StTamuRelLum.h

//StTamuRelLum.h
//M.L. Miller (MIT)
//10/05

//This file contains necessary classes to read/store/access Ernst Sichterman's (Es) Relative Luminosity file

#ifndef StTamuRelLum_HH
#define StTamuRelLum_HH
#ifdef __ROOT__
#include "Rtypes.h"
#endif

#include <iostream>
#include <fstream>
#include <string>
#include <map>
using namespace std;

/* note, Ernst's definitions are as follows:

#R1=UpUp+UpDw/DwDw+DwUp R2=UpUp+DwUp/DwDw+UpDw R3=UpUp+DwDw/UpDw+DwUp R4=UpUp/DwDw R5=UpDw/DwDw R6=DwUp/DwDw Board11[R[i],eR[i]]

*/
struct TamuRelLum
{
        //Star RunNumber
        int runId;
        
        //fill
        int fill;
        
        //scaler board number
        int board;
        
        //bbc time bin
        int bbcTimeBin;
        
        //The N-counts as a function of spin-state (YB)
        int uu;
        int du;
        int ud;
        int dd; 
};

//This is needed for internal storage
struct TamuRelLumLessThan
{
        bool operator()(const TamuRelLum& lhs, const TamuRelLum& rhs) const;
};

//Class StTamuRelLum is a singleton class to read/store/access 

class StTamuRelLum
{
public:
        //here's the map typedef
        typedef map<TamuRelLum, TamuRelLum, TamuRelLumLessThan> RelLumMap;

        //here's access to the one global instance
        static StTamuRelLum* instance(const string infile = "StRoot/StSpinPool/StTamuRelLum/inputs/run6.txt");

        //Print the contents of the map to screen
        void print();

        //Access to the information for a given run:
        //NOTE: test the pointer!  If it is null, that means theres no entry for this run
        const TamuRelLum* getRelLum(int runId, int board, int timeBin);

private:

        //the map:
        RelLumMap mMap;

        //This is the static instance
        static StTamuRelLum* sInstance;

        virtual ~StTamuRelLum();

private:
        StTamuRelLum( const string infile ); //We make the constructor private for singleton access
        
        #ifdef __ROOT__
    ClassDef(StTamuRelLum,1)
    #endif
};


inline StTamuRelLum* StTamuRelLum::instance(const string infile)
{
        return (sInstance) ? sInstance : new StTamuRelLum(infile);
}


inline ostream& operator<<(ostream& os, const TamuRelLum& rl)
{
        os <<"run:\t"<<rl.runId<<" fill:\t"<<rl.fill<<" board:\t"<<rl.board<<" bin:\t"<<rl.bbcTimeBin
        <<" uu:\t"<<rl.uu<<" du:\t"<<rl.du<<" ud:\t"<<rl.ud<<" dd:\t"<<rl.dd;
        return os;
}
#endif