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DbPersistent Class Reference

Definition of abstract persistent object. More...

#include <DbPersistent.h>

List of all members.

Public Methods
	DbPersistent ()
	Standard constructor.
virtual	~DbPersistent ()
	Standard destructor.
virtual const DbTypeInfo*	typeInfo () const = 0
virtual bool	getBuffer (long start, long length, StreamBuffer& buff) = 0
	Fill StreamBuffer from persistent storage.
virtual bool	setBuffer (long start, long length, const StreamBuffer& buff) = 0
	Write StreamBuffer to persistent storage.
virtual void	release ()
	Release object. More...
virtual bool	load (DbObject* pObject)
	Load object. More...
virtual bool	save (const DbObject* pObject)
	Save object. More...
Static Public Methods
DbPersistentGuard*	createGuard ()
	Static method to create guard. More...
DbPersistentGuard*	guard (DbObject* pObj)
	Mediator: Access transient object guard.
const DbPersistentGuard*	guard (const DbObject* pObj)
	Mediator: Access transient object guard (CONST).
void	setGuard (DbObject* pObj, DbPersistentGuard* pGuard)
	Mediator: Set transient object guard.
DbPersistent*	persistent (const DbObject* pObj)
	Access persistent representation fro transient representation.
DbObject*	create (const DbTypeInfo* type, DbPersistent* persistent, const dbHandle<DbContainer>& cntH)
	Create objects. More...
DbObject*	load (DbPersistent* persistent, const dbHandle<DbContainer>& cntH)
	Load the object from the persistent storage. More...
void*	allocate (const dbHandle<DbContainer>& nearH, const DbTypeInfo& type )
	Allocate persistent storage. More...

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Detailed Description

Definition of abstract persistent object.

Class: DbPersistent

Purpose: Mediator between real persistent implementation and the transient part exposed by the package.

Dependencies:

• DbObject definition: DbCnv/DbSvc/DbObject.h

History :

    +---------+----------------------------------------------+--------+
    |    Date |                 Comment                      | Who    |
    +---------+----------------------------------------------+--------+
    | 11/12/99| Initial version                              | MF     |
    +---------+----------------------------------------------+--------+
    

Author(s):

Markus Frank

Version:

1

Definition at line 110 of file DbPersistent.h.

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Constructor & Destructor Documentation

DbPersistent::DbPersistent ( )

Standard constructor.

DbPersistent::~DbPersistent ( ) [virtual]

Standard destructor.

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Member Function Documentation

void * DbPersistent::allocate ( const dbHandle< DbContainer >& cntH, const DbTypeInfo & type ) [static]

Allocate persistent storage. Definition at line 32 of file DbPersistent.cpp. Referenced by DbObject::operator new().

DbObject * DbPersistent::create ( const DbTypeInfo * type, DbPersistent * persistent, const dbHandle< DbContainer >& cntH ) [static]

Create objects. Definition at line 43 of file DbPersistent.cpp. Referenced by load().

DbPersistentGuard * DbPersistent::createGuard ( ) [static]

Static method to create guard. Definition at line 28 of file DbPersistent.cpp. Referenced by DbObject::operator new().

bool DbPersistent::getBuffer ( long start, long length, StreamBuffer & buff ) [pure virtual]

Fill StreamBuffer from persistent storage. Referenced by load().

const DbPersistentGuard * DbPersistent::guard ( const DbObject * pObj ) [static]

Mediator: Access transient object guard (CONST).

DbPersistentGuard * DbPersistent::guard ( DbObject * pObj ) [static]

Mediator: Access transient object guard. Referenced by load(), and save().

DbObject * DbPersistent::load ( DbPersistent * persistent, const dbHandle< DbContainer >& cntH ) [static]

Load the object from the persistent storage. Definition at line 51 of file DbPersistent.cpp.

bool DbPersistent::load ( DbObject * pObj ) [virtual]

Load object. Definition at line 58 of file DbPersistent.cpp. Referenced by load().

DbPersistent * DbPersistent::persistent ( const DbObject * pObj ) [static]

Access persistent representation fro transient representation.

void DbPersistent::release ( ) [virtual]

Release object. Definition at line 24 of file DbPersistent.cpp.

bool DbPersistent::save ( const DbObject * pObj ) [virtual]

Save object. Definition at line 71 of file DbPersistent.cpp.

bool DbPersistent::setBuffer ( long start, long length, const StreamBuffer & buff ) [pure virtual]

Write StreamBuffer to persistent storage. Referenced by save().

void DbPersistent::setGuard ( DbObject * pObj, DbPersistentGuard * pGuard ) [static]

Mediator: Set transient object guard. Referenced by allocate(), and create().

virtual const DbTypeInfo* DbPersistent::typeInfo ( ) const [pure virtual]

Referenced by load().

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

• DbPersistent.h
• DbPersistent.cpp

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