library: libTree #include "TDSet.h"

# TDSetElement

class description - source file - inheritance tree (.pdf)

## class TDSetElement : public TObject

| Inheritance Chart:

`TObject`

<-

`TDSetElement`

        public:

                          TDSetElement()
                          TDSetElement(const TDSet* set, const char* file, const char* objname = "0", const char* dir = "0", Long64_t first = 0, Long64_t num = -1, const char* msd = "0")
                          TDSetElement(const TDSetElement&)
                  virtual ~TDSetElement()
           static TClass* Class()
            virtual Int_t Compare(const TObject* obj) const
              const char* GetDirectory() const
              TEventList* GetEventList() const
              const char* GetFileName() const
                 Long64_t GetFirst() const
              const char* GetMsd() const
                 Long64_t GetNum() const
              const char* GetObjName() const
                 Long64_t GetTDSetOffset() const
                   Bool_t GetValid() const
          virtual TClass* IsA() const
           virtual Bool_t IsSortable() const
             virtual void Print(Option_t* options = "") const
                     void SetEventList(TEventList* aList)
                     void SetFirst(Long64_t first)
                     void SetNum(Long64_t num)
                     void SetTDSetOffset(Long64_t offset)
             virtual void ShowMembers(TMemberInspector& insp, char* parent)
             virtual void Streamer(TBuffer& b)
                     void StreamerNVirtual(TBuffer& b)
                     void Validate()
                     void Validate(TDSetElement* elem)

### Data Members

        private:

               TString fFileName     physical or logical file name
               TString fObjName      name of objects to be analyzed in this file
               TString fDirectory    directory in file where to look for objects
              Long64_t fFirst        first entry to process
              Long64_t fNum          number of entries to process
          const TDSet* fSet          set to which element belongs
               TString fMsd          mass storage domain name
              Long64_t fTDSetOffset  ! offset in the whole TDSet of the first
           TEventList* fEventList    event list to be used in processing
                Bool_t fValid        whether or not the input values are valid
              Long64_t fEntries      total number of possible entries in file

## Class Description

     TDSet

     This class implements a data set to be used for PROOF processing.
     The TDSet defines the class of which objects will be processed,
     the directory in the file where the objects of that type can be
     found and the list of files to be processed. The files can be
     specified as logical file names (LFN's) or as physical file names
     (PFN's). In case of LFN's the resolution to PFN's will be done
     according to the currently active GRID interface.
     Examples:
       TDSet treeset("TTree", "AOD");
       treeset.Add("lfn:/alien.cern.ch/alice/prod2002/file1");
       ...
       treeset.AddFriend(friendset);

     or

       TDSet objset("MyEvent", "*", "/events");
       objset.Add("root://cms.cern.ch/user/prod2002/hprod_1.root");
       ...
       objset.Add(set2003);

     Validity of file names will only be checked at processing time
     (typically on the PROOF master server), not at creation time.

TDSetElement(const TDSet *set, const char *file, const char *objname, const char *dir, Long64_t first, Long64_t num, const char *msd)

     Create a TDSet element.

~TDSetElement()

     Clean up the element.

const char* GetObjName() const

     Return object name.

const char* GetDirectory() const

     Return directory where to look for object.

void Print(Option_t *opt) const

     Print a TDSetElement. When option="a" print full data.

void Validate()

     Validate by opening the file.

void Validate(TDSetElement* elem)

     Validate by checking against another element.

Int_t Compare(const TObject *obj) const

    Compare elements by filename (and the fFirst).

### Inline Functions

            TDSetElement TDSetElement(const TDSet* set, const char* file, const char* objname = "0", const char* dir = "0", Long64_t first = 0, Long64_t num = -1, const char* msd = "0")
             const char* GetFileName() const
                Long64_t GetFirst() const
                    void SetFirst(Long64_t first)
                Long64_t GetNum() const
             const char* GetMsd() const
                    void SetNum(Long64_t num)
                  Bool_t GetValid() const
                Long64_t GetTDSetOffset() const
                    void SetTDSetOffset(Long64_t offset)
             TEventList* GetEventList() const
                    void SetEventList(TEventList* aList)
                  Bool_t IsSortable() const
                 TClass* Class()
                 TClass* IsA() const
                    void ShowMembers(TMemberInspector& insp, char* parent)
                    void Streamer(TBuffer& b)
                    void StreamerNVirtual(TBuffer& b)
            TDSetElement TDSetElement(const TDSetElement&)

Author: Fons Rademakers 11/01/02
Last update: root/tree:$Name: $:$Id: TDSet.cxx,v 1.20 2005/05/13 16:39:50 rdm Exp $
Copyright (C) 1995-2001, Rene Brun and Fons Rademakers. *