HRootSource

class HRootSource : public HDataSource

    protected:

               Bool_t fileExists(const TString& name)
       virtual TFile* getFile(TString name)
      virtual TString getFileName(Text_t* file)

    public:

                            HRootSource(Bool_t fPersistent = kTRUE, Bool_t fMerge = kFALSE)
                            HRootSource(const HRootSource&)
                            ~HRootSource()
                     Bool_t addFile(Text_t* file)
             static TClass* Class()
                       void Clear()
                       void deactivateBranch(Text_t* branchName)
                     Bool_t disableCategory(Cat_t aCat)
                     Bool_t disablePartialEvent(Cat_t aCat)
             virtual Bool_t finalize()
      virtual const Text_t* getCurrentFileName() const
              virtual Int_t getCurrentRefId()
              virtual Int_t getCurrentRunId()
                     Bool_t getEvent(Int_t eventN)
                      Int_t getGlobalRefId()
           virtual EDsState getNextEvent(Bool_t doUnpack = kTRUE)
                      Int_t getSplitLevel()
                     TTree* getTree()
             virtual Bool_t init()
            virtual TClass* IsA() const
               HRootSource& operator=(const HRootSource&)
                       void Print()
             virtual Bool_t reinit()
                       void replaceHeaderVersion(Int_t vers, Bool_t replace = kTRUE)
             virtual Bool_t rewind()
                       void setDirectory(Text_t* dirName)
                       void setEventList(TEventList* el)
                       void setGlobalRefId(Int_t refId)
                     Bool_t setInput(Text_t* fileName, Text_t* treeName)
                       void setRefId(Int_t runId, Int_t refId)
               virtual void ShowMembers(TMemberInspector& insp, char* parent)
           virtual EDsState skipEvents(Int_t nEv)
               virtual void Streamer(TBuffer& b)
                       void StreamerNVirtual(TBuffer& b)

Data Members

    protected:

               TChain* fInput            TTree to be read.
               TString fDirectory        
                Stat_t fEntries          
                Bool_t fPersistency      
                Bool_t fMerge            
                 Int_t fCursor           Number of next event.
                 Int_t fSplitLevel       Split level of input tree
                 Int_t fCurrentRunId     
                 Int_t fCurrentRefId     
                 Int_t fGlobalRefId      
      map<Int_t,Int_t> fRefIds           !
               HEvent* fEventInFile      ! Pointer to the event structure in file
           TEventList* fEventList        
                 Int_t fLastRunId        ! last run number (needed to detect switch to new run)
                Bool_t overwriteVersion  ! flag for modifying version
                 Int_t replaceVersion    ! value for replacing version is overwriteVersion=kTRUE

Class Description

 HRootSource

 This data source can read data from a ROOT file generated by
 HYDRA, this includes both the reconstruction and simulation software.

 The data source takes care of instantiating the appropriate classes even
 if they are non-standard. That is, if you have an input file with
 HMdcHitSim instead of HMdcHit; HRootSource will take care of using
 HMdcHitSim during the analysis.

 for fPers==kFALSE, input cats are suppressed in output
 for fMerg==kTRUE, partial events in input tree are merged into current
 event, if it exists already at init().

Class destructor, it clears the data source.

 Initializes the data source connecting the parts of the input tree in
 the input ROOT file to the event structure used for the analysis. If
 no event structure has been set by the user, HRootSource::init() will
 set one read from the input file. If it exists, it will be used as such
 (fMerge==kFALSE) or merged with the one in the input file (fMerge==kTRUE).

Retrieves next event in the input file.

Retrieves event in position eventN in the input file, copying the
information to the event structure.

Closes the input file.

Sets the directory where to read files from.

Checks for the existence on one file.

Sets the input file and tree. Opening the corresponding files, it also
loads in memory the input event description so the disableCategory()
method can be used.

Disables the category aCat so it is not read even if it is stored in
the input file. This method shouldn't be called after init()
Returns kTRUE if the aCat was stored in the input file and has succesfully
been disabled, otherwise the return value is kFALSE.

Returns the split level of the input tree.

Deactivates a branch so it is not read.
This method is deprecated, use disableCategory() instead.

Returns the input tree.

Inline Functions

                 void setEventList(TEventList* el)
               Bool_t rewind()
               Bool_t reinit()
               Bool_t finalize()
                Int_t getCurrentRunId()
                Int_t getCurrentRefId()
                Int_t getGlobalRefId()
                 void setRefId(Int_t runId, Int_t refId)
                 void setGlobalRefId(Int_t refId)
        const Text_t* getCurrentFileName() const
                 void Print()
                 void replaceHeaderVersion(Int_t vers, Bool_t replace = kTRUE)
              TClass* Class()
              TClass* IsA() const
                 void ShowMembers(TMemberInspector& insp, char* parent)
                 void Streamer(TBuffer& b)
                 void StreamerNVirtual(TBuffer& b)
          HRootSource HRootSource(const HRootSource&)
         HRootSource& operator=(const HRootSource&)