StdStorage_Data Class Reference

A picture memorizing the stored in a container (for example, in a file). A StdStorage_Data object represents either: More...

#include <StdStorage_Data.hxx>

Inheritance diagram for StdStorage_Data:

Public Member Functions
	StdStorage_Data ()
	Creates an empty set of data. You explicitly create a StdStorage_Data object when preparing the set of objects to be stored together in a container (for example, in a file). Then use the function StdStorage_RootData's AddRoot to add persistent objects to the set of data. A StdStorage_Data object is also returned by the Read function of a StdStorage algorithm. Use the StdStorage_RootData's functions NumberOfRoots and Roots to find the roots which were stored in the read container.
void	Clear ()
	Makes the container empty.
occ::handle< StdStorage_HeaderData >	HeaderData ()
	Returns the header data section.
occ::handle< StdStorage_TypeData >	TypeData ()
	Returns the type data section.
occ::handle< StdStorage_RootData >	RootData ()
	Returns the root data section.
Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor.
	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing.
Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter.
virtual	~Standard_Transient ()=default
	Destructor must be virtual.
virtual const opencascade::handle< Standard_Type > &	DynamicType () const
	Returns a type descriptor about this object.
bool	IsInstance (const opencascade::handle< Standard_Type > &theType) const
	Returns a true value if this is an instance of Type.
bool	IsInstance (const char *const theTypeName) const
	Returns a true value if this is an instance of TypeName.
bool	IsKind (const opencascade::handle< Standard_Type > &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism.
bool	IsKind (const char *const theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism.
Standard_Transient *	This () const
	Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero.
int	GetRefCount () const noexcept
	Get the reference counter of this object.
void	IncrementRefCounter () noexcept
	Increments the reference counter of this object. Uses relaxed memory ordering since incrementing only requires atomicity, not synchronization with other memory operations.
int	DecrementRefCounter () noexcept
	Decrements the reference counter of this object; returns the decremented value. Uses release ordering for the decrement to ensure all writes to the object are visible before the count reaches zero. An acquire fence is added only when the count reaches zero, ensuring proper synchronization before deletion. This is more efficient than using acq_rel for every decrement.
virtual void	Delete () const
	Memory deallocator for transient classes.

Additional Inherited Members
Public Types inherited from Standard_Transient
typedef void	base_type
	Returns a type descriptor about this object.
Static Public Member Functions inherited from Standard_Transient
static constexpr const char *	get_type_name ()
	Returns a type descriptor about this object.
static const opencascade::handle< Standard_Type > &	get_type_descriptor ()
	Returns type descriptor of Standard_Transient class.

Detailed Description

A picture memorizing the stored in a container (for example, in a file). A StdStorage_Data object represents either:

• persistent data to be written into a container, or
• persistent data which are read from a container. A StdStorage_Data object is used in both the storage and retrieval operations:
• Storage mechanism: create an empty StdStorage_Data object, then add successively persistent objects (roots) to be stored using the StdStorage_RootData's function AddRoot. When the set of data is complete, write it to a container using the function Write in your StdStorage algorithm.
• Retrieval mechanism: a StdStorage_Data object is returned by the Read function from your StdStorage algorithm. Use the StdStorage_RootData's functions NumberOfRoots and Roots to find the roots which were stored in the read container. The roots of a StdStorage_Data object may share references on objects. The shared internal references of a StdStorage_Data object are maintained by the storage/retrieval mechanism. Note: References shared by objects which are contained in two distinct StdStorage_Data objects are not maintained by the storage/retrieval mechanism: external references are not supported by Storage_Schema algorithm

Constructor & Destructor Documentation

StdStorage_Data()

StdStorage_Data::StdStorage_Data

(

)

Creates an empty set of data. You explicitly create a StdStorage_Data object when preparing the set of objects to be stored together in a container (for example, in a file). Then use the function StdStorage_RootData's AddRoot to add persistent objects to the set of data. A StdStorage_Data object is also returned by the Read function of a StdStorage algorithm. Use the StdStorage_RootData's functions NumberOfRoots and Roots to find the roots which were stored in the read container.

Member Function Documentation

Clear()

void StdStorage_Data::Clear

(

)

Makes the container empty.

HeaderData()

occ::handle< StdStorage_HeaderData > StdStorage_Data::HeaderData ( )

inline

Returns the header data section.

RootData()

occ::handle< StdStorage_RootData > StdStorage_Data::RootData ( )

inline

Returns the root data section.

TypeData()

occ::handle< StdStorage_TypeData > StdStorage_Data::TypeData ( )

inline

Returns the type data section.

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

• StdStorage_Data.hxx