/*
***************************************************************************************
* 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.dot;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventPropertyGetter;
import com.espertech.esper.epl.expression.core.ExprEvaluator;
import com.espertech.esper.epl.expression.core.ExprEvaluatorContext;
public class PropertyExprEvaluatorNonLambda implements ExprEvaluator {
private final int streamId;
private final EventPropertyGetter getter;
private final Class returnType;
public PropertyExprEvaluatorNonLambda(int streamId, EventPropertyGetter getter, Class returnType) {
this.streamId = streamId;
this.getter = getter;
this.returnType = returnType;
}
public Object evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) {
EventBean eventInQuestion = eventsPerStream[streamId];
if (eventInQuestion == null) {
return null;
}
return getter.get(eventInQuestion);
}
public Class getType() {
return returnType;
}
}