The container field for an ntuple model, which itself has no physical representation.

Definition at line 260 of file RField.hxx.

Public Member Functions
	RFieldZero ()

void	AcceptVisitor (Detail::RFieldVisitor &visitor) const final

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

std::unique_ptr< Detail::RFieldBase >	Clone (std::string_view newName) const

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

std::unique_ptr< REntry >	GenerateEntry () const
	Generates managed values for the top-level sub fields.

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

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

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.

virtual	~RFieldBase ()

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

void	Attach (std::unique_ptr< Detail::RFieldBase > child)
	Add a new subfield to the list of nested fields.

RSchemaIterator	begin ()

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

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.

RSchemaIterator	end ()

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

RFieldValue	GenerateValue ()
	Generates an object of the field type and allocates new initialized memory according to the type.

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

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

std::string	GetName () const

NTupleSize_t	GetNElements () const

std::size_t	GetNRepetitions () const

const RFieldBase *	GetParent () const

ENTupleStructure	GetStructure () const

std::vector< const RFieldBase * >	GetSubFields () const

std::string	GetType () const

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

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.

virtual std::vector< RFieldValue >	SplitValue (const RFieldValue &value) const
	Creates the list of direct child values given a value for this field.

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

static RResult< void >	EnsureValidFieldName (std::string_view fieldName)
	Check whether a given string is a valid field name.

Protected Member Functions inherited from ROOT::Experimental::Detail::RFieldBase
virtual void	AppendImpl (const RFieldValue &value)
	Operations on values of complex types, e.g.

virtual void	ReadGlobalImpl (NTupleSize_t globalIndex, RFieldValue *value)

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

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.

RFieldBase *	fParent
	Sub fields point to their mother field.

RColumn *	fPrincipalColumn
	Points into fColumns.

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