CDF_MetaDataDriver Class Reference

this class list the method that must be available for a specific DBMS More...

#include <CDF_MetaDataDriver.hxx>

Inheritance diagram for CDF_MetaDataDriver:

Public Member Functions
virtual bool	HasVersionCapability ()
	returns true if the MetaDataDriver can manage different versions of a Data. By default, returns false.
virtual void	CreateDependsOn (const occ::handle< CDM_MetaData > &aFirstData, const occ::handle< CDM_MetaData > &aSecondData)
	Creates a "Depends On" relation between two Datas. By default does nothing.
virtual void	CreateReference (const occ::handle< CDM_MetaData > &aFrom, const occ::handle< CDM_MetaData > &aTo, const int aReferenceIdentifier, const int aToDocumentVersion)
virtual bool	HasVersion (const TCollection_ExtendedString &aFolder, const TCollection_ExtendedString &aName)
	by default return true.
virtual TCollection_ExtendedString	BuildFileName (const occ::handle< CDM_Document > &aDocument)=0
virtual TCollection_ExtendedString	SetName (const occ::handle< CDM_Document > &aDocument, const TCollection_ExtendedString &aName)
	this method is useful if the name of an object depends on the metadatadriver. For example a Driver based on the operating system can choose to add the extension of file to create to the object.
virtual bool	Find (const TCollection_ExtendedString &aFolder, const TCollection_ExtendedString &aName, const TCollection_ExtendedString &aVersion)=0
	should indicate whether meta-data exist in the DBMS corresponding to the Data. aVersion may be NULL;
virtual bool	HasReadPermission (const TCollection_ExtendedString &aFolder, const TCollection_ExtendedString &aName, const TCollection_ExtendedString &aVersion)=0
virtual occ::handle< CDM_MetaData >	MetaData (const TCollection_ExtendedString &aFolder, const TCollection_ExtendedString &aName, const TCollection_ExtendedString &aVersion)=0
	should return the MetaData stored in the DBMS with the meta-data corresponding to the Data. If the MetaDataDriver has version management capabilities the version has to be set in the returned MetaData. aVersion may be NULL MetaData is called by GetMetaData If the version is set to NULL, MetaData should return the last version of the metadata
virtual occ::handle< CDM_MetaData >	LastVersion (const occ::handle< CDM_MetaData > &aMetaData)
	by default returns aMetaDATA should return the MetaData stored in the DBMS with the meta-data corresponding to the path. If the MetaDataDriver has version management capabilities the version has to be set in the returned MetaData. MetaData is called by GetMetaData If the version is not included in the path, MetaData should return the last version of the metadata is deferred;
virtual occ::handle< CDM_MetaData >	CreateMetaData (const occ::handle< CDM_Document > &aDocument, const TCollection_ExtendedString &aFileName)=0
	should create meta-data corresponding to aData and maintaining a meta-link between these meta-data and aFileName CreateMetaData is called by CreateData If the metadata-driver has version capabilities, version must be set in the returned Data.
virtual bool	FindFolder (const TCollection_ExtendedString &aFolder)=0
virtual TCollection_ExtendedString	DefaultFolder ()=0
virtual occ::handle< PCDM_ReferenceIterator >	ReferenceIterator (const occ::handle< Message_Messenger > &theMessageDriver)
bool	Find (const TCollection_ExtendedString &aFolder, const TCollection_ExtendedString &aName)
	calls Find with an empty version
occ::handle< CDM_MetaData >	MetaData (const TCollection_ExtendedString &aFolder, const TCollection_ExtendedString &aName)
	calls MetaData with an empty version
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.

Protected Member Functions
	CDF_MetaDataDriver ()

Additional Inherited Members
typedef void	base_type
	Returns a type descriptor about this object.
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

this class list the method that must be available for a specific DBMS

Constructor & Destructor Documentation

CDF_MetaDataDriver()

CDF_MetaDataDriver::CDF_MetaDataDriver ( )

protected

Member Function Documentation

BuildFileName()

virtual TCollection_ExtendedString CDF_MetaDataDriver::BuildFileName ( const occ::handle< CDM_Document > & aDocument )

pure virtual

Implemented in CDF_FWOSDriver.

