/*
***************************************************************************************
* 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.enummethod.eval;
import com.espertech.esper.client.EventType;
import com.espertech.esper.epl.core.EngineImportService;
import com.espertech.esper.epl.core.StreamTypeService;
import com.espertech.esper.epl.enummethod.dot.EnumMethodEnum;
import com.espertech.esper.epl.enummethod.dot.ExprDotEvalEnumMethodBase;
import com.espertech.esper.epl.enummethod.dot.ExprDotEvalParam;
import com.espertech.esper.epl.enummethod.dot.ExprDotEvalParamLambda;
import com.espertech.esper.epl.expression.dot.ExprDotNodeUtility;
import com.espertech.esper.epl.rettype.EPTypeHelper;
import com.espertech.esper.event.EventAdapterService;
import com.espertech.esper.event.arr.ObjectArrayEventType;
import com.espertech.esper.util.JavaClassHelper;
import java.util.List;
public class ExprDotEvalMinMax extends ExprDotEvalEnumMethodBase {
public EventType[] getAddStreamTypes(String enumMethodUsedName, List<String> goesToNames, EventType inputEventType, Class collectionComponentType, List<ExprDotEvalParam> bodiesAndParameters, EventAdapterService eventAdapterService) {
return ExprDotNodeUtility.getSingleLambdaParamEventType(enumMethodUsedName, goesToNames, inputEventType, collectionComponentType, eventAdapterService);
}
public EnumEval getEnumEval(EngineImportService engineImportService, EventAdapterService eventAdapterService, StreamTypeService streamTypeService, int statementId, String enumMethodUsedName, List<ExprDotEvalParam> bodiesAndParameters, EventType inputEventType, Class collectionComponentType, int numStreamsIncoming, boolean disablePropertyExpressionEventCollCache) {
boolean max = this.getEnumMethodEnum() == EnumMethodEnum.MAX;
if (bodiesAndParameters.isEmpty()) {
Class returnType = JavaClassHelper.getBoxedType(collectionComponentType);
super.setTypeInfo(EPTypeHelper.singleValue(returnType));
return new EnumEvalMinMaxScalar(numStreamsIncoming, max);
}
ExprDotEvalParamLambda first = (ExprDotEvalParamLambda) bodiesAndParameters.get(0);
Class returnType = JavaClassHelper.getBoxedType(first.getBodyEvaluator().getType());
super.setTypeInfo(EPTypeHelper.singleValue(returnType));
if (inputEventType == null) {
return new EnumEvalMinMaxScalarLambda(first.getBodyEvaluator(), first.getStreamCountIncoming(), max,
(ObjectArrayEventType) first.getGoesToTypes()[0]);
}
return new EnumEvalMinMaxEvents(first.getBodyEvaluator(), first.getStreamCountIncoming(), max);
}
}