template<typename CppT, typename NarrowT>
class ROOT::Experimental::Internal::RColumnElementCastLE< CppT, NarrowT >

Base class for columns storing elements of wider in-memory types, such as 64bit in-memory offsets to Index32 columns.

Definition at line 348 of file RColumnElement.hxx.

Public Member Functions
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.

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.

Public Member Functions inherited from ROOT::Experimental::Internal::RColumnElementBase
	RColumnElementBase (const RColumnElementBase &other)=default

	RColumnElementBase (RColumnElementBase &&other)=default

virtual	~RColumnElementBase ()=default

std::size_t	GetBitsOnStorage () const

std::size_t	GetPackedSize (std::size_t nElements=1U) 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.

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

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

Protected Member Functions
	RColumnElementCastLE (std::size_t size, std::size_t bitsOnStorage)

Protected Member Functions inherited from ROOT::Experimental::Internal::RColumnElementBase
	RColumnElementBase (std::size_t size, std::size_t bitsOnStorage=0)

Additional Inherited Members
Static Public Member Functions inherited from ROOT::Experimental::Internal::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.

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

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

static std::size_t	GetBitsOnStorage (EColumnType type)

static std::string	GetTypeName (EColumnType type)

Protected Attributes inherited from ROOT::Experimental::Internal::RColumnElementBase
std::size_t	fBitsOnStorage

std::size_t	fSize
	Size of the C++ value that corresponds to the on-disk element.

Inheritance diagram for ROOT::Experimental::Internal::RColumnElementCastLE< CppT, NarrowT >:

Constructor & Destructor Documentation

◆ RColumnElementCastLE()

template<typename CppT , typename NarrowT >

ROOT::Experimental::Internal::RColumnElementCastLE< CppT, NarrowT >::RColumnElementCastLE	(	std::size_t	size,
		std::size_t	bitsOnStorage
	)

inlineexplicitprotected

Definition at line 350 of file RColumnElement.hxx.

template<typename CppT , typename NarrowT >

void ROOT::Experimental::Internal::RColumnElementCastLE< CppT, NarrowT >::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.

Definition at line 357 of file RColumnElement.hxx.

template<typename CppT , typename NarrowT >

void ROOT::Experimental::Internal::RColumnElementCastLE< CppT, NarrowT >::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.

Definition at line 358 of file RColumnElement.hxx.

template<typename CppT , typename NarrowT >

staticconstexpr

Definition at line 355 of file RColumnElement.hxx.

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