javax.jdo.annotations
Annotation Type PrimaryKey

@Target(value={TYPE,FIELD,METHOD})
@Retention(value=RUNTIME)
public @interface PrimaryKey

Annotation on a member to define it as a primary key member of a class or persistent interface using application identity. Also used to define the primary key columns of a secondary table. Corresponds to the xml element "primary-key".

Since:

2.1

Version:

2.1

Optional Element Summary

java.lang.String	column Name of the column to use for the primary key
Column[]	columns The column(s) for the primary key
java.lang.String	name Name of the primary key constraint

name

public abstract java.lang.String name

Name of the primary key constraint

Returns:

the name of the primary key constraint

Default:

""

column

public abstract java.lang.String column

Name of the column to use for the primary key

Returns:

the name of the column to use for the primary key

Default:

""

columns

public abstract Column[] columns

The column(s) for the primary key

Returns:

the column(s) for the primary key

Default:

{}