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Hibernate developmental JSR 317 (Java Persistence API 2.0) contracts. Used to allow incremental implementation of features on the way to full JPA 2.0 support.

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// $Id:$
// EJB3 Specification Copyright 2004-2009 Sun Microsystems, Inc.
package javax.persistence;

/**
 * The TupleElement interface defines an element that is returned in
 * a query result tuple.
 * @param  the type of the element
 */
public interface TupleElement {

    /**
     * Return the Java type of the tuple element.
     * @return the Java type of the tuple element
     */
    Class getJavaType();

    /**
     * Return the alias assigned to the tuple element or null,
     * if no alias has been assigned.
     * @return alias
     */
    String getAlias();
}