BDSpillAccessor.h

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#ifndef BDSPILLACCESSOR_H
#define BDSPILLACCESSOR_H

#include <DatabaseInterface/DbiResultPtr.h>
#include <DatabaseInterface/DbiResultKey.h>
#include <Validity/VldTimeStamp.h>

#include <BeamDataUtil/BeamMonSpill.h>

class BDSpillAccessor {

  static BDSpillAccessor* fInstance;
  
public:
     BDSpillAccessor();
    static BDSpillAccessor& Get();

    ~BDSpillAccessor();

    const BeamMonSpill* LoadSpill(VldTimeStamp vts, int which = 0);

private:

    // Return rows closest to context.
    void SeekClosest(const VldTimeStamp &vts,
                     const BeamMonSpill* &before,
                     const BeamMonSpill* &after); 

    // Searches current table with binary search.
    void TableSearch(DbiResultPtr<BeamMonSpill> &table,
                     const VldTimeStamp& vts, 
                     const BeamMonSpill* &before,
                     const BeamMonSpill* &after); 

    // Apply calibrations and corrections to the BeamMonSpill object
    // This belongs naturally to the BeamMonSpill class, but it has
    // been put here to avoid applying corrections more than once.
    // This guarantees that the corrections are applied when trying to
    // read the db and are applied only once.
    void CalibrateSpill(const BeamMonSpill* spill);

    DbiResultPtr<BeamMonSpill> *fPrevPtr, *fCenterPtr, *fNextPtr;
    DbiResultKey fResKey;
    bool fNeedNext, fNeedPrev;
};


#endif  // BDSPILLACCESSOR_H

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