/*
***************************************************************************************
* 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.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 java.util.List;
import java.util.Map;
public class ExprDotEvalGroupBy 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) {
super.setTypeInfo(EPTypeHelper.singleValue(Map.class));
ExprDotEvalParamLambda first = (ExprDotEvalParamLambda) bodiesAndParameters.get(0);
if (bodiesAndParameters.size() == 2) {
ExprDotEvalParamLambda second = (ExprDotEvalParamLambda) bodiesAndParameters.get(1);
if (inputEventType == null) {
return new EnumEvalGroupByKeyValueSelectorScalarLambda(first.getBodyEvaluator(), first.getStreamCountIncoming(), second.getBodyEvaluator(),
(ObjectArrayEventType) first.getGoesToTypes()[0]);
}
return new EnumEvalGroupByKeyValueSelectorEvents(first.getBodyEvaluator(), first.getStreamCountIncoming(), second.getBodyEvaluator());
}
if (inputEventType == null) {
return new EnumEvalGroupByKeySelectorScalarLambda(first.getBodyEvaluator(), first.getStreamCountIncoming(),
(ObjectArrayEventType) first.getGoesToTypes()[0]);
}
return new EnumEvalGroupByKeySelectorEvents(first.getBodyEvaluator(), first.getStreamCountIncoming());
}
}