#ifndef DBIEXCEPTIONLOG
#define DBIEXCEPTIONLOG


//////////////////////////////////////////////////////////////////////////
////////////////////////////     ROOT API     ////////////////////////////
//////////////////////////////////////////////////////////////////////////

/**
 *
 * $Id: IDbiExceptionLog.hxx,v 1.1 2011/01/18 05:49:19 finch Exp $
 *
 * \class COMET::IDbiExceptionLog
 *
 *
 * \brief
 * <b>Concept</b> An object that records database exceptions
 *
 * \brief
 * <b>Purpose</b>To provide a place to record (in memory) exceptions from the time
 * they arise in the lower levels of the DBI and below until they can be
 * analysed in the upper levels of the DBI and beyond. They are stored in a std::vector 
 * of COMET::IDbiException s
 *
 * Contact: A.Finch@lancaster.ac.uk
 *
 *
 */

#include <iosfwd>
#include <string>
#include <vector>

#include "Rtypes.h"

#include "IDbiException.hxx"

class TSQLServer;
class TSQLStatement;
namespace COMET {
class IDbiExceptionLog;
}

std::ostream& operator<<(std::ostream& s, const COMET::IDbiExceptionLog& el);

namespace COMET {
class IDbiExceptionLog

{

public:
           IDbiExceptionLog(const IDbiException* e = 0);
  virtual ~IDbiExceptionLog();

// State testing member functions

    Bool_t IsEmpty() const { return fEntries.size() == 0; }
const std::vector<COMET::IDbiException>&
           GetEntries() const { return fEntries; }
      void Print() const;
    UInt_t Size() const { return fEntries.size(); }
      void Copy(IDbiExceptionLog& that, UInt_t start=0) const;

// State changing member functions

 void AddLog(const IDbiExceptionLog& el);
 void AddEntry(const IDbiException& e) { fEntries.push_back(e); }
 void AddEntry(const char* errMsg, Int_t code = -1) {
   this->AddEntry(IDbiException(errMsg,code));}
 void AddEntry(const std::string& errMsg, Int_t code = -1) {
   this->AddEntry(IDbiException(errMsg.c_str(),code));}
 void AddEntry(const TSQLServer& server) {
   this->AddEntry(IDbiException(server));}
 void AddEntry(const TSQLStatement& statement) {
   this->AddEntry(IDbiException(statement));}
 void Clear() { fEntries.clear(); }

// The Global Exception Log
 static IDbiExceptionLog& GetGELog() { return fgGELog;}

 private:


// Data members

private:

/// The exception entries.
  std::vector<IDbiException> fEntries;

 /// Global Exception Log
   static IDbiExceptionLog fgGELog;

 ClassDef(IDbiExceptionLog,0) // Object to hold database exceptions

};
};

#endif // DBIEXCEPTIONLOG