TypelessDataBucket Class Reference

DataBucket holding the object as an untyped (void*) pointer. More...

#include <TypelessDataBucket.h>

Inheritance diagram for TypelessDataBucket:

Collaboration diagram for TypelessDataBucket:

Public Member Functions
	TypelessDataBucket (void *object, const SG::BaseInfoBase &bib)
	Constructor.
	~TypelessDataBucket ()
	Destructor.
virtual const CLID &	clID () const override
	Return the CLID.
virtual void *	object () override
	Return the pointer as a void*.
virtual const std::type_info &	tinfo () const override
	Return the type_info for the stored object.
virtual void *	cast (CLID clid, SG::IRegisterTransient *irt=0, bool isConst=true) override
	Return the contents of the DataBucket, converted to type given by clid.
virtual void *	cast (const std::type_info &tinfo, SG::IRegisterTransient *irt=0, bool isConst=true) override
	Return the contents of the DataBucket, converted to type given by std::type_info.
virtual void	relinquish () override
	Give up ownership of the DataBucket contents.
virtual void	lock () override
	If the held object derives from ILockable, call lock() on it.
template<class T>
T *	cast (SG::IRegisterTransient *irt=0, bool isConst=true)
	Make visible the template version from the base class.
virtual void *	cast (CLID clid, const std::type_info &tinfo, SG::IRegisterTransient *irt=0, bool isConst=true)
	Make visible the template version from the base class.

Private Attributes
void *	m_object
	The held object.
const SG::BaseInfoBase &	m_bib
	Type information for the held object.
CLID	m_clid
	CLID of the held object.

Detailed Description

DataBucket holding the object as an untyped (void*) pointer.

Type information is provided via a BaseInfoBase object.

Definition at line 25 of file TypelessDataBucket.h.

Constructor & Destructor Documentation

TypelessDataBucket()

TypelessDataBucket::TypelessDataBucket	(	void *	object,
		const SG::BaseInfoBase &	bib )

Constructor.

Parameters

object

The object to be held. The DataBucket takes ownership.

Definition at line 19 of file TypelessDataBucket.cxx.

  : m_object (object), m_bib  (bib), m_clid (bib.clid())
{
}

~TypelessDataBucket()

TypelessDataBucket::~TypelessDataBucket

(

)

Destructor.

Will destroy the held object.

Definition at line 29 of file TypelessDataBucket.cxx.

{
  if (m_object) {
    m_bib.destroy (m_object);
  }
}

Member Function Documentation

cast() [1/4]

virtual void * DataBucketBase::cast ( CLID clid, const std::type_info & tinfo, SG::IRegisterTransient * irt = 0, bool isConst = true )

virtual

Make visible the template version from the base class.

Reimplemented from DataBucketBase.

cast() [2/4]

void * TypelessDataBucket::cast ( CLID clid, SG::IRegisterTransient * irt = 0, bool isConst = true )

overridevirtual

Return the contents of the DataBucket, converted to type given by clid.

Note that only derived->base conversions are allowed here.

Parameters

clid	The class ID to which to convert.
irt	To be called if we make a new instance.
isConst	True if the object being converted is regarded as const.

Implements DataBucketBase.

Definition at line 72 of file TypelessDataBucket.cxx.

{
  if (!isConst) return nullptr;
  if (clid == m_clid) {
    return m_object;
  }
 
  return m_bib.cast (m_object, clid);
}

cast() [3/4]

void * TypelessDataBucket::cast ( const std::type_info & tinfo, SG::IRegisterTransient * irt = 0, bool isConst = true )

overridevirtual

Return the contents of the DataBucket, converted to type given by std::type_info.

Note that only derived->base conversions are allowed here.

Parameters

tinfo	The std::type_info of the type to which to convert.
irt	To be called if we make a new instance.
isConst	True if the object being converted is regarded as const.

Implements DataBucketBase.

Definition at line 93 of file TypelessDataBucket.cxx.

{
  if (!isConst) return nullptr;
  return m_bib.cast (m_object, tinfo);
}

cast() [4/4]

template<class T>

T * DataBucketBase::cast	(	SG::IRegisterTransient *	irt = 0,
		bool	isConst = true )

Make visible the template version from the base class.

clID()

const CLID & TypelessDataBucket::clID ( ) const

overridevirtual

Return the CLID.

Definition at line 40 of file TypelessDataBucket.cxx.

{
  return m_clid;
}

lock()

void TypelessDataBucket::lock ( )

overridevirtual

If the held object derives from ILockable, call lock() on it.

Not implemented for this type.

Implements DataBucketBase.

Definition at line 117 of file TypelessDataBucket.cxx.

{
  // Not implemented.
}

object()

void * TypelessDataBucket::object ( )

overridevirtual

Return the pointer as a void*.

Implements DataBucketBase.

Definition at line 49 of file TypelessDataBucket.cxx.

{
  return m_object;
}

relinquish()

void TypelessDataBucket::relinquish ( )

overridevirtual

Give up ownership of the DataBucket contents.

This leaks the contents and it is useful mainly for error handling.

Implements DataBucketBase.

Definition at line 106 of file TypelessDataBucket.cxx.

{
  m_object = nullptr;
}

tinfo()

const std::type_info & TypelessDataBucket::tinfo ( ) const

overridevirtual

Return the type_info for the stored object.

Implements DataBucketBase.

Definition at line 58 of file TypelessDataBucket.cxx.

{
  return m_bib.typeinfo();
}

Member Data Documentation

m_bib

const SG::BaseInfoBase& TypelessDataBucket::m_bib

private

Type information for the held object.

Definition at line 110 of file TypelessDataBucket.h.

m_clid

CLID TypelessDataBucket::m_clid

private

CLID of the held object.

Definition at line 113 of file TypelessDataBucket.h.

m_object

void* TypelessDataBucket::m_object

private

The held object.

Definition at line 107 of file TypelessDataBucket.h.

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

• TypelessDataBucket.h
• TypelessDataBucket.cxx