[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-4281) @ManyToMany appears to ALWAYS generate a left outer join SQL
Jari Juslin (JIRA)
noreply at atlassian.com
Tue Nov 15 03:59:20 EST 2011
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-4281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=44315#comment-44315 ]
Jari Juslin commented on HHH-4281:
----------------------------------
The worst thing is, because of the join, the children are always retrieved from DB, even when they are already in cache..
> @ManyToMany appears to ALWAYS generate a left outer join SQL
> ------------------------------------------------------------
>
> Key: HHH-4281
> URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4281
> Project: Hibernate Core
> Issue Type: Bug
> Components: annotations
> Reporter: Barry Davies
> Priority: Minor
> Attachments: files.zip
>
>
> A collection mapping created using the @ManyToMany JPA annotation appears to create a left outer join SQL regardless of whether the joinColumn or inverseJoinColumn are marked nullable or not. This might be in error. Emmanuel asked for a JIRA issue to be created, so here we are. I have attached some files that can recreate what I believe to be the issue.
> The forum topic where this was brought up is:
> http://forum.hibernate.org/viewtopic.php?t=977936
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