class TEntryListFromFile: public TEntryList
TEntryListFromFile Manages entry lists from different files, when they are not loaded in memory at the same time. This entry list should only be used when processing a TChain (see TChain::SetEntryList() function). File naming convention: - by default, filename_elist.root is used, where filename is the name of the chain element. - xxx$xxx.root - $ sign is replaced by the name of the chain element If the list name is not specified (by passing filename_elist.root/listname to the TChain::SetEntryList() function, the first object of class TEntryList in the file is taken. It is assumed that there are as many lists, as there are chain elements, and they are in the same order. If one of the list files can't be opened, or there is an error reading a list from the file, this list is skipped and the entry loop continues on the next list.
Function Members (Methods)
public:
| TEntryListFromFile() | |
| TEntryListFromFile(const TEntryListFromFile&) | |
| TEntryListFromFile(const char* filename, const char* listname, Int_t nfiles) | |
| virtual | ~TEntryListFromFile() |
| void | TObject::AbstractMethod(const char* method) const |
| virtual void | Add(const TEntryList*) |
| virtual void | TObject::AppendPad(Option_t* option = "") |
| virtual void | TObject::Browse(TBrowser* b) |
| static TClass* | Class() |
| virtual const char* | TObject::ClassName() const |
| virtual void | TNamed::Clear(Option_t* option = "") |
| virtual TObject* | TNamed::Clone(const char* newname = "") const |
| virtual Int_t | TNamed::Compare(const TObject* obj) const |
| virtual Int_t | Contains(Long64_t, TTree*) |
| virtual void | TNamed::Copy(TObject& named) const |
| virtual void | TObject::Delete(Option_t* option = "")MENU |
| virtual void | TEntryList::DirectoryAutoAdd(TDirectory*) |
| virtual Int_t | TObject::DistancetoPrimitive(Int_t px, Int_t py) |
| virtual void | TObject::Draw(Option_t* option = "") |
| virtual void | TObject::DrawClass() constMENU |
| virtual TObject* | TObject::DrawClone(Option_t* option = "") constMENU |
| virtual void | TObject::Dump() constMENU |
| virtual Bool_t | Enter(Long64_t, TTree*) |
| virtual void | TObject::Error(const char* method, const char* msgfmt) const |
| virtual void | TObject::Execute(const char* method, const char* params, Int_t* error = 0) |
| virtual void | TObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0) |
| virtual void | TObject::ExecuteEvent(Int_t event, Int_t px, Int_t py) |
| virtual void | TObject::Fatal(const char* method, const char* msgfmt) const |
| virtual void | TNamed::FillBuffer(char*& buffer) |
| virtual TObject* | TObject::FindObject(const char* name) const |
| virtual TObject* | TObject::FindObject(const TObject* obj) const |
| virtual TEntryList* | GetCurrentList() const |
| virtual TDirectory* | TEntryList::GetDirectory() const |
| virtual Option_t* | TObject::GetDrawOption() const |
| static Long_t | TObject::GetDtorOnly() |
| virtual Long64_t | GetEntries() |
| virtual Long64_t | GetEntriesFast() const |
| virtual Long64_t | TEntryList::GetEntriesToProcess() const |
| virtual Long64_t | GetEntry(Int_t index) |
| virtual Long64_t | GetEntryAndTree(Int_t index, Int_t& treenum) |
| virtual TEntryList* | GetEntryList(const char*, const char*, Option_t*) |
| virtual const char* | GetFileName() const |
| virtual const char* | TObject::GetIconName() const |
| virtual TList* | TEntryList::GetLists() const |
| virtual Long64_t | GetN() const |
| virtual const char* | TNamed::GetName() const |
| virtual char* | TObject::GetObjectInfo(Int_t px, Int_t py) const |
| static Bool_t | TObject::GetObjectStat() |
| virtual Option_t* | TObject::GetOption() const |
