/*
***************************************************************************************
* 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.metric;
import com.espertech.esper.core.service.StatementResultListener;
import java.util.Set;
/**
* SPI for metrics activity.
*/
public interface MetricReportingServiceSPI extends MetricReportingService {
/**
* Add stmt result listener.
*
* @param listener to add
*/
public void addStatementResultListener(StatementResultListener listener);
/**
* Remove stmt result listener.
*
* @param listener to remove
*/
public void removeStatementResultListener(StatementResultListener listener);
/**
* Returns output hooks.
*
* @return hooks.
*/
public Set<StatementResultListener> getStatementOutputHooks();
}