Class MapClearOperation

java.lang.Object

org.datanucleus.flush.MapClearOperation

All Implemented Interfaces:

Operation, SCOOperation

public class MapClearOperation
extends Object
implements SCOOperation

Clear operation for a map where we have a backing store.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final int	fieldNumber
(package private) final DNStateManager	sm
(package private) final MapStore	store

Constructor Summary

Constructors

Constructor	Description
MapClearOperation(DNStateManager sm, int fieldNum)
MapClearOperation(DNStateManager sm, MapStore store)

Method Summary

Modifier and Type	Method	Description
AbstractMemberMetaData	getMemberMetaData()	Accessor for the metadata for the member that this operation is for.
DNStateManager	getStateManager()	Accessor for StateManager of the object that this operation is performed on.
Store	getStore()	Accessor for the backing store for this operation.
void	perform()	Perform the clear() operation on the specified backing store.
String	toString()

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

sm

final DNStateManager sm

fieldNumber

final int fieldNumber

store

final MapStore store

Constructor Details

MapClearOperation

public MapClearOperation(DNStateManager sm,
 MapStore store)

MapClearOperation

public MapClearOperation(DNStateManager sm,
 int fieldNum)

Method Details

getMemberMetaData

public AbstractMemberMetaData getMemberMetaData()

Description copied from interface: SCOOperation

Accessor for the metadata for the member that this operation is for.

Specified by:

getMemberMetaData in interface SCOOperation

Returns:

The member metadata

perform

public void perform()

Perform the clear() operation on the specified backing store.

Specified by:

perform in interface Operation

getStore

public Store getStore()

Description copied from interface: SCOOperation

Accessor for the backing store for this operation.

Specified by:

getStore in interface SCOOperation

Returns:

The backing store

getStateManager

public DNStateManager getStateManager()

Description copied from interface: Operation

Accessor for StateManager of the object that this operation is performed on.

Specified by:

getStateManager in interface Operation

Returns:

StateManager

toString

public String toString()

Overrides:

toString in class Object