| virtual Bool_t | TEntryList::GetReapplyCut() const |
| virtual const char* | TNamed::GetTitle() const |
| virtual const char* | GetTreeName() const |
| virtual Int_t | GetTreeNumber() const |
| virtual UInt_t | TObject::GetUniqueID() const |
| virtual Bool_t | TObject::HandleTimer(TTimer* timer) |
| virtual ULong_t | TNamed::Hash() const |
| virtual void | TObject::Info(const char* method, const char* msgfmt) const |
| virtual Bool_t | TObject::InheritsFrom(const char* classname) const |
| virtual Bool_t | TObject::InheritsFrom(const TClass* cl) const |
| virtual void | TObject::Inspect() constMENU |
| void | TObject::InvertBit(UInt_t f) |
| virtual TClass* | IsA() const |
| virtual Bool_t | TObject::IsEqual(const TObject* obj) const |
| virtual Bool_t | TObject::IsFolder() const |
| Bool_t | TObject::IsOnHeap() const |
| virtual Bool_t | TNamed::IsSortable() const |
| Bool_t | TObject::IsZombie() const |
| virtual Int_t | LoadList(Int_t listnumber) |
| virtual void | TNamed::ls(Option_t* option = "") const |
| void | TObject::MayNotUse(const char* method) const |
| virtual Int_t | Merge(TCollection*) |
| virtual Long64_t | Next() |
| virtual Bool_t | TObject::Notify() |
| static void | TObject::operator delete(void* ptr) |
| static void | TObject::operator delete(void* ptr, void* vp) |
| static void | TObject::operator delete[](void* ptr) |
| static void | TObject::operator delete[](void* ptr, void* vp) |
| void* | TObject::operator new(size_t sz) |
| void* | TObject::operator new(size_t sz, void* vp) |
| void* | TObject::operator new[](size_t sz) |
| void* | TObject::operator new[](size_t sz, void* vp) |
| TNamed& | TNamed::operator=(const TNamed& rhs) |
| virtual void | OptimizeStorage() |
| virtual void | TObject::Paint(Option_t* option = "") |
| virtual void | TObject::Pop() |
| virtual void | Print(Option_t* option = "") const |
| virtual Int_t | TObject::Read(const char* name) |
| virtual void | TObject::RecursiveRemove(TObject* obj) |
| virtual Bool_t | Remove(Long64_t, TTree*) |
| virtual void | TEntryList::Reset() |
| void | TObject::ResetBit(UInt_t f) |
| virtual void | TObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU |
| virtual void | TObject::SavePrimitive(basic_ostream<char,char_traits<char> >& out, Option_t* option = "") |
| void | TObject::SetBit(UInt_t f) |
| void | TObject::SetBit(UInt_t f, Bool_t set) |
| virtual void | TEntryList::SetDirectory(TDirectory* dir) |
| virtual void | TObject::SetDrawOption(Option_t* option = "")MENU |
| static void | TObject::SetDtorOnly(void* obj) |
| virtual void | TEntryList::SetEntriesToProcess(Long64_t nen) |
| virtual void | TEntryList::SetFileName(const char* filename) |
| virtual void | SetFileNames(TObjArray* names) |
| virtual void | TNamed::SetName(const char* name)MENU |
| virtual void | TNamed::SetNameTitle(const char* name, const char* title) |
| virtual void | SetNFiles(Int_t nfiles) |
| static void | TObject::SetObjectStat(Bool_t stat) |
| virtual void | TEntryList::SetReapplyCut(Bool_t apply = kFALSE)TOGGLE |
| virtual void | TEntryList::SetShift(Bool_t shift) |
| virtual void | TNamed::SetTitle(const char* title = "")MENU |
| virtual void | SetTree(const TTree*) |
| virtual void | SetTree(const char*, const char*) |
| virtual void | TEntryList::SetTreeName(const char* treename) |
| virtual void | SetTreeNumber(Int_t index) |
| virtual void | TObject::SetUniqueID(UInt_t uid) |
| virtual void | ShowMembers(TMemberInspector& insp) |
| virtual Int_t | TNamed::Sizeof() const |
| virtual void | Streamer(TBuffer& b) |
| void | StreamerNVirtual(TBuffer& b) |
| virtual void | Subtract(const TEntryList*) |
| virtual void | TObject::SysError(const char* method, const char* msgfmt) const |
