Interface StorageManager

public void beginWS(WorkingSet ws)

Informes the Storage manager of the begining of a working set

Parameters:

ws - the working set which starts

public void endWS(WorkingSet ws)

Informes the Storage manager of the end of a working set

Parameters:

ws - the working set which finishes

public Object export(ConnectionHolder context,
                     Object obj)
            throws PersistenceException

Makes persitent an object.

Parameters:

context - permits to access to the data support.

obj - is the exported persistent object

Returns:

the identifier of the persistent object.

Throws:

PersistenceException -

public Object export(ConnectionHolder context,
                     Object obj,
                     Object hints)
            throws PersistenceException

Makes persitent an object.

Parameters:

context - permits to access to the data support.

obj - is the exported persistent object

hints - helps to define the name of the persistent object.

Returns:

the identifier of the persistent object.

Throws:

PersistenceException -

public void read(ConnectionHolder context,
                 Object oid,
                 State state)
            throws PersistenceException

Reads data of a persistent from the support object and puts them into an instance.

Parameters:

context - permits to access to the data support.

oid - is the identifier of the persistent object

state - is an instance of a persistent object which must be filled by the data read from the support

public void read(WorkingSet context,
                 Object oid,
                 State state)
            throws PersistenceException

Reads data of a persistent from the support object and puts them into an instance.

Parameters:

context - permits to access to the data support and to manage a prefetching context.

oid - is the identifier of the persistent object

state - is an instance of a persistent object which must be filled by the data read from the support

public void unexport(ConnectionHolder context,
                     Object oid)
            throws PersistenceException

Destroyes a persistent object

Parameters:

context - permits to access to the data support.

oid - is the object identifier of the removed persistent object.

Throws:

PersistenceException -

public void unexport(ConnectionHolder context,
                     Object oid,
                     Object hints)
            throws PersistenceException

Destroyes a persistent object

Parameters:

context - permits to access to the data support.

oid - is the object identifier of the removed persistent object.

hints - helps to remove the persistent object.

Throws:

PersistenceException -

public void write(ConnectionHolder context,
                  Object oid,
                  State state)
            throws PersistenceException

Reads data of a persistent from the support object and puts them into an instance.

Parameters:

context - permits to access to the data support.

oid - is the identifier of the persistent object

state - the the persistent object instance which contains the data which must be written in the support