A simple, robust and fast interface to read values from ROOT columnar datasets such as TTree, TChain or TNtuple.
TTreeReader is associated to TTreeReaderValue and TTreeReaderArray which are handles to concretely access the information in the dataset.
Example code can be found in
You can generate a skeleton of TTreeReaderValue<T>
and TTreeReaderArray<T>
declarations for all of a tree's branches using TTree::MakeSelector()
.
Roottest contains an example showing the full power.
A simpler analysis example can be found below: it histograms a function of the px and py branches.
A more complete example including error handling and a few combinations of TTreeReaderValue and TTreeReaderArray would look like this:
Definition at line 44 of file TTreeReader.h.
Classes | |
class | Iterator_t |
Iterate through the entries of a TTree. More... | |
Public Types | |
enum | EEntryStatus { kEntryValid = 0 , kEntryNotLoaded , kEntryNoTree , kEntryNotFound , kEntryChainSetupError , kEntryChainFileError , kEntryDictionaryError , kEntryBeyondEnd , kEntryBadReader , kEntryUnknownError } |
enum | ELoadTreeStatus { kNoTree = 0 , kLoadTreeNone , kInternalLoadTree , kExternalLoadTree } |
typedef Iterator_t | iterator |
Public Types inherited from TObject | |
enum | { kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff } |
enum | { kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) } |
enum | EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) } |
enum | EStatusBits { kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) , kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) } |
Public Member Functions | |
TTreeReader () | |
Default constructor. Call SetTree to connect to a TTree. | |
TTreeReader (const char *keyname, TDirectory *dir, TEntryList *entryList=nullptr) | |
Access data from the tree called keyname in the directory (e.g. | |
TTreeReader (const char *keyname, TEntryList *entryList=nullptr) | |
TTreeReader (TTree *tree, TEntryList *entryList=nullptr) | |
Access data from tree. | |
~TTreeReader () | |
Tell all value readers that the tree reader does not exist anymore. | |
Iterator_t | begin () |
Return an iterator to the 0th TTree entry. | |
Iterator_t | end () const |
Return an iterator beyond the last TTree entry. | |
Long64_t | GetCurrentEntry () const |
Returns the index of the current entry being read. | |
Long64_t | GetEntries () const |
Returns the number of entries of the TEntryList if one is provided, else of the TTree / TChain, independent of a range set by SetEntriesRange() by calling TTree/TChain::GetEntriesFast. | |
Long64_t | GetEntries (Bool_t force) |
Returns the number of entries of the TEntryList if one is provided, else of the TTree / TChain, independent of a range set by SetEntriesRange(). | |
TEntryList * | GetEntryList () const |
EEntryStatus | GetEntryStatus () const |
TTree * | GetTree () const |
virtual TClass * | IsA () const |
Bool_t | IsChain () const |
Bool_t | IsInvalid () const |
Bool_t | Notify () |
Callback from TChain and TTree's LoadTree. | |
void | SetTree (const char *keyname, TDirectory *dir, TEntryList *entryList=nullptr) |
Set (or update) the which tree to read from, passing the name of a tree in a directory. | |
void | SetTree (const char *keyname, TEntryList *entryList=nullptr) |
void | SetTree (TTree *tree, TEntryList *entryList=nullptr) |
Set (or update) the which tree to read from. | |
virtual void | Streamer (TBuffer &) |
Stream an object of class TObject. | |
void | StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b) |
Entry setters | |
Bool_t | Next () |
Move to the next entry (or index of the TEntryList if that is set). | |
EEntryStatus | SetEntry (Long64_t entry) |
Set the next entry (or index of the TEntryList if that is set). | |
EEntryStatus | SetLocalEntry (Long64_t entry) |
Set the next local tree entry. | |
EEntryStatus | SetEntriesRange (Long64_t beginEntry, Long64_t endEntry) |
Set the range of entries to be loaded by Next() ; end will not be loaded. | |
std::pair< Long64_t, Long64_t > | GetEntriesRange () const |
Get the begin and end entry numbers. | |
