/*
***************************************************************************************
* 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.ExprEvaluatorContext;
import com.espertech.esper.epl.expression.dot.ExprDotEval;
import com.espertech.esper.epl.expression.dot.ExprDotEvalVisitor;
import com.espertech.esper.epl.rettype.EPType;
public class ExprDotEvalProperty implements ExprDotEval {
private final EventPropertyGetter getter;
private final EPType returnType;
public ExprDotEvalProperty(EventPropertyGetter getter, EPType returnType) {
this.getter = getter;
this.returnType = returnType;
}
public Object evaluate(Object target, EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext) {
if (!(target instanceof EventBean)) {
return null;
}
return getter.get((EventBean) target);
}
public EPType getTypeInfo() {
return returnType;
}
public void visit(ExprDotEvalVisitor visitor) {
visitor.visitPropertySource();
}
}