/*
 * Copyright (c) 2008, 2009, 2011 Oracle, Inc. 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.
 */
package javax.persistence;

Defines the types of primary key generation strategies.
See Also:
  • GeneratedValue
Since:Java Persistence 1.0
/** * 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 a database sequence.
/** * 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.
/** * 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 AUTO 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.
/** * 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 }