@Target(value={TYPE,METHOD,FIELD}) @Retention(value=RUNTIME) public @interface SequenceGenerator
GeneratedValue
annotation. A sequence generator
may be specified on the entity class or on the primary key
field or property. The scope of the generator name is global
to the persistence unit (across all generator types).
Example: @SequenceGenerator(name="EMP_SEQ", allocationSize=25)
Modifier and Type | Required Element and Description |
---|---|
String |
name
(Required) A unique generator name that can be referenced
by one or more classes to be the generator for primary key
values.
|
Modifier and Type | Optional Element and Description |
---|---|
int |
allocationSize
(Optional) The amount to increment by when allocating
sequence numbers from the sequence.
|
int |
initialValue
(Optional) The value from which the sequence object
is to start generating.
|
String |
sequenceName
(Optional) The name of the database sequence object from
which to obtain primary key values.
|
public abstract String name
public abstract String sequenceName
Defaults to a provider-chosen value.
public abstract int initialValue
public abstract int allocationSize
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