Hi! I have the following entities: LegalEntity (abstract), Person (inheriting LegalEntity), Company (inheriting LegalEntity). I also have OneToMany LegalEntity->Address (via addresses property) and both sides of relationship use LAZY FetchType. Address can be "deactivated" (isActive set to true or false).
I need to fetch LegalEntity with addresses collection filtered to contain only Address entities which have isActive=true. I also must use FetchGroup which references addresses from LegalEntity object. If I use query: - SELECT le FROM LegalEntity le LEFT JOIN FETCH le.addresses WHERE le.id=:id AND le.addresses.isActive=true I get correct LegalEntity (Company or Person) with all addresses (isActive true or false). If I use query: - SELECT le, a FROM LegalEntity le JOIN le.addresses a WHERE le.id=:id AND le.addresses.isActive=true I also get correct LegalEntity with all addresses (because query contains two joins with Address). If I use query: - SELECT le, a FROM LegalEntity le JOIN le.addresses a WHERE le.id=:id AND a.isActive=true I don't get any results because Person or Company are never used in executed query. I get following message: Cannot instantiate abstract class of type "entities.LegalEntity" with object id "4"; this may indicate that the inheritance discriminator for the class is not configured correctly. Is there a way to do this properly? Thanks in advance. -- View this message in context: http://openjpa.208410.n2.nabble.com/Abstract-class-Fetch-Join-tp5057450p5057450.html Sent from the OpenJPA Users mailing list archive at Nabble.com.
