/*
***************************************************************************************
* 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.subquery;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.agg.service.AggregationService;
import com.espertech.esper.epl.expression.core.ExprEvaluator;
import com.espertech.esper.epl.expression.core.ExprEvaluatorContext;
import java.util.Collection;
public class SubselectAggregationPreprocessorUnfilteredGrouped extends SubselectAggregationPreprocessorBase {
public SubselectAggregationPreprocessorUnfilteredGrouped(AggregationService aggregationService, ExprEvaluator filterEval, ExprEvaluator[] groupKeys) {
super(aggregationService, filterEval, groupKeys);
}
public void evaluate(EventBean[] eventsPerStream, Collection<EventBean> matchingEvents, ExprEvaluatorContext exprEvaluatorContext) {
aggregationService.clearResults(exprEvaluatorContext);
if (matchingEvents == null) {
return;
}
EventBean[] events = new EventBean[eventsPerStream.length + 1];
System.arraycopy(eventsPerStream, 0, events, 1, eventsPerStream.length);
for (EventBean subselectEvent : matchingEvents) {
events[0] = subselectEvent;
Object groupKey = generateGroupKey(events, true, exprEvaluatorContext);
aggregationService.applyEnter(events, groupKey, exprEvaluatorContext);
}
}
}