jpa - Querying map with hibernate, jpql -

jpa - Querying map with hibernate, jpql -

i wondering had next error while querying map hibernate jpql:

hibernate version 4.1.5

/** map */ @elementcollection(targetclass = credential.class) @enumerated(enumtype.string) private map<musician, emusicgroupcredential> members; test query 1 `1. select o grouping o bring together o.members fellow member key(member).address.country = :country; test query 2 2. select o grouping o bring together o.members fellow member key(member.address.country) = :country;

with both test i'm next on de-referenced error. first 1 saying cannot de-reference key attribut. sec saying cannot dereference scalar collection element: address.

i believe hibernate, jpql, jpa limitation, have other point of view on problem.

regards.

hibernate jpa map jpql