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ROOT::Experimental::TTreeReaderFast Class Reference

Definition at line 38 of file TTreeReaderFast.hxx.


class  Iterator_t

Public Types

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

 TTreeReaderFast ()
 TTreeReaderFast (const char *keyname, TDirectory *dir=nullptr)
 TTreeReaderFast (TTree *tree)
 ~TTreeReaderFast () override
 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
TTreeReader::EEntryStatus GetEntryStatus () const
TTreeGetTree () const
TClassIsA () const override
TTreeReader::EEntryStatus SetEntriesRange (Long64_t first, Long64_t last)
TTreeReader::EEntryStatus SetEntry (Long64_t)
 Set an entry to be read.
void Streamer (TBuffer &) override
 Stream an object of class TObject.
void StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
- 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 TObjectClone (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 TObjectDrawClone (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 TObjectFindObject (const char *name) const
 Must be redefined in derived classes.
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes.
virtual Option_tGetDrawOption () 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_tGetOption () 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
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).
virtual Bool_t Notify ()
 This method must be overridden to handle object notification (the base implementation is no-op).
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, void *vp)
 Only called by placement new when throwing an exception.
void operator delete[] (void *ptr)
 Operator delete [].
void operator delete[] (void *ptr, void *vp)
 Only called by placement new[] when throwing an exception.
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)
TObjectoperator= (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 TClassClass ()
static const char * Class_Name ()
static constexpr Version_t Class_Version ()
static const char * DeclFileName ()
- Static Public Member Functions inherited from TObject
static TClassClass ()
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.

Protected Member Functions

void DeregisterValueReader (ROOT::Experimental::Internal::TTreeReaderValueFastBase *reader)
 Remove a value reader for this tree.
Int_tGetIndexRef ()
void RegisterValueReader (ROOT::Experimental::Internal::TTreeReaderValueFastBase *reader)
 Add a value reader for this 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 Member Functions

Int_t GetNextRange (Int_t)
 Advance to the next range in the file; returns the number of events in the range.
void Initialize ()
 Initialization of the director.

Private Attributes

Long64_t fBaseEvent {-1}
ROOT::Internal::TBranchProxyDirectorfDirector {nullptr}
 proxying director, owned
TDirectoryfDirectory {nullptr}
 directory (or current file for chains)
TTreeReader::EEntryStatus fEntryStatus {TTreeReader::kEntryNotLoaded}
 status of most recent read request
Int_t fEvtIndex {-1}
Long64_t fLastEntry {-1}
TTreefTree {nullptr}
 tree that's read
std::deque< ROOT::Experimental::Internal::TTreeReaderValueFastBase * > fValues
 readers that use our director


class ROOT::Experimental::Internal::TTreeReaderValueFastBase

Additional Inherited Members

- Protected Types inherited from TObject
enum  { kOnlyPrepStep = (1ULL << ( 3 )) }

#include <ROOT/TTreeReaderFast.hxx>

Inheritance diagram for ROOT::Experimental::TTreeReaderFast:

Member Typedef Documentation

◆ iterator

Constructor & Destructor Documentation

◆ TTreeReaderFast() [1/3]

ROOT::Experimental::TTreeReaderFast::TTreeReaderFast ( )

Definition at line 124 of file TTreeReaderFast.hxx.

◆ TTreeReaderFast() [2/3]

TTreeReaderFast::TTreeReaderFast ( TTree tree)

Definition at line 22 of file TTreeReaderFast.cxx.

◆ TTreeReaderFast() [3/3]

TTreeReaderFast::TTreeReaderFast ( const char *  keyname,
TDirectory dir = nullptr 

Definition at line 32 of file TTreeReaderFast.cxx.

◆ ~TTreeReaderFast()

TTreeReaderFast::~TTreeReaderFast ( )

Tell all value readers that the tree reader does not exist anymore.

Definition at line 43 of file TTreeReaderFast.cxx.

Member Function Documentation

◆ begin()

Iterator_t ROOT::Experimental::TTreeReaderFast::begin ( )

Return an iterator to the 0th TTree entry.

Definition at line 144 of file TTreeReaderFast.hxx.

◆ Class()

static TClass * ROOT::Experimental::TTreeReaderFast::Class ( )
TClass describing this class

◆ Class_Name()

static const char * ROOT::Experimental::TTreeReaderFast::Class_Name ( )
Name of this class

◆ Class_Version()

static constexpr Version_t ROOT::Experimental::TTreeReaderFast::Class_Version ( )
Version of this class

Definition at line 174 of file TTreeReaderFast.hxx.

◆ DeclFileName()

static const char * ROOT::Experimental::TTreeReaderFast::DeclFileName ( )
Name of the file containing the class declaration

Definition at line 174 of file TTreeReaderFast.hxx.