void | Restart () |
Restart a Next() loop from entry 0 (of TEntryList index 0 of fEntryList is set). | |
Public Member Functions inherited from TObject | |
TObject () | |
TObject constructor. | |
TObject (const TObject &object) | |
TObject copy ctor. | |
virtual | ~TObject () |
TObject destructor. | |
void | AbstractMethod (const char *method) const |
Use this method to implement an "abstract" method that you don't want to leave purely abstract. | |
virtual void | AppendPad (Option_t *option="") |
Append graphics object to current pad. | |
virtual void | Browse (TBrowser *b) |
Browse object. May be overridden for another default action. | |
ULong_t | CheckedHash () |
Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object. | |
virtual const char * | ClassName () const |
Returns name of class to which the object belongs. | |
virtual void | Clear (Option_t *="") |
virtual TObject * | Clone (const char *newname="") const |
Make a clone of an object using the Streamer facility. | |
virtual Int_t | Compare (const TObject *obj) const |
Compare abstract method. | |
virtual void | Copy (TObject &object) const |
Copy this to obj. | |
virtual void | Delete (Option_t *option="") |
Delete this object. | |
virtual Int_t | DistancetoPrimitive (Int_t px, Int_t py) |
Computes distance from point (px,py) to the object. | |
virtual void | Draw (Option_t *option="") |
Default Draw method for all objects. | |
virtual void | DrawClass () const |
Draw class inheritance tree of the class to which this object belongs. | |
virtual TObject * | DrawClone (Option_t *option="") const |
Draw a clone of this object in the current selected pad with: gROOT->SetSelectedPad(c1) . | |
virtual void | Dump () const |
Dump contents of object on stdout. | |
virtual void | Error (const char *method, const char *msgfmt,...) const |
Issue error message. | |
virtual void | Execute (const char *method, const char *params, Int_t *error=nullptr) |
Execute method on this object with the given parameter string, e.g. | |
virtual void | Execute (TMethod *method, TObjArray *params, Int_t *error=nullptr) |
Execute method on this object with parameters stored in the TObjArray. | |
virtual void | ExecuteEvent (Int_t event, Int_t px, Int_t py) |
Execute action corresponding to an event at (px,py). | |
virtual void | Fatal (const char *method, const char *msgfmt,...) const |
Issue fatal error message. | |
virtual TObject * | FindObject (const char *name) const |
Must be redefined in derived classes. | |
virtual TObject * | FindObject (const TObject *obj) const |
Must be redefined in derived classes. | |
virtual Option_t * | GetDrawOption () const |
Get option used by the graphics system to draw this object. | |
virtual const char * | GetIconName () const |
Returns mime type name of object. | |
virtual const char * | GetName () const |
Returns name of object. | |
virtual char * | GetObjectInfo (Int_t px, Int_t py) const |
Returns string containing info about the object at position (px,py). | |
virtual Option_t * | GetOption () const |
virtual const char * | GetTitle () const |
Returns title of object. | |
virtual UInt_t | GetUniqueID () const |
Return the unique object id. | |
virtual Bool_t | HandleTimer (TTimer *timer) |
Execute action in response of a timer timing out. | |
virtual ULong_t | Hash () const |
Return hash value for this object. | |
Bool_t | HasInconsistentHash () const |
Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e. | |
virtual void | Info (const char *method, const char *msgfmt,...) const |
Issue info message. | |
virtual Bool_t | InheritsFrom (const char *classname) const |
Returns kTRUE if object inherits from class "classname". | |
virtual Bool_t | InheritsFrom (const TClass *cl) const |
Returns kTRUE if object inherits from TClass cl. | |
virtual void | Inspect () const |
Dump contents of this object in a graphics canvas. | |
void | InvertBit (UInt_t f) |
Bool_t | IsDestructed () const |
IsDestructed. | |
virtual Bool_t | IsEqual (const TObject *obj) const |
Default equal comparison (objects are equal if they have the same address in memory). | |
virtual Bool_t | IsFolder () const |
Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). | |
R__ALWAYS_INLINE Bool_t | IsOnHeap () const |
virtual Bool_t | IsSortable () const |
R__ALWAYS_INLINE Bool_t | IsZombie () const |
virtual void | ls (Option_t *option="") const |
The ls function lists the contents of a class on stdout. | |
void | MayNotUse (const char *method) const |
Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). | |
void | Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const |
Use this method to declare a method obsolete. | |
void | operator delete (void *ptr) |
Operator delete. | |
void | operator delete[] (void *ptr) |
Operator delete []. | |
void * | operator new (size_t sz) |
void * | operator new (size_t sz, void *vp) |
void * | operator new[] (size_t sz) |
void * | operator new[] (size_t sz, void *vp) |
TObject & | operator= (const TObject &rhs) |
TObject assignment operator. | |
virtual void | Paint (Option_t *option="") |
This method must be overridden if a class wants to paint itself. | |
virtual void | Pop () |
Pop on object drawn in a pad to the top of the display list. | |
virtual void | Print (Option_t *option="") const |
This method must be overridden when a class wants to print itself. | |
virtual Int_t | Read (const char *name) |
Read contents of object with specified name from the current directory. | |
virtual void | RecursiveRemove (TObject *obj) |
Recursively remove this object from a list. | |
void | ResetBit (UInt_t f) |
virtual void | SaveAs (const char *filename="", Option_t *option="") const |
Save this object in the file specified by filename. | |
virtual void | SavePrimitive (std::ostream &out, Option_t *option="") |
Save a primitive as a C++ statement(s) on output stream "out". | |
void | SetBit (UInt_t f) |
void | SetBit (UInt_t f, Bool_t set) |
Set or unset the user status bits as specified in f. | |
virtual void | SetDrawOption (Option_t *option="") |
Set drawing option for object. | |
virtual void | SetUniqueID (UInt_t uid) |
Set the unique object id. | |
void | StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b) |
virtual void | SysError (const char *method, const char *msgfmt,...) const |
Issue system error message. | |
R__ALWAYS_INLINE Bool_t | TestBit (UInt_t f) const |
Int_t | TestBits (UInt_t f) const |
virtual void | UseCurrentStyle () |
Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. | |
virtual void | Warning (const char *method, const char *msgfmt,...) const |
Issue warning message. | |
virtual Int_t | Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) |
Write this object to the current directory. | |
virtual Int_t | Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const |
Write this object to the current directory. | |
Static Public Member Functions | |
static TClass * | Class () |
static const char * | Class_Name () |
static constexpr Version_t | Class_Version () |
static const char * | DeclFileName () |
Static Public Member Functions inherited from TObject | |
static TClass * | Class () |
static const char * | Class_Name () |
static constexpr Version_t | Class_Version () |
static const char * | DeclFileName () |
static Longptr_t | GetDtorOnly () |
Return destructor only flag. | |
static Bool_t | GetObjectStat () |
Get status of object stat flag. | |
static void | SetDtorOnly (void *obj) |
Set destructor only flag. | |
static void | SetObjectStat (Bool_t stat) |
Turn on/off tracking of objects in the TObjectTable. | |
Static Public Attributes | |
static constexpr const char *const | fgEntryStatusText [kEntryUnknownError+1] |
Protected Types | |
using | NamedProxies_t = std::unordered_map< std::string, std::unique_ptr< ROOT::Internal::TNamedBranchProxy > > |
Protected Types inherited from TObject | |
enum | { kOnlyPrepStep = (1ULL << ( 3 )) } |
Protected Member Functions | |
void | AddProxy (ROOT::Internal::TNamedBranchProxy *p) |
void | DeregisterValueReader (ROOT::Internal::TTreeReaderValueBase *reader) |
Remove a value reader for this tree. | |
ROOT::Internal::TNamedBranchProxy * | FindProxy (const char *branchname) const |
void | Initialize () |
Initialization of the director. | |
Bool_t | RegisterValueReader (ROOT::Internal::TTreeReaderValueBase *reader) |
Add a value reader for this tree. | |
EEntryStatus | SetEntryBase (Long64_t entry, Bool_t local) |
Load an entry into the tree, return the status of the read. | |
Bool_t | SetProxies () |
Tell readers we now have a tree. | |
Protected Member Functions inherited from TObject | |
virtual void | DoError (int level, const char *location, const char *fmt, va_list va) const |
Interface to ErrorHandler (protected). | |
void | MakeZombie () |
Private Types | |
enum | EStatusBits { kBitIsChain = (1ULL << ( 14 )) , kBitHaveWarnedAboutEntryListAttachedToTTree = (1ULL << ( 15 )) , kBitSetEntryBaseCallingLoadTree = (1ULL << ( 16 )) } |
Private Member Functions | |
std::string | GetProxyKey (const char *branchname) |
Private Attributes | |
Long64_t | fBeginEntry = 0LL |
This allows us to propagate the range to the TTreeCache. | |
ROOT::Internal::TBranchProxyDirector * | fDirector = nullptr |
proxying director, owned | |
Long64_t | fEndEntry = -1LL |
The end of the entry loop. | |
Long64_t | fEntry = -1 |
Current (non-local) entry of fTree or of fEntryList if set. | |
TEntryList * | fEntryList = nullptr |
entry list to be used | |
EEntryStatus | fEntryStatus = kEntryNotLoaded |
status of most recent read request | |
std::deque< ROOT::Internal::TFriendProxy * > | fFriendProxies |
proxying for friend TTrees, owned | |
ELoadTreeStatus | fLoadTreeStatus = kNoTree |
Indicator on how LoadTree was called 'last' time. | |
TNotifyLink< TTreeReader > | fNotify |
NamedProxies_t | fProxies |
attached ROOT::TNamedBranchProxies; owned | |
Bool_t | fProxiesSet = kFALSE |
True if the proxies have been set, false otherwise. | |
Bool_t | fSetEntryBaseCallingLoadTree = kFALSE |
True if during the LoadTree execution triggered by SetEntryBase. | |
TTree * | fTree = nullptr |
tree that's read | |
std::deque< ROOT::Internal::TTreeReaderValueBase * > | fValues |
readers that use our director | |
Friends | |
class | ROOT::Internal::TTreeReaderArrayBase |
class | ROOT::Internal::TTreeReaderValueBase |
#include <TTreeReader.h>
typedef Iterator_t TTreeReader::iterator |
Definition at line 129 of file TTreeReader.h.
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protected |
Definition at line 247 of file TTreeReader.h.
Definition at line 131 of file TTreeReader.h.
Enumerator | |
---|---|
kNoTree | default state, no TTree is connected (formerly 'Zombie' state) |
kLoadTreeNone | Notify has not been called yet. |
kInternalLoadTree | Notify/LoadTree was last called from SetEntryBase. |
kExternalLoadTree | User code called LoadTree directly. |
Definition at line 144 of file TTreeReader.h.
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private |
Enumerator | |
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kBitIsChain | our tree is a chain |
kBitHaveWarnedAboutEntryListAttachedToTTree | the tree had a TEntryList and we have warned about that |
kBitSetEntryBaseCallingLoadTree | SetEntryBase is in the process of calling TChain/TTree::LoadTree. |
Definition at line 284 of file TTreeReader.h.
TTreeReader::TTreeReader | ( | ) |
Default constructor. Call SetTree to connect to a TTree.
Definition at line 190 of file TTreeReader.cxx.
TTreeReader::TTreeReader | ( | TTree * | tree, |
TEntryList * | entryList = nullptr |
||
) |
Access data from tree.
tree | The TTree or TChain to read from |
entryList | It can be a single TEntryList with global entry numbers (supported, as an extension, also in the case of a TChain) or, if the first parameter is a TChain, a TEntryList with sub-TEntryLists with local entry numbers. In the latter case, the TEntryList must be associated to the TChain, as per chain.SetEntryList(&entryList). |
Definition at line 202 of file TTreeReader.cxx.
TTreeReader::TTreeReader | ( | const char * | keyname, |
TDirectory * | dir, | ||
TEntryList * | entryList = nullptr |
||
) |
Access data from the tree called keyname in the directory (e.g.
