The on-storage meta-data of an ntuple.

Represents the on-disk (on storage) information about an ntuple. The meta-data consists of a header and one or several footers. The header carries the ntuple schema, i.e. the fields and the associated columns and their relationships. The footer(s) carry information about one or several clusters. For every cluster, a footer stores its location and size, and for every column the range of element indexes as well as a list of pages and page locations.

The descriptor provide machine-independent (de-)serialization of headers and footers, and it provides lookup routines for ntuple objects (pages, clusters, ...). It is supposed to be usable by all RPageStorage implementations.

The serialization does not use standard ROOT streamers in order to not let it depend on libCore. The serialization uses the concept of frames: header, footer, and substructures have a preamble with version numbers and the size of the writte struct. This allows for forward and backward compatibility when the meta-data evolves.

Definition at line 304 of file RNTupleDescriptor.hxx.

Classes
class	RClusterDescriptorIterable
	Used to loop over all the clusters of an ntuple (in unspecified order) More...

class	RColumnDescriptorIterable
	Used to loop over a field's associated columns. More...

class	RFieldDescriptorIterable
	Used to loop over a field's child fields. More...

Public Member Functions
	RNTupleDescriptor ()=default

	RNTupleDescriptor (const RNTupleDescriptor &other)=delete

	RNTupleDescriptor (RNTupleDescriptor &&other)=default

DescriptorId_t	FindClusterId (DescriptorId_t columnId, NTupleSize_t index) const

DescriptorId_t	FindColumnId (DescriptorId_t fieldId, std::uint32_t columnIndex) const

DescriptorId_t	FindFieldId (std::string_view fieldName) const
	Searches for a top-level field.

DescriptorId_t	FindFieldId (std::string_view fieldName, DescriptorId_t parentId) const

DescriptorId_t	FindNextClusterId (DescriptorId_t clusterId) const

DescriptorId_t	FindPrevClusterId (DescriptorId_t clusterId) const

std::unique_ptr< RNTupleModel >	GenerateModel () const
	Re-create the C++ model from the stored meta-data.

std::string	GetAuthor () const

const RClusterDescriptor &	GetClusterDescriptor (DescriptorId_t clusterId) const

RClusterDescriptorIterable	GetClusterIterable () const

const RColumnDescriptor &	GetColumnDescriptor (DescriptorId_t columnId) const

RColumnDescriptorIterable	GetColumnIterable (const RFieldDescriptor &fieldDesc) const

RColumnDescriptorIterable	GetColumnIterable (DescriptorId_t fieldId) const

std::string	GetCustodian () const

std::string	GetDescription () const

const RFieldDescriptor &	GetFieldDescriptor (DescriptorId_t fieldId) const

RFieldDescriptorIterable	GetFieldIterable (const RFieldDescriptor &fieldDesc) const

RFieldDescriptorIterable	GetFieldIterable (const RFieldDescriptor &fieldDesc, const std::function< bool(DescriptorId_t, DescriptorId_t)> &comparator) const

RFieldDescriptorIterable	GetFieldIterable (DescriptorId_t fieldId) const

RFieldDescriptorIterable	GetFieldIterable (DescriptorId_t fieldId, const std::function< bool(DescriptorId_t, DescriptorId_t)> &comparator) const

const RFieldDescriptor &	GetFieldZero () const

DescriptorId_t	GetFieldZeroId () const
	Returns the logical parent of all top-level NTuple data fields.

std::uint32_t	GetFooterSize () const

RNTupleUuid	GetGroupUuid () const

std::uint32_t	GetHeaderSize () const

std::string	GetName () const

std::size_t	GetNClusters () const

std::size_t	GetNColumns () const

NTupleSize_t	GetNElements (DescriptorId_t columnId) const

NTupleSize_t	GetNEntries () const

std::size_t	GetNFields () const

std::uint64_t	GetOnDiskFooterSize () const

std::uint64_t	GetOnDiskHeaderSize () const

RNTupleUuid	GetOwnUuid () const

std::string	GetQualifiedFieldName (DescriptorId_t fieldId) const
	Walks up the parents of the field ID and returns a field name of the form a.b.c.d In case of invalid field ID, an empty string is returned.

std::chrono::system_clock::time_point	GetTimeStampData () const

std::chrono::system_clock::time_point	GetTimeStampWritten () const

RFieldDescriptorIterable	GetTopLevelFields () const

RFieldDescriptorIterable	GetTopLevelFields (const std::function< bool(DescriptorId_t, DescriptorId_t)> &comparator) const

RNTupleVersion	GetVersion () const

RNTupleDescriptor &	operator= (const RNTupleDescriptor &other)=delete

RNTupleDescriptor &	operator= (RNTupleDescriptor &&other)=default

bool	operator== (const RNTupleDescriptor &other) const

void	PrintInfo (std::ostream &output) const

std::uint32_t	SerializeFooter (void *buffer) const
	Serializes cluster meta data. Returns the number of bytes and fills buffer if it is not nullptr.

std::uint32_t	SerializeHeader (void *buffer) const
	We deliberately do not use ROOT's built-in serialization in order to allow for use of RNTuple's without libCore Serializes the global ntuple information as well as the column and field schemata Returns the number of bytes and fills buffer if it is not nullptr.

Static Public Member Functions
static void	LocateMetadata (const void *postscript, std::uint32_t &szHeader, std::uint32_t &szFooter)
	Given kNBytesPostscript bytes, extract the header and footer lengths in bytes.

Static Public Attributes
static constexpr std::uint16_t	kFrameVersionCurrent = 0
	In order to handle changes to the serialization routine in future ntuple versions.

static constexpr std::uint16_t	kFrameVersionMin = 0

static constexpr unsigned int	kNBytesPostscript = 16
	The last few bytes after the footer store the length of footer and header.

static constexpr unsigned int	kNBytesPreamble = 8
	The preamble is sufficient to get the length of the header.

Private Attributes
std::string	fAuthor
	The origin of the data.

std::unordered_map< DescriptorId_t, RClusterDescriptor >	fClusterDescriptors
	May contain only a subset of all the available clusters, e.g.

std::unordered_map< DescriptorId_t, RColumnDescriptor >	fColumnDescriptors

std::string	fCustodian
	The current responsible for storing the data.

std::string	fDescription
	Free text from the user.

std::unordered_map< DescriptorId_t, RFieldDescriptor >	fFieldDescriptors

RNTupleUuid	fGroupUuid
	Column sets that are created as derived sets from existing NTuples share the same group id.

std::string	fName
	The ntuple name needs to be unique in a given storage location (file)

std::uint64_t	fOnDiskFooterSize = 0
	Like fOnDiskHeaderSize, contains both cluster summaries and page locations.

std::uint64_t	fOnDiskHeaderSize = 0
	Set by the descriptor builder when deserialized.

RNTupleUuid	fOwnUuid
	Every NTuple gets a unique identifier.

std::chrono::system_clock::time_point	fTimeStampData
	The time stamp of the ntuple data (immutable)

std::chrono::system_clock::time_point	fTimeStampWritten
	The time stamp of writing the data to storage, which gets updated when re-written.

RNTupleVersion	fVersion
	The version evolves with the ntuple summary meta-data.

Friends
class	RNTupleDescriptorBuilder

#include <ROOT/RNTupleDescriptor.hxx>

Constructor & Destructor Documentation

◆ RNTupleDescriptor() [1/3]

ROOT::Experimental::RNTupleDescriptor::RNTupleDescriptor ( )

default

◆ RNTupleDescriptor() [2/3]

ROOT::Experimental::RNTupleDescriptor::RNTupleDescriptor ( const RNTupleDescriptor & other )

delete

◆ RNTupleDescriptor() [3/3]

ROOT::Experimental::RNTupleDescriptor::RNTupleDescriptor ( RNTupleDescriptor && other )

default

Member Function Documentation

◆ FindClusterId()

ROOT::Experimental::DescriptorId_t ROOT::Experimental::RNTupleDescriptor::FindClusterId	(	DescriptorId_t	columnId,
		NTupleSize_t	index
	)		const

Definition at line 705 of file RNTupleDescriptor.cxx.

◆ FindColumnId()

ROOT::Experimental::DescriptorId_t ROOT::Experimental::RNTupleDescriptor::FindColumnId	(	DescriptorId_t	fieldId,
		std::uint32_t	columnIndex
	)		const

Definition at line 694 of file RNTupleDescriptor.cxx.

◆ FindFieldId() [1/2]

ROOT::Experimental::DescriptorId_t ROOT::Experimental::RNTupleDescriptor::FindFieldId ( std::string_view fieldName ) const

Searches for a top-level field.

Definition at line 687 of file RNTupleDescriptor.cxx.

◆ FindFieldId() [2/2]

ROOT::Experimental::DescriptorId_t ROOT::Experimental::RNTupleDescriptor::FindFieldId	(	std::string_view	fieldName,
		DescriptorId_t	parentId
	)		const

Definition at line 649 of file RNTupleDescriptor.cxx.

◆ FindNextClusterId()

ROOT::Experimental::DescriptorId_t ROOT::Experimental::RNTupleDescriptor::FindNextClusterId ( DescriptorId_t clusterId ) const

Definition at line 721 of file RNTupleDescriptor.cxx.

◆ FindPrevClusterId()

ROOT::Experimental::DescriptorId_t ROOT::Experimental::RNTupleDescriptor::FindPrevClusterId ( DescriptorId_t clusterId ) const

Definition at line 736 of file RNTupleDescriptor.cxx.

◆ GenerateModel()

std::unique_ptr< ROOT::Experimental::RNTupleModel > ROOT::Experimental::RNTupleDescriptor::GenerateModel ( ) const

Re-create the C++ model from the stored meta-data.

Definition at line 748 of file RNTupleDescriptor.cxx.

◆ GetAuthor()

std::string ROOT::Experimental::RNTupleDescriptor::GetAuthor ( ) const

inline

Definition at line 580 of file RNTupleDescriptor.hxx.

◆ GetClusterDescriptor()

const RClusterDescriptor & ROOT::Experimental::RNTupleDescriptor::GetClusterDescriptor ( DescriptorId_t clusterId ) const

inline

Definition at line 535 of file RNTupleDescriptor.hxx.

◆ GetClusterIterable()

RClusterDescriptorIterable ROOT::Experimental::RNTupleDescriptor::GetClusterIterable ( ) const

inline

Definition at line 573 of file RNTupleDescriptor.hxx.

◆ GetColumnDescriptor()

const RColumnDescriptor & ROOT::Experimental::RNTupleDescriptor::GetColumnDescriptor ( DescriptorId_t columnId ) const

inline

Definition at line 532 of file RNTupleDescriptor.hxx.

◆ GetColumnIterable() [1/2]

RColumnDescriptorIterable ROOT::Experimental::RNTupleDescriptor::GetColumnIterable ( const RFieldDescriptor & fieldDesc ) const

inline

Definition at line 564 of file RNTupleDescriptor.hxx.

◆ GetColumnIterable() [2/2]

RColumnDescriptorIterable ROOT::Experimental::RNTupleDescriptor::GetColumnIterable ( DescriptorId_t fieldId ) const

inline

Definition at line 568 of file RNTupleDescriptor.hxx.

◆ GetCustodian()

std::string ROOT::Experimental::RNTupleDescriptor::GetCustodian ( ) const

inline

Definition at line 581 of file RNTupleDescriptor.hxx.

◆ GetDescription()

std::string ROOT::Experimental::RNTupleDescriptor::GetDescription ( ) const

inline

Definition at line 579 of file RNTupleDescriptor.hxx.

◆ GetFieldDescriptor()

const RFieldDescriptor & ROOT::Experimental::RNTupleDescriptor::GetFieldDescriptor ( DescriptorId_t fieldId ) const

inline

Definition at line 529 of file RNTupleDescriptor.hxx.

◆ GetFieldIterable() [1/4]

RFieldDescriptorIterable ROOT::Experimental::RNTupleDescriptor::GetFieldIterable ( const RFieldDescriptor & fieldDesc ) const

inline

Definition at line 539 of file RNTupleDescriptor.hxx.

◆ GetFieldIterable() [2/4]

RFieldDescriptorIterable ROOT::Experimental::RNTupleDescriptor::GetFieldIterable	(	const RFieldDescriptor &	fieldDesc,
		const std::function< bool(DescriptorId_t, DescriptorId_t)> &	comparator
	)		const

inline

Definition at line 542 of file RNTupleDescriptor.hxx.

◆ GetFieldIterable() [3/4]

RFieldDescriptorIterable ROOT::Experimental::RNTupleDescriptor::GetFieldIterable ( DescriptorId_t fieldId ) const

inline

Definition at line 547 of file RNTupleDescriptor.hxx.

◆ GetFieldIterable() [4/4]

RFieldDescriptorIterable ROOT::Experimental::RNTupleDescriptor::GetFieldIterable	(	DescriptorId_t	fieldId,
		const std::function< bool(DescriptorId_t, DescriptorId_t)> &	comparator
	)		const

inline

Definition at line 550 of file RNTupleDescriptor.hxx.

◆ GetFieldZero()

const RFieldDescriptor & ROOT::Experimental::RNTupleDescriptor::GetFieldZero ( ) const

inline

Definition at line 598 of file RNTupleDescriptor.hxx.

◆ GetFieldZeroId()

ROOT::Experimental::DescriptorId_t ROOT::Experimental::RNTupleDescriptor::GetFieldZeroId ( ) const

Returns the logical parent of all top-level NTuple data fields.

Definition at line 680 of file RNTupleDescriptor.cxx.

◆ GetFooterSize()

std::uint32_t ROOT::Experimental::RNTupleDescriptor::GetFooterSize ( ) const

inline

Definition at line 522 of file RNTupleDescriptor.hxx.

◆ GetGroupUuid()

RNTupleUuid ROOT::Experimental::RNTupleDescriptor::GetGroupUuid ( ) const

inline

Definition at line 586 of file RNTupleDescriptor.hxx.

◆ GetHeaderSize()

std::uint32_t ROOT::Experimental::RNTupleDescriptor::GetHeaderSize ( ) const

inline

Definition at line 519 of file RNTupleDescriptor.hxx.

◆ GetName()

std::string ROOT::Experimental::RNTupleDescriptor::GetName ( ) const

inline

Definition at line 578 of file RNTupleDescriptor.hxx.

◆ GetNClusters()

std::size_t ROOT::Experimental::RNTupleDescriptor::GetNClusters ( ) const

inline

Definition at line 590 of file RNTupleDescriptor.hxx.

◆ GetNColumns()

std::size_t ROOT::Experimental::RNTupleDescriptor::GetNColumns ( ) const

inline

Definition at line 589 of file RNTupleDescriptor.hxx.

◆ GetNElements()

ROOT::Experimental::NTupleSize_t ROOT::Experimental::RNTupleDescriptor::GetNElements ( DescriptorId_t columnId ) const

Definition at line 635 of file RNTupleDescriptor.cxx.

◆ GetNEntries()

ROOT::Experimental::NTupleSize_t ROOT::Experimental::RNTupleDescriptor::GetNEntries ( ) const

Definition at line 626 of file RNTupleDescriptor.cxx.

◆ GetNFields()

std::size_t ROOT::Experimental::RNTupleDescriptor::GetNFields ( ) const

inline

Definition at line 588 of file RNTupleDescriptor.hxx.

◆ GetOnDiskFooterSize()

std::uint64_t ROOT::Experimental::RNTupleDescriptor::GetOnDiskFooterSize ( ) const

inline

Definition at line 527 of file RNTupleDescriptor.hxx.

◆ GetOnDiskHeaderSize()

std::uint64_t ROOT::Experimental::RNTupleDescriptor::GetOnDiskHeaderSize ( ) const

inline

Definition at line 526 of file RNTupleDescriptor.hxx.

◆ GetOwnUuid()

RNTupleUuid ROOT::Experimental::RNTupleDescriptor::GetOwnUuid ( ) const

inline

Definition at line 585 of file RNTupleDescriptor.hxx.

◆ GetQualifiedFieldName()

std::string ROOT::Experimental::RNTupleDescriptor::GetQualifiedFieldName ( DescriptorId_t fieldId ) const

Walks up the parents of the field ID and returns a field name of the form a.b.c.d In case of invalid field ID, an empty string is returned.

Definition at line 666 of file RNTupleDescriptor.cxx.

◆ GetTimeStampData()

std::chrono::system_clock::time_point ROOT::Experimental::RNTupleDescriptor::GetTimeStampData ( ) const

inline

Definition at line 582 of file RNTupleDescriptor.hxx.

◆ GetTimeStampWritten()

std::chrono::system_clock::time_point ROOT::Experimental::RNTupleDescriptor::GetTimeStampWritten ( ) const

inline

Definition at line 583 of file RNTupleDescriptor.hxx.

◆ GetTopLevelFields() [1/2]

RFieldDescriptorIterable ROOT::Experimental::RNTupleDescriptor::GetTopLevelFields ( ) const

inline

Definition at line 555 of file RNTupleDescriptor.hxx.

◆ GetTopLevelFields() [2/2]

RFieldDescriptorIterable ROOT::Experimental::RNTupleDescriptor::GetTopLevelFields ( const std::function< bool(DescriptorId_t, DescriptorId_t)> & comparator ) const

inline

Definition at line 558 of file RNTupleDescriptor.hxx.

◆ GetVersion()

RNTupleVersion ROOT::Experimental::RNTupleDescriptor::GetVersion ( ) const

inline

Definition at line 584 of file RNTupleDescriptor.hxx.

◆ LocateMetadata()

void ROOT::Experimental::RNTupleDescriptor::LocateMetadata	(	const void *	postscript,
		std::uint32_t &	szHeader,
		std::uint32_t &	szFooter
	)

static

Given kNBytesPostscript bytes, extract the header and footer lengths in bytes.

Definition at line 614 of file RNTupleDescriptor.cxx.

◆ operator=() [1/2]

RNTupleDescriptor & ROOT::Experimental::RNTupleDescriptor::operator= ( const RNTupleDescriptor & other )

delete

◆ operator=() [2/2]

RNTupleDescriptor & ROOT::Experimental::RNTupleDescriptor::operator= ( RNTupleDescriptor && other )

default

◆ operator==()

bool ROOT::Experimental::RNTupleDescriptor::operator== ( const RNTupleDescriptor & other ) const

Definition at line 513 of file RNTupleDescriptor.cxx.

◆ PrintInfo()

void ROOT::Experimental::RNTupleDescriptor::PrintInfo ( std::ostream & output ) const

Definition at line 82 of file RNTupleDescriptorFmt.cxx.

◆ SerializeFooter()

std::uint32_t ROOT::Experimental::RNTupleDescriptor::SerializeFooter ( void * buffer ) const

Serializes cluster meta data. Returns the number of bytes and fills buffer if it is not nullptr.

Definition at line 566 of file RNTupleDescriptor.cxx.

