HvStatusFinder.h

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#ifndef HVSTATUSFINDER_H
#define HVSTATUSFINDER_H
 
#include "DatabaseInterface/DbiResultPtr.h"
#include "Validity/VldContext.h"

#include "DbuHvFromSingles.h"
#include "HvStatus.h"
 
#include "TObject.h"
 
class HvStatusFinder : public TObject {
 
 public:
  static HvStatusFinder& Instance();
 
  virtual ~HvStatusFinder();

  HvStatus::HvStatus_t GetHvStatus(const VldContext& context, Int_t window=60, Int_t task=1);

 private:
  HvStatusFinder();

  DbiResultPtr<DbuHvFromSingles> fHvTable;
     
  Int_t fTask;
  Int_t fWindow;

  Int_t fMinTime;
  Int_t fMaxTime;
  Int_t fMinTimeExt;
  Int_t fMaxTimeExt;

  HvStatus::HvStatus_t fStatus;

  HvStatus::HvStatus_t kStatusNearOK;
  HvStatus::HvStatus_t kStatusFarOK;

  void ExtendedQuery(const VldContext& context);
  void LocalQuery(const VldContext& context);
  void Reset();

  // Cleaner struct used to clean up singleton at end of job
  struct Cleaner {
    void UseMe() { }                  
    ~Cleaner() {
      if( HvStatusFinder::fMyInstance != 0 ){
        delete HvStatusFinder::fMyInstance;
        HvStatusFinder::fMyInstance = 0;
      } 
    }
  };
  friend struct Cleaner;
  static HvStatusFinder* fMyInstance;

  ClassDef(HvStatusFinder,1)
};

#endif

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