TFile) dir, or the current directory if dir is NULL. If keyname cannot be found, or if it is not a TTree, IsInvalid() will return true.
keyname | The name of the TTree to read from file |
dir | The TDirectory to read keyname from |
entryList | It can be a single TEntryList with global entry numbers (supported, as an extension, also in the case of a TChain) or, if the first parameter is a TChain, a TEntryList with sub-TEntryLists with local entry numbers. In the latter case, the TEntryList must be associated to the TChain, as per chain.SetEntryList(&entryList). |
Definition at line 227 of file TTreeReader.cxx.
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inline |
Definition at line 167 of file TTreeReader.h.
TTreeReader::~TTreeReader | ( | ) |
Tell all value readers that the tree reader does not exist anymore.
Definition at line 245 of file TTreeReader.cxx.
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inlineprotected |
Definition at line 255 of file TTreeReader.h.
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inline |
Return an iterator to the 0th TTree entry.
Definition at line 240 of file TTreeReader.h.
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static |
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inlinestaticconstexpr |
Definition at line 313 of file TTreeReader.h.
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inlinestatic |
Definition at line 313 of file TTreeReader.h.
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protected |
Remove a value reader for this tree.
Definition at line 686 of file TTreeReader.cxx.
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inline |
Return an iterator beyond the last TTree entry.
Definition at line 244 of file TTreeReader.h.
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inlineprotected |
Definition at line 249 of file TTreeReader.h.
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inline |
Returns the index of the current entry being read.
If IsChain()
, the returned index corresponds to the global entry number (i.e. not the entry number local to the chain's current tree). If fEntryList
, the returned index corresponds to an index in the TEntryList; to translate to the TChain's / TTree's entry number pass it through reader.GetEntryList()->GetEntry(reader.GetCurrentEntry())
.
Definition at line 235 of file TTreeReader.h.
Long64_t TTreeReader::GetEntries | ( | ) | const |
Returns the number of entries of the TEntryList if one is provided, else of the TTree / TChain, independent of a range set by SetEntriesRange() by calling TTree/TChain::GetEntriesFast.
Definition at line 467 of file TTreeReader.cxx.
Returns the number of entries of the TEntryList if one is provided, else of the TTree / TChain, independent of a range set by SetEntriesRange().
force | If IsChain() and force , determines whether all TFiles of this TChain should be opened to determine the exact number of entries of the TChain. If !IsChain() , force is ignored. |
Definition at line 484 of file TTreeReader.cxx.
Get the begin and end entry numbers.
Definition at line 216 of file TTreeReader.h.
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inline |
Definition at line 182 of file TTreeReader.h.
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inline |
Definition at line 223 of file TTreeReader.h.
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inlineprivate |
Definition at line 277 of file TTreeReader.h.
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inline |
Definition at line 181 of file TTreeReader.h.
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protected |
Initialization of the director.
Definition at line 269 of file TTreeReader.cxx.
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inlinevirtual |
Reimplemented from TObject.
Definition at line 313 of file TTreeReader.h.
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inline |
Definition at line 177 of file TTreeReader.h.
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inline |
Definition at line 179 of file TTreeReader.h.
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inline |
Move to the next entry (or index of the TEntryList if that is set).
while (reader.Next()) { ... }
Definition at line 190 of file TTreeReader.h.
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virtual |
Callback from TChain and TTree's LoadTree.
Reimplemented from TObject.
Definition at line 306 of file TTreeReader.cxx.
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protected |
Add a value reader for this tree.
Definition at line 671 of file TTreeReader.cxx.
void TTreeReader::Restart | ( | ) |
Restart a Next() loop from entry 0 (of TEntryList index 0 of fEntryList is set).
Definition at line 449 of file TTreeReader.cxx.
TTreeReader::EEntryStatus TTreeReader::SetEntriesRange | ( | Long64_t | beginEntry, |
Long64_t | endEntry | ||
) |
Set the range of entries to be loaded by Next()
; end will not be loaded.
If end <= begin, end
is ignored (set to -1
, i.e. will run on all entries from begin
onwards).
