/*
***************************************************************************************
* 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.example.cycledetect;
import com.espertech.esper.epl.agg.access.AggregationState;
import com.espertech.esper.epl.expression.core.ExprEvaluator;
import com.espertech.esper.plugin.PlugInAggregationMultiFunctionStateContext;
import com.espertech.esper.plugin.PlugInAggregationMultiFunctionStateFactory;
public class CycleDetectorAggregationStateFactory implements PlugInAggregationMultiFunctionStateFactory {
private final ExprEvaluator fromEvaluator;
private final ExprEvaluator toEvaluator;
public CycleDetectorAggregationStateFactory(ExprEvaluator fromEvaluator, ExprEvaluator toEvaluator) {
this.fromEvaluator = fromEvaluator;
this.toEvaluator = toEvaluator;
}
public AggregationState makeAggregationState(PlugInAggregationMultiFunctionStateContext stateContext) {
return new CycleDetectorAggregationState(this);
}
public ExprEvaluator getFromEvaluator() {
return fromEvaluator;
}
public ExprEvaluator getToEvaluator() {
return toEvaluator;
}
}