JPA Enum

GenerationType

java.lang.Object
  ∟ java.lang.Enum<jakarta.persistence.GenerationType>
    ∟ jakarta.persistence.GenerationType
Enumerates the defined primary key generation strategies.
See Also:
GeneratedValue
Since:
JPA 1.0
The Auto Generated Values article explains how to use GenerationType.

Enum Constants

AUTO
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.

Since:
JPA 1.0
IDENTITY
Indicates that the persistence provider must assign primary keys for the entity using a database identity column.

May be used to generate primary keys of type Long, Integer, long, or int.

Since:
JPA 1.0
SEQUENCE
Indicates that the persistence provider must assign primary keys for the entity using a database sequence.

May be used to generate primary keys of type Long, Integer, long, or int.

Since:
JPA 1.0
TABLE
Indicates that the persistence provider must assign primary keys for the entity using an underlying database table to ensure uniqueness.

May be used to generate primary keys of type Long, Integer, long, or int.

Since:
JPA 1.0
UUID
Indicates that the persistence provider must assign primary keys for the entity by generating an RFC 4122 Universally Unique IDentifier.

May be used to generate primary keys of type java.util.UUID or String.

Since:
JPA 1.0

Public Static Enum Methods:

Method inherited from class java.lang.Enum

compareTo, compareTo, describeConstable, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Method inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait