StatementStopService.java

/**************************************************************************************
 * Copyright (C) 2008 EsperTech, Inc. All rights reserved.                            *
 * http://esper.codehaus.org                                                          *
 * http://www.espertech.com                                                           *
 * ---------------------------------------------------------------------------------- *
 * The software in this package is published under the terms of the GPL license       *
 * a copy of which has been included with this distribution in the license.txt file.  *
 **************************************************************************************/
package com.espertech.esper.view;

/**
 * Provides statement resources with the means to register a callback and be informed when a statement stopped
 * and resources for the statement must be release.
 */
public interface StatementStopService
{
    /**
     * Add a callback to perform for a stop of a statement.
     * @param callback is the callback function
     */
    public void addSubscriber(StatementStopCallback callback);

    /**
     * Used by the engine to indicate a statement stopped, invoking any callbacks registered.
     */
    public void fireStatementStopped();
}