QGlobalWriter.hh

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#ifndef _Q_GLOBAL_WRITER_HH_
#define _Q_GLOBAL_WRITER_HH_
#include "QDiana.hh"
#include "QNamed.hh"
#include "QError.hh"
#include "QMessage.hh"
#include "QDemangle.hh"
#include "QGlobalRWFactory.hh"
#include <string>
 
 
namespace Diana {class QObject;}
 
 
class QGlobalWriter : public QNamed
{
    public:
        QGlobalWriter(const std::string& name) : QNamed(name) {}
 
        virtual ~QGlobalWriter() {}
 
        template<class Q> QError Set(const std::string& name, const Q& obj, const std::string& descr = "")
        {
            return SetQObject(name,Demangle(obj),&obj,descr);
        }
 
    protected:
        virtual QError SetQObject(const std::string& name, const std::string& className, const Diana::QObject* obj, const std::string& descr)  = 0;
 
        virtual QError Open(const std::string& filename, const std::string& opt = "") = 0;
 
        virtual QError Close() = 0;
 
        friend class QGlobalWriterDispatcher;
};
 
class QGlobalWriterFactory {
    public:
        QGlobalWriterFactory(const std::string& name, const std::string& ext) {fName = name; fExt = ext;}
        const std::string& GetName() const { return fName;} 
        const std::string& GetExt() const { return fExt;} 
        virtual ~QGlobalWriterFactory() {};
    private: 
        virtual QGlobalWriter* Create() = 0;
        std::string fName;
        std::string fExt;
        friend class QGlobalRWFactory;
};
 
 
#define CREATE_GOLBAL_WRITER_IMPL(clazz, ext) \
    class clazz ## Factory: public QGlobalWriterFactory{\
        public:\
        clazz ## Factory() : QGlobalWriterFactory(#clazz,ext) {}\
        QGlobalWriter *Create(){ return new clazz; }\
    };
 
#define REGISTER_GLOBAL_WRITER(clazz, ext) \
    CREATE_GOLBAL_WRITER_IMPL(clazz, ext);\
    extern "C" void registerInFactory ## clazz() {\
        QGlobalWriterFactory* pt = new clazz ## Factory;\
        QGlobalRWFactory::GetInstance().RegisterGlobalWriter(pt);\
    }
 
#endif