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Reference Guide
RNTupleUtil.hxx File Reference
#include <cstdint>
#include <string>
#include <vector>
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class  ROOT::Experimental::RClusterIndex
 Addresses a column element or field item relative to a particular cluster, instead of a global NTupleSize_t index. More...
struct  ROOT::Experimental::RClusterSize
 Wrap the 32bit integer in a struct in order to avoid template specialization clash with std::uint32_t. More...
class  ROOT::Experimental::RColumnSwitch
 Holds the index and the tag of a kSwitch column. More...
class  ROOT::Experimental::RNTupleVersion
 For forward and backward compatibility, attach version information to the consitituents of the file format (column, field, cluster, ntuple). More...


namespace  ROOT
 VSD Structures.
namespace  ROOT::Experimental


using ROOT::Experimental::ClusterSize_t = RClusterSize
using ROOT::Experimental::ColumnId_t = std::int64_t
 Uniquely identifies a physical column within the scope of the current process, used to tag pages. More...
using ROOT::Experimental::DescriptorId_t = std::uint64_t
 Distriniguishes elements of the same type within a descriptor, e.g. different fields. More...
using ROOT::Experimental::NTupleFlags_t = std::uint64_t
 64 possible flags to apply to all versioned entities (so far unused). More...
using ROOT::Experimental::NTupleSize_t = std::uint64_t
 Integer type long enough to hold the maximum number of entries in a column. More...
using ROOT::Experimental::RNTupleUuid = std::string
 Every NTuple is identified by a UUID. TODO(jblomer): should this be a TUUID? More...


enum  ROOT::Experimental::ENTupleStructure {
  ROOT::Experimental::kLeaf , ROOT::Experimental::kCollection , ROOT::Experimental::kRecord , ROOT::Experimental::kVariant ,
 The fields in the ntuple model tree can carry different structural information about the type system. More...


constexpr ClusterSize_t ROOT::Experimental::kInvalidClusterIndex (std::uint32_t(-1))


constexpr ColumnId_t ROOT::Experimental::kInvalidColumnId = -1
constexpr DescriptorId_t ROOT::Experimental::kInvalidDescriptorId = std::uint64_t(-1)
constexpr NTupleSize_t ROOT::Experimental::kInvalidNTupleIndex = std::uint64_t(-1)

Detailed Description

Jakob Blomer jblom.nosp@m.er@c.nosp@m.ern.c.nosp@m.h
This is part of the ROOT 7 prototype! It will change without notice. It might trigger earthquakes. Feedback is welcome!

Definition in file RNTupleUtil.hxx.