PWG2/RESONANCES/AliRsnTarget.h

   1 //
   2 // *** Class AliRsnTarget ***
   3 //
   4 // Base class used wherever it is needed to check the class type of
   5 // an object (daughter, mother, event) which could be used for
   6 // cut checking or value computing.
   7 // Since most of these operation are implemented into classes that
   8 // operate on any of such objects, then this class helps in making sure
   9 // that the object being processed corresponds to what is expected.
  10 //
  11
  12 #ifndef ALIRSNTARGET_H
  13 #define ALIRSNTARGET_H
  14
  15 #include "TNamed.h"
  16
  17 #include "AliRsnEvent.h"
  18
  19 class AliRsnDaughter;
  20 class AliRsnMother;
  21
  22 class AliRsnTarget : public TNamed
  23 {
  24   public:
  25
  26     enum ETargetType
  27     {
  28       kDaughter,
  29       kMother,
  30       kEvent,
  31       kTargetTypes
  32     };
  33
  34     AliRsnTarget() : fTargetType(kTargetTypes), fDaughter(0x0), fMother(0x0), fEvent(0x0) { /*nothing*/ }
  35     AliRsnTarget(const char *name, ETargetType type) : TNamed(name, ""), fTargetType(type), fDaughter(0x0), fMother(0x0), fEvent(0x0) { /*nothing*/ }
  36     AliRsnTarget(const AliRsnTarget& copy) : TNamed(copy), fTargetType(copy.fTargetType), fDaughter(0x0), fMother(0x0), fEvent(0x0) { /*nothing*/ }
  37     AliRsnTarget& operator=(const AliRsnTarget& copy) { TNamed::operator=(copy); fTargetType = copy.fTargetType; fDaughter = 0x0; fMother = 0x0; fEvent = 0x0; return (*this); }
  38     virtual ~AliRsnTarget() { /*nothing*/ }
  39
  40     Bool_t           IsTarget(ETargetType targetType)  {return (fTargetType == targetType);}
  41     ETargetType      GetTargetType() const             {return fTargetType;}
  42     Char_t           GetTargetTypeChar() const;
  43     const char*      GetTargetTypeName() const;
  44     void             SetTargetType(ETargetType type)   {fTargetType = type;}
  45     Bool_t           TargetOK(TObject *object);
  46     AliRsnDaughter*  GetTargetDaughter()               {return fDaughter;}
  47     AliRsnMother*    GetTargetMother()                 {return fMother;}
  48     AliRsnEvent*     GetTargetEvent()                  {return fEvent;}
  49
  50     static AliRsnEvent*  GetCurrentEvent()                   {return fgCurrentEvent;}
  51     static void          SetCurrentEvent(AliRsnEvent *event) {fgCurrentEvent = event;}
  52     static void          SwitchToFirst()                     {fgCurrentEvent = AliRsnEvent::GetCurrentEvent1();}
  53     static void          SwitchToSecond()                    {fgCurrentEvent = AliRsnEvent::GetCurrentEvent2();}
  54
  55   protected:
  56
  57     ETargetType         fTargetType;     //  target type selected for this object
  58     static AliRsnEvent *fgCurrentEvent;  //! pointer to current event (useful in many cases)
  59
  60     AliRsnDaughter     *fDaughter;       //  utility pointer to target object (daughter)
  61     AliRsnMother       *fMother;         //  utility pointer to target object (mother)
  62     AliRsnEvent        *fEvent;          //  utility pointer to target object (event)
  63
  64     static const Double_t fgkVeryBig;    //  utility value for very large value
  65     static const Double_t fgkVerySmall;  //  utility value for very small value
  66
  67     // ROOT dictionary
  68     ClassDef(AliRsnTarget, 1)
  69 };
  70
  71 typedef AliRsnTarget::ETargetType RSNTARGET;
  72
  73 #endif