A DataBucket specialized for DataVector/DataList. More...

#include <DVLDataBucket.h>

Inheritance diagram for SG::DVLDataBucket< T >:

Collaboration diagram for SG::DVLDataBucket< T >:

Public Member Functions
	DVLDataBucket ()
	Default constructor. More...

	DVLDataBucket (T *data)
	Constructor from a payload object. More...

template<class U >
	DVLDataBucket (std::unique_ptr< U > data)
	Constructor from a payload object. More...

	DVLDataBucket (const DVLDataBucket &other)
	Copy constructor. More...

virtual	~DVLDataBucket () override
	Destructor. More...

virtual void *	cast (CLID clid, IRegisterTransient *irt=0, bool isConst=true) override
	Return the contents of the `DataBucket`, converted to type given by clid. More...

virtual void *	cast (const std::type_info &tinfo, IRegisterTransient *irt=0, bool isConst=true) override
	Return the contents of the `DataBucket`, converted to type given by std::type_info. More...

virtual void *	cast (CLID clid, const std::type_info &tinfo, SG::IRegisterTransient *irt=0, bool isConst=true) override
	Return the contents of the `DataBucket`, converted to type given by clid. More...

virtual const CLID &	clID () const override
	The CLID for the class of object we're holding. More...

virtual const std::type_info &	tinfo () const override
	The std::type_info for the class of object we're holding. More...

virtual void *	object () override

	operator T* ()

	operator const T * () const

template<class T >
T *	cast (SG::IRegisterTransient *irt=0, bool isConst=true)
	Return the contents of the `DataBucket`, converted to type T. More...

virtual void	relinquish () override
	Give up ownership of the `DataBucket` contents. More...

virtual void	lock () override
	If the held object derives from `ILockable`, call `lock()` on it. More...

Static Public Member Functions
static const CLID &	classID ()

Protected Member Functions
T *	ptr ()

const T *	cptr () const

void *	tryStaticConversion (CLID clid)
	Try a conversion using static SG_BASES information. More...

void *	tryStaticConversion (const std::type_info &tinfo)
	Try a conversion using static SG_BASES information. More...

Private Types
typedef std::pair< DataModel_detail::DVLInfoBase , void >	ent_t

typedef std::vector< ent_t >	vec_t

Private Member Functions
DVLDataBucket &	operator= (const DVLDataBucket &)

Private Attributes
vec_t	m_copies

const std::type_info *	m_ti
	The std::type_info for the class of object we're holding. More...

CLID	m_clid
	The CLID for the class of object we're holding. More...

T *	m_ptr

vec_t	m_cnvcopies

Detailed Description

template<class T>
class SG::DVLDataBucket< T >

A DataBucket specialized for DataVector/DataList.

DataVector and DataList have some special conversion requirements.

In particular, we may have a situation where we're asked to convert from DataVector<D> to DataVector<B>, where these two classes are not related by inheritance, but D derived from B. (In practice, this arises when one has multiple inheritance, and can't mirror both arms with DataVector/DataList.)

This DataBucket allows such conversions to happen by making a copy of the container (as a view container) and converting the contained pointers. The new instance remains owned by the DataBucket.

We may also try to create a bucket for a ViewVector<DV> object given a pointer to its DV base class. In such a case, we detect that we actually have a ViewVector and adjust appropriately the CLID and type_info that we return.

Definition at line 47 of file DVLDataBucket.h.

Member Typedef Documentation

◆ ent_t

template<class T >

typedef std::pair<DataModel_detail::DVLInfoBase*, void*> SG::DVLDataBucket< T >::ent_t

private

Definition at line 150 of file DVLDataBucket.h.

◆ vec_t

template<class T >

typedef std::vector<ent_t> SG::DVLDataBucket< T >::vec_t

private

Definition at line 151 of file DVLDataBucket.h.

Constructor & Destructor Documentation

◆ DVLDataBucket() [1/4]

template<class T >

SG::DVLDataBucket< T >::DVLDataBucket ( )

inline

Default constructor.

Definition at line 54 of file DVLDataBucket.h.

                   :
     m_ti (nullptr),
     m_clid (CLID_NULL)
   {}

◆ DVLDataBucket() [2/4]

template<class T >

SG::DVLDataBucket< T >::DVLDataBucket ( T * data )

Constructor from a payload object.

Parameters

data	Object to hold in the bucket.

◆ DVLDataBucket() [3/4]

template<class T >

template<class U >

SG::DVLDataBucket< T >::DVLDataBucket ( std::unique_ptr< U > data )

Constructor from a payload object.

Parameters

data	Object to hold in the bucket.

◆ DVLDataBucket() [4/4]

template<class T >

SG::DVLDataBucket< T >::DVLDataBucket ( const DVLDataBucket< T > & other )

Copy constructor.

Parameters

other Bucket to copy.

◆ ~DVLDataBucket()

template<class T >

virtual SG::DVLDataBucket< T >::~DVLDataBucket ( )

overridevirtual

Destructor.

Member Function Documentation

◆ cast() [1/4]

template<class T >

virtual void* SG::DVLDataBucket< T >::cast	(	CLID	clid,
		const std::type_info &	tinfo,
		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.
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.

This allows the callee to choose whether to use clid or tinfo. Here we use clid.

Reimplemented from SG::DataBucket< T >.

◆ cast() [2/4]

template<class T >

virtual void* SG::DVLDataBucket< T >::cast	(	CLID	clid,
		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.

Reimplemented from SG::DataBucket< T >.

◆ cast() [3/4]

template<class T >

virtual void* SG::DVLDataBucket< T >::cast	(	const std::type_info &	tinfo,
		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

clid	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.

Reimplemented from SG::DataBucket< T >.

◆ cast() [4/4]

template<class T >

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

inherited

Return the contents of the DataBucket, converted to type T.

Note that only derived->base conversions are allowed here. T must have a valid Class ID for this to work.

Parameters

irt	To be called if we make a new instance.
isConst	True if the object being converted is regarded as const.

◆ classID()

template<class T >

static const CLID& SG::DataBucket< T >::classID ( )

staticinherited

◆ clID()

template<class T >

virtual const CLID& SG::DVLDataBucket< T >::clID ( ) const

overridevirtual

The CLID for the class of object we're holding.

May be different from that of the base DataVector in the case of a ViewVector.

Reimplemented from SG::DataBucket< T >.

◆ cptr()

template<class T >

const T* SG::DataBucket< T >::cptr ( ) const

inlineprotectedinherited

Definition at line 131 of file DataBucket.h.

131 { return m_ptr; }

◆ lock()

template<class T >

virtual void SG::DataBucket< T >::lock ( )

overridevirtualinherited

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

Implements DataBucketBase.

◆ object()

template<class T >

virtual void* SG::DataBucket< T >::object ( )

inlineoverridevirtualinherited

Implements DataBucketBase.

Definition at line 49 of file DataBucket.h.

     {
       typedef typename std::remove_const<T>::type T_nc;
       return const_cast<T_nc*>(m_ptr);
     }

◆ operator const T *()

template<class T >

SG::DataBucket< T >::operator const T * ( ) const

inlineinherited

Definition at line 72 of file DataBucket.h.

72 { return cptr(); }

◆ operator T*()

template<class T >

SG::DataBucket< T >::operator T* ( )

inlineinherited

Definition at line 71 of file DataBucket.h.

71 { return ptr(); } //FIXME can we do without?

◆ operator=()

template<class T >

DVLDataBucket& SG::DVLDataBucket< T >::operator= ( const DVLDataBucket< T > & )

private

◆ ptr()

template<class T >

T* SG::DataBucket< T >::ptr ( )

inlineprotectedinherited

Definition at line 130 of file DataBucket.h.

130 { return m_ptr; }

◆ relinquish()

template<class T >

virtual void SG::DataBucket< T >::relinquish ( )

inlineoverridevirtualinherited

Give up ownership of the DataBucket contents.

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

Implements DataBucketBase.

Definition at line 121 of file DataBucket.h.

121 { m_ptr=0;} //LEAKS m_ptr

◆ tinfo()

template<class T >

virtual const std::type_info& SG::DVLDataBucket< T >::tinfo ( ) const

overridevirtual

The std::type_info for the class of object we're holding.

May be different from that of the base DataVector in the case of a ViewVector.

Reimplemented from SG::DataBucket< T >.

◆ tryStaticConversion() [1/2]

template<class T >

void* SG::DataBucket< T >::tryStaticConversion ( CLID clid )

protectedinherited

Try a conversion using static SG_BASES information.

Parameters

clid	The class ID to which to convert.

This can all be unfolded at compile time, so is fast, but doesn't take into account SG_ADD_BASES.

◆ tryStaticConversion() [2/2]

template<class T >

void* SG::DataBucket< T >::tryStaticConversion ( const std::type_info & tinfo )

protectedinherited

Try a conversion using static SG_BASES information.

Parameters

tinfo The std::type_info of the type to which to convert.

This can all be unfolded at compile time, so is fast, but doesn't take into account SG_ADD_BASES.

Member Data Documentation

◆ m_clid

template<class T >

CLID SG::DVLDataBucket< T >::m_clid

private

The CLID for the class of object we're holding.

May be different from that of the base DataVector in the case of a ViewVector.

Definition at line 162 of file DVLDataBucket.h.

◆ m_cnvcopies

template<class T >

vec_t SG::DataBucket< T >::m_cnvcopies

privateinherited

Definition at line 160 of file DataBucket.h.

◆ m_copies

template<class T >

vec_t SG::DVLDataBucket< T >::m_copies

private

Definition at line 152 of file DVLDataBucket.h.

◆ m_ptr

template<class T >

T* SG::DataBucket< T >::m_ptr

privateinherited

Definition at line 155 of file DataBucket.h.

◆ m_ti

template<class T >

const std::type_info* SG::DVLDataBucket< T >::m_ti

private

The std::type_info for the class of object we're holding.

May be different from that of the base DataVector in the case of a ViewVector.

Definition at line 157 of file DVLDataBucket.h.

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

DVLDataBucket.h

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Types

Private Member Functions

Private Attributes

Detailed Description

template<class T> class SG::DVLDataBucket< T >

Member Typedef Documentation

◆ ent_t

◆ vec_t

Constructor & Destructor Documentation

◆ DVLDataBucket() [1/4]

◆ DVLDataBucket() [2/4]

◆ DVLDataBucket() [3/4]

◆ DVLDataBucket() [4/4]

◆ ~DVLDataBucket()

Member Function Documentation

◆ cast() [1/4]

◆ cast() [2/4]

◆ cast() [3/4]

◆ cast() [4/4]

◆ classID()

◆ clID()

◆ cptr()

◆ lock()

◆ object()

◆ operator const T *()

◆ operator T*()

◆ operator=()

◆ ptr()

◆ relinquish()

◆ tinfo()

◆ tryStaticConversion() [1/2]

◆ tryStaticConversion() [2/2]

Member Data Documentation

◆ m_clid

◆ m_cnvcopies

◆ m_copies

◆ m_ptr

◆ m_ti

template<class T>
class SG::DVLDataBucket< T >