ROOT::Internal::RDF::TValueGetter Class Reference

Helper class which keeps track for each slot where to get the entry.

Definition at line 204 of file RArrowDS.cxx.

Public Member Functions
	TValueGetter (size_t slots, arrow::ArrayVector chunks)
void	SetEntry (unsigned int slot, ULong64_t entry)
	Set the current entry to be retrieved.
std::vector< void * >	SlotPtrs ()
	This returns the ptr to the ptr to actual data.
void	UncachedSlotLookup (unsigned int slot, ULong64_t entry)

Private Attributes
std::vector< ArrayPtrVisitor >	fArrayVisitorPerSlot
std::vector< ULong64_t >	fChunkIndex
	Since data can be chunked in different arrays we need to construct an index which contains the first element of each chunk, so that we can quickly move to the correct chunk.
arrow::ArrayVector	fChunks
std::vector< ULong64_t >	fFirstEntryPerChunk
std::vector< ULong64_t >	fLastChunkPerSlot
std::vector< ULong64_t >	fLastEntryPerSlot
std::vector< void * >	fValuesPtrPerSlot

Constructor & Destructor Documentation

TValueGetter()

ROOT::Internal::RDF::TValueGetter::TValueGetter ( size_t  slots, arrow::ArrayVector  chunks  )

inline

Definition at line 218 of file RArrowDS.cxx.

Member Function Documentation

SetEntry()

void ROOT::Internal::RDF::TValueGetter::SetEntry ( unsigned int  slot, ULong64_t  entry  )

inline

Set the current entry to be retrieved.

Definition at line 279 of file RArrowDS.cxx.

SlotPtrs()

std::vector< void * > ROOT::Internal::RDF::TValueGetter::SlotPtrs ( )

inline

This returns the ptr to the ptr to actual data.

Definition at line 234 of file RArrowDS.cxx.

UncachedSlotLookup()

void ROOT::Internal::RDF::TValueGetter::UncachedSlotLookup ( unsigned int  slot, ULong64_t  entry  )

inline

Definition at line 245 of file RArrowDS.cxx.

Member Data Documentation

fArrayVisitorPerSlot

std::vector<ArrayPtrVisitor> ROOT::Internal::RDF::TValueGetter::fArrayVisitorPerSlot

private

Definition at line 210 of file RArrowDS.cxx.

fChunkIndex

std::vector<ULong64_t> ROOT::Internal::RDF::TValueGetter::fChunkIndex

private

Since data can be chunked in different arrays we need to construct an index which contains the first element of each chunk, so that we can quickly move to the correct chunk.

Definition at line 214 of file RArrowDS.cxx.

fChunks

arrow::ArrayVector ROOT::Internal::RDF::TValueGetter::fChunks

private

Definition at line 215 of file RArrowDS.cxx.

fFirstEntryPerChunk

std::vector<ULong64_t> ROOT::Internal::RDF::TValueGetter::fFirstEntryPerChunk

private

Definition at line 209 of file RArrowDS.cxx.

fLastChunkPerSlot

std::vector<ULong64_t> ROOT::Internal::RDF::TValueGetter::fLastChunkPerSlot

private

Definition at line 208 of file RArrowDS.cxx.

fLastEntryPerSlot

std::vector<ULong64_t> ROOT::Internal::RDF::TValueGetter::fLastEntryPerSlot

private

Definition at line 207 of file RArrowDS.cxx.

fValuesPtrPerSlot

std::vector<void *> ROOT::Internal::RDF::TValueGetter::fValuesPtrPerSlot

private

Definition at line 206 of file RArrowDS.cxx.