/*
* *************************************************************************************
* 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.dot;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventType;
import com.espertech.esper.client.util.ExpressionReturnType;
import com.espertech.esper.epl.expression.ExprDotEval;
import com.espertech.esper.epl.expression.ExprDotEvalVisitor;
import com.espertech.esper.epl.expression.ExprEvaluatorContext;
public class ExprDotEvalUnpackBean implements ExprDotEval {
private final ExpressionReturnType returnType;
public ExprDotEvalUnpackBean(EventType lambdaType) {
returnType = ExpressionReturnType.singleValue(lambdaType.getUnderlyingType());
}
public Object evaluate(Object target, EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext) {
if (target == null) {
return null;
}
EventBean theEvent = (EventBean) target;
return theEvent.getUnderlying();
}
public ExpressionReturnType getTypeInfo() {
return returnType;
}
public void visit(ExprDotEvalVisitor visitor) {
visitor.visitUnderlyingEvent();
}
}