Module org.datanucleus

Package org.datanucleus.flush

Class CollectionClearOperation

java.lang.Object

org.datanucleus.flush.CollectionClearOperation

All Implemented Interfaces:

Operation, SCOOperation

public class CollectionClearOperation
extends Object
implements SCOOperation

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

Constructor Summary

Constructors

Constructor	Description
CollectionClearOperation(DNStateManager sm, int fieldNum)
CollectionClearOperation(DNStateManager sm, CollectionStore 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 java.lang.Object

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

Constructor Detail

CollectionClearOperation

public CollectionClearOperation(DNStateManager sm,
                                CollectionStore store)

CollectionClearOperation

public CollectionClearOperation(DNStateManager sm,
                                int fieldNum)

Method Detail

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