org.eclipse.persistence.sessions.coordination.MergeChangeSetCommand Maven / Gradle / Ivy
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/*
* Copyright (c) 1998, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.sessions.coordination;
import org.eclipse.persistence.internal.sessions.*;
/**
*
* Purpose: Provide a remote command implementation for remote cache
* merges of changes.
*
* Description: This command provides the implementation for cache
* synchronization using RCM.
*
* @author Steven Vo
* @since OracleAS TopLink 10g (9.0.4)
*
*/
public class MergeChangeSetCommand extends Command {
/** The changes to be applied remotely */
protected UnitOfWorkChangeSet changeSet;
/**
* INTERNAL:
* Return the changes to be applied
*/
public UnitOfWorkChangeSet getChangeSet(AbstractSession session) {
return changeSet;
}
/**
* INTERNAL:
* Set the changes to be applied
*/
public void setChangeSet(UnitOfWorkChangeSet newChangeSet) {
changeSet = newChangeSet;
}
/**
* 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.
*/
@Override
public void executeWithSession(AbstractSession session) {
MergeManager manager = new MergeManager(session);
manager.mergeIntoDistributedCache();
manager.setCascadePolicy(MergeManager.CASCADE_ALL_PARTS);
// Do the main merge
manager.mergeChangesFromChangeSet(getChangeSet(session));
}
}