/*
***************************************************************************************
* 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.factory;
import com.espertech.esper.epl.agg.access.*;
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 AggregationStateFactorySorted implements AggregationStateFactory {
protected final ExprAggMultiFunctionSortedMinMaxByNode expr;
protected final AggregationStateSortedSpec spec;
public AggregationStateFactorySorted(ExprAggMultiFunctionSortedMinMaxByNode expr, AggregationStateSortedSpec spec) {
this.expr = expr;
this.spec = spec;
}
public AggregationState createAccess(int agentInstanceId, boolean join, Object groupKey, AggregationServicePassThru passThru) {
if (join) {
if (spec.getOptionalFilter() != null) {
return new AggregationStateSortedJoinWFilter(spec);
}
return new AggregationStateSortedJoin(spec);
}
if (spec.getOptionalFilter() != null) {
return new AggregationStateSortedWFilter(spec);
}
return new AggregationStateSortedImpl(spec);
}
public ExprNode getAggregationExpression() {
return expr;
}
}