http://www.avaje.org/persistence-api: Packaging parent for Avaje OSS projects.
  • Rob Bygrave 
/*
 * 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
}