The REntry is a collection of values in an ntuple corresponding to a complete row in the data set.

The entry provides a memory-managed binder for a set of values. Through shared pointers, the memory locations that are associated to values are managed.

Definition at line 51 of file REntry.hxx.

Classes
class	RFieldToken
	The field token identifies a (sub)field in this entry. More...

Public Types
using	ConstIterator_t = decltype(fValues)::const_iterator

Public Member Functions
	REntry (const REntry &other)=delete

	REntry (REntry &&other)=default

	~REntry ()=default

ConstIterator_t	begin () const

template<typename T >
void	BindRawPtr (RFieldToken token, T *rawPtr)

template<typename T >
void	BindRawPtr (std::string_view fieldName, T *rawPtr)

template<typename T >
void	BindValue (RFieldToken token, std::shared_ptr< T > objPtr)

template<typename T >
void	BindValue (std::string_view fieldName, std::shared_ptr< T > objPtr)

void	EmplaceNewValue (RFieldToken token)

void	EmplaceNewValue (std::string_view fieldName)

ConstIterator_t	end () const

std::uint64_t	GetModelId () const

template<typename T >
std::shared_ptr< T >	GetPtr (RFieldToken token) const

template<typename T >
std::shared_ptr< T >	GetPtr (std::string_view fieldName) const

std::uint64_t	GetSchemaId () const

RFieldToken	GetToken (std::string_view fieldName) const
	The ordinal of the (sub)field fieldName; can be used in other methods to address the corresponding value.

REntry &	operator= (const REntry &other)=delete

REntry &	operator= (REntry &&other)=default

Private Member Functions
	REntry ()=default

	REntry (std::uint64_t modelId, std::uint64_t schemaId)

template<typename T , typename... ArgsT>
std::shared_ptr< T >	AddValue (RField< T > &field, ArgsT &&...args)
	While building the entry, adds a new value to the list and return the value's shared pointer.

void	AddValue (RFieldBase::RValue &&value)

std::size_t	Append ()

void	EnsureMatchingModel (RFieldToken token) const

template<typename T >
void	EnsureMatchingType (RFieldToken token) const

void	Read (NTupleSize_t index)

void	UpdateValue (RFieldToken token, RFieldBase::RValue &&value)
	Update the RValue for a field in the entry.

void	UpdateValue (RFieldToken token, RFieldBase::RValue &value)

Private Attributes
std::unordered_map< std::string, std::size_t >	fFieldName2Token
	For fast lookup of token IDs given a (sub)field name present in the entry.

std::uint64_t	fModelId = 0
	The entry must be linked to a specific model, identified by a model ID.

std::uint64_t	fSchemaId = 0
	The entry and its tokens are also linked to a specific schema, identified by a schema ID.

std::vector< RFieldBase::RValue >	fValues
	Corresponds to the fields of the linked model.

Friends
class	RNTupleChainProcessor

class	RNTupleFillContext

class	RNTupleModel

class	RNTupleProcessor

class	RNTupleReader

#include <ROOT/REntry.hxx>

Member Typedef Documentation

◆ ConstIterator_t

using ROOT::Experimental::REntry::ConstIterator_t = decltype(fValues)::const_iterator

Definition at line 146 of file REntry.hxx.

Constructor & Destructor Documentation

◆ REntry() [1/4]

ROOT::Experimental::REntry::REntry ( )

privatedefault

◆ REntry() [2/4]

ROOT::Experimental::REntry::REntry	(	std::uint64_t	modelId,
		std::uint64_t	schemaId
	)

inlineexplicitprivate

Definition at line 86 of file REntry.hxx.

