/*
***************************************************************************************
* 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.agg.access;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.expression.core.ExprEvaluatorContext;
/**
* Implementation of access function for single-stream (not joins).
*/
public class AggregationStateSortedJoinWFilter extends AggregationStateSortedJoin {
public AggregationStateSortedJoinWFilter(AggregationStateSortedSpec spec) {
super(spec);
}
@Override
public void applyEnter(EventBean[] eventsPerStream, ExprEvaluatorContext exprEvaluatorContext) {
EventBean theEvent = eventsPerStream[spec.getStreamId()];
if (theEvent == null) {
return;
}
Boolean pass = (Boolean) spec.getOptionalFilter().evaluate(eventsPerStream, true, exprEvaluatorContext);
if (pass != null && pass) {
referenceAdd(theEvent, eventsPerStream, exprEvaluatorContext);
}
}
@Override
public void applyLeave(EventBean[] eventsPerStream, ExprEvaluatorContext exprEvaluatorContext) {
EventBean theEvent = eventsPerStream[spec.getStreamId()];
if (theEvent == null) {
return;
}
Boolean pass = (Boolean) spec.getOptionalFilter().evaluate(eventsPerStream, false, exprEvaluatorContext);
if (pass != null && pass) {
dereferenceRemove(theEvent, eventsPerStream, exprEvaluatorContext);
}
}
}