/*
* *************************************************************************************
* 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.core.context.stmt;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.agg.service.AggregationRowRemovedCallback;
import com.espertech.esper.epl.agg.service.AggregationService;
import com.espertech.esper.epl.expression.ExprEvaluatorContext;
import java.util.Collection;
public class AIRegistryAggregationSingle implements AIRegistryAggregation, AggregationService {
private AggregationService service;
public AIRegistryAggregationSingle() {
}
public void assignService(int serviceId, AggregationService aggregationService) {
service = aggregationService;
}
public void deassignService(int serviceId) {
service = null;
}
public int getInstanceCount() {
return service == null ? 0 : 1;
}
public void applyEnter(EventBean[] eventsPerStream, Object optionalGroupKeyPerRow, ExprEvaluatorContext exprEvaluatorContext) {
service.applyEnter(eventsPerStream, optionalGroupKeyPerRow, exprEvaluatorContext);
}
public void applyLeave(EventBean[] eventsPerStream, Object optionalGroupKeyPerRow, ExprEvaluatorContext exprEvaluatorContext) {
service.applyLeave(eventsPerStream, optionalGroupKeyPerRow, exprEvaluatorContext);
}
public void setCurrentAccess(Object groupKey, int agentInstanceId) {
service.setCurrentAccess(groupKey, agentInstanceId);
}
public void clearResults(ExprEvaluatorContext exprEvaluatorContext) {
service.clearResults(exprEvaluatorContext);
}
public Object getValue(int column, int agentInstanceId) {
return service.getValue(column, agentInstanceId);
}
public Collection<EventBean> getCollection(int column, ExprEvaluatorContext context) {
return service.getCollection(column, context);
}
public EventBean getEventBean(int column, ExprEvaluatorContext context) {
return service.getEventBean(column, context);
}
public void setRemovedCallback(AggregationRowRemovedCallback callback) {
// not applicable
}
}