@Target(value={METHOD,FIELD})
@Retention(value=RUNTIME)
public @interface GeneratedValue
GeneratedValue
annotation may be applied to a primary key property or
field of an entity or mapped superclass in conjunction with
the Id
annotation.
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;
Modifier and Type | Optional Element and Description |
---|---|
java.lang.String |
generator
(Optional) The name of the primary key generator
to use as specified in the
SequenceGenerator
or TableGenerator annotation. |
GenerationType |
strategy
(Optional) The primary key generation strategy
that the persistence provider must use to
generate the annotated entity primary key.
|
public abstract GenerationType strategy
public abstract java.lang.String generator
SequenceGenerator
or TableGenerator
annotation.
Defaults to the id generator supplied by persistence provider.