ROOT::Experimental::Internal::RNTupleColumnReader Class Reference

Every RDF column is represented by exactly one RNTuple field.

Definition at line 117 of file RNTupleDS.cxx.

Public Member Functions
	RNTupleColumnReader (std::unique_ptr< RFieldBase > f)
	~RNTupleColumnReader ()
std::unique_ptr< RNTupleColumnReader >	Clone ()
	Column readers are created as prototype and then cloned for every slot.
void	Connect (RPageSource &source)
	Connect the field and its subfields to the page source.
void *	GetImpl (Long64_t entry) final
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
using	RFieldBase = ROOT::Experimental::Detail::RFieldBase
using	RFieldValue = ROOT::Experimental::Detail::RFieldValue
using	RPageSource = ROOT::Experimental::Detail::RPageSource

Private Attributes
std::unique_ptr< RFieldBase >	fField
	The field backing the RDF column.
Long64_t	fLastEntry
	Last entry number that was read.
RFieldValue	fValue
	The memory location used to read from fField.

Inheritance diagram for ROOT::Experimental::Internal::RNTupleColumnReader:

Member Typedef Documentation

RFieldBase

using ROOT::Experimental::Internal::RNTupleColumnReader::RFieldBase = ROOT::Experimental::Detail::RFieldBase

private

Definition at line 118 of file RNTupleDS.cxx.

RFieldValue

using ROOT::Experimental::Internal::RNTupleColumnReader::RFieldValue = ROOT::Experimental::Detail::RFieldValue

private

Definition at line 119 of file RNTupleDS.cxx.

RPageSource

using ROOT::Experimental::Internal::RNTupleColumnReader::RPageSource = ROOT::Experimental::Detail::RPageSource

private

Definition at line 120 of file RNTupleDS.cxx.

Constructor & Destructor Documentation

RNTupleColumnReader()

ROOT::Experimental::Internal::RNTupleColumnReader::RNTupleColumnReader ( std::unique_ptr< RFieldBase >  f )

inline

Definition at line 127 of file RNTupleDS.cxx.

~RNTupleColumnReader()

ROOT::Experimental::Internal::RNTupleColumnReader::~RNTupleColumnReader ( )

inline

Definition at line 131 of file RNTupleDS.cxx.

Member Function Documentation

Clone()

std::unique_ptr< RNTupleColumnReader > ROOT::Experimental::Internal::RNTupleColumnReader::Clone ( )

inline

Column readers are created as prototype and then cloned for every slot.

Definition at line 134 of file RNTupleDS.cxx.

Connect()

void ROOT::Experimental::Internal::RNTupleColumnReader::Connect ( RPageSource &  source )

inline

Connect the field and its subfields to the page source.

Definition at line 140 of file RNTupleDS.cxx.

GetImpl()

void * ROOT::Experimental::Internal::RNTupleColumnReader::GetImpl ( Long64_t  entry )

inlinefinalvirtual

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

Definition at line 147 of file RNTupleDS.cxx.

Member Data Documentation

fField

std::unique_ptr<RFieldBase> ROOT::Experimental::Internal::RNTupleColumnReader::fField

private

The field backing the RDF column.

Definition at line 122 of file RNTupleDS.cxx.

fLastEntry

Long64_t ROOT::Experimental::Internal::RNTupleColumnReader::fLastEntry

private

Last entry number that was read.

Definition at line 124 of file RNTupleDS.cxx.

fValue

RFieldValue ROOT::Experimental::Internal::RNTupleColumnReader::fValue

private

The memory location used to read from fField.

Definition at line 123 of file RNTupleDS.cxx.