org.apache.openjpa.event.RemoteCommitProvider Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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* specific language governing permissions and limitations
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*/
package org.apache.openjpa.event;
import org.apache.openjpa.lib.util.Closeable;
/**
* An entity that is responsible for communicating commit
* notification to other {@link RemoteCommitEventManager}s. Each
* event manager creates a remote commit provider, based on
* the values of the openjpa.RemoteCommitProvider
* configuration property.
* An adapter that implements {@link TransactionListener} is
* registered with each {@link org.apache.openjpa.kernel.Broker}. This adapter
* invokes broadcast, which is responsible for
* notifying other remote commit provider objects of the commit changes.
* Upon receiving a notification from a different remote commit provider,
* a provider must notify all local remote commit listeners via the
* {@link RemoteCommitEventManager#fireEvent} method.
* A remote commit provider must not fire remote events for
* commits that originated with a local broker.
*
* @author Patrick Linskey
* @since 0.2.5.0
*/
public interface RemoteCommitProvider
extends Closeable {
/**
* Set the "owning" remote event manager to notify when remote events
* are received from remote sources.
*/
public void setRemoteCommitEventManager(RemoteCommitEventManager mgr);
/**
* Notifies other remote event managers in this JVM and on other machines
* of changes to the cache. This method must not notify the
* event manager associated with the broker that originated this commit.
*/
public void broadcast(RemoteCommitEvent event);
/**
* Free the resources used by this provider.
*/
public void close();
}