[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2308) Adjusting the Outer Join Predicate using Criteria Query

[Adam Ringel (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=33788#action_33788 ] 

Adam Ringel commented on HHH-2308:
----------------------------------

Are there any plans to implement the new createAlias method with the extraJoinClauses parameter in an official release?  This is a highly valuable addition to the Criteria API.

I have used the Filter work around but I find it rather clunky.  Plus I don't want to have a filter enabled in a session when it is possible that another query in that session could be invoked that doesn't want that filter!!  I tried doing a disable followed by a session flush but it didn't seem to work:
crit.list();
//doesn't work, have to live with filter being live in this session
session.flush();
session.disableFilter("ackFilter");

> Adjusting the Outer Join Predicate using Criteria Query
> -------------------------------------------------------
>
>                 Key: HHH-2308
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2308
>             Project: Hibernate Core
>          Issue Type: New Feature
>          Components: query-criteria
>    Affects Versions: 3.2.1
>         Environment: Linux Using MS SQLServer
>            Reporter: Ben Grant
>         Attachments: hibernate-3.3.2.GA-createAlias_withClause.patch, hibernate-3.3.2.GA-createAlias_withClause.zip, hibernate-joinOn-sorted.ZIP, hibernate-joinOn.ZIP
>
>
> I have two tables 
> Table A 
> ||Col_1||Col_2|| 
> |London| UK | 
> |Liverpool| UK | 
> | New York | USA | 
> Table B 
> ||Col_1||Col_2|| Col_3|| 
> | UK | Europe | 0 
> | USA | Americas | 1 
> Using the Criteria class, Restriction Class and FetchMode, Hibernate manages to create a query that looks like this 
> select distinct top 2000 
> this_.Col_1 as y0_, TableB3_.Col2 as y1_ 
> from TableA this_ 
> left outer join TableB TableB3_ on this_.Col_2= TableB3_.Col_1 
> where TableB3_.Col_3=1 
> When really i need the query to be like this 
> select distinct top 2000 
> this_.Col_1 as y0_, TableB3_.Col2 as y1_ 
> from TableA this_ 
> left outer join TableB TableB3_ on this_.Col_2= TableB3_.Col_1 AND TableB3_.Col_3=1 
> currently their isn't any know way for hibernate to adjust or apply filters within the join clause.

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