// @(#)root/tree:$Id: TChain.h 26399 2008-11-24 01:44:18Z rdm $ // Author: Rene Brun 03/02/97 /************************************************************************* * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. * * All rights reserved. * * * * For the licensing terms see $ROOTSYS/LICENSE. * * For the list of contributors see $ROOTSYS/README/CREDITS. * *************************************************************************/ #ifndef ROOT_TChain #define ROOT_TChain ////////////////////////////////////////////////////////////////////////// // // // TChain // // // // A chain of TTrees. // // // ////////////////////////////////////////////////////////////////////////// #ifndef ROOT_TTree #include "TTree.h" #endif class TFile; class TBrowser; class TCut; class TEntryList; class TEventList; class TCollection; class TChain : public TTree { protected: Int_t fTreeOffsetLen; // Current size of fTreeOffset array Int_t fNtrees; // Number of trees Int_t fTreeNumber; //! Current Tree number in fTreeOffset table Long64_t *fTreeOffset; //[fTreeOffsetLen] Array of variables Bool_t fCanDeleteRefs; //! If true, TProcessIDs are deleted when closing a file TTree *fTree; //! Pointer to current tree (Note: We do *not* own this tree.) TFile *fFile; //! Pointer to current file (We own the file). TObjArray *fFiles; //-> List of file names containing the trees (TChainElement, owned) TList *fStatus; //-> List of active/inactive branches (TChainElement, owned) TChain *fProofChain; //! chain proxy when going to be processed by PROOF private: TChain(const TChain&); // not implemented TChain& operator=(const TChain&); // not implemented protected: void ReleaseChainProof(); public: // TChain constants enum { kGlobalWeight = BIT(15), kAutoDelete = BIT(16), kProofUptodate = BIT(17), kProofLite = BIT(18), kBigNumber = 1234567890 }; public: TChain(); TChain(const char* name, const char* title = ""); virtual ~TChain(); virtual Int_t Add(TChain* chain); virtual Int_t Add(const char* name, Long64_t nentries = kBigNumber); virtual Int_t AddFile(const char* name, Long64_t nentries = kBigNumber, const char* tname = ""); virtual Int_t AddFileInfoList(TCollection* list, Long64_t nfiles = kBigNumber); virtual TFriendElement *AddFriend(const char* chainname, const char* dummy = ""); virtual TFriendElement *AddFriend(const char* chainname, TFile* dummy); virtual TFriendElement *AddFriend(TTree* chain, const char* alias = "", Bool_t warn = kFALSE); virtual void Browse(TBrowser*); virtual void CanDeleteRefs(Bool_t flag = kTRUE); virtual void CreatePackets(); virtual void DirectoryAutoAdd(TDirectory *); virtual Long64_t Draw(const char* varexp, const TCut& selection, Option_t* option = "", Long64_t nentries = kBigNumber, Long64_t firstentry = 0); virtual Long64_t Draw(const char* varexp, const char* selection, Option_t* option = "", Long64_t nentries = kBigNumber, Long64_t firstentry = 0); // *MENU* virtual void Draw(Option_t* opt) { Draw(opt, "", "", 1000000000, 0); } virtual Int_t Fill() { MayNotUse("Fill()"); return -1; } virtual TBranch *FindBranch(const char* name); virtual TLeaf *FindLeaf(const char* name); virtual TBranch *GetBranch(const char* name); virtual Bool_t GetBranchStatus(const char* branchname) const; virtual Long64_t GetChainEntryNumber(Long64_t entry) const; Int_t GetNtrees() const { return fNtrees; } virtual Long64_t GetEntries() const; virtual Long64_t GetEntries(const char *sel) { return TTree::GetEntries(sel); } virtual Int_t GetEntry(Long64_t entry=0, Int_t getall=0); virtual Long64_t GetEntryNumber(Long64_t entry) const; virtual Int_t GetEntryWithIndex(Int_t major, Int_t minor=0); TFile *GetFile() const; virtual TLeaf *GetLeaf(const char* name); virtual TObjArray *GetListOfBranches(); // Warning, GetListOfFiles returns the list of TChainElements (not the list of files) // see TChain::AddFile to see how to get the corresponding TFile objects TObjArray *GetListOfFiles() const {return fFiles;} virtual TObjArray *GetListOfLeaves(); virtual const char *GetAlias(const char *aliasName) const; virtual Double_t GetMaximum(const char *columname); virtual Double_t GetMinimum(const char *columname); virtual Int_t GetNbranches(); virtual Long64_t GetReadEntry() const; TList *GetStatus() const { return fStatus; } virtual TTree *GetTree() const { return fTree; } virtual Int_t GetTreeNumber() const { return fTreeNumber; } Long64_t *GetTreeOffset() const { return fTreeOffset; } Int_t GetTreeOffsetLen() const { return fTreeOffsetLen; } virtual Double_t GetWeight() const; virtual Int_t LoadBaskets(Long64_t maxmemory); virtual Long64_t LoadTree(Long64_t entry); void Lookup(Bool_t force = kFALSE); virtual void Loop(Option_t *option="", Long64_t nentries=kBigNumber, Long64_t firstentry=0); // *MENU* virtual void ls(Option_t *option="") const; virtual Long64_t Merge(const char *name, Option_t *option = ""); virtual Long64_t Merge(TCollection *list, Option_t *option = ""); virtual Long64_t Merge(TFile *file, Int_t basketsize, Option_t *option=""); virtual void Print(Option_t *option="") const; virtual Long64_t Process(const char *filename, Option_t *option="", Long64_t nentries=kBigNumber, Long64_t firstentry=0); // *MENU* #ifndef __CINT__ virtual Long64_t Process(TSelector *selector, Option_t *option="", Long64_t nentries=kBigNumber, Long64_t firstentry=0); #endif virtual void Reset(Option_t *option=""); virtual void ResetBranchAddress(TBranch *); virtual void ResetBranchAddresses(); virtual Long64_t Scan(const char *varexp="", const char *selection="", Option_t *option="", Long64_t nentries=1000000000, Long64_t firstentry=0); // *MENU* virtual void SetAutoDelete(Bool_t autodel=kTRUE); virtual void SetBranchAddress(const char *bname,void *add, TBranch **ptr = 0); virtual void SetBranchAddress(const char *bname,void *add, TBranch **ptr, TClass *realClass, EDataType datatype, Bool_t isptr); virtual void SetBranchAddress(const char *bname,void *add, TClass *realClass, EDataType datatype, Bool_t isptr); virtual void SetBranchStatus(const char *bname, Bool_t status=1, UInt_t *found=0); virtual void SetDirectory(TDirectory *dir); virtual void SetEntryList(TEntryList *elist, Option_t *opt=""); virtual void SetEntryListFile(const char *filename="", Option_t *opt=""); virtual void SetEventList(TEventList *evlist); virtual void SetMakeClass(Int_t make) { TTree::SetMakeClass(make); if (fTree) fTree->SetMakeClass(make);} virtual void SetPacketSize(Int_t size = 100); virtual void SetProof(Bool_t on = kTRUE, Bool_t refresh = kFALSE, Bool_t gettreeheader = kFALSE); virtual void SetWeight(Double_t w=1, Option_t *option=""); virtual void UseCache(Int_t maxCacheSize = 10, Int_t pageSize = 0); ClassDef(TChain,5) //A chain of TTrees }; #endif // ROOT_TChain