com.espertech.esper.epl.agg.factory.AggregationStateFactoryMinMaxByEver Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of esper Show documentation

Complex event processing and event series analysis component

There is a newer version: 7.1.0

/*
 * *************************************************************************************
 *  Copyright (C) 2006-2015 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.factory;

import com.espertech.esper.epl.agg.access.AggregationServicePassThru;
import com.espertech.esper.epl.agg.access.AggregationState;
import com.espertech.esper.epl.agg.access.AggregationStateMinMaxByEver;
import com.espertech.esper.epl.agg.access.AggregationStateMinMaxByEverSpec;
import com.espertech.esper.epl.agg.service.AggregationStateFactory;
import com.espertech.esper.epl.expression.accessagg.ExprAggMultiFunctionSortedMinMaxByNode;
import com.espertech.esper.epl.expression.core.ExprNode;

public class AggregationStateFactoryMinMaxByEver implements AggregationStateFactory {

    protected final ExprAggMultiFunctionSortedMinMaxByNode expr;
    protected final AggregationStateMinMaxByEverSpec spec;

    public AggregationStateFactoryMinMaxByEver(ExprAggMultiFunctionSortedMinMaxByNode expr, AggregationStateMinMaxByEverSpec spec) {
        this.expr = expr;
        this.spec = spec;
    }

    public AggregationState createAccess(int agentInstanceId, boolean join, Object groupKey, AggregationServicePassThru passThru) {
        return new AggregationStateMinMaxByEver(spec);
    }

    public ExprNode getAggregationExpression() {
        return expr;
    }
}