Example:
Note that if a TEntryList is present, beginEntry and endEntry refer to the beginEntry-th/endEntry-th entries of the TEntryList (or the main TEntryList in case it has sub-entrylists). In other words, SetEntriesRange can be used to only loop over part of the TEntryList, but not to further restrict the actual TTree/TChain entry numbers considered.
beginEntry | The first entry to be loaded by Next() . |
endEntry | The entry where Next() will return kFALSE, not loading it. |
Definition at line 411 of file TTreeReader.cxx.
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inline |
Set the next entry (or index of the TEntryList if that is set).
entry | If not TEntryList is set, the entry is a global entry (i.e. not the entry number local to the chain's current tree). |
entry
's read status, i.e. whether the entry is available. Definition at line 199 of file TTreeReader.h.
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protected |
Load an entry into the tree, return the status of the read.
For chains, entry is the global (i.e. not tree-local) entry number, unless local
is true
, in which case entry
specifies the entry number within the current tree. This is needed for instance for TSelector::Process().
Definition at line 508 of file TTreeReader.cxx.
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inline |
Set the next local tree entry.
If a TEntryList is set, this function is equivalent to SetEntry()
.
entry | Entry number of the TChain's current TTree. This is the entry number passed for instance by TSelector::Process(entry) , i.e. within TSelector::Process() always use SetLocalEntry() and not SetEntry() ! |
entry
's read status, i.e. whether the entry is available. Definition at line 209 of file TTreeReader.h.
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protected |
Tell readers we now have a tree.
fValues gets insertions during this loop (when parametrized arrays are read), invalidating iterators. Use old-school counting instead.
Definition at line 352 of file TTreeReader.cxx.
void TTreeReader::SetTree | ( | const char * | keyname, |
TDirectory * | dir, | ||
TEntryList * | entryList = nullptr |
||
) |
Set (or update) the which tree to read from, passing the name of a tree in a directory.
keyname | - name of the tree in dir |
dir | - the TDirectory to load keyname from (or gDirectory if nullptr ) |
entryList | - the TEntryList to attach to the TTreeReader . |
Definition at line 659 of file TTreeReader.cxx.
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inline |
Definition at line 172 of file TTreeReader.h.
void TTreeReader::SetTree | ( | TTree * | tree, |
TEntryList * | entryList = nullptr |
||
) |
Set (or update) the which tree to read from.
tree
can be a TTree or a TChain.
Definition at line 629 of file TTreeReader.cxx.
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virtual |
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inline |
Definition at line 313 of file TTreeReader.h.
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friend |
Definition at line 311 of file TTreeReader.h.
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friend |
Definition at line 310 of file TTreeReader.h.
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private |
This allows us to propagate the range to the TTreeCache.
Definition at line 306 of file TTreeReader.h.
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private |
proxying director, owned
Definition at line 295 of file TTreeReader.h.
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private |
The end of the entry loop.
When set (i.e. >= 0), it provides a way to stop looping over the TTree when we reach a certain entry: Next() returns kFALSE when GetCurrentEntry() reaches fEndEntry.
Definition at line 305 of file TTreeReader.h.
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private |
Current (non-local) entry of fTree or of fEntryList if set.
Definition at line 300 of file TTreeReader.h.
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private |
entry list to be used
Definition at line 291 of file TTreeReader.h.
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private |
status of most recent read request
Definition at line 292 of file TTreeReader.h.
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private |
proxying for friend TTrees, owned
Definition at line 296 of file TTreeReader.h.
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staticconstexpr |
Definition at line 151 of file TTreeReader.h.
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private |
Indicator on how LoadTree was called 'last' time.
Definition at line 293 of file TTreeReader.h.
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private |
Definition at line 294 of file TTreeReader.h.
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private |
attached ROOT::TNamedBranchProxies; owned
Definition at line 298 of file TTreeReader.h.
True if the proxies have been set, false otherwise.
Definition at line 307 of file TTreeReader.h.
True if during the LoadTree execution triggered by SetEntryBase.
Definition at line 308 of file TTreeReader.h.
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private |
tree that's read
Definition at line 290 of file TTreeReader.h.
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private |
readers that use our director
Definition at line 297 of file TTreeReader.h.