| Bool_t | TObject::TestBit(UInt_t f) const |
| Int_t | TObject::TestBits(UInt_t f) const |
| virtual void | TObject::UseCurrentStyle() |
| virtual void | TObject::Warning(const char* method, const char* msgfmt) const |
| virtual Int_t | TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) |
| virtual Int_t | TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const |
protected:
| virtual void | TObject::DoError(int level, const char* location, const char* fmt, va_list va) const |
| void | TObject::MakeZombie() |
Data Members
public:
| enum { | kBigNumber | |
| }; | ||
| enum TEntryList::[unnamed] { | kBlockSize | |
| }; | ||
| enum TObject::EStatusBits { | kCanDelete | |
| kMustCleanup | ||
| kObjInCanvas | ||
| kIsReferenced | ||
| kHasUUID | ||
| kCannotPick | ||
| kNoContextMenu | ||
| kInvalidObject | ||
| }; | ||
| enum TObject::[unnamed] { | kIsOnHeap | |
| kNotDeleted | ||
| kZombie | ||
| kBitMask | ||
| kSingleKey | ||
| kOverwrite | ||
| kWriteDelete | ||
| }; |
protected:
| TObjArray* | TEntryList::fBlocks | blocks with indices of passing events (TEntryListBlocks) |
| TEntryList* | TEntryList::fCurrent | ! currently filled entry list |
| TDirectory* | TEntryList::fDirectory | ! Pointer to directory holding this tree |
| Long64_t | TEntryList::fEntriesToProcess | used on proof to set the number of entries to process in a packet |
| TFile* | fFile | currently open file |
| TString | TEntryList::fFileName | name of the file, where the tree is |
| TObjArray* | fFileNames | ! points to the fFiles data member of the corresponding chain |
| Long64_t | TEntryList::fLastIndexQueried | ! used to optimize GetEntry() function from a loop |
| Long64_t | TEntryList::fLastIndexReturned | ! used to optimize GetEntry() function from a loop |
| TString | fListFileName | from this string names of all files can be found |
| TString | fListName | name of the list |
| Long64_t* | fListOffset | [fNFiles] numbers of entries in ind. lists |
| TList* | TEntryList::fLists | a list of underlying entry lists for each tree of a chain |
| Long64_t | TEntryList::fN | number of entries in the list |
| Int_t | TEntryList::fNBlocks | number of TEntryListBlocks |
| Int_t | fNFiles | total number of files |
| TString | TNamed::fName | object identifier |
| Bool_t | TEntryList::fReapply | If true, TTree::Draw will 'reapply' the original cut |
| Bool_t | TEntryList::fShift | ! true when some sub-lists don't correspond to trees |
| ULong_t | TEntryList::fStringHash | ! Hash value of a string of treename and filename |
| TString | TNamed::fTitle | object title |
| TString | TEntryList::fTreeName | name of the tree |
| Int_t | TEntryList::fTreeNumber | ! the index of the tree in the chain (used when the entry |
Class Charts
Function documentation
TEntryListFromFile(const char* filename, const char* listname, Int_t nfiles)
File naming convention: - by default, filename_elist.root is used, where filename is the name of the chain element - xxx$xxx.root - $ sign is replaced by the name of the chain element The TObjArray of chain elements is set by the TEntryListFromFile::SetFileNames() function. If the list name is not specified, the first object of class TEntryList in the file is taken. nfiles is the total number of files to process
Long64_t GetEntryAndTree(Int_t index, Int_t& treenum)
return the entry corresponding to the index parameter and the number of the tree, where this entry is
Long64_t GetEntries()
Returns the total number of entries in the list. If some lists have not been loaded, loads them.
Int_t LoadList(Int_t listnumber)
Loads the list #listnumber This is the only function that can modify fCurrent and fFile data members