ROOT::Experimental::RColumnDescriptor Class Reference

Meta-data stored for every column of an ntuple.

Definition at line 108 of file RNTupleDescriptor.hxx.

Public Member Functions
	RColumnDescriptor ()=default
	RColumnDescriptor (const RColumnDescriptor &other)=delete
	RColumnDescriptor (RColumnDescriptor &&other)=default
DescriptorId_t	GetFieldId () const
DescriptorId_t	GetId () const
std::uint32_t	GetIndex () const
RColumnModel	GetModel () const
RNTupleVersion	GetVersion () const
RColumnDescriptor &	operator= (const RColumnDescriptor &other)=delete
RColumnDescriptor &	operator= (RColumnDescriptor &&other)=default
bool	operator== (const RColumnDescriptor &other) const

Static Public Attributes
static constexpr std::uint16_t	kFrameVersionCurrent = 0
	In order to handle changes to the serialization routine in future ntuple versions.
static constexpr std::uint16_t	kFrameVersionMin = 0

Private Attributes
DescriptorId_t	fColumnId = kInvalidDescriptorId
DescriptorId_t	fFieldId = kInvalidDescriptorId
	Every column belongs to one and only one field.
std::uint32_t	fIndex
	A field can be serialized into several columns, which are numbered from zero to $n$.
RColumnModel	fModel
	Contains the column type and whether it is sorted.
RNTupleVersion	fVersion
	Versions can change, e.g., when new column types are added.

Friends
class	RNTupleDescriptorBuilder

#include <ROOT/RNTupleDescriptor.hxx>

Constructor & Destructor Documentation

RColumnDescriptor() [1/3]

ROOT::Experimental::RColumnDescriptor::RColumnDescriptor ( )

default

RColumnDescriptor() [2/3]

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

delete

RColumnDescriptor() [3/3]

ROOT::Experimental::RColumnDescriptor::RColumnDescriptor ( RColumnDescriptor &&  other )

default

Member Function Documentation

GetFieldId()

DescriptorId_t ROOT::Experimental::RColumnDescriptor::GetFieldId ( ) const

inline

Definition at line 139 of file RNTupleDescriptor.hxx.

GetId()

DescriptorId_t ROOT::Experimental::RColumnDescriptor::GetId ( ) const

inline

Definition at line 135 of file RNTupleDescriptor.hxx.

GetIndex()

std::uint32_t ROOT::Experimental::RColumnDescriptor::GetIndex ( ) const

inline

Definition at line 138 of file RNTupleDescriptor.hxx.

GetModel()

RColumnModel ROOT::Experimental::RColumnDescriptor::GetModel ( ) const

inline

Definition at line 137 of file RNTupleDescriptor.hxx.

GetVersion()

RNTupleVersion ROOT::Experimental::RColumnDescriptor::GetVersion ( ) const

inline

Definition at line 136 of file RNTupleDescriptor.hxx.

operator=() [1/2]

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

delete

operator=() [2/2]

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

default

operator==()

bool ROOT::Experimental::RColumnDescriptor::operator==

(

const RColumnDescriptor &

other

)

const

Definition at line 509 of file RNTupleDescriptor.cxx.

Friends And Related Symbol Documentation

RNTupleDescriptorBuilder

friend class RNTupleDescriptorBuilder

friend

Definition at line 109 of file RNTupleDescriptor.hxx.

Member Data Documentation

fColumnId

DescriptorId_t ROOT::Experimental::RColumnDescriptor::fColumnId = kInvalidDescriptorId

private

Definition at line 112 of file RNTupleDescriptor.hxx.

fFieldId

DescriptorId_t ROOT::Experimental::RColumnDescriptor::fFieldId = kInvalidDescriptorId

private

Every column belongs to one and only one field.

Definition at line 118 of file RNTupleDescriptor.hxx.

fIndex

std::uint32_t ROOT::Experimental::RColumnDescriptor::fIndex

private

A field can be serialized into several columns, which are numbered from zero to $n$.

Definition at line 120 of file RNTupleDescriptor.hxx.

fModel

RColumnModel ROOT::Experimental::RColumnDescriptor::fModel

private

Contains the column type and whether it is sorted.

Definition at line 116 of file RNTupleDescriptor.hxx.

fVersion

RNTupleVersion ROOT::Experimental::RColumnDescriptor::fVersion

private

Versions can change, e.g., when new column types are added.

Definition at line 114 of file RNTupleDescriptor.hxx.

kFrameVersionCurrent

constexpr std::uint16_t ROOT::Experimental::RColumnDescriptor::kFrameVersionCurrent = 0

staticconstexpr

In order to handle changes to the serialization routine in future ntuple versions.

Definition at line 124 of file RNTupleDescriptor.hxx.

kFrameVersionMin

constexpr std::uint16_t ROOT::Experimental::RColumnDescriptor::kFrameVersionMin = 0

staticconstexpr

Definition at line 125 of file RNTupleDescriptor.hxx.

Libraries for ROOT::Experimental::RColumnDescriptor:

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

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