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org.eclipse.persistence.sessions.coordination
Class MergeChangeSetCommand

java.lang.Object
org.eclipse.persistence.sessions.coordination.Command
org.eclipse.persistence.sessions.coordination.MergeChangeSetCommand

All Implemented Interfaces:

java.io.Serializable

public class MergeChangeSetCommand

extends Command

Purpose: Provide a remote command implementation for remote cache merges of changes.

Description: This command provides the implementation for cache synchronization using RCM.

Since:

OracleAS TopLink 10g (9.0.4)

Author:

Steven Vo

See Also:

Serialized Form

Field Summary

protected org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet	changeSet The changes to be applied remotely
protected byte[]	changeSetBytes

Fields inherited from class org.eclipse.persistence.sessions.coordination.Command

serviceId

Constructor Summary

MergeChangeSetCommand()

Method Summary

boolean	convertChangeSetToByteArray(org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Custom serialize this change set by converting it to a byte array.
void	executeWithSession(org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: This method will be invoked by the RCM only when the CommandProcessor is a TopLink session.
org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet	getChangeSet(org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Return the changes to be applied
void	setChangeSet(org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet newChangeSet) INTERNAL: Set the changes to be applied

Methods inherited from class org.eclipse.persistence.sessions.coordination.Command

getServiceId, isInternalCommand, setServiceId

Methods inherited from class java.lang.Object

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

Field Detail

changeSet

protected transient org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet changeSet

The changes to be applied remotely

changeSetBytes

protected byte[] changeSetBytes

Constructor Detail

MergeChangeSetCommand

public MergeChangeSetCommand()

Method Detail

getChangeSet

public org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet getChangeSet(org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: Return the changes to be applied

setChangeSet

public void setChangeSet(org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet newChangeSet)

INTERNAL: Set the changes to be applied

convertChangeSetToByteArray

public boolean convertChangeSetToByteArray(org.eclipse.persistence.internal.sessions.AbstractSession session)
                                    throws java.io.IOException

INTERNAL: Custom serialize this change set by converting it to a byte array.

Returns:

false if converted byte array is null. Otherwise, return true.

Throws:

java.io.IOException

executeWithSession

public void executeWithSession(org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: This method will be invoked by the RCM only when the CommandProcessor is a TopLink session. The session will be passed in for the command to use.

Specified by:

executeWithSession in class Command

Parameters:

session - The session that can be used to execute the command on.

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