[hibernate-issues] [Hibernate-JIRA] Assigned: (HHH-4991) ManyToMany table not joined due to max_join_depth parameter, results to SQL exceptions

ManyToMany table not joined due to max_join_depth parameter, results to SQL exceptions -------------------------------------------------------------------------------------- Key: HHH-4991 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4991 Project: Hibernate Core Issue Type: Bug Components: query-criteria Affects Versions: 3.5.0-CR-2 Environment: Hibernate 3.5.0-CR-2, MacOS X, MySQL 5.1 Reporter: Sergii Novotarskyi Assignee: Gail Badner Attachments: Example.zip, hhh-4991-testcase.patch *max_join_depth* parameter prevents Hibernate from joining one end of ManyToMany relationship when using Criteria API, if the relationship is "far" enough from the root entity. {quote} Criteria c = session.createCriteria(SubEntity.class) .createAlias("entity", "e") // ManyToOne, inner join .createAlias("e.entity", "ee") // ManyToOne, inner join .createAlias("ee.sides", "s") // ManyToMany, inner join + left outer join .setProjection(Projections.count("id")) .add(Restrictions.ne("s.data", "abc")); {quote} When *max_join_depth* is set to *2* (default) the above example generates following SQL query {quote} select count(this_.sub_id) as y0_ from SubEntity this_ inner join SubMainEntity e1_ on this_.submain_id=e1_.submain_id inner join MainEntity ee2_ on e1_.main_id=ee2_.main_id inner join MainSide sides7_ on ee2_.main_id=sides7_.main_id where s3_.data<>? {quote} The query, naturally, throws the "Unknown column 's3_.data' in 'where clause'" exception. Expected query would be {quote} select count(this_.sub_id) as y0_ from SubEntity this_ inner join SubMainEntity e1_ on this_.submain_id=e1_.submain_id inner join MainEntity ee2_ on e1_.main_id=ee2_.main_id inner join MainSide sides7_ on ee2_.main_id=sides7_.main_id left outer join SideEntity s3_ on sides7_.side_id=s3_.side_id where s3_.data<>? {quote}