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ROOT::Experimental::RClusterDescriptor::RPageRange Class Reference
NTuple-related classes

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

Definition at line 316 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 (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, i.e.
 

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::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 399 of file RNTupleDescriptor.hxx.

◆ ExtendToFitColumnRange()

std::size_t ROOT::Experimental::RClusterDescriptor::RPageRange::ExtendToFitColumnRange ( const RColumnRange & columnRange,
const ROOT::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 228 of file RNTupleDescriptor.cxx.

◆ Find()

ROOT::Experimental::RClusterDescriptor::RPageRange::RPageInfoExtended ROOT::Experimental::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 198 of file RNTupleDescriptor.cxx.

◆ GetPageInfos() [1/2]

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

Definition at line 415 of file RNTupleDescriptor.hxx.

◆ GetPageInfos() [2/2]

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

Definition at line 414 of file RNTupleDescriptor.hxx.

◆ GetPhysicalColumnId()

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

Definition at line 411 of file RNTupleDescriptor.hxx.

◆ 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 417 of file RNTupleDescriptor.hxx.

◆ SetPhysicalColumnId()

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

Definition at line 412 of file RNTupleDescriptor.hxx.

Friends And Related Symbol Documentation

◆ Internal::RClusterDescriptorBuilder

friend class Internal::RClusterDescriptorBuilder
friend

Definition at line 317 of file RNTupleDescriptor.hxx.

Member Data Documentation

◆ fCumulativeNElements

std::vector<ROOT::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 387 of file RNTupleDescriptor.hxx.

◆ fPageInfos

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

Definition at line 390 of file RNTupleDescriptor.hxx.

◆ fPhysicalColumnId

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

Definition at line 389 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: