Base class of TTreeReaderArray.

Definition at line 28 of file TTreeReaderArray.h.

Public Member Functions
	TTreeReaderArrayBase (TTreeReader reader, const char branchname, TDictionary *dict)

EReadStatus	GetReadStatus () const override

std::size_t	GetSize () const

std::size_t	GetValueSize () const
	Returns the `sizeof` of the collection value type. Returns 0 in case the value size could not be retrieved.

bool	IsContiguous () const

bool	IsEmpty () const

Public Member Functions inherited from ROOT::Internal::TTreeReaderValueBase
virtual	~TTreeReaderValueBase ()
	Unregister from tree reader, cleanup.

void *	GetAddress ()
	Returns the memory address of the object being read.

const char *	GetBranchName () const

TLeaf *	GetLeaf ()
	If we are reading a leaf, return the corresponding TLeaf.

ESetupStatus	GetSetupStatus () const
	Return this TTreeReaderValue's setup status.

bool	IsValid () const
	Return true if the branch was setup and read correctly.

EReadStatus	ProxyRead ()

EReadStatus	ProxyReadDefaultImpl ()

template<BranchProxyRead_t Func>
ROOT::Internal::TTreeReaderValueBase::EReadStatus	ProxyReadTemplate ()
	Try to read the value from the TBranchProxy, returns the status of the read.

Protected Member Functions
void	CreateProxy () override
	Create the proxy object for our branch.

bool	GetBranchAndLeaf (TBranch &branch, TLeaf &myLeaf, TDictionary *&branchActualType, bool suppressErrorsForMissingBranch=false)
	Determine the branch / leaf and its type; reset fProxy / fSetupStatus on error.

const char *	GetBranchContentDataType (TBranch branch, TString &contentTypeName, TDictionary &dict)
	Access a branch's collection content (not the collection itself) through a proxy.

void	SetImpl (TBranch branch, TLeaf myLeaf)
	Create the TVirtualCollectionReader object for our branch.

void *	UntypedAt (std::size_t idx) const

Protected Member Functions inherited from ROOT::Internal::TTreeReaderValueBase
	TTreeReaderValueBase (const TTreeReaderValueBase &)
	Copy-construct.

	TTreeReaderValueBase (TTreeReader reader, const char branchname, TDictionary *dict, bool opaqueRead=false)
	Construct a tree value reader and register it with the reader object.

void	ErrorAboutMissingProxyIfNeeded ()

virtual const char *	GetDerivedTypeName () const =0

Detail::TBranchProxy *	GetProxy () const

void	MarkTreeReaderUnavailable ()

void	NotifyNewTree (TTree *newTree)
	The TTreeReader has switched to a new TTree. Update the leaf.

TTreeReaderValueBase &	operator= (const TTreeReaderValueBase &)
	Copy-assign.

void	RegisterWithTreeReader ()
	Register with tree reader.

TBranch *	SearchBranchWithCompositeName (TLeaf &myleaf, TDictionary &branchActualType, std::string &err)
	Search a branch the name of which contains a ".".

Protected Attributes
std::unique_ptr< TVirtualCollectionReader >	fImpl

Protected Attributes inherited from ROOT::Internal::TTreeReaderValueBase
TString	fBranchName
	Name of the branch to read data from.

TDictionary *	fDict
	Type that the branch should contain.

bool	fHaveLeaf: 1
	Whether the data is in a leaf.

bool	fHaveStaticClassOffsets: 1
	Whether !fStaticClassOffsets.empty()

TLeaf *	fLeaf = nullptr

TString	fLeafName

bool	fOpaqueRead {false}
	If true, the reader will not do any type-checking against the actual type held by the branch.

Detail::TBranchProxy *	fProxy = nullptr
	Proxy for this branch, owned by TTreeReader.

Read_t	fProxyReadFunc = &TTreeReaderValueBase::ProxyReadDefaultImpl
	! Pointer to the Read implementation to use.

EReadStatus	fReadStatus: 2
	Read status of this data access.

ESetupStatus	fSetupStatus = kSetupNotSetup
	Setup status of this data access.

std::vector< Long64_t >	fStaticClassOffsets

TTreeReader *	fTreeReader
	Tree reader we belong to.

Additional Inherited Members
Public Types inherited from ROOT::Internal::TTreeReaderValueBase
typedef bool(ROOT::Detail::TBranchProxy::*	BranchProxyRead_t) ()

enum	EReadStatus { kReadSuccess = 0 , kReadNothingYet , kReadError }

enum	ESetupStatus { kSetupMatchButEntryBeyondEnd , kSetupMakeClassModeMismatch = -9 , kSetupTreeDestructed = -8 , kSetupNotSetup = -7 , kSetupMissingCounterBranch = -6 , kSetupMissingBranch = -5 , kSetupInternalError = -4 , kSetupMissingDictionary = -3 , kSetupMismatch = -2 , kSetupNotACollection = -1 , kSetupMatch , kSetupNoCheck = 5 , kSetupMatchLeaf = 6 , kSetupMatchBranch }
	Status flags, 0 is good. More...

