/**************************************************************************************
* 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.soda;
/**
* Represents the "first" aggregation function.
*/
public class FirstProjectionExpression extends AccessProjectionExpressionBase
{
private static final long serialVersionUID = -4943040862553084545L;
/**
* Ctor.
*/
public FirstProjectionExpression() {
}
/**
* Ctor.
* @param expression to aggregate
*/
public FirstProjectionExpression(Expression expression)
{
super(expression);
}
@Override
public String getAggregationFunctionName() {
return "first";
}
}