CreateDependsOn()

virtual void CDF_MetaDataDriver::CreateDependsOn ( const occ::handle< CDM_MetaData > & aFirstData, const occ::handle< CDM_MetaData > & aSecondData )

virtual

Creates a "Depends On" relation between two Datas. By default does nothing.

CreateMetaData()

virtual occ::handle< CDM_MetaData > CDF_MetaDataDriver::CreateMetaData ( const occ::handle< CDM_Document > & aDocument, const TCollection_ExtendedString & aFileName )

pure virtual

should create meta-data corresponding to aData and maintaining a meta-link between these meta-data and aFileName CreateMetaData is called by CreateData If the metadata-driver has version capabilities, version must be set in the returned Data.

CreateReference()

virtual void CDF_MetaDataDriver::CreateReference ( const occ::handle< CDM_MetaData > & aFrom, const occ::handle< CDM_MetaData > & aTo, const int aReferenceIdentifier, const int aToDocumentVersion )

virtual

DefaultFolder()

virtual TCollection_ExtendedString CDF_MetaDataDriver::DefaultFolder ( )

pure virtual

Implemented in CDF_FWOSDriver.

Find() [1/2]

bool CDF_MetaDataDriver::Find	(	const TCollection_ExtendedString &	aFolder,
		const TCollection_ExtendedString &	aName )

calls Find with an empty version

Find() [2/2]

virtual bool CDF_MetaDataDriver::Find ( const TCollection_ExtendedString & aFolder, const TCollection_ExtendedString & aName, const TCollection_ExtendedString & aVersion )

pure virtual

should indicate whether meta-data exist in the DBMS corresponding to the Data. aVersion may be NULL;

Implemented in CDF_FWOSDriver.

FindFolder()

virtual bool CDF_MetaDataDriver::FindFolder ( const TCollection_ExtendedString & aFolder )

pure virtual

Implemented in CDF_FWOSDriver.

HasReadPermission()

virtual bool CDF_MetaDataDriver::HasReadPermission ( const TCollection_ExtendedString & aFolder, const TCollection_ExtendedString & aName, const TCollection_ExtendedString & aVersion )

pure virtual

Implemented in CDF_FWOSDriver.

HasVersion()

virtual bool CDF_MetaDataDriver::HasVersion ( const TCollection_ExtendedString & aFolder, const TCollection_ExtendedString & aName )

virtual

by default return true.

HasVersionCapability()

virtual bool CDF_MetaDataDriver::HasVersionCapability ( )

virtual

returns true if the MetaDataDriver can manage different versions of a Data. By default, returns false.

LastVersion()

virtual occ::handle< CDM_MetaData > CDF_MetaDataDriver::LastVersion ( const occ::handle< CDM_MetaData > & aMetaData )

virtual

by default returns aMetaDATA should return the MetaData stored in the DBMS with the meta-data corresponding to the path. If the MetaDataDriver has version management capabilities the version has to be set in the returned MetaData. MetaData is called by GetMetaData If the version is not included in the path, MetaData should return the last version of the metadata is deferred;

MetaData() [1/2]

occ::handle< CDM_MetaData > CDF_MetaDataDriver::MetaData	(	const TCollection_ExtendedString &	aFolder,
		const TCollection_ExtendedString &	aName )

calls MetaData with an empty version

MetaData() [2/2]

virtual occ::handle< CDM_MetaData > CDF_MetaDataDriver::MetaData ( const TCollection_ExtendedString & aFolder, const TCollection_ExtendedString & aName, const TCollection_ExtendedString & aVersion )

pure virtual

should return the MetaData stored in the DBMS with the meta-data corresponding to the Data. If the MetaDataDriver has version management capabilities the version has to be set in the returned MetaData. aVersion may be NULL MetaData is called by GetMetaData If the version is set to NULL, MetaData should return the last version of the metadata

ReferenceIterator()

virtual occ::handle< PCDM_ReferenceIterator > CDF_MetaDataDriver::ReferenceIterator ( const occ::handle< Message_Messenger > & theMessageDriver )

virtual

SetName()

virtual TCollection_ExtendedString CDF_MetaDataDriver::SetName ( const occ::handle< CDM_Document > & aDocument, const TCollection_ExtendedString & aName )

virtual

this method is useful if the name of an object depends on the metadatadriver. For example a Driver based on the operating system can choose to add the extension of file to create to the object.

Reimplemented in CDF_FWOSDriver.

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

• CDF_MetaDataDriver.hxx