com.espertech.esper.epl.view.OutputCondition Maven / Gradle / Ivy
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Complex event processing and event series analysis component
/*
***************************************************************************************
* Copyright (C) 2006 EsperTech, Inc. All rights reserved. *
* http://www.espertech.com/esper *
* 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.epl.view;
/**
* A condition that must be satisfied before output processing
* is allowed to continue. Once the condition is satisfied, it
* makes a callback to continue output processing.
*/
public interface OutputCondition {
/**
* Update the output condition.
*
* @param newEventsCount - number of new events incoming
* @param oldEventsCount - number of old events incoming
*/
void updateOutputCondition(int newEventsCount, int oldEventsCount);
void terminated();
void stop();
}