Package jakarta.persistence
Annotation Interface GeneratedValue
Provides for the specification of generation strategies for the
values of primary keys.
The GeneratedValue
annotation
may be applied to a primary key property or field of an entity or
mapped superclass in conjunction with the Id
annotation.
The use of the GeneratedValue
annotation is only
required to be supported for simple primary keys. Use of the
GeneratedValue
annotation is not supported for derived
primary keys.
Example 1: @Id @GeneratedValue(strategy=SEQUENCE, generator="CUST_SEQ") @Column(name="CUST_ID") public Long getId() { return id; } Example 2: @Id @GeneratedValue(strategy=TABLE, generator="CUST_GEN") @Column(name="CUST_ID") Long id;
- Since:
- 1.0
- See Also:
-
Optional Element Summary
Modifier and TypeOptional ElementDescription(Optional) The name of the primary key generator to use as specified in theSequenceGenerator
orTableGenerator
annotation.(Optional) The primary key generation strategy that the persistence provider must use to generate the annotated entity primary key.
-
Element Details
-
strategy
GenerationType strategy(Optional) The primary key generation strategy that the persistence provider must use to generate the annotated entity primary key.- Default:
- AUTO
-
generator
String generator(Optional) The name of the primary key generator to use as specified in theSequenceGenerator
orTableGenerator
annotation.Defaults to the id generator supplied by persistence provider.
- Default:
- ""
-