Hi all,
Sorry if this is a FAQ. I can't seem to find it in the docs or googling.
I have the following scenario and just need to know which
OpenJPA-specific annotations to apply to my field. The scenario is a
field of type Map where the map key is an enum that I want to store as
@Enumerated(EnumType.STRING) and is not an attribute of the values in
the map using OpenJPA 1.2.x & JPA 1.0 (can't go to JPA 2.0 yet).
Assume all classes use a simple @Id field of type Long.
public enum Place { HOUSE, CAVE, LEAN_TO, BARE_SPOT; }
@Entity
public class WildThing {
/* NOTE: does **not** have a field of type Place! */
@Id
protected Long id;
protected String name;
}
@Entity
public class WhereTheWildThingsAre {
@Id
protected Long id;
// what annotation(s) do I put here?
@OneToMany(cascade =
{ CascadeType.MERGE, CascadeType.REFRESH, CascadeType.PERSIST })
protected Map<Place,WildThing> thingsByClassification
= new HashMap<Place,WildThing>;
}
Again, I want the key to be stored as the string representation of the
enum constant.
TIA,
Matthew
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