template<typename CppT, EColumnType ColumnT>
class ROOT::Experimental::Detail::RColumnElement< CppT, ColumnT >

Pairs of C++ type and column type, like float and EColumnType::kReal32.

A column element points either to the content of an RFieldValue or into a memory mapped page.

The content pointed to by fRawContent can be a single element or the first element of an array. Usually the on-disk element should map bitwise to the in-memory element. Sometimes that's not the case though, for instance on big endian platforms and for exotic physical columns like 8 bit float.

This class does not provide protection around the raw pointer, fRawContent has to be managed correctly by the user of this class.

Definition at line 103 of file RColumnElement.hxx.

Public Member Functions
	RColumnElement (CppT *value)

Public Member Functions inherited from ROOT::Experimental::Detail::RColumnElementBase
	RColumnElementBase ()

	RColumnElementBase (const RColumnElementBase &elemArray, std::size_t at)

	RColumnElementBase (const RColumnElementBase &other)=default

	RColumnElementBase (RColumnElementBase &&other)=default

	RColumnElementBase (void *rawContent, unsigned int size, bool isMappable)

virtual	~RColumnElementBase ()=default

void	Deserialize (void *source, std::size_t count)

void *	GetRawContent () const

unsigned int	GetSize () const

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

RColumnElementBase &	operator= (RColumnElementBase &&other)=default

void	Serialize (void *destination, std::size_t count) const

Static Public Attributes
static constexpr bool	kIsMappable = false

Additional Inherited Members
Protected Member Functions inherited from ROOT::Experimental::Detail::RColumnElementBase
virtual void	DoDeserialize (void *, std::size_t) const

virtual void	DoSerialize (void *, std::size_t) const

Protected Attributes inherited from ROOT::Experimental::Detail::RColumnElementBase
bool	fIsMappable
	Indicates that *fRawContent is bitwise identical to the physical column element. More...

void *	fRawContent
	Points to valid C++ data, either a single value or an array of values. More...

unsigned int	fSize
	Size of the C++ value pointed to by fRawContent (not necessarily equal to the on-disk element size) More...

#include <ROOT/RColumnElement.hxx>

Inheritance diagram for ROOT::Experimental::Detail::RColumnElement< CppT, ColumnT >:

[legend]

Constructor & Destructor Documentation

◆ RColumnElement()

template<typename CppT , EColumnType ColumnT>

ROOT::Experimental::Detail::RColumnElement< CppT, ColumnT >::RColumnElement ( CppT * value )

inlineexplicit

Definition at line 106 of file RColumnElement.hxx.

Member Data Documentation

◆ kIsMappable

template<typename CppT , EColumnType ColumnT>

constexpr bool ROOT::Experimental::Detail::RColumnElement< CppT, ColumnT >::kIsMappable = false

staticconstexpr

Definition at line 105 of file RColumnElement.hxx.

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

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

Public Member Functions

Static Public Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ RColumnElement()

Member Data Documentation

◆ kIsMappable