Craig, The latest public draft (3/13/2009) of the JPA 2.0 specification defines the ability to apply the Enumeration (also Temporal and Lob) annotation to element collection. Support within OpenJPA trunk will follow in the weeks to come.
-Jeremy On Tue, Mar 31, 2009 at 12:04 PM, Craig L Russell <craig.russ...@sun.com>wrote: > I'd like to see a simple way to persist an EnumSet (which if I understand > this use case is really what is desired): > > @Enumerated(STRING) > @ElementCollection > private EnumSet<MyEnum> myEnums = new EnumSet<MyEnum>(); > > If no volunteers to implement this one (too bad it's not in the > specification) then this would be my second choice: > > @Enumerated(STRING) > @ElementCollection > private Set<MyEnum> myEnums = new HashSet<MyEnum>(); > > The @Enumerated tells us that you want the String value of the enum to be > persisted (not the int value); the @ElementCollection tells us to persist > the values individually and not as a serialized blob. > > Craig > > > On Mar 31, 2009, at 8:46 AM, Jody Grassel wrote: > > It sounds like you're trying to persist a collection of enumerations as a >> set of data and not as a reference to other entities, is that correct? >> >> If so, wouldn't a combination of @PersistentCollection and Externalization >> (section 6.6 in the manual) provide the function you are looking for? >> >> >> On Wed, Mar 25, 2009 at 11:48 AM, Tedman Leung <ted...@sfu.ca> wrote: >> >> Anyone know how to store a collection of enums as Strings instead of >>> their >>> ordinal values? (preferably with annotations...) >>> >>> i.e. >>> @ManyToMany >>> private Set<MyEnum> myEnums=new HashSet<MyEnum>(); >>> >>> >>> -- >>> Ted Leung >>> ted...@sfu.ca >>> >>> It's time for a new bike when the bulb in your shift light burns out. >>> >>> > Craig L Russell > Architect, Sun Java Enterprise System http://db.apache.org/jdo > 408 276-5638 mailto:craig.russ...@sun.com > P.S. A good JDO? O, Gasp! > >
