/*
* *************************************************************************************
* 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.client.annotation;
/**
* Annotation for defining the name of the property or the function name returning the external data window key values.
*/
public @interface ExternalDWKey
{
/**
* Property name acting as key.
* @return key property name
*/
String property() default "";
/**
* Multiple property names acting as key (check for support in the documentation).
* @return property names array
*/
String[] propertyNames() default {};
/**
* Key generator function.
* @return function name
*/
String function() default "";
}