wip gather page/columns metadata
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13f3211d0f
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58ef95409d
1 changed files with 26 additions and 1 deletions
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@ -10,7 +10,7 @@ String8 rntuple_description(Arena *arena, const RNTuple_Data &ntuple)
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}
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}
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internal
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internal
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void gather_metadata(Arena *arena, RMicroFileReader &reader, const RNTuple_File_Info &info)
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ROOT::Experimental::RNTupleDescriptor create_descriptor(Arena *arena, RMicroFileReader &reader, const RNTuple_File_Info &info)
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{
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{
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using namespace ROOT::Experimental;
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using namespace ROOT::Experimental;
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using namespace ROOT::Experimental::Internal;
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using namespace ROOT::Experimental::Internal;
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@ -58,6 +58,31 @@ void gather_metadata(Arena *arena, RMicroFileReader &reader, const RNTuple_File_
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arena_pop_to(scratch.arena, arena_start);
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arena_pop_to(scratch.arena, arena_start);
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}
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}
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return descriptor;
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}
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internal
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void gather_metadata(Arena *arena, RMicroFileReader &reader, const RNTuple_File_Info &info)
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{
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using namespace ROOT::Experimental;
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using namespace ROOT::Experimental::Internal;
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RNTupleDescriptor descriptor = create_descriptor(arena, reader, info);
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// for all clusters ...
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DescriptorId_t cluster_id = descriptor.FindClusterId(0, 0);
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while (cluster_id != kInvalidDescriptorId) {
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const RClusterDescriptor &cluster_desc = descriptor.GetClusterDescriptor(cluster_id);
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for (const auto &[col_id, col_range] : cluster_desc.GetColumnRangeIterable()) {
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// TODO gather column metadata
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// TODO gather page metadata
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const auto &page_range = cluster_desc.GetPageRange(col_id);
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for (const auto &page_info : page_range.fPageInfos) {
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}
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}
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}
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}
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}
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internal
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internal
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