[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2308) Adