The field for a class with dictionary.

Definition at line 307 of file RField.hxx.

Public Member Functions
	RFieldClass (RFieldClass &&other)=default

	RFieldClass (std::string_view fieldName, std::string_view className)

	~RFieldClass ()=default

Detail::RFieldValue	CaptureValue (void *where) final
	Creates a value from a memory location with an already constructed object. More...

RFieldBase *	Clone (std::string_view newName) final

void	DestroyValue (const Detail::RFieldValue &value, bool dtorOnly=false) final
	Releases the resources acquired during GenerateValue (memory and constructor) This implementation works for simple types but needs to be overwritten for complex ones. More...

void	DoGenerateColumns () final
	Creates the backing columns corresponsing to the field type and name. More...

Detail::RFieldValue	GenerateValue (void *where) override
	Generates a tree value in a given location of size at least GetValueSize(). More...

size_t	GetAlignment () const final
	For many types, the alignment requirement is equal to the size; otherwise override. More...

size_t	GetValueSize () const override
	The number of bytes taken by a value of the appropriate type. More...

RFieldClass &	operator= (RFieldClass &&other)=default

Public Member Functions inherited from ROOT::Experimental::Detail::RFieldBase
	RFieldBase (const RFieldBase &)=delete

	RFieldBase (RFieldBase &&)=default

	RFieldBase (std::string_view name, std::string_view type, ENTupleStructure structure, bool isSimple, std::size_t nRepetitions=0)
	The constructor creates the underlying column objects and connects them to either a sink or a source. More...

virtual	~RFieldBase ()

virtual void	AcceptVisitor (RNTupleVisitor &visitor, int level) const

void	Append (const RFieldValue &value)
	Write the given value into columns. The value object has to be of the same type as the field. More...

void	Attach (std::unique_ptr< Detail::RFieldBase > child)

RIterator	begin ()

virtual RFieldValue	CaptureValue (void *where)=0
	Creates a value from a memory location with an already constructed object. More...

virtual RFieldBase *	Clone (std::string_view newName)=0

virtual void	CommitCluster ()
	Perform housekeeping tasks for global to cluster-local index translation. More...

virtual void	DestroyValue (const RFieldValue &value, bool dtorOnly=false)
	Releases the resources acquired during GenerateValue (memory and constructor) This implementation works for simple types but needs to be overwritten for complex ones. More...

RIterator	end ()

void	Flush () const
	Ensure that all received items are written from page buffers to the storage. More...

RFieldValue	GenerateValue ()
	Generates a tree value of the field type and allocates new initialized memory according to the type. More...

virtual RFieldValue	GenerateValue (void *where)=0
	Generates a tree value in a given location of size at least GetValueSize(). More...

virtual size_t	GetAlignment () const
	For many types, the alignment requirement is equal to the size; otherwise override. More...

virtual RNTupleVersion	GetFieldVersion () const
	Indicates an evolution of the mapping scheme from C++ type to columns. More...

RLevelInfo	GetLevelInfo () const

std::string	GetName () const

std::size_t	GetNRepetitions () const

const RFieldBase *	GetParent () const

ENTupleStructure	GetStructure () const

std::string	GetType () const

virtual RNTupleVersion	GetTypeVersion () const
	Indicates an evolution of the C++ type itself. More...

virtual size_t	GetValueSize () const =0
	The number of bytes taken by a value of the appropriate type. More...

bool	IsSimple () const

RFieldBase &	operator= (const RFieldBase &)=delete

RFieldBase &	operator= (RFieldBase &&)=default

void	Read (const RClusterIndex &clusterIndex, RFieldValue *value)

void	Read (NTupleSize_t globalIndex, RFieldValue *value)
	Populate a single value with data from the tree, which needs to be of the fitting type. More...

void	SetOrder (int o)

virtual void	TraverseVisitor (RNTupleVisitor &visitor, int level=0) const
	Used for the visitor design pattern, see for example RNTupleReader::Print() More...

Protected Member Functions
void	DoAppend (const Detail::RFieldValue &value) final
	Operations on values of complex types, e.g. More...

void	DoReadGlobal (NTupleSize_t globalIndex, Detail::RFieldValue *value) final

void	DoReadInCluster (const RClusterIndex &clusterIndex, Detail::RFieldValue *value) final

virtual void	DoAppend (const RFieldValue &value)
	Operations on values of complex types, e.g. More...

virtual void	DoGenerateColumns ()=0
	Creates the backing columns corresponsing to the field type and name. More...

virtual void	DoReadGlobal (NTupleSize_t globalIndex, RFieldValue *value)

virtual void	DoReadInCluster (const RClusterIndex &clusterIndex, RFieldValue *value)

Private Attributes
TClass *	fClass

std::size_t	fMaxAlignment = 1

Additional Inherited Members
Static Public Member Functions inherited from ROOT::Experimental::Detail::RFieldBase
static RFieldBase *	Create (const std::string &fieldName, const std::string &typeName)
	Factory method to resurrect a field from the stored on-disk type information. More...

Protected Attributes inherited from ROOT::Experimental::Detail::RFieldBase
std::vector< std::unique_ptr< RColumn > >	fColumns
	The columns are connected either to a sink or to a source (not to both); they are owned by the field. More...

RFieldBase *	fParent
	Sub fields point to their mother field. More...

RColumn *	fPrincipalColumn
	Points into fColumns. More...

std::vector< std::unique_ptr< RFieldBase > >	fSubFields
	Collections and classes own sub fields. More...

#include <ROOT/RField.hxx>

Inheritance diagram for ROOT::Experimental::RFieldClass:

[legend]

Constructor & Destructor Documentation

◆ RFieldClass() [1/2]

ROOT::Experimental::RFieldClass::RFieldClass	(	std::string_view	fieldName,
		std::string_view	className
	)

Definition at line 428 of file RField.cxx.

◆ RFieldClass() [2/2]

ROOT::Experimental::RFieldClass::RFieldClass ( RFieldClass && other )

default

◆ ~RFieldClass()

ROOT::Experimental::RFieldClass::~RFieldClass ( )

default

Member Function Documentation

◆ CaptureValue()

ROOT::Experimental::Detail::RFieldValue ROOT::Experimental::RFieldClass::CaptureValue ( void * where )

finalvirtual

Creates a value from a memory location with an already constructed object.

Implements ROOT::Experimental::Detail::RFieldBase.

Definition at line 497 of file RField.cxx.

◆ Clone()

ROOT::Experimental::Detail::RFieldBase * ROOT::Experimental::RFieldClass::Clone ( std::string_view newName )

finalvirtual

Implements ROOT::Experimental::Detail::RFieldBase.

Definition at line 444 of file RField.cxx.

◆ DestroyValue()

void ROOT::Experimental::RFieldClass::DestroyValue	(	const Detail::RFieldValue &	value,
		bool	dtorOnly = `false`
	)

finalvirtual

Releases the resources acquired during GenerateValue (memory and constructor) This implementation works for simple types but needs to be overwritten for complex ones.

Reimplemented from ROOT::Experimental::Detail::RFieldBase.

Definition at line 490 of file RField.cxx.

◆ DoAppend()

void ROOT::Experimental::RFieldClass::DoAppend ( const Detail::RFieldValue & value )

finalprotectedvirtual

Operations on values of complex types, e.g.

ones that involve multiple columns or for which no direct column type exists.

Reimplemented from ROOT::Experimental::Detail::RFieldBase.

Definition at line 449 of file RField.cxx.

◆ DoGenerateColumns()

void ROOT::Experimental::RFieldClass::DoGenerateColumns ( )

finalvirtual

Creates the backing columns corresponsing to the field type and name.

Implements ROOT::Experimental::Detail::RFieldBase.

Definition at line 481 of file RField.cxx.

◆ DoReadGlobal()

void ROOT::Experimental::RFieldClass::DoReadGlobal	(	NTupleSize_t	globalIndex,
		Detail::RFieldValue *	value
	)

finalprotectedvirtual

Reimplemented from ROOT::Experimental::Detail::RFieldBase.

Definition at line 459 of file RField.cxx.

◆ DoReadInCluster()

void ROOT::Experimental::RFieldClass::DoReadInCluster	(	const RClusterIndex &	clusterIndex,
		Detail::RFieldValue *	value
	)

finalprotectedvirtual

Reimplemented from ROOT::Experimental::Detail::RFieldBase.

Definition at line 470 of file RField.cxx.

◆ GenerateValue()

ROOT::Experimental::Detail::RFieldValue ROOT::Experimental::RFieldClass::GenerateValue ( void * where )

overridevirtual

Generates a tree value in a given location of size at least GetValueSize().

Assumes that where has been allocated by malloc().

Implements ROOT::Experimental::Detail::RFieldBase.

Reimplemented in ROOT::Experimental::RField< T, typename >, and ROOT::Experimental::RField< ROOT::Experimental::RClusterSize >.

Definition at line 485 of file RField.cxx.

◆ GetAlignment()

size_t ROOT::Experimental::RFieldClass::GetAlignment ( ) const

inlinefinalvirtual

For many types, the alignment requirement is equal to the size; otherwise override.

Reimplemented from ROOT::Experimental::Detail::RFieldBase.

Definition at line 329 of file RField.hxx.

◆ GetValueSize()

size_t ROOT::Experimental::RFieldClass::GetValueSize ( ) const

overridevirtual

The number of bytes taken by a value of the appropriate type.

Implements ROOT::Experimental::Detail::RFieldBase.

Definition at line 502 of file RField.cxx.

◆ operator=()

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

default

Member Data Documentation

◆ fClass

TClass* ROOT::Experimental::RFieldClass::fClass

private

Definition at line 309 of file RField.hxx.

◆ fMaxAlignment

std::size_t ROOT::Experimental::RFieldClass::fMaxAlignment = 1

private

Definition at line 310 of file RField.hxx.

Libraries for ROOT::Experimental::RFieldClass:

[legend]

Public Member Functions

Protected Member Functions

Private Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ RFieldClass() [1/2]

◆ RFieldClass() [2/2]

◆ ~RFieldClass()

Member Function Documentation

◆ CaptureValue()

◆ Clone()

◆ DestroyValue()

◆ DoAppend()

◆ DoGenerateColumns()

◆ DoReadGlobal()

◆ DoReadInCluster()

◆ GenerateValue()

◆ GetAlignment()

◆ GetValueSize()

◆ operator=()

Member Data Documentation

◆ fClass

◆ fMaxAlignment