/*
***************************************************************************************
* 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.approx;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.agg.access.AggregationAgent;
import com.espertech.esper.epl.agg.access.AggregationState;
import com.espertech.esper.epl.expression.core.ExprEvaluator;
import com.espertech.esper.epl.expression.core.ExprEvaluatorContext;
public class CountMinSketchAggAgentAdd implements AggregationAgent {
protected final ExprEvaluator stringEvaluator;
public CountMinSketchAggAgentAdd(ExprEvaluator stringEvaluator) {
this.stringEvaluator = stringEvaluator;
}
public void applyEnter(EventBean[] eventsPerStream, ExprEvaluatorContext exprEvaluatorContext, AggregationState aggregationState) {
Object value = stringEvaluator.evaluate(eventsPerStream, true, exprEvaluatorContext);
CountMinSketchAggState state = (CountMinSketchAggState) aggregationState;
state.add(value);
}
public void applyLeave(EventBean[] eventsPerStream, ExprEvaluatorContext exprEvaluatorContext, AggregationState aggregationState) {
}
}