ROOT::Internal::RDF::RTreeColumnReader< RVec< T > > Class Template Reference

template<typename T>
class ROOT::Internal::RDF::RTreeColumnReader< RVec< T > >

RTreeColumnReader specialization for TTree values read via TTreeReaderArrays.

TTreeReaderArrays are used whenever the RDF column type is RVec<T>.

Definition at line 56 of file RTreeColumnReader.hxx.

Public Member Functions
	RTreeColumnReader (TTreeReader &r, const std::string &colName)
	~RTreeColumnReader () override
	See the other class template specializations for an explanation.
Public Member Functions inherited from ROOT::Detail::RDF::RColumnReaderBase
virtual	~RColumnReaderBase ()=default
template<typename T >
T &	Get (Long64_t entry)
	Return the column value for the given entry.

Private Types
enum class	EStorageType : char { kContiguous , kUnknown , kSparse }
	Enumerator for the memory layout of the branch. More...

Private Member Functions
void *	GetImpl (Long64_t entry) final

Private Attributes
bool	fCopyWarningPrinted = false
	Whether we already printed a warning about performing a copy of the TTreeReaderArray contents.
Long64_t	fLastEntry = -1
RVec< T >	fRVec
	We return a reference to this RVec to clients, to guarantee a stable address and contiguous memory layout.
EStorageType	fStorageType = EStorageType::kUnknown
	Signal whether we ever checked that the branch we are reading with a TTreeReaderArray stores array elements in contiguous memory.
std::unique_ptr< TTreeReaderArray< T > >	fTreeArray

#include <ROOT/RDF/RTreeColumnReader.hxx>

Inheritance diagram for ROOT::Internal::RDF::RTreeColumnReader< RVec< T > >:

Member Enumeration Documentation

EStorageType

template<typename T >

enum class ROOT::Internal::RDF::RTreeColumnReader< RVec< T > >::EStorageType : char

strongprivate

Enumerator for the memory layout of the branch.

Enumerator
kContiguous
kUnknown
kSparse

Definition at line 60 of file RTreeColumnReader.hxx.

Constructor & Destructor Documentation

RTreeColumnReader()

template<typename T >

ROOT::Internal::RDF::RTreeColumnReader< RVec< T > >::RTreeColumnReader ( TTreeReader &  r, const std::string &  colName  )

inline

Definition at line 134 of file RTreeColumnReader.hxx.

~RTreeColumnReader()

template<typename T >

ROOT::Internal::RDF::RTreeColumnReader< RVec< T > >::~RTreeColumnReader ( )

inlineoverride

See the other class template specializations for an explanation.

Definition at line 140 of file RTreeColumnReader.hxx.

Member Function Documentation

GetImpl()

template<typename T >

void * ROOT::Internal::RDF::RTreeColumnReader< RVec< T > >::GetImpl ( Long64_t  entry )

inlinefinalprivatevirtual

Implements ROOT::Detail::RDF::RColumnReaderBase.

Definition at line 73 of file RTreeColumnReader.hxx.

Member Data Documentation

fCopyWarningPrinted

template<typename T >

bool ROOT::Internal::RDF::RTreeColumnReader< RVec< T > >::fCopyWarningPrinted = false

private

Whether we already printed a warning about performing a copy of the TTreeReaderArray contents.

Definition at line 71 of file RTreeColumnReader.hxx.

fLastEntry

template<typename T >

Long64_t ROOT::Internal::RDF::RTreeColumnReader< RVec< T > >::fLastEntry = -1

private

Definition at line 68 of file RTreeColumnReader.hxx.

fRVec

template<typename T >

RVec<T> ROOT::Internal::RDF::RTreeColumnReader< RVec< T > >::fRVec

private

We return a reference to this RVec to clients, to guarantee a stable address and contiguous memory layout.

Definition at line 63 of file RTreeColumnReader.hxx.

fStorageType

template<typename T >

EStorageType ROOT::Internal::RDF::RTreeColumnReader< RVec< T > >::fStorageType = EStorageType::kUnknown

private

Signal whether we ever checked that the branch we are reading with a TTreeReaderArray stores array elements in contiguous memory.

Definition at line 67 of file RTreeColumnReader.hxx.

fTreeArray

template<typename T >

std::unique_ptr<TTreeReaderArray<T> > ROOT::Internal::RDF::RTreeColumnReader< RVec< T > >::fTreeArray

private

Definition at line 57 of file RTreeColumnReader.hxx.