ROOT::Experimental::Internal::RNTupleProcessor Class Reference

Definition at line 80 of file RNTupleProcessor.hxx.

Classes
class	RFieldContext
class	RIterator

Public Member Functions
	RNTupleProcessor (const std::vector< RNTupleSourceSpec > &ntuples, std::unique_ptr< RNTupleModel > model=nullptr)
	Constructs a new RNTupleProcessor.
RIterator	begin ()
RIterator	end ()
const REntry &	GetEntry () const
	Returns a reference to the entry used by the processor.

Private Member Functions
void	ConnectFields ()
	Creates and connects concrete fields to the current page source, based on the proto-fields.
NTupleSize_t	ConnectNTuple (const RNTupleSourceSpec &ntuple)
	Connect an RNTuple for processing.

Private Attributes
std::unique_ptr< REntry >	fEntry
std::vector< RFieldContext >	fFieldContexts
std::vector< RNTupleSourceSpec >	fNTuples
std::unique_ptr< Internal::RPageSource >	fPageSource

#include <ROOT/RNTupleProcessor.hxx>

Constructor & Destructor Documentation

RNTupleProcessor()

ROOT::Experimental::Internal::RNTupleProcessor::RNTupleProcessor	(	const std::vector< RNTupleSourceSpec > &	ntuples,
		std::unique_ptr< RNTupleModel >	model = nullptr
	)

Constructs a new RNTupleProcessor.

Parameters

[in]	ntuples	The source specification (name and storage location) for each RNTuple to process.
[in]	model	The model that specifies which fields should be read by the processor. The pointer returned by RNTupleModel::MakeField can be used to access a field's value during the processor iteration. When no model is specified, it is created from the descriptor of the first RNTuple specified in ntuples.

RNTuples are processed in the order in which they are specified.

Definition at line 54 of file RNTupleProcessor.cxx.

Member Function Documentation

begin()

RIterator ROOT::Experimental::Internal::RNTupleProcessor::begin ( )

inline

Definition at line 259 of file RNTupleProcessor.hxx.

ConnectFields()

void ROOT::Experimental::Internal::RNTupleProcessor::ConnectFields ( )

private

Creates and connects concrete fields to the current page source, based on the proto-fields.

Definition at line 32 of file RNTupleProcessor.cxx.

ConnectNTuple()

ROOT::Experimental::NTupleSize_t ROOT::Experimental::Internal::RNTupleProcessor::ConnectNTuple ( const RNTupleSourceSpec &  ntuple )

private

Connect an RNTuple for processing.

Parameters

[in]

ntuple

The RNTupleSourceSpec describing the RNTuple to connect.

Returns

The number of entries in the newly-connected RNTuple.

Creates and attaches new page source for the specified RNTuple, and connects the fields that are known by the processor to it.

Definition at line 21 of file RNTupleProcessor.cxx.

end()

RIterator ROOT::Experimental::Internal::RNTupleProcessor::end ( )

inline

Definition at line 260 of file RNTupleProcessor.hxx.

GetEntry()

const REntry & ROOT::Experimental::Internal::RNTupleProcessor::GetEntry ( ) const

inline

Returns a reference to the entry used by the processor.

Returns

A reference to the entry used by the processor.

Definition at line 140 of file RNTupleProcessor.hxx.

Member Data Documentation

fEntry

std::unique_ptr<REntry> ROOT::Experimental::Internal::RNTupleProcessor::fEntry

private

Definition at line 115 of file RNTupleProcessor.hxx.

fFieldContexts

std::vector<RFieldContext> ROOT::Experimental::Internal::RNTupleProcessor::fFieldContexts

private

Definition at line 117 of file RNTupleProcessor.hxx.

fNTuples

std::vector<RNTupleSourceSpec> ROOT::Experimental::Internal::RNTupleProcessor::fNTuples

private

Definition at line 114 of file RNTupleProcessor.hxx.

fPageSource

std::unique_ptr<Internal::RPageSource> ROOT::Experimental::Internal::RNTupleProcessor::fPageSource

private

Definition at line 116 of file RNTupleProcessor.hxx.

Libraries for ROOT::Experimental::Internal::RNTupleProcessor:

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

• tree/ntuple/v7/inc/ROOT/RNTupleProcessor.hxx
• tree/ntuple/v7/src/RNTupleProcessor.cxx