Package org.datanucleus.api.jpa.annotations

Annotation Type DatastoreId

@Target(TYPE)
@Retention(RUNTIME)
public @interface DatastoreId

Extension annotation allowing for use of datastore-identity with JPA.

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element	Description
String	column	Name of the column to use for datastore identity.
javax.persistence.Column[]	columns	Column definition(s) to use for the datastore identity surrogate.
javax.persistence.GenerationType	generationType	Strategy for generating values for the datastore identity.
String	generator	Name of the generator to use (if using generationType of TABLE or SEQUENCE).

Element Detail

generationType

javax.persistence.GenerationType generationType

Strategy for generating values for the datastore identity.

Returns:

The generation type

Default:

javax.persistence.GenerationType.AUTO

generator

String generator

Name of the generator to use (if using generationType of TABLE or SEQUENCE).

Returns:

The generator

Default:

""

column

String column

Name of the column to use for datastore identity.

Returns:

The column name

Default:

""

columns

javax.persistence.Column[] columns

Column definition(s) to use for the datastore identity surrogate. Only processes a single column, but annotations cant have a default of null.

Returns:

The surrogate column definition(s)

Default:

{}