◆ REntry() [3/4]

ROOT::Experimental::REntry::REntry ( const REntry & other )

delete

◆ REntry() [4/4]

ROOT::Experimental::REntry::REntry ( REntry && other )

default

◆ ~REntry()

ROOT::Experimental::REntry::~REntry ( )

default

Member Function Documentation

◆ AddValue() [1/2]

template<typename T , typename... ArgsT>

std::shared_ptr< T > ROOT::Experimental::REntry::AddValue	(	RField< T > &	field,
		ArgsT &&...	args
	)

inlineprivate

While building the entry, adds a new value to the list and return the value's shared pointer.

Definition at line 96 of file REntry.hxx.

◆ AddValue() [2/2]

void ROOT::Experimental::REntry::AddValue ( RFieldBase::RValue && value )

inlineprivate

Definition at line 88 of file REntry.hxx.

◆ Append()

std::size_t ROOT::Experimental::REntry::Append ( )

inlineprivate

Definition at line 116 of file REntry.hxx.

◆ begin()

ConstIterator_t ROOT::Experimental::REntry::begin ( ) const

inline

Definition at line 217 of file REntry.hxx.

◆ BindRawPtr() [1/2]

template<typename T >

void ROOT::Experimental::REntry::BindRawPtr	(	RFieldToken	token,
		T *	rawPtr
	)

inline

Definition at line 187 of file REntry.hxx.

◆ BindRawPtr() [2/2]

template<typename T >

void ROOT::Experimental::REntry::BindRawPtr	(	std::string_view	fieldName,
		T *	rawPtr
	)

inline

Definition at line 195 of file REntry.hxx.

◆ BindValue() [1/2]

template<typename T >

void ROOT::Experimental::REntry::BindValue	(	RFieldToken	token,
		std::shared_ptr< T >	objPtr
	)

inline

Definition at line 173 of file REntry.hxx.

◆ BindValue() [2/2]

template<typename T >

void ROOT::Experimental::REntry::BindValue	(	std::string_view	fieldName,
		std::shared_ptr< T >	objPtr
	)

inline

Definition at line 181 of file REntry.hxx.

◆ EmplaceNewValue() [1/2]

void ROOT::Experimental::REntry::EmplaceNewValue ( RFieldToken token )

inline

Definition at line 164 of file REntry.hxx.

◆ EmplaceNewValue() [2/2]

void ROOT::Experimental::REntry::EmplaceNewValue ( std::string_view fieldName )

inline

Definition at line 170 of file REntry.hxx.

◆ end()

ConstIterator_t ROOT::Experimental::REntry::end ( ) const

inline

Definition at line 218 of file REntry.hxx.

◆ EnsureMatchingModel()

void ROOT::Experimental::REntry::EnsureMatchingModel ( RFieldToken token ) const

inlineprivate

Definition at line 125 of file REntry.hxx.

◆ EnsureMatchingType()

template<typename T >

void ROOT::Experimental::REntry::EnsureMatchingType ( RFieldToken token ) const

inlineprivate

Definition at line 134 of file REntry.hxx.

◆ GetModelId()

std::uint64_t ROOT::Experimental::REntry::GetModelId ( ) const

inline

Definition at line 214 of file REntry.hxx.

◆ GetPtr() [1/2]

template<typename T >

std::shared_ptr< T > ROOT::Experimental::REntry::GetPtr ( RFieldToken token ) const

inline

Definition at line 201 of file REntry.hxx.

◆ GetPtr() [2/2]

template<typename T >

std::shared_ptr< T > ROOT::Experimental::REntry::GetPtr ( std::string_view fieldName ) const

inline

Definition at line 209 of file REntry.hxx.

◆ GetSchemaId()

std::uint64_t ROOT::Experimental::REntry::GetSchemaId ( ) const

inline

Definition at line 215 of file REntry.hxx.

◆ GetToken()

RFieldToken ROOT::Experimental::REntry::GetToken ( std::string_view fieldName ) const

inline

The ordinal of the (sub)field fieldName; can be used in other methods to address the corresponding value.

Definition at line 155 of file REntry.hxx.

