ROOT::RClusterDescriptor::RPageRange Class Reference

Records the partition of data into pages for a particular column in a particular cluster.

Definition at line 439 of file RNTupleDescriptor.hxx.

Public Member Functions
	RPageRange ()=default
	RPageRange (const RPageRange &other)=delete
	RPageRange (RPageRange &&other)=default
RPageRange	Clone () const
RPageInfoExtended	Find (ROOT::NTupleSize_t idxInCluster) const
	Find the page in the RPageRange that contains the given element. The element must exist.
std::vector< RPageInfo > &	GetPageInfos ()
const std::vector< RPageInfo > &	GetPageInfos () const
ROOT::DescriptorId_t	GetPhysicalColumnId () const
RPageRange &	operator= (const RPageRange &other)=delete
RPageRange &	operator= (RPageRange &&other)=default
bool	operator== (const RPageRange &other) const
void	SetPhysicalColumnId (ROOT::DescriptorId_t id)

Private Member Functions
std::size_t	ExtendToFitColumnRange (const RColumnRange &columnRange, const ROOT::Internal::RColumnElementBase &element, std::size_t pageSize)
	Extend this RPageRange to fit the given RColumnRange.

Private Attributes
std::vector< ROOT::NTupleSize_t >	fCumulativeNElements
	Has the same length than fPageInfos and stores the sum of the number of elements of all the pages up to and including a given index.
std::vector< RPageInfo >	fPageInfos
ROOT::DescriptorId_t	fPhysicalColumnId = ROOT::kInvalidDescriptorId

Friends
class	Internal::RClusterDescriptorBuilder

#include <ROOT/RNTupleDescriptor.hxx>

Constructor & Destructor Documentation

RPageRange() [1/3]

ROOT::RClusterDescriptor::RPageRange::RPageRange ( )

default

RPageRange() [2/3]

ROOT::RClusterDescriptor::RPageRange::RPageRange ( const RPageRange & other )

delete

RPageRange() [3/3]

ROOT::RClusterDescriptor::RPageRange::RPageRange ( RPageRange && other )

default

Member Function Documentation

Clone()

RPageRange ROOT::RClusterDescriptor::RPageRange::Clone ( ) const

inline

Definition at line 467 of file RNTupleDescriptor.hxx.

ExtendToFitColumnRange()

std::size_t ROOT::RClusterDescriptor::RPageRange::ExtendToFitColumnRange ( const RColumnRange & columnRange, const ROOT::Internal::RColumnElementBase & element, std::size_t pageSize )

private

Extend this RPageRange to fit the given RColumnRange.

To do so, prepend as many synthetic RPageInfos as needed to cover the range in columnRange. RPageInfos are constructed to contain as many elements of type element given a page size limit of pageSize (in bytes); the locator for the referenced pages is kTypePageZero. This function is used to make up RPageRanges for clusters that contain deferred columns.

Returns

The number of column elements covered by the synthesized RPageInfos

Definition at line 256 of file RNTupleDescriptor.cxx.

Find()

ROOT::RClusterDescriptor::RPageInfoExtended ROOT::RClusterDescriptor::RPageRange::Find

(

ROOT::NTupleSize_t

idxInCluster

)

const

Find the page in the RPageRange that contains the given element. The element must exist.

Definition at line 225 of file RNTupleDescriptor.cxx.

GetPageInfos() [1/2]

std::vector< RPageInfo > & ROOT::RClusterDescriptor::RPageRange::GetPageInfos ( )

inline

Definition at line 483 of file RNTupleDescriptor.hxx.

GetPageInfos() [2/2]

const std::vector< RPageInfo > & ROOT::RClusterDescriptor::RPageRange::GetPageInfos ( ) const

inline

Definition at line 482 of file RNTupleDescriptor.hxx.

GetPhysicalColumnId()

ROOT::DescriptorId_t ROOT::RClusterDescriptor::RPageRange::GetPhysicalColumnId ( ) const

inline

Definition at line 479 of file RNTupleDescriptor.hxx.

operator=() [1/2]

RPageRange & ROOT::RClusterDescriptor::RPageRange::operator= ( const RPageRange & other )

delete

operator=() [2/2]

RPageRange & ROOT::RClusterDescriptor::RPageRange::operator= ( RPageRange && other )

default

operator==()

bool ROOT::RClusterDescriptor::RPageRange::operator== ( const RPageRange & other ) const

inline

Definition at line 485 of file RNTupleDescriptor.hxx.

SetPhysicalColumnId()

void ROOT::RClusterDescriptor::RPageRange::SetPhysicalColumnId ( ROOT::DescriptorId_t id )

inline

Definition at line 480 of file RNTupleDescriptor.hxx.

Friends And Related Symbol Documentation

Internal::RClusterDescriptorBuilder

friend class Internal::RClusterDescriptorBuilder

friend

Definition at line 440 of file RNTupleDescriptor.hxx.

Member Data Documentation

fCumulativeNElements

std::vector<ROOT::NTupleSize_t> ROOT::RClusterDescriptor::RPageRange::fCumulativeNElements

private

Has the same length than fPageInfos and stores the sum of the number of elements of all the pages up to and including a given index.

Used for binary search in Find().

Definition at line 455 of file RNTupleDescriptor.hxx.

fPageInfos

std::vector<RPageInfo> ROOT::RClusterDescriptor::RPageRange::fPageInfos

private

Definition at line 458 of file RNTupleDescriptor.hxx.

fPhysicalColumnId

ROOT::DescriptorId_t ROOT::RClusterDescriptor::RPageRange::fPhysicalColumnId = ROOT::kInvalidDescriptorId

private

Definition at line 457 of file RNTupleDescriptor.hxx.

Libraries for ROOT::RClusterDescriptor::RPageRange:

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The documentation for this class was generated from the following files:

• tree/ntuple/inc/ROOT/RNTupleDescriptor.hxx
• tree/ntuple/src/RNTupleDescriptor.cxx