ROOT::RNTupleCollectionView Class Reference

A view for a collection, that can itself generate new ntuple views for its nested fields.

Definition at line 306 of file RNTupleView.hxx.

Public Member Functions
	RNTupleCollectionView (const RNTupleCollectionView &other)=delete
	RNTupleCollectionView (RNTupleCollectionView &&other)=default
	~RNTupleCollectionView ()=default
ROOT::RNTupleLocalRange	GetCollectionRange (RNTupleLocalIndex localIndex)
ROOT::RNTupleLocalRange	GetCollectionRange (ROOT::NTupleSize_t globalIndex)
RNTupleCollectionView	GetCollectionView (std::string_view fieldName)
	Provides access to a collection field, that can itself generate new RNTupleViews for its nested fields.
template<typename T >
RNTupleDirectAccessView< T >	GetDirectAccessView (std::string_view fieldName)
	Provides direct access to the I/O buffers of a mappable (sub)field.
template<typename T >
RNTupleView< T >	GetView (std::string_view fieldName)
	Provides access to an individual (sub)field.
std::uint64_t	operator() (RNTupleLocalIndex localIndex)
std::uint64_t	operator() (ROOT::NTupleSize_t globalIndex)
RNTupleCollectionView &	operator= (const RNTupleCollectionView &other)=delete
RNTupleCollectionView &	operator= (RNTupleCollectionView &&other)=default

Private Member Functions
	RNTupleCollectionView (ROOT::DescriptorId_t fieldId, const std::string &fieldName, ROOT::Internal::RPageSource *source)
ROOT::DescriptorId_t	GetFieldId (std::string_view fieldName)

Static Private Member Functions
static RNTupleCollectionView	Create (ROOT::DescriptorId_t fieldId, ROOT::Internal::RPageSource *source)

Private Attributes
ROOT::RField< RNTupleCardinality< std::uint64_t > >	fField
ROOT::Internal::RPageSource *	fSource
ROOT::RFieldBase::RValue	fValue

Friends
class	ROOT::RNTupleReader

#include <ROOT/RNTupleView.hxx>

Constructor & Destructor Documentation

RNTupleCollectionView() [1/3]

ROOT::RNTupleCollectionView::RNTupleCollectionView ( ROOT::DescriptorId_t fieldId, const std::string & fieldName, ROOT::Internal::RPageSource * source )

inlineprivate

Definition at line 314 of file RNTupleView.hxx.

RNTupleCollectionView() [2/3]

ROOT::RNTupleCollectionView::RNTupleCollectionView ( const RNTupleCollectionView & other )

delete

RNTupleCollectionView() [3/3]

ROOT::RNTupleCollectionView::RNTupleCollectionView ( RNTupleCollectionView && other )

default

~RNTupleCollectionView()

ROOT::RNTupleCollectionView::~RNTupleCollectionView ( )

default

Member Function Documentation

Create()

static RNTupleCollectionView ROOT::RNTupleCollectionView::Create ( ROOT::DescriptorId_t fieldId, ROOT::Internal::RPageSource * source )

inlinestaticprivate

Definition at line 322 of file RNTupleView.hxx.

GetCollectionRange() [1/2]

ROOT::RNTupleLocalRange ROOT::RNTupleCollectionView::GetCollectionRange ( RNTupleLocalIndex localIndex )

inline

Definition at line 364 of file RNTupleView.hxx.

GetCollectionRange() [2/2]

ROOT::RNTupleLocalRange ROOT::RNTupleCollectionView::GetCollectionRange ( ROOT::NTupleSize_t globalIndex )

inline

Definition at line 355 of file RNTupleView.hxx.

GetCollectionView()

RNTupleCollectionView ROOT::RNTupleCollectionView::GetCollectionView ( std::string_view fieldName )

inline

Provides access to a collection field, that can itself generate new RNTupleViews for its nested fields.

Raises an exception if:

• there is no field with the given name or,
• the field is not a collection

See also

ROOT::RNTupleReader::GetCollectionView(std::string_view)

Definition at line 407 of file RNTupleView.hxx.

GetDirectAccessView()

template<typename T >

RNTupleDirectAccessView< T > ROOT::RNTupleCollectionView::GetDirectAccessView ( std::string_view fieldName )

inline

Provides direct access to the I/O buffers of a mappable (sub)field.

Raises an exception if there is no field with the given name. Attempting to access the values of a direct-access view for non-mappable fields will yield compilation errors.

See also

ROOT::RNTupleReader::DirectAccessView(std::string_view)

Definition at line 393 of file RNTupleView.hxx.

GetFieldId()

ROOT::DescriptorId_t ROOT::RNTupleCollectionView::GetFieldId ( std::string_view fieldName )

inlineprivate

Definition at line 337 of file RNTupleView.hxx.

GetView()

template<typename T >

RNTupleView< T > ROOT::RNTupleCollectionView::GetView ( std::string_view fieldName )

inline

Provides access to an individual (sub)field.

Raises an exception if there is no field with the given name.

See also

ROOT::RNTupleReader::GetView(std::string_view)

Definition at line 379 of file RNTupleView.hxx.

operator()() [1/2]

std::uint64_t ROOT::RNTupleCollectionView::operator() ( RNTupleLocalIndex localIndex )

inline

See also

RNTupleView::operator()(RNTupleLocalIndex)

Definition at line 420 of file RNTupleView.hxx.

operator()() [2/2]

std::uint64_t ROOT::RNTupleCollectionView::operator() ( ROOT::NTupleSize_t globalIndex )

inline

See also

RNTupleView::operator()(ROOT::NTupleSize_t)

Definition at line 413 of file RNTupleView.hxx.

operator=() [1/2]

RNTupleCollectionView & ROOT::RNTupleCollectionView::operator= ( const RNTupleCollectionView & other )

delete

operator=() [2/2]

RNTupleCollectionView & ROOT::RNTupleCollectionView::operator= ( RNTupleCollectionView && other )

default

Friends And Related Symbol Documentation

ROOT::RNTupleReader

friend class ROOT::RNTupleReader

friend

Definition at line 307 of file RNTupleView.hxx.

Member Data Documentation

fField

ROOT::RField<RNTupleCardinality<std::uint64_t> > ROOT::RNTupleCollectionView::fField

private

Definition at line 311 of file RNTupleView.hxx.

fSource

ROOT::Internal::RPageSource* ROOT::RNTupleCollectionView::fSource

private

Definition at line 310 of file RNTupleView.hxx.

fValue

ROOT::RFieldBase::RValue ROOT::RNTupleCollectionView::fValue

private

Definition at line 312 of file RNTupleView.hxx.

Libraries for ROOT::RNTupleCollectionView:

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

• tree/ntuple/inc/ROOT/RNTupleView.hxx