| Object identifier for use with nondurable objects to guarantee uniqueness in the JVM (but not in datastore).
They can also be used as identifiers for classes that have no database extent, such as JPOXSQL result objects.
Refer to JDO 2 [5.4.4]. An Object id class must have the following :-
- Must be public
- Must have a public constructor, which may be the default (no-arg) constructor
- All fields must be public
- All fields must be of Serializable types.
version: $Revision: 1.4 $ |