/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/////////////////////////////////////////////////////////////////////
//                                                                 //
//  class AliCDBRunRange					   //
//  defines the run validity range of the object:		   //
//  [fFirstRun, fLastRun] 					   //
//                                                                 //
/////////////////////////////////////////////////////////////////////

#include "AliCDBRunRange.h"

#include "AliLog.h"

ClassImp(AliCDBRunRange)

//___________________________________________________________________________
AliCDBRunRange::AliCDBRunRange():
  fFirstRun(-1), 
  fLastRun(-1)
{
  // constructor

}

//___________________________________________________________________________
AliCDBRunRange::AliCDBRunRange(Int_t firstRun, Int_t lastRun):
  fFirstRun(firstRun), 
  fLastRun(lastRun)
{
  // constructor

}

//___________________________________________________________________________
AliCDBRunRange::~AliCDBRunRange() {
  // destructor

}

//___________________________________________________________________________
Bool_t AliCDBRunRange::Overlaps(const AliCDBRunRange& other) const {
  // check if this runRange overlaps other runRange

  if (!(IsValid() && other.IsValid())) {
    AliError("Comparing invalid run ranges!");
    return kFALSE;
  }	

  if (IsAnyRange() || other.IsAnyRange()) {
    AliError("Comparing unspecified ranges!");
    return kFALSE;
  }

  return ((fFirstRun < other.fFirstRun && other.fFirstRun <= fLastRun)
      || (other.fFirstRun <= fFirstRun && fFirstRun <= other.fLastRun));
}

//___________________________________________________________________________
Bool_t AliCDBRunRange::Comprises(const AliCDBRunRange& other) const {
  // check if this runRange contains other runRange

  if (!(IsValid() && other.IsValid())) {
    AliError("Comparing invalid run ranges!");
    return kFALSE;
  }	

  if (IsAnyRange()) {
    return kTRUE;
  }

  return fFirstRun <= other.fFirstRun && other.fFirstRun <= fLastRun
    && fFirstRun <= other.fLastRun && other.fLastRun <= fLastRun;
}

//___________________________________________________________________________
Bool_t AliCDBRunRange::IsEqual(const TObject* obj) const {
  // check if this runRange is equal to other runRange

  if (this == obj) {
    return kTRUE;
  }

  if (AliCDBRunRange::Class() != obj->IsA()) {
    return kFALSE;
  }
  AliCDBRunRange* other = (AliCDBRunRange*) obj;
  return fFirstRun == other->fFirstRun && fLastRun == other->fLastRun;
}

//___________________________________________________________________________
Bool_t AliCDBRunRange::IsValid() const {
  // validity check

  if (fFirstRun < 0 && fLastRun < 0) {
    return kTRUE;
  }

  if (fFirstRun >= 0 && fLastRun >= fFirstRun) {
    return kTRUE;
  }

  return kFALSE;
}