/*
* 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: GenerationType.java 20957 2011-06-13 09:58:51Z stliu $
package javax.persistence;
/**
* Defines the types of primary key generation strategies.
*
* @see GeneratedValue
*
* @since Java Persistence 1.0
*/
public enum GenerationType {
/**
* Indicates that the persistence provider must assign
* primary keys for the entity using an underlying
* database table to ensure uniqueness.
*/
TABLE,
/**
* Indicates that the persistence provider must assign
* primary keys for the entity using a database sequence.
*/
SEQUENCE,
/**
* Indicates that the persistence provider must assign
* primary keys for the entity using a database identity column.
*/
IDENTITY,
/**
* Indicates that the persistence provider should pick an
* appropriate strategy for the particular database. The
* <code>AUTO</code> generation strategy may expect a database
* resource to exist, or it may attempt to create one. A vendor
* may provide documentation on how to create such resources
* in the event that it does not support schema generation
* or cannot create the schema resource at runtime.
*/
AUTO
}