| /* |
| * Copyright (c) 2008, 2018 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Linda DeMichiel - Java Persistence 2.1 |
| // Linda DeMichiel - Java Persistence 2.0 |
| |
| 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(); |
| } |