ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection Struct Reference

Leaf count arrays require special treatment.

They are translated into untyped collections of untyped records. This class does the bookkeeping of the sub-schema for these collections.

Definition at line 181 of file RNTupleImporter.hxx.

Classes
struct	RPackedLeaf

Public Member Functions
	RImportLeafCountCollection ()=default
	RImportLeafCountCollection (const RImportLeafCountCollection &other)=delete
	RImportLeafCountCollection (RImportLeafCountCollection &&other)=default
RImportLeafCountCollection &	operator= (const RImportLeafCountCollection &other)=delete
RImportLeafCountCollection &	operator= (RImportLeafCountCollection &&other)=default

Public Attributes
std::unique_ptr< Int_t >	fCountVal
	The number of elements for the collection for a particular event.
std::vector< unsigned char >	fFieldBuffer
	The collection field memory representation.
std::string	fFieldName
	name of the untyped collection, e.g.
std::vector< size_t >	fLeafBranchIndexes
	Points to the correspondings leaf branches in fImportBranches.
std::vector< std::unique_ptr< ROOT::RFieldBase > >	fLeafFields
	The leafs of the array as we encounter them traversing the TTree schema.
Int_t	fMaxLength = 0
	Stores count leaf GetMaximum() to create large enough buffers for the array leafs.
std::vector< RPackedLeaf >	fPackedLeaves
ROOT::RRecordField *	fRecordField
	Points to the item field of the untyped collection field in the model.
std::size_t	fSizeOfRecord = 0
	Cached after Freeze() so Import() does not reallocate GetConstSubfields() on every entry.

Constructor & Destructor Documentation

RImportLeafCountCollection() [1/3]

ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::RImportLeafCountCollection ( )

default

RImportLeafCountCollection() [2/3]

ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::RImportLeafCountCollection ( const RImportLeafCountCollection & other )

delete

RImportLeafCountCollection() [3/3]

ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::RImportLeafCountCollection ( RImportLeafCountCollection && other )

default

Member Function Documentation

operator=() [1/2]

RImportLeafCountCollection & ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::operator= ( const RImportLeafCountCollection & other )

delete

operator=() [2/2]

RImportLeafCountCollection & ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::operator= ( RImportLeafCountCollection && other )

default

Member Data Documentation

fCountVal

std::unique_ptr<Int_t> ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::fCountVal

The number of elements for the collection for a particular event.

Used as a destination for SetBranchAddress() of the count leaf

Definition at line 193 of file RNTupleImporter.hxx.

fFieldBuffer

std::vector<unsigned char> ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::fFieldBuffer

The collection field memory representation.

Bound to the entry.

Definition at line 201 of file RNTupleImporter.hxx.

fFieldName

std::string ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::fFieldName

name of the untyped collection, e.g.

_collection0, _collection1, etc.

Definition at line 187 of file RNTupleImporter.hxx.

fLeafBranchIndexes

std::vector<size_t> ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::fLeafBranchIndexes

Points to the correspondings leaf branches in fImportBranches.

Definition at line 198 of file RNTupleImporter.hxx.

fLeafFields

std::vector<std::unique_ptr<ROOT::RFieldBase> > ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::fLeafFields

The leafs of the array as we encounter them traversing the TTree schema.

Eventually, the fields are moved as leaves to an untyped collection of untyped records that in turn is attached to the RNTuple model.

Definition at line 197 of file RNTupleImporter.hxx.

fMaxLength

Int_t ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::fMaxLength = 0

Stores count leaf GetMaximum() to create large enough buffers for the array leafs.

Uses Int_t because that is the return type if TLeaf::GetMaximum().

Definition at line 190 of file RNTupleImporter.hxx.

fPackedLeaves

std::vector<RPackedLeaf> ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::fPackedLeaves

Definition at line 209 of file RNTupleImporter.hxx.

fRecordField

ROOT::RRecordField* ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::fRecordField

Initial value:

=
         nullptr

Points to the item field of the untyped collection field in the model.

Definition at line 199 of file RNTupleImporter.hxx.

fSizeOfRecord

std::size_t ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection::fSizeOfRecord = 0

Cached after Freeze() so Import() does not reallocate GetConstSubfields() on every entry.

Definition at line 203 of file RNTupleImporter.hxx.

Collaboration diagram for ROOT::Experimental::RNTupleImporter::RImportLeafCountCollection:

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

• tree/ntupleutil/inc/ROOT/RNTupleImporter.hxx