#include <xercesc/dom/DOM.hpp>
#include <xercesc/dom/DOMElement.hpp>
#include <string>
#include <sstream>
#include <xercesc/sax/HandlerBase.hpp>
#include <xercesc/parsers/XercesDOMParser.hpp>

class CalibrationXML  
{
public:
        typedef XERCES_CPP_NAMESPACE::DOMDocument DOMDocument;
        typedef XERCES_CPP_NAMESPACE::DOMElement DOMElement;
        typedef XERCES_CPP_NAMESPACE::DOMNode DOMNode;
        typedef XERCES_CPP_NAMESPACE::HandlerBase HandlerBase;
        typedef XERCES_CPP_NAMESPACE::XercesDOMParser XercesDOMParser;
        typedef XERCES_CPP_NAMESPACE::XMLPlatformUtils XMLPlatformUtils;
        typedef XERCES_CPP_NAMESPACE::XMLString XMLString;

        CalibrationXML();
        ~CalibrationXML();
        
        void openFile(const std::string & xmlFileName);

        void saveFile(const std::string & xmlFileName);


        void closeFile() 
        {
          if(errHandler) delete errHandler;
          if(parser) {  delete parser; XMLPlatformUtils::Terminate(); } 
          errHandler=0;
          parser=0;
        }       
        DOMElement * calibrationDOM() { return m_calibrationDOM;}


//Static function to make everything easier, less transcode and type conversion
           template <class T> static void writeAttribute(DOMElement *dom, const std::string & name, const T & value)
        {
            std::ostringstream buffer;
            buffer << value;
            XMLCh * nameStr = XMLString::transcode(name.c_str());
            XMLCh * valueStr = XMLString::transcode(buffer.str().c_str());
            dom->setAttribute(nameStr, valueStr );
            XMLString::release(&nameStr);
            XMLString::release(&valueStr);
        }

        template <class T> static T readAttribute(DOMElement *dom, const std::string & name)
        {
            XMLCh* nameStr  = XMLString::transcode(name.c_str());
            char * valueStr = XMLString::transcode(dom->getAttribute(nameStr));
            std::istringstream buffer(valueStr);
            T value;
            buffer >> value;
            XMLString::release(&nameStr);
            XMLString::release(&valueStr);
            return value;
        }
        
        static DOMElement * addChild(DOMNode *dom,const std::string & name);
                
private:
        std::string m_xmlFileName;
        DOMElement * m_calibrationDOM;
        DOMDocument* doc;
        HandlerBase* errHandler;
        XercesDOMParser *parser;
};
#endif