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ROOT::Experimental::Internal::RNTupleMerger Class Referencefinal
NTuple-related classes

Given a set of RPageSources merge them into an RPageSink, optionally changing their compression.

This can also be used to change the compression of a single RNTuple by just passing a single source.

Definition at line 79 of file RNTupleMerger.hxx.

Public Member Functions

 RNTupleMerger ()
 
RResult< void > Merge (std::span< RPageSource * > sources, RPageSink &destination, const RNTupleMergeOptions &mergeOpts=RNTupleMergeOptions())
 Merge a given set of sources into the destination.
 

Private Member Functions

void MergeCommonColumns (RClusterPool &clusterPool, DescriptorId_t clusterId, std::span< RColumnMergeInfo > commonColumns, RCluster::ColumnSet_t commonColumnSet, RSealedPageMergeData &sealedPageData, const RNTupleMergeData &mergeData)
 
void MergeSourceClusters (RPageSource &source, std::span< RColumnMergeInfo > commonColumns, std::span< RColumnMergeInfo > extraDstColumns, RNTupleMergeData &mergeData)
 

Private Attributes

std::unique_ptr< RPageAllocator > fPageAlloc
 
std::optional< TTaskGroup > fTaskGroup
 

#include <ROOT/RNTupleMerger.hxx>

Constructor & Destructor Documentation

◆ RNTupleMerger()

RNTupleMerger::RNTupleMerger ( )

Definition at line 813 of file RNTupleMerger.cxx.

Member Function Documentation

◆ Merge()

RResult< void > RNTupleMerger::Merge ( std::span< RPageSource * >  sources,
RPageSink &  destination,
const RNTupleMergeOptions &  mergeOpts = RNTupleMergeOptions() 
)

Merge a given set of sources into the destination.

Definition at line 825 of file RNTupleMerger.cxx.

◆ MergeCommonColumns()

void RNTupleMerger::MergeCommonColumns ( RClusterPool &  clusterPool,
DescriptorId_t  clusterId,
std::span< RColumnMergeInfo >  commonColumns,
RCluster::ColumnSet_t  commonColumnSet,
RSealedPageMergeData &  sealedPageData,
const RNTupleMergeData &  mergeData 
)
private

Definition at line 476 of file RNTupleMerger.cxx.

◆ MergeSourceClusters()

void RNTupleMerger::MergeSourceClusters ( RPageSource &  source,
std::span< RColumnMergeInfo >  commonColumns,
std::span< RColumnMergeInfo >  extraDstColumns,
RNTupleMergeData &  mergeData 
)
private

Definition at line 644 of file RNTupleMerger.cxx.

Member Data Documentation

◆ fPageAlloc

std::unique_ptr<RPageAllocator> ROOT::Experimental::Internal::RNTupleMerger::fPageAlloc
private

Definition at line 80 of file RNTupleMerger.hxx.

◆ fTaskGroup

std::optional<TTaskGroup> ROOT::Experimental::Internal::RNTupleMerger::fTaskGroup
private

Definition at line 81 of file RNTupleMerger.hxx.

Libraries for ROOT::Experimental::Internal::RNTupleMerger:
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The documentation for this class was generated from the following files: