org.sca4j.spi.services.event.EventService Maven / Gradle / Ivy
/**
* SCA4J
* Copyright (c) 2009 - 2099 Service Symphony Ltd
*
* Licensed to you under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. A copy of the license
* is included in this distrubtion or you may obtain a copy at
*
* http://www.opensource.org/licenses/apache2.0.php
*
* Unless required by applicable law or agreed to in writing, software distributed
* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
* This project contains code licensed from the Apache Software Foundation under
* the Apache License, Version 2.0 and original code from project contributors.
*
*
* Original Codehaus Header
*
* Copyright (c) 2007 - 2008 fabric3 project contributors
*
* Licensed to you under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. A copy of the license
* is included in this distrubtion or you may obtain a copy at
*
* http://www.opensource.org/licenses/apache2.0.php
*
* Unless required by applicable law or agreed to in writing, software distributed
* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
* This project contains code licensed from the Apache Software Foundation under
* the Apache License, Version 2.0 and original code from project contributors.
*
* Original Apache Header
*
* Copyright (c) 2005 - 2006 The Apache Software Foundation
*
* Apache Tuscany is an effort undergoing incubation at The Apache Software
* Foundation (ASF), sponsored by the Apache Web Services PMC. Incubation is
* required of all newly accepted projects until a further review indicates that
* the infrastructure, communications, and decision making process have stabilized
* in a manner consistent with other successful ASF projects. While incubation
* status is not necessarily a reflection of the completeness or stability of the
* code, it does indicate that the project has yet to be fully endorsed by the ASF.
*
* This product includes software developed by
* The Apache Software Foundation (http://www.apache.org/).
*/
package org.sca4j.spi.services.event;
/**
* The runtime event service. {@link SCA4JEventListener}s subscribe with this service to receive notification of
* various runtime events.
*
* @version $Rev: 148 $ $Date: 2007-06-02 05:10:48 +0100 (Sat, 02 Jun 2007) $
*/
public interface EventService {
/**
* Publishes a runtime event. EventListeners subscribed to the event will be notified.
*
* @param event the event
*/
void publish(T event);
/**
* Subscribes the listener to receive notification when events of the specified type are published.
*
* @param type the event type to receive notifications for
* @param listener the listener to subscribe
*/
void subscribe(Class type, SCA4JEventListener listener);
/**
* Unsubscribes the listener from receiving notifications when events of the specified type are published.
*
* @param type the event type to unsibscribe from
* @param listener the listener to unsubscribe
*/
void unsubscribe(Class type, SCA4JEventListener listener);
}