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 }
  63
  64 //_____________________________________________________________________________
  65 const TCollection*
  66 AliMUON2DMapIterator::GetCollection() const
  67 {
  68   /// Return 0 as we're not really dealing with a Root TCollection...
  69   return 0x0;
  70 }
  71
  72 //_____________________________________________________________________________
  73 TIterator*
  74 AliMUON2DMapIterator::NextIterator()
  75 {
  76   /// Get next map (from fIter1) and create an iterator to it
  77
  78   AliMpExMap* m = static_cast<AliMpExMap*>(fIter1->Next());
  79
  80   if (!m) return 0x0;
  81
  82   return m->CreateIterator();
  83 }
  84
  85 //_____________________________________________________________________________
  86 TObject*
  87 AliMUON2DMapIterator::Next()
  88 {
  89   /// return next object
  90
  91   if (!fIter2) return 0x0;
  92
  93   TObject* o = fIter2->Next();
  94
  95   if (!o)
  96   {
  97     fIter2 = NextIterator();
  98     return Next();
  99   }
 100
 101   return o;
 102 }
 103
 104 //_____________________________________________________________________________
 105 void
 106 AliMUON2DMapIterator::Reset()
 107 {
 108   /// rewind the iterator
 109
 110   delete fIter2;
 111   fIter1->Reset();
 112   fIter2 = NextIterator();
 113 }
 114