[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2308) Adding predicates to the join condition using Criteria Query

[Chris Wilson (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=35584#action_35584 ] 

Chris Wilson commented on HHH-2308:
-----------------------------------

If you need this support in a stable release (3.3.2GA) you can use [our RitaCriteriaQuery class|http://rita.wfplogistics.org/trac/browser/rita/src/org/wfp/rita/db/RitaCriteriaQuery.java]:

{code}
Criteria rl = session.createCriteria(RequestLine.class);
RitaCriteriaQuery rcq = new RitaCriteriaQuery(rl, m_Facade);
...
Criteria mo = session.createCriteria(rl, "movementsIn",
    "mo", JoinFragment.INNER_JOIN);
rcq.setJoinRestriction(mo, Restrictions.eq("ownerCode",
    Movement.OwnerCode.O));
...
List<RequestLine.Id> ids = rcq.list();
{code}

You'll probably want to change the RitaCriteriaQuery constructor to take a Session and a SessionFactory instead of a DataFacade (which is our Session wrapper).

See [our RequestDao class|http://rita.wfplogistics.org/trac/browser/rita/src/org/wfp/rita/datafacade/RequestDao.java] for more details and sample code.

> Adding predicates to the join condition 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
>            Assignee: Steve Ebersole
>             Fix For: 3.5.0-Beta-3
>
>         Attachments: hibernate-3.3.2.GA-createAlias_withClause.patch, hibernate-3.3.2.GA-createAlias_withClause.zip, hibernate-joinOn-sorted.ZIP, hibernate-joinOn.ZIP, hibernate-outer-join-criteria-trunk.diff, hibernate-outer-join-criteria.diff
>
>
> 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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