◆ DeregisterValueReader()

void TTreeReaderFast::DeregisterValueReader ( ROOT::Experimental::Internal::TTreeReaderValueFastBase reader)

Remove a value reader for this tree.

Definition at line 129 of file TTreeReaderFast.cxx.

◆ end()

Iterator_t ROOT::Experimental::TTreeReaderFast::end ( ) const

Definition at line 147 of file TTreeReaderFast.hxx.

◆ GetEntryStatus()

TTreeReader::EEntryStatus ROOT::Experimental::TTreeReaderFast::GetEntryStatus ( ) const

Definition at line 137 of file TTreeReaderFast.hxx.

◆ GetIndexRef()

Int_t & ROOT::Experimental::TTreeReaderFast::GetIndexRef ( )

Definition at line 152 of file TTreeReaderFast.hxx.

◆ GetNextRange()

Int_t TTreeReaderFast::GetNextRange ( Int_t  eventNum)

Advance to the next range in the file; returns the number of events in the range.

Returned number is the number of events we can process before one of the Value objects will hit the end of its buffer.

Definition at line 146 of file TTreeReaderFast.cxx.

◆ GetTree()

TTree * ROOT::Experimental::TTreeReaderFast::GetTree ( ) const

Definition at line 139 of file TTreeReaderFast.hxx.

◆ Initialize()

void TTreeReaderFast::Initialize ( )

Initialization of the director.

Definition at line 53 of file TTreeReaderFast.cxx.

◆ IsA()

TClass * ROOT::Experimental::TTreeReaderFast::IsA ( ) const
TClass describing current object

Reimplemented from TObject.

Definition at line 174 of file TTreeReaderFast.hxx.

◆ RegisterValueReader()

void TTreeReaderFast::RegisterValueReader ( ROOT::Experimental::Internal::TTreeReaderValueFastBase reader)

Add a value reader for this tree.

Definition at line 121 of file TTreeReaderFast.cxx.

◆ SetEntriesRange()

TTreeReader::EEntryStatus ROOT::Experimental::TTreeReaderFast::SetEntriesRange ( Long64_t  first,
Long64_t  last 

◆ SetEntry()

TTreeReader::EEntryStatus TTreeReaderFast::SetEntry ( Long64_t  entry)

Set an entry to be read.

Definition at line 81 of file TTreeReaderFast.cxx.

◆ Streamer()

void ROOT::Experimental::TTreeReaderFast::Streamer ( TBuffer R__b)

Stream an object of class TObject.

Reimplemented from TObject.

◆ StreamerNVirtual()

void ROOT::Experimental::TTreeReaderFast::StreamerNVirtual ( TBuffer ClassDef_StreamerNVirtual_b)

Definition at line 174 of file TTreeReaderFast.hxx.

Friends And Related Symbol Documentation

◆ ROOT::Experimental::Internal::TTreeReaderValueFastBase

Definition at line 172 of file TTreeReaderFast.hxx.

Member Data Documentation

◆ fBaseEvent

Long64_t ROOT::Experimental::TTreeReaderFast::fBaseEvent {-1}

Definition at line 169 of file TTreeReaderFast.hxx.

◆ fDirector

ROOT::Internal::TBranchProxyDirector* ROOT::Experimental::TTreeReaderFast::fDirector {nullptr}

proxying director, owned

Definition at line 164 of file TTreeReaderFast.hxx.

◆ fDirectory

TDirectory* ROOT::Experimental::TTreeReaderFast::fDirectory {nullptr}

directory (or current file for chains)

Definition at line 163 of file TTreeReaderFast.hxx.

◆ fEntryStatus

TTreeReader::EEntryStatus ROOT::Experimental::TTreeReaderFast::fEntryStatus {TTreeReader::kEntryNotLoaded}

status of most recent read request

Definition at line 165 of file TTreeReaderFast.hxx.

◆ fEvtIndex

Int_t ROOT::Experimental::TTreeReaderFast::fEvtIndex {-1}

Definition at line 168 of file TTreeReaderFast.hxx.

◆ fLastEntry

Long64_t ROOT::Experimental::TTreeReaderFast::fLastEntry {-1}

Definition at line 170 of file TTreeReaderFast.hxx.

◆ fTree

TTree* ROOT::Experimental::TTreeReaderFast::fTree {nullptr}

tree that's read

Definition at line 162 of file TTreeReaderFast.hxx.

◆ fValues

std::deque<ROOT::Experimental::Internal::TTreeReaderValueFastBase*> ROOT::Experimental::TTreeReaderFast::fValues

readers that use our director

Definition at line 166 of file TTreeReaderFast.hxx.

Libraries for ROOT::Experimental::TTreeReaderFast:

The documentation for this class was generated from the following files: