template<typename CppT>
class ROOT::Experimental::Detail::RColumnElementLE< CppT >

Base class for columns whose on-storage representation is little-endian.

The implementation of Pack and Unpack takes care of byteswap if the memory page is big-endian.

Definition at line 204 of file RColumnElement.hxx.

Public Member Functions
	RColumnElementLE (void *rawContent, std::size_t size)

void	Pack (void dst, void src, std::size_t count) const final
	If the on-storage layout and the in-memory layout differ, packing creates an on-disk page from an in-memory page. More...

void	Unpack (void dst, void src, std::size_t count) const final
	If the on-storage layout and the in-memory layout differ, unpacking creates a memory page from an on-storage page. More...

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, std::size_t size)

virtual	~RColumnElementBase ()=default

virtual std::size_t	GetBitsOnStorage () const

std::size_t	GetPackedSize (std::size_t nElements) const

void *	GetRawContent () const

std::size_t	GetSize () const

virtual bool	IsMappable () const
	Derived, typed classes tell whether the on-storage layout is bitwise identical to the memory layout. More...

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

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

virtual void	Pack (void destination, void source, std::size_t count) const
	If the on-storage layout and the in-memory layout differ, packing creates an on-disk page from an in-memory page. More...

void	ReadFrom (void *source, std::size_t count)
	Set the column element or an array of elements from the memory location source. More...

virtual void	Unpack (void destination, void source, std::size_t count) const
	If the on-storage layout and the in-memory layout differ, unpacking creates a memory page from an on-storage page. More...

void	WriteTo (void *destination, std::size_t count) const
	Write one or multiple column elements into destination. More...

Static Public Attributes
static constexpr bool	kIsMappable = ( 0 == 1)

Additional Inherited Members
Static Public Member Functions inherited from ROOT::Experimental::Detail::RColumnElementBase
template<typename CppT = void>
static std::unique_ptr< RColumnElementBase >	Generate (EColumnType type)
	If CppT == void, use the default C++ type for the given column type. More...

template<>
std::unique_ptr< RColumnElementBase >	Generate (EColumnType type)

template<>
std::unique_ptr< ROOT::Experimental::Detail::RColumnElementBase >	Generate (EColumnType type)

static std::size_t	GetBitsOnStorage (EColumnType type)

static std::string	GetTypeName (EColumnType type)

Protected Attributes inherited from ROOT::Experimental::Detail::RColumnElementBase
void *	fRawContent
	Points to valid C++ data, either a single value or an array of values. More...

std::size_t	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::RColumnElementLE< CppT >:

[legend]

Constructor & Destructor Documentation

◆ RColumnElementLE()

template<typename CppT >

ROOT::Experimental::Detail::RColumnElementLE< CppT >::RColumnElementLE	(	void *	rawContent,
		std::size_t	size
	)

inline

Definition at line 207 of file RColumnElement.hxx.

Member Function Documentation

◆ Pack()

template<typename CppT >

void ROOT::Experimental::Detail::RColumnElementLE< CppT >::Pack	(	void *	destination,
		void *	source,
		std::size_t	count
	)		const

inlinefinalvirtual

If the on-storage layout and the in-memory layout differ, packing creates an on-disk page from an in-memory page.

Reimplemented from ROOT::Experimental::Detail::RColumnElementBase.

Definition at line 209 of file RColumnElement.hxx.

◆ Unpack()

template<typename CppT >

void ROOT::Experimental::Detail::RColumnElementLE< CppT >::Unpack	(	void *	destination,
		void *	source,
		std::size_t	count
	)		const

inlinefinalvirtual

If the on-storage layout and the in-memory layout differ, unpacking creates a memory page from an on-storage page.

Reimplemented from ROOT::Experimental::Detail::RColumnElementBase.

Definition at line 217 of file RColumnElement.hxx.

Member Data Documentation

◆ kIsMappable

template<typename CppT >

constexpr bool ROOT::Experimental::Detail::RColumnElementLE< CppT >::kIsMappable = ( 0 == 1)

staticconstexpr

Definition at line 206 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

◆ RColumnElementLE()

Member Function Documentation

◆ Pack()

◆ Unpack()

Member Data Documentation

◆ kIsMappable