/*
* Copyright (c) 2008, 2009 Sun Microsystems. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Linda DeMichiel - Java Persistence 2.0 - Version 2.0 (October 1, 2009)
* Specification available from http://jcp.org/en/jsr/detail?id=317
*/
// $Id: $
package javax.persistence;
/**
* The <code>TupleElement</code> interface defines an element that is returned in
* a query result tuple.
*
* @param <X> the type of the element
* @see Tuple
* @since Java Persistence 2.0
*/
public interface TupleElement<X> {
/**
* Return the Java type of the tuple element.
*
* @return the Java type of the tuple element
*/
Class<? extends X> getJavaType();
/**
* Return the alias assigned to the tuple element or null,
* if no alias has been assigned.
*
* @return alias
*/
String getAlias();
}