MUON/AliMUON2DMapIterator.cxx

   1 /**************************************************************************
   2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3 *                                                                        *
   4 * Author: The ALICE Off-line Project.                                    *
   5 * Contributors are mentioned in the code where appropriate.              *
   6 *                                                                        *
   7 * Permission to use, copy, modify and distribute this software and its   *
   8 * documentation strictly for non-commercial purposes is hereby granted   *
   9 * without fee, provided that the above copyright notice appears in all   *
  10 * copies and that both the copyright notice and this permission notice   *
  11 * appear in the supporting documentation. The authors make no claims     *
  12 * about the suitability of this software for any purpose. It is          *
  13 * provided "as is" without express or implied warranty.                  *
  14 **************************************************************************/
  15
  16 // $Id$
  17
  18 #include "AliMUON2DMapIterator.h"
  19
  20 //-----------------------------------------------------------------------------
  21 /// \class AliMUON2DMapIterator
  22 /// Implementation of TIterator for 2Dmaps
  23 ///
  24 /// A simple implementation of VDataIterator for 2Dmaps.
  25 ///
  26 /// \author Laurent Aphecetche
  27 //-----------------------------------------------------------------------------
  28
  29 #include "AliMpExMap.h"
  30 #include "AliMpExMapIterator.h"
  31 #include "AliLog.h"
  32
  33 /// \cond CLASSIMP
  34 ClassImp(AliMUON2DMapIterator)
  35 /// \endcond
  36
  37 //_____________________________________________________________________________
  38 AliMUON2DMapIterator::AliMUON2DMapIterator(const AliMpExMap& theMap)
  39 : TIterator(),
  40 fkMap(&theMap),
  41 fIter1(theMap.CreateIterator()),
  42 fIter2(NextIterator())
  43 {
  44   /// default ctor
  45   Reset();
  46 }
  47
  48 //_____________________________________________________________________________
  49 AliMUON2DMapIterator&
  50 AliMUON2DMapIterator::operator=(const TIterator& /*rhs*/)
  51 {
  52   // overriden operator= (imposed by Root's definition of TIterator::operator= ?)
  53
  54   AliFatalGeneral("operator=(TIterator&)",""); // as in copy ctor
  55   return *this;
  56 }
  57
  58 //_____________________________________________________________________________
  59 AliMUON2DMapIterator::~AliMUON2DMapIterator()
  60 {
  61   /// dtor
  62   delete fIter1;
  63   delete fIter2;
  64 }
  65
  66 //_____________________________________________________________________________
  67 const TCollection*
  68 AliMUON2DMapIterator::GetCollection() const
  69 {
  70   /// Return 0 as we're not really dealing with a Root TCollection...
  71   return 0x0;
  72 }
  73
  74 //_____________________________________________________________________________
  75 TIterator*
  76 AliMUON2DMapIterator::NextIterator()
  77 {
  78   /// Get next map (from fIter1) and create an iterator to it
  79
  80   AliMpExMap* m = static_cast<AliMpExMap*>(fIter1->Next());
  81
  82   if (!m) return 0x0;
  83
  84   return m->CreateIterator();
  85 }
  86
  87 //_____________________________________________________________________________
  88 TObject*
  89 AliMUON2DMapIterator::Next()
  90 {
  91   /// return next object
  92
  93   if (!fIter2) return 0x0;
  94
  95   TObject* o = fIter2->Next();
  96
  97   if (!o)
  98   {
  99     delete fIter2;
 100     fIter2 = NextIterator();
 101     return Next();
 102   }
 103
 104   return o;
 105 }
 106
 107 //_____________________________________________________________________________
 108 void
 109 AliMUON2DMapIterator::Reset()
 110 {
 111   /// rewind the iterator
 112
 113   delete fIter2;
 114   fIter1->Reset();
 115   fIter2 = NextIterator();
 116 }
 117