[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-5021) HQL for one-to-one associations is not fully bi-directional

HQL for one-to-one associations is not fully bi-directional ----------------------------------------------------------- Key: HHH-5021 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5021 Project: Hibernate Core Issue Type: Bug Components: core, query-criteria, query-hql Affects Versions: 3.3.2 Reporter: Fol De Rol Let's assume we have two entities A and B mapped to each other with a bi-directional one-to-one association. Let A.b and B.a are appropriate linked attributes, and A owns the association. Let's try the following HQL queries: 1. from A where b is null 2. from B where a is null 3. from B where a.b is null Query 1 works correctly. Query 2 produces a wrong SQL expression. Query 3 works, though produces a redundant SQL query. My opinion is that query 2 should also be valid.