ROOT::Internal::RDF::RTreeUntypedArrayColumnReader Class Reference

RTreeColumnReader specialization for TTree values read via TTreeReaderUntypedValue.

Definition at line 75 of file RTreeColumnReader.hxx.

Public Types
enum class	ECollectionType { kRVec , kStdArray , kRVecBool , kStdVector }

Public Member Functions
	RTreeUntypedArrayColumnReader (const RTreeUntypedArrayColumnReader &)=delete
	RTreeUntypedArrayColumnReader (RTreeUntypedArrayColumnReader &&)=delete
	RTreeUntypedArrayColumnReader (TTreeReader &r, std::string_view colName, std::string_view valueTypeName, ECollectionType collType)
	~RTreeUntypedArrayColumnReader () final
RTreeUntypedArrayColumnReader &	operator= (const RTreeUntypedArrayColumnReader &)=delete
RTreeUntypedArrayColumnReader &	operator= (RTreeUntypedArrayColumnReader &&)=delete
template<typename T >
T *	TryGet (Long64_t entry)
	Return the column value for the given entry.

Private Types
using	Byte_t = std::byte

Private Member Functions
void *	GetImpl (Long64_t entry) override
void *	ReadRVec (Long64_t entry)
void *	ReadStdArray (Long64_t entry)
void *	ReadStdVector (Long64_t entry)

Private Attributes
ECollectionType	fCollectionType
bool	fCopyWarningPrinted = false
	Whether we already printed a warning about performing a copy of the TTreeReaderArray contents.
Long64_t	fLastEntry = -1
RVec< Byte_t >	fRVec {}
	We return a reference to this RVec to clients, to guarantee a stable address and contiguous memory layout.
std::vector< Byte_t >	fStdVector {}
	When the user explicitly requests std::vector<T>, we use this std::vector as a stable storage.
std::unique_ptr< ROOT::Internal::TTreeReaderUntypedArray >	fTreeArray
std::size_t	fValueSize {}
	The size of the collection value type.

#include <ROOT/RDF/RTreeColumnReader.hxx>

Inheritance diagram for ROOT::Internal::RDF::RTreeUntypedArrayColumnReader:

Member Typedef Documentation

Byte_t

using ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::Byte_t = std::byte

private

Definition at line 99 of file RTreeColumnReader.hxx.

Member Enumeration Documentation

ECollectionType

enum class ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::ECollectionType

strong

Enumerator
kRVec
kStdArray
kRVecBool
kStdVector

Definition at line 77 of file RTreeColumnReader.hxx.

Constructor & Destructor Documentation

RTreeUntypedArrayColumnReader() [1/3]

ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::RTreeUntypedArrayColumnReader	(	TTreeReader &	r,
		std::string_view	colName,
		std::string_view	valueTypeName,
		ECollectionType	collType )

Definition at line 174 of file RTreeColumnReader.cxx.

RTreeUntypedArrayColumnReader() [2/3]

ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::RTreeUntypedArrayColumnReader ( const RTreeUntypedArrayColumnReader & )

delete

RTreeUntypedArrayColumnReader() [3/3]

ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::RTreeUntypedArrayColumnReader ( RTreeUntypedArrayColumnReader && )

delete

~RTreeUntypedArrayColumnReader()

ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::~RTreeUntypedArrayColumnReader ( )

finaldefault

Member Function Documentation

GetImpl()

void * ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::GetImpl ( Long64_t entry )

overrideprivatevirtual

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

Definition at line 163 of file RTreeColumnReader.cxx.

operator=() [1/2]

RTreeUntypedArrayColumnReader & ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::operator= ( const RTreeUntypedArrayColumnReader & )

delete

operator=() [2/2]

RTreeUntypedArrayColumnReader & ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::operator= ( RTreeUntypedArrayColumnReader && )

delete

ReadRVec()

void * ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::ReadRVec ( Long64_t entry )

private

Definition at line 98 of file RTreeColumnReader.cxx.

ReadStdArray()

void * ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::ReadStdArray ( Long64_t entry )

private

Definition at line 34 of file RTreeColumnReader.cxx.

ReadStdVector()

void * ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::ReadStdVector ( Long64_t entry )

private

Definition at line 64 of file RTreeColumnReader.cxx.

TryGet()

template<typename T >

T * ROOT::Detail::RDF::RColumnReaderBase::TryGet ( Long64_t entry )

inlineinherited

Return the column value for the given entry.

Template Parameters

T	The column type

Parameters

entry

The entry number

The caller is responsible for checking that the returned value actually exists.

Definition at line 39 of file RColumnReaderBase.hxx.

Member Data Documentation

fCollectionType

ECollectionType ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::fCollectionType

private

Definition at line 97 of file RTreeColumnReader.hxx.

fCopyWarningPrinted

bool ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::fCopyWarningPrinted = false

private

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

Definition at line 112 of file RTreeColumnReader.hxx.

fLastEntry

Long64_t ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::fLastEntry = -1

private

Definition at line 106 of file RTreeColumnReader.hxx.

fRVec

RVec<Byte_t> ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::fRVec {}

private

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

Definition at line 101 of file RTreeColumnReader.hxx.

fStdVector

std::vector<Byte_t> ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::fStdVector {}

private

When the user explicitly requests std::vector<T>, we use this std::vector as a stable storage.

Definition at line 104 of file RTreeColumnReader.hxx.

fTreeArray

std::unique_ptr<ROOT::Internal::TTreeReaderUntypedArray> ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::fTreeArray

private

Definition at line 96 of file RTreeColumnReader.hxx.

fValueSize

std::size_t ROOT::Internal::RDF::RTreeUntypedArrayColumnReader::fValueSize {}

private

The size of the collection value type.

Definition at line 109 of file RTreeColumnReader.hxx.

Libraries for ROOT::Internal::RDF::RTreeUntypedArrayColumnReader:

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

• tree/dataframe/inc/ROOT/RDF/RTreeColumnReader.hxx
• tree/dataframe/src/RTreeColumnReader.cxx