TTreeReaderArray< T > Class Template Reference

template<typename T>
class TTreeReaderArray< T >

Extracts array data from a TTree.

Definition at line 63 of file TTreeReaderArray.h.

Classes
class	Iterator_t
	Random access iterator to the elements of a TTreeReaderArray. More...

Public Types
using	const_iterator = Iterator_t< const TTreeReaderArray< T > >
using	iterator = Iterator_t< TTreeReaderArray< T > >
Public Types inherited from ROOT::Internal::TTreeReaderValueBase
enum	EReadStatus { kReadSuccess = 0, kReadNothingYet, kReadError }
enum	ESetupStatus {   kSetupNotSetup = -7, kSetupTreeDestructed = -8, kSetupMakeClassModeMismatch = -7, kSetupMissingCounterBranch = -6,   kSetupMissingBranch = -5, kSetupInternalError = -4, kSetupMissingDictionary = -3, kSetupMismatch = -2,   kSetupNotACollection = -1, kSetupMatch = 0, kSetupMatchBranch = 0, kSetupNoCheck = 5,   kSetupMatchLeaf = 6 }

Public Member Functions
	TTreeReaderArray (TTreeReader &tr, const char *branchname)
	Create an array reader of branch "branchname" for TTreeReader "tr". More...
T &	At (std::size_t idx)
const T &	At (std::size_t idx) const
iterator	begin ()
const_iterator	begin () const
const_iterator	cbegin () const
const_iterator	cend () const
iterator	end ()
const_iterator	end () const
T &	operator[] (std::size_t idx)
const T &	operator[] (std::size_t idx) const
Public Member Functions inherited from ROOT::Internal::TTreeReaderArrayBase
	TTreeReaderArrayBase (TTreeReader *reader, const char *branchname, TDictionary *dict)
virtual EReadStatus	GetReadStatus () const
std::size_t	GetSize () const
Bool_t	IsEmpty () const
Public Member Functions inherited from ROOT::Internal::TTreeReaderValueBase
virtual	~TTreeReaderValueBase ()
	Unregister from tree reader, cleanup. More...
void *	GetAddress ()
	Returns the memory address of the object being read. More...
const char *	GetBranchName () const
TLeaf *	GetLeaf ()
	If we are reading a leaf, return the corresponding TLeaf. More...
ESetupStatus	GetSetupStatus () const
Bool_t	IsValid () const
EReadStatus	ProxyRead ()
	Try to read the value from the TBranchProxy, returns the status of the read. More...

Protected Member Functions
virtual const char *	GetDerivedTypeName () const
Protected Member Functions inherited from ROOT::Internal::TTreeReaderArrayBase
virtual void	CreateProxy ()
	Create the proxy object for our branch. More...
bool	GetBranchAndLeaf (TBranch *&branch, TLeaf *&myLeaf, TDictionary *&branchActualType)
	Determine the branch / leaf and its type; reset fProxy / fSetupStatus on error. More...
const char *	GetBranchContentDataType (TBranch *branch, TString &contentTypeName, TDictionary *&dict)
	Access a branch's collection content (not the collection itself) through a proxy. More...
void	SetImpl (TBranch *branch, TLeaf *myLeaf)
	Create the TVirtualCollectionReader object for our branch. More...
void *	UntypedAt (std::size_t idx) const
Protected Member Functions inherited from ROOT::Internal::TTreeReaderValueBase
	TTreeReaderValueBase (TTreeReader *reader, const char *branchname, TDictionary *dict)
	Construct a tree value reader and register it with the reader object. More...
	TTreeReaderValueBase (const TTreeReaderValueBase &)
	Copy-construct. More...
const char *	GetBranchDataType (TBranch *branch, TDictionary *&dict) const
	Retrieve the type of data stored by branch; put its dictionary into dict, return its type name. More...
Detail::TBranchProxy *	GetProxy () const
void	MarkTreeReaderUnavailable ()
void	NotifyNewTree (TTree *newTree)
	The TTreeReader has switched to a new TTree. Update the leaf. More...
TTreeReaderValueBase &	operator= (const TTreeReaderValueBase &)
	Copy-assign. More...
void	RegisterWithTreeReader ()
	Register with tree reader. More...

