/*
* *************************************************************************************
* 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.epl.enummethod.eval;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.agg.aggregator.AggregatorAvgBigDecimal;
import com.espertech.esper.epl.expression.ExprEvaluator;
import com.espertech.esper.epl.expression.ExprEvaluatorContext;
import java.math.MathContext;
import java.util.Collection;
public class EnumEvalAverageBigDecimalEvents extends EnumEvalBase implements EnumEval {
private final MathContext optionalMathContext;
public EnumEvalAverageBigDecimalEvents(ExprEvaluator innerExpression, int streamCountIncoming, MathContext optionalMathContext) {
super(innerExpression, streamCountIncoming);
this.optionalMathContext = optionalMathContext;
}
public Object evaluateEnumMethod(EventBean[] eventsLambda, Collection target, boolean isNewData, ExprEvaluatorContext context) {
AggregatorAvgBigDecimal agg = new AggregatorAvgBigDecimal(optionalMathContext);
Collection<EventBean> beans = (Collection<EventBean>) target;
for (EventBean next : beans) {
eventsLambda[streamNumLambda] = next;
Number num = (Number) innerExpression.evaluate(eventsLambda, isNewData, context);
if (num == null) {
continue;
}
agg.enter(num);
}
return agg.getValue();
}
}