/*
* *************************************************************************************
* Copyright (C) 2008 EsperTech, Inc. All rights reserved. *
* http://esper.codehaus.org *
* 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.MethodResolutionService;
import com.espertech.esper.epl.core.StreamTypeService;
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.client.util.ExpressionReturnType;
import com.espertech.esper.epl.expression.ExprDotNodeUtility;
import com.espertech.esper.epl.expression.ExprEvaluator;
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 ExprDotEvalAggregate extends ExprDotEvalEnumMethodBase {
public EventType[] getAddStreamTypes(String enumMethodUsedName, List<String> goesToNames, EventType inputEventType, Class collectionComponentType, List<ExprDotEvalParam> bodiesAndParameters) {
EventType evalEventType;
if (inputEventType == null) {
evalEventType = ExprDotNodeUtility.makeTransientOAType(enumMethodUsedName, goesToNames.get(1), collectionComponentType);
}
else {
evalEventType = inputEventType;
}
Class initializationType = bodiesAndParameters.get(0).getBodyEvaluator().getType();
EventType typeResult = ExprDotNodeUtility.makeTransientOAType(enumMethodUsedName, goesToNames.get(0), initializationType);
return new EventType[] {typeResult, evalEventType};
}
public EnumEval getEnumEval(MethodResolutionService methodResolutionService, EventAdapterService eventAdapterService, StreamTypeService streamTypeService, String statementId, String enumMethodUsedName, List<ExprDotEvalParam> bodiesAndParameters, EventType inputEventType, Class collectionComponentType, int numStreamsIncoming, boolean disablePropertyExpressionEventCollCache) {
ExprDotEvalParam initValueParam = bodiesAndParameters.get(0);
ExprEvaluator initValueEval = initValueParam.getBodyEvaluator();
super.setTypeInfo(ExpressionReturnType.singleValue(JavaClassHelper.getBoxedType(initValueEval.getType())));
ExprDotEvalParamLambda resultAndAdd = (ExprDotEvalParamLambda) bodiesAndParameters.get(1);
if (inputEventType != null) {
return new EnumEvalAggregateEvents(initValueEval,
resultAndAdd.getBodyEvaluator(), resultAndAdd.getStreamCountIncoming(),
(ObjectArrayEventType) resultAndAdd.getGoesToTypes()[0]);
}
else {
return new EnumEvalAggregateScalar(initValueEval,
resultAndAdd.getBodyEvaluator(), resultAndAdd.getStreamCountIncoming(),
(ObjectArrayEventType) resultAndAdd.getGoesToTypes()[0],
(ObjectArrayEventType) resultAndAdd.getGoesToTypes()[1]);
}
}
}