◆ SerializeHeader()

std::uint32_t ROOT::Experimental::RNTupleDescriptor::SerializeHeader ( void * buffer ) const

We deliberately do not use ROOT's built-in serialization in order to allow for use of RNTuple's without libCore Serializes the global ntuple information as well as the column and field schemata Returns the number of bytes and fills buffer if it is not nullptr.

TODO(jblomer): instead of runtime testing for nullptr, there should be a template for the case where only the size of the buffer is required.

Definition at line 530 of file RNTupleDescriptor.cxx.

Friends And Related Symbol Documentation

◆ RNTupleDescriptorBuilder

friend class RNTupleDescriptorBuilder

friend

Definition at line 305 of file RNTupleDescriptor.hxx.

Member Data Documentation

◆ fAuthor

std::string ROOT::Experimental::RNTupleDescriptor::fAuthor

private

The origin of the data.

Definition at line 313 of file RNTupleDescriptor.hxx.

◆ fClusterDescriptors

std::unordered_map<DescriptorId_t, RClusterDescriptor> ROOT::Experimental::RNTupleDescriptor::fClusterDescriptors

private

May contain only a subset of all the available clusters, e.g.

the clusters of the current file from a chain of files

Definition at line 335 of file RNTupleDescriptor.hxx.

◆ fColumnDescriptors

std::unordered_map<DescriptorId_t, RColumnDescriptor> ROOT::Experimental::RNTupleDescriptor::fColumnDescriptors

private

Definition at line 332 of file RNTupleDescriptor.hxx.

◆ fCustodian

std::string ROOT::Experimental::RNTupleDescriptor::fCustodian

private

The current responsible for storing the data.

Definition at line 315 of file RNTupleDescriptor.hxx.

◆ fDescription

std::string ROOT::Experimental::RNTupleDescriptor::fDescription

private

Free text from the user.

Definition at line 311 of file RNTupleDescriptor.hxx.

◆ fFieldDescriptors

std::unordered_map<DescriptorId_t, RFieldDescriptor> ROOT::Experimental::RNTupleDescriptor::fFieldDescriptors

private

Definition at line 331 of file RNTupleDescriptor.hxx.

◆ fGroupUuid

RNTupleUuid ROOT::Experimental::RNTupleDescriptor::fGroupUuid

private

Column sets that are created as derived sets from existing NTuples share the same group id.

NTuples in the same group have the same number of entries and are supposed to contain associated data.

Definition at line 326 of file RNTupleDescriptor.hxx.

◆ fName

std::string ROOT::Experimental::RNTupleDescriptor::fName

private

The ntuple name needs to be unique in a given storage location (file)

Definition at line 309 of file RNTupleDescriptor.hxx.

◆ fOnDiskFooterSize

std::uint64_t ROOT::Experimental::RNTupleDescriptor::fOnDiskFooterSize = 0

private

Like fOnDiskHeaderSize, contains both cluster summaries and page locations.

Definition at line 329 of file RNTupleDescriptor.hxx.

◆ fOnDiskHeaderSize

std::uint64_t ROOT::Experimental::RNTupleDescriptor::fOnDiskHeaderSize = 0

private

Set by the descriptor builder when deserialized.

Definition at line 328 of file RNTupleDescriptor.hxx.

◆ fOwnUuid

RNTupleUuid ROOT::Experimental::RNTupleDescriptor::fOwnUuid

private

Every NTuple gets a unique identifier.

Definition at line 323 of file RNTupleDescriptor.hxx.

◆ fTimeStampData

std::chrono::system_clock::time_point ROOT::Experimental::RNTupleDescriptor::fTimeStampData

private

The time stamp of the ntuple data (immutable)

Definition at line 317 of file RNTupleDescriptor.hxx.

◆ fTimeStampWritten

std::chrono::system_clock::time_point ROOT::Experimental::RNTupleDescriptor::fTimeStampWritten

private

The time stamp of writing the data to storage, which gets updated when re-written.

Definition at line 319 of file RNTupleDescriptor.hxx.

◆ fVersion

RNTupleVersion ROOT::Experimental::RNTupleDescriptor::fVersion

private

The version evolves with the ntuple summary meta-data.

Definition at line 321 of file RNTupleDescriptor.hxx.

◆ kFrameVersionCurrent

constexpr std::uint16_t ROOT::Experimental::RNTupleDescriptor::kFrameVersionCurrent = 0

staticconstexpr

In order to handle changes to the serialization routine in future ntuple versions.

Definition at line 493 of file RNTupleDescriptor.hxx.

◆ kFrameVersionMin

constexpr std::uint16_t ROOT::Experimental::RNTupleDescriptor::kFrameVersionMin = 0

staticconstexpr

Definition at line 494 of file RNTupleDescriptor.hxx.

◆ kNBytesPostscript

constexpr unsigned int ROOT::Experimental::RNTupleDescriptor::kNBytesPostscript = 16

staticconstexpr

The last few bytes after the footer store the length of footer and header.

Definition at line 498 of file RNTupleDescriptor.hxx.

◆ kNBytesPreamble

constexpr unsigned int ROOT::Experimental::RNTupleDescriptor::kNBytesPreamble = 8

staticconstexpr

The preamble is sufficient to get the length of the header.

Definition at line 496 of file RNTupleDescriptor.hxx.

Libraries for ROOT::Experimental::RNTupleDescriptor:

[legend]

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

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

Classes

Public Member Functions

Static Public Member Functions

Static Public Attributes

Private Attributes

Friends

Constructor & Destructor Documentation

◆ RNTupleDescriptor() [1/3]

◆ RNTupleDescriptor() [2/3]

◆ RNTupleDescriptor() [3/3]

Member Function Documentation

◆ FindClusterId()

◆ FindColumnId()

◆ FindFieldId() [1/2]

◆ FindFieldId() [2/2]

◆ FindNextClusterId()

◆ FindPrevClusterId()

◆ GenerateModel()

◆ GetAuthor()

◆ GetClusterDescriptor()

◆ GetClusterIterable()

◆ GetColumnDescriptor()

◆ GetColumnIterable() [1/2]

◆ GetColumnIterable() [2/2]

◆ GetCustodian()

◆ GetDescription()

◆ GetFieldDescriptor()

◆ GetFieldIterable() [1/4]

◆ GetFieldIterable() [2/4]

◆ GetFieldIterable() [3/4]

◆ GetFieldIterable() [4/4]

◆ GetFieldZero()

◆ GetFieldZeroId()

◆ GetFooterSize()

◆ GetGroupUuid()

◆ GetHeaderSize()

◆ GetName()

◆ GetNClusters()

◆ GetNColumns()

◆ GetNElements()

◆ GetNEntries()

◆ GetNFields()

◆ GetOnDiskFooterSize()

◆ GetOnDiskHeaderSize()

◆ GetOwnUuid()

◆ GetQualifiedFieldName()

◆ GetTimeStampData()

◆ GetTimeStampWritten()

◆ GetTopLevelFields() [1/2]

◆ GetTopLevelFields() [2/2]

◆ GetVersion()

◆ LocateMetadata()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ operator==()

◆ PrintInfo()

◆ SerializeFooter()

◆ SerializeHeader()

Friends And Related Symbol Documentation

◆ RNTupleDescriptorBuilder

Member Data Documentation

◆ fAuthor

◆ fClusterDescriptors

◆ fColumnDescriptors

◆ fCustodian

◆ fDescription

◆ fFieldDescriptors

◆ fGroupUuid

◆ fName

◆ fOnDiskFooterSize

◆ fOnDiskHeaderSize

◆ fOwnUuid

◆ fTimeStampData

◆ fTimeStampWritten

◆ fVersion

◆ kFrameVersionCurrent

◆ kFrameVersionMin

◆ kNBytesPostscript

◆ kNBytesPreamble