ROOT::Experimental::RClusterDescriptor::RPageRange Class Reference

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

Definition at line 272 of file RNTupleDescriptor.hxx.

Classes
struct	RPageInfo
	We do not need to store the element size / uncompressed page size because we know to which column the page belongs. More...
struct	RPageInfoExtended

Public Member Functions
	RPageRange ()=default
	RPageRange (const RPageRange &other)=delete
	RPageRange (RPageRange &&other)=default
RPageRange	Clone () const
RPageInfoExtended	Find (ClusterSize_t::ValueType idxInCluster) const
	Find the page in the RPageRange that contains the given element. The element must exist.
RPageRange &	operator= (const RPageRange &other)=delete
RPageRange &	operator= (RPageRange &&other)=default
bool	operator== (const RPageRange &other) const

Public Attributes
std::vector< RPageInfo >	fPageInfos
DescriptorId_t	fPhysicalColumnId = kInvalidDescriptorId

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

Private Attributes
std::vector< 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.

Friends
class	Internal::RClusterDescriptorBuilder

#include <ROOT/RNTupleDescriptor.hxx>

Constructor & Destructor Documentation

RPageRange() [1/3]

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

default

RPageRange() [2/3]

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

delete

RPageRange() [3/3]

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

default

Member Function Documentation

Clone()

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

inline

Definition at line 321 of file RNTupleDescriptor.hxx.

ExtendToFitColumnRange()

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

private

Extend this RPageRange to fit the given RColumnRange, i.e.

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 211 of file RNTupleDescriptor.cxx.

Find()

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

(

ClusterSize_t::ValueType

idxInCluster

)

const

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

Definition at line 180 of file RNTupleDescriptor.cxx.

operator=() [1/2]

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

delete

operator=() [2/2]

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

default

operator==()

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

inline

Definition at line 336 of file RNTupleDescriptor.hxx.

Friends And Related Symbol Documentation

Internal::RClusterDescriptorBuilder

friend class Internal::RClusterDescriptorBuilder

friend

Definition at line 273 of file RNTupleDescriptor.hxx.

Member Data Documentation

fCumulativeNElements

std::vector<NTupleSize_t> ROOT::Experimental::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 284 of file RNTupleDescriptor.hxx.

fPageInfos

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

Definition at line 334 of file RNTupleDescriptor.hxx.

fPhysicalColumnId

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

Definition at line 333 of file RNTupleDescriptor.hxx.

Libraries for ROOT::Experimental::RClusterDescriptor::RPageRange:

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

• tree/ntuple/v7/inc/ROOT/RNTupleDescriptor.hxx
• tree/ntuple/v7/src/RNTupleDescriptor.cxx