◆ operator=() [1/2]

REntry & ROOT::Experimental::REntry::operator= ( const REntry & other )

delete

◆ operator=() [2/2]

REntry & ROOT::Experimental::REntry::operator= ( REntry && other )

default

◆ Read()

void ROOT::Experimental::REntry::Read ( NTupleSize_t index )

inlineprivate

Definition at line 109 of file REntry.hxx.

◆ UpdateValue() [1/2]

void ROOT::Experimental::REntry::UpdateValue	(	RFieldToken	token,
		RFieldBase::RValue &&	value
	)

inlineprivate

Update the RValue for a field in the entry.

To be used when its underlying RFieldBase changes, which typically happens when page source the field values are read from changes.

Definition at line 106 of file REntry.hxx.

◆ UpdateValue() [2/2]

void ROOT::Experimental::REntry::UpdateValue	(	RFieldToken	token,
		RFieldBase::RValue &	value
	)

inlineprivate

Definition at line 107 of file REntry.hxx.

Friends And Related Symbol Documentation

◆ RNTupleChainProcessor

friend class RNTupleChainProcessor

friend

Definition at line 56 of file REntry.hxx.

◆ RNTupleFillContext

friend class RNTupleFillContext

friend

Definition at line 54 of file REntry.hxx.

◆ RNTupleModel

friend class RNTupleModel

friend

Definition at line 52 of file REntry.hxx.

◆ RNTupleProcessor

friend class RNTupleProcessor

friend

Definition at line 55 of file REntry.hxx.

◆ RNTupleReader

friend class RNTupleReader

friend

Definition at line 53 of file REntry.hxx.

Member Data Documentation

◆ fFieldName2Token

std::unordered_map<std::string, std::size_t> ROOT::Experimental::REntry::fFieldName2Token

private

For fast lookup of token IDs given a (sub)field name present in the entry.

Definition at line 81 of file REntry.hxx.

◆ fModelId

std::uint64_t ROOT::Experimental::REntry::fModelId = 0

private

The entry must be linked to a specific model, identified by a model ID.

Definition at line 75 of file REntry.hxx.

◆ fSchemaId

std::uint64_t ROOT::Experimental::REntry::fSchemaId = 0

private

The entry and its tokens are also linked to a specific schema, identified by a schema ID.

Definition at line 77 of file REntry.hxx.

◆ fValues

std::vector<RFieldBase::RValue> ROOT::Experimental::REntry::fValues

private

Corresponds to the fields of the linked model.

Definition at line 79 of file REntry.hxx.

Libraries for ROOT::Experimental::REntry:

[legend]

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

tree/ntuple/v7/inc/ROOT/REntry.hxx

Classes

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Friends

Member Typedef Documentation

◆ ConstIterator_t

Constructor & Destructor Documentation

◆ REntry() [1/4]

◆ REntry() [2/4]

◆ REntry() [3/4]

◆ REntry() [4/4]

◆ ~REntry()

Member Function Documentation

◆ AddValue() [1/2]

◆ AddValue() [2/2]

◆ Append()

◆ begin()

◆ BindRawPtr() [1/2]

◆ BindRawPtr() [2/2]

◆ BindValue() [1/2]

◆ BindValue() [2/2]

◆ EmplaceNewValue() [1/2]

◆ EmplaceNewValue() [2/2]

◆ end()

◆ EnsureMatchingModel()

◆ EnsureMatchingType()

◆ GetModelId()

◆ GetPtr() [1/2]

◆ GetPtr() [2/2]

◆ GetSchemaId()

◆ GetToken()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ Read()

◆ UpdateValue() [1/2]

◆ UpdateValue() [2/2]

Friends And Related Symbol Documentation

◆ RNTupleChainProcessor

◆ RNTupleFillContext

◆ RNTupleModel

◆ RNTupleProcessor

◆ RNTupleReader

Member Data Documentation

◆ fFieldName2Token

◆ fModelId

◆ fSchemaId

◆ fValues