3 //_________________________________________________________________________
4 ///////////////////////////////////////////////////////////////////////////
8 // Reader Base class (reads particles and tracks and
9 // puts it to the AliHBTRun objects
11 // Piotr.Skowronski@cern.ch
12 ///////////////////////////////////////////////////////////////////////////
15 #include <TObjArray.h>
19 class AliHBTParticleCut;
24 class AliHBTReader: public TNamed
28 AliHBTReader(TObjArray*);
29 AliHBTReader(const AliHBTReader& in);
30 virtual ~AliHBTReader();
32 AliHBTReader& operator=(const AliHBTReader& in);
35 virtual void Rewind() = 0; //
37 virtual Bool_t ReadsTracks() const = 0; //specifies if reader is able to read simulated particles
38 virtual Bool_t ReadsParticles() const = 0;//specifies if reader is able to read reconstructed tracks
40 void AddParticleCut(AliHBTParticleCut* cut);
42 virtual Int_t Read(AliHBTRun* particles, AliHBTRun *tracks);
44 virtual AliHBTEvent* GetParticleEvent() {return fParticlesEvent;}//can not be const because position randomizer overloads it
45 virtual AliHBTEvent* GetTrackEvent() {return fTracksEvent;}//
47 virtual AliHBTEvent* GetParticleEvent(Int_t n);
48 virtual AliHBTEvent* GetTrackEvent(Int_t n);
50 virtual Int_t GetNumberOfPartEvents();
51 virtual Int_t GetNumberOfTrackEvents();
53 void SetDirs(TObjArray* dirs){fDirs = dirs;} //sets array directories names
54 void SetEventBuffering(Bool_t flag){fBufferEvents = flag;}//switches on/off buffering - read data are kept in local buffer
55 void SetBlend(Bool_t flag = kTRUE){fBlend=flag;} //set blending - randomizing particle order
56 virtual Int_t GetNumberOfDirs() const {return (fDirs)?fDirs->GetEntries():0;}
57 void ReadEventsFromTo(Int_t first,Int_t last){fFirst = first; fLast = last;}
58 virtual TH1I* GetTrackCounter() const {return fTrackCounter;}
59 virtual void WriteTrackCounter() const;
63 TObjArray* fCuts;//array with particle cuts
64 TObjArray* fDirs;//arry with directories to read data from
66 Int_t fCurrentEvent;//! number of current event in current directory
67 Int_t fCurrentDir;//! number of current directory
69 Int_t fNEventsRead;//!total
71 AliHBTEvent* fTracksEvent; //! tracks read from current event
72 AliHBTEvent* fParticlesEvent; //! particles read from current event
74 AliHBTRun* fParticles; //!simulated particles
75 AliHBTRun* fTracks; //!reconstructed tracks (particles)
77 Bool_t fIsRead;//!flag indicating if the data are already read
78 Bool_t fBufferEvents;//flag indicating if the data should be bufferred
80 Bool_t fBlend;// flag indicating if randomly change positions of the particles after reading
82 Int_t fFirst;//first event to return (all are before are skipped)
85 TH1I* fTrackCounter; //histogram with number of tracks read
87 virtual Int_t ReadNext() = 0; //this methods reads next event and put result in fTracksEvent and/or fParticlesEvent
88 Bool_t Rejected(AliHBTParticle* p);
89 Bool_t Rejected(Int_t pid);
92 TString& GetDirName(Int_t entry);
96 ClassDef(AliHBTReader,4)//version 2 - TNamed as parental class
97 //version 3 - Blending added