ROOT::Browsable::TObjectHolder Class Reference

Holder of TObject instance.

Should not be used very often, while ownership is undefined for it

Author

Sergey Linev S.Lin.nosp@m.ev@g.nosp@m.si.de

Date

2019-10-19

Warning

This is part of the ROOT 7 prototype! It will change without notice. It might trigger earthquakes. Feedback is welcome!

Definition at line 25 of file TObjectHolder.hxx.

Public Member Functions
	TObjectHolder (TObject *obj, bool owner=false)
virtual	~TObjectHolder ()
void	Forget () final
	Clear all pointers without performing cleanup.
const TClass *	GetClass () const final
	Returns class of contained object.
const void *	GetObject () const final
	Returns direct (temporary) object pointer.
Public Member Functions inherited from ROOT::Browsable::RHolder
virtual	~RHolder ()=default
template<class T >
bool	CanCastTo () const
auto	Copy () const
	Clone container.
template<class T >
const T *	Get () const
	Returns direct object pointer cast to provided class.
template<class T >
T *	get_object ()
	Returns plains pointer on object without ownership, only can be used for TObjects.
template<class T >
std::shared_ptr< T >	get_shared ()
	Returns shared_ptr of contained object.
template<class T >
std::unique_ptr< T >	get_unique ()
	Returns unique_ptr of contained object.
template<class T >
bool	InheritsFrom () const

Protected Member Functions
void *	AccessObject () final
	Returns plain object pointer without care about ownership, should not be used often.
void	ClearROOTOwnership (TObject *obj)
	Check if object is not registered in some global lists Prevent double deletion.
RHolder *	DoCopy () const final
	Create copy of container, works only when pointer can be shared.
void *	TakeObject () final
	Return TObject instance with ownership If object is not owned by the holder, it will be cloned (except TDirectory or TTree classes)
Protected Member Functions inherited from ROOT::Browsable::RHolder
virtual void *	GetShared () const
	Returns pointer on existing shared_ptr<T>

Private Attributes
void *	fAdjusted {nullptr}
	! pointer on real class returned by fObj->IsA()
TObject *	fObj {nullptr}
	! plain holder without IO
bool	fOwner {false}
	! is TObject owner

#include <ROOT/Browsable/TObjectHolder.hxx>

Inheritance diagram for ROOT::Browsable::TObjectHolder:

Constructor & Destructor Documentation

TObjectHolder()

ROOT::Browsable::TObjectHolder::TObjectHolder ( TObject * obj, bool owner = false )

inline

Definition at line 35 of file TObjectHolder.hxx.

~TObjectHolder()

virtual ROOT::Browsable::TObjectHolder::~TObjectHolder ( )

inlinevirtual

Definition at line 48 of file TObjectHolder.hxx.

Member Function Documentation

AccessObject()

void * ROOT::Browsable::TObjectHolder::AccessObject ( )

inlinefinalprotectedvirtual

Returns plain object pointer without care about ownership, should not be used often.

Reimplemented from ROOT::Browsable::RHolder.

Definition at line 30 of file TObjectHolder.hxx.

ClearROOTOwnership()

void TObjectHolder::ClearROOTOwnership ( TObject * obj )

protected

Check if object is not registered in some global lists Prevent double deletion.

Definition at line 20 of file TObjectHolder.cxx.

DoCopy()

RHolder * ROOT::Browsable::TObjectHolder::DoCopy ( ) const

inlinefinalprotectedvirtual

Create copy of container, works only when pointer can be shared.

Reimplemented from ROOT::Browsable::RHolder.

Definition at line 32 of file TObjectHolder.hxx.

Forget()

void ROOT::Browsable::TObjectHolder::Forget ( )

inlinefinalvirtual

Clear all pointers without performing cleanup.

Reimplemented from ROOT::Browsable::RHolder.

Definition at line 53 of file TObjectHolder.hxx.

GetClass()

const TClass * ROOT::Browsable::TObjectHolder::GetClass ( ) const

inlinefinalvirtual

Returns class of contained object.

Implements ROOT::Browsable::RHolder.

Definition at line 59 of file TObjectHolder.hxx.

GetObject()

const void * ROOT::Browsable::TObjectHolder::GetObject ( ) const

inlinefinalvirtual

Returns direct (temporary) object pointer.

Implements ROOT::Browsable::RHolder.

Definition at line 60 of file TObjectHolder.hxx.

TakeObject()

void * TObjectHolder::TakeObject ( )

finalprotectedvirtual

Return TObject instance with ownership If object is not owned by the holder, it will be cloned (except TDirectory or TTree classes)

Reimplemented from ROOT::Browsable::RHolder.

Definition at line 37 of file TObjectHolder.cxx.

Member Data Documentation

fAdjusted

void* ROOT::Browsable::TObjectHolder::fAdjusted {nullptr}

private

! pointer on real class returned by fObj->IsA()

Definition at line 27 of file TObjectHolder.hxx.

fObj

TObject* ROOT::Browsable::TObjectHolder::fObj {nullptr}

private

! plain holder without IO

Definition at line 26 of file TObjectHolder.hxx.

fOwner

bool ROOT::Browsable::TObjectHolder::fOwner {false}

private

! is TObject owner

Definition at line 28 of file TObjectHolder.hxx.

Libraries for ROOT::Browsable::TObjectHolder:

---

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

• gui/browsable/inc/ROOT/Browsable/TObjectHolder.hxx
• gui/browsable/src/TObjectHolder.cxx