Protected Types inherited from ROOT::Internal::TTreeReaderValueBase
typedef EReadStatus(TTreeReaderValueBase::*	Read_t) ()

Static Protected Member Functions inherited from ROOT::Internal::TTreeReaderValueBase
static const char *	GetBranchDataType (TBranch branch, TDictionary &dict, TDictionary const *curDict)
	Retrieve the type of data stored by branch; put its dictionary into dict, return its type name.

static std::string	GetElementTypeName (const std::type_info &ti)
	Stringify the template argument.

#include <TTreeReaderArray.h>

Inheritance diagram for ROOT::Internal::TTreeReaderArrayBase:

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Constructor & Destructor Documentation

◆ TTreeReaderArrayBase()

ROOT::Internal::TTreeReaderArrayBase::TTreeReaderArrayBase	(	TTreeReader *	reader,
		const char *	branchname,
		TDictionary *	dict )

inline

Definition at line 30 of file TTreeReaderArray.h.

Member Function Documentation

◆ CreateProxy()

void ROOT::Internal::TTreeReaderArrayBase::CreateProxy ( )

overrideprotectedvirtual

Create the proxy object for our branch.

Reimplemented from ROOT::Internal::TTreeReaderValueBase.

Definition at line 533 of file TTreeReaderArray.cxx.

◆ GetBranchAndLeaf()

bool ROOT::Internal::TTreeReaderArrayBase::GetBranchAndLeaf	(	TBranch *&	branch,
		TLeaf *&	myLeaf,
		TDictionary *&	branchActualType,
		bool	suppressErrorsForMissingBranch = false )

protected

Determine the branch / leaf and its type; reset fProxy / fSetupStatus on error.

Definition at line 725 of file TTreeReaderArray.cxx.

◆ GetBranchContentDataType()

const char * ROOT::Internal::TTreeReaderArrayBase::GetBranchContentDataType	(	TBranch *	branch,
		TString &	contentTypeName,
		TDictionary *&	dict )

protected

Access a branch's collection content (not the collection itself) through a proxy.

Retrieve the type of data contained in the collection stored by branch; put its dictionary into dict, If there is no dictionary, put its type name into contentTypeName. The contentTypeName is set to NULL if the branch does not contain a collection; in that case, the type of the branch is returned. In all other cases, NULL is returned.

Definition at line 933 of file TTreeReaderArray.cxx.

◆ GetReadStatus()

EReadStatus ROOT::Internal::TTreeReaderArrayBase::GetReadStatus ( ) const

inlineoverridevirtual

Reimplemented from ROOT::Internal::TTreeReaderValueBase.

Definition at line 38 of file TTreeReaderArray.h.

◆ GetSize()

std::size_t ROOT::Internal::TTreeReaderArrayBase::GetSize ( ) const

inline

Definition at line 35 of file TTreeReaderArray.h.

◆ GetValueSize()

std::size_t ROOT::Internal::TTreeReaderArrayBase::GetValueSize ( ) const

inline

Returns the sizeof of the collection value type. Returns 0 in case the value size could not be retrieved.

Definition at line 43 of file TTreeReaderArray.h.

◆ IsContiguous()

bool ROOT::Internal::TTreeReaderArrayBase::IsContiguous ( ) const

inline

Definition at line 40 of file TTreeReaderArray.h.

◆ IsEmpty()

bool ROOT::Internal::TTreeReaderArrayBase::IsEmpty ( ) const

inline

Definition at line 36 of file TTreeReaderArray.h.

◆ SetImpl()

void ROOT::Internal::TTreeReaderArrayBase::SetImpl	(	TBranch *	branch,
		TLeaf *	myLeaf )

protected

Create the TVirtualCollectionReader object for our branch.

Definition at line 803 of file TTreeReaderArray.cxx.

◆ UntypedAt()

void * ROOT::Internal::TTreeReaderArrayBase::UntypedAt ( std::size_t idx ) const

inlineprotected

Definition at line 46 of file TTreeReaderArray.h.

Member Data Documentation

◆ fImpl

std::unique_ptr<TVirtualCollectionReader> ROOT::Internal::TTreeReaderArrayBase::fImpl

protected

Definition at line 53 of file TTreeReaderArray.h.

Libraries for ROOT::Internal::TTreeReaderArrayBase:

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

tree/treeplayer/inc/TTreeReaderArray.h
tree/treeplayer/src/TTreeReaderArray.cxx

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ TTreeReaderArrayBase()

Member Function Documentation

◆ CreateProxy()

◆ GetBranchAndLeaf()

◆ GetBranchContentDataType()

◆ GetReadStatus()

◆ GetSize()

◆ GetValueSize()

◆ IsContiguous()

◆ IsEmpty()

◆ SetImpl()

◆ UntypedAt()

Member Data Documentation

◆ fImpl