Additional Inherited Members
Static Protected Member Functions inherited from ROOT::Internal::TTreeReaderValueBase
static std::string	GetElementTypeName (const std::type_info &ti)
	Stringify the template argument. More...
Protected Attributes inherited from ROOT::Internal::TTreeReaderArrayBase
TVirtualCollectionReader *	fImpl
Protected Attributes inherited from ROOT::Internal::TTreeReaderValueBase
TString	fBranchName
TDictionary *	fDict
int	fHaveLeaf: 1
int	fHaveStaticClassOffsets: 1
TLeaf *	fLeaf = nullptr
TString	fLeafName
Detail::TBranchProxy *	fProxy = nullptr
EReadStatus	fReadStatus: 2
ESetupStatus	fSetupStatus = kSetupNotSetup
std::vector< Long64_t >	fStaticClassOffsets
TTreeReader *	fTreeReader

#include <TTreeReaderArray.h>

Inheritance diagram for TTreeReaderArray< T >:

Member Typedef Documentation

const_iterator

template<typename T>

using TTreeReaderArray< T >::const_iterator = Iterator_t<const TTreeReaderArray<T> >

Definition at line 185 of file TTreeReaderArray.h.

iterator

template<typename T>

using TTreeReaderArray< T >::iterator = Iterator_t<TTreeReaderArray<T> >

Definition at line 184 of file TTreeReaderArray.h.

Constructor & Destructor Documentation

TTreeReaderArray()

template<typename T>

TTreeReaderArray< T >::TTreeReaderArray ( TTreeReader &  tr, const char *  branchname  )

inline

Create an array reader of branch "branchname" for TTreeReader "tr".

Definition at line 188 of file TTreeReaderArray.h.

Member Function Documentation

At() [1/2]

template<typename T>

T& TTreeReaderArray< T >::At ( std::size_t  idx )

inline

Definition at line 191 of file TTreeReaderArray.h.

At() [2/2]

template<typename T>

const T& TTreeReaderArray< T >::At ( std::size_t  idx ) const

inline

Definition at line 192 of file TTreeReaderArray.h.

begin() [1/2]

template<typename T>

iterator TTreeReaderArray< T >::begin ( )

inline

Definition at line 196 of file TTreeReaderArray.h.

begin() [2/2]

template<typename T>

const_iterator TTreeReaderArray< T >::begin ( ) const

inline

Definition at line 198 of file TTreeReaderArray.h.

cbegin()

template<typename T>

const_iterator TTreeReaderArray< T >::cbegin ( ) const

inline

Definition at line 200 of file TTreeReaderArray.h.

cend()

template<typename T>

const_iterator TTreeReaderArray< T >::cend ( ) const

inline

Definition at line 201 of file TTreeReaderArray.h.

end() [1/2]

template<typename T>

iterator TTreeReaderArray< T >::end ( )

inline

Definition at line 197 of file TTreeReaderArray.h.

end() [2/2]

template<typename T>

const_iterator TTreeReaderArray< T >::end ( ) const

inline

Definition at line 199 of file TTreeReaderArray.h.

GetDerivedTypeName()

template<typename T>

virtual const char* TTreeReaderArray< T >::GetDerivedTypeName ( ) const

inlineprotectedvirtual

Implements ROOT::Internal::TTreeReaderValueBase.

Definition at line 205 of file TTreeReaderArray.h.

operator[]() [1/2]

template<typename T>

T& TTreeReaderArray< T >::operator[] ( std::size_t  idx )

inline

Definition at line 193 of file TTreeReaderArray.h.

operator[]() [2/2]

template<typename T>

const T& TTreeReaderArray< T >::operator[] ( std::size_t  idx ) const

inline

Definition at line 194 of file TTreeReaderArray.h.

Libraries for TTreeReaderArray< T >:

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