// $Id: IDbiTimer.hxx,v 1.1 2011/01/18 05:49:20 finch Exp $

#ifndef DBITIMER
#define DBITIMER

////////////////////////////////////////////////////////////////////////
/// \class COMET::IDbiTimer                                                           
///                                                   
///                                                                    
/// \brief <b> Concept: </b> Simple timer, record query progress and final times.       
///                                                                    
/// <b> Purpose: </b> To find out why this is all soooo sssllloooowwww!         
///                                                                    
////////////////////////////////////////////////////////////////////////

#include <string>

#include "TStopwatch.h"
#include "IDbiFieldType.hxx"

namespace COMET {
class IDbiTableMetaData;
}

namespace COMET {
class IDbiTimer
{

public:

// Constructors and destructors.
           IDbiTimer();
  virtual ~IDbiTimer();

// State testing member functions

// State changing member functions
    void RecBegin(string tableName, UInt_t rowSize);
    void RecEnd(UInt_t numRows);
    void RecFillAgg(Int_t aggNo);
    void RecMainQuery();
    void Resume();
    void StartSubWatch(UInt_t subWatch);
    void Suspend();

// Global timer used for all queries to the DBI.

private:

 enum  QueryStage { kPassive, kInitialQuery, kMainQuery };
 enum { kMaxSubWatch = 4 };  // Must be > 0.

// Data members

       Int_t fCurSubWatch; // Current SubWatch or -1 if disabled.
      UInt_t fRowSize;     // Size of row object
  QueryStage fQueryStage;  // Query stage
  TStopwatch fSubWatches[kMaxSubWatch]; // Partial timers
      string fTableName;   // Current table
  TStopwatch fWatch;       // Timer

 ClassDef(IDbiTimer,0)     // Simple query timer

};
};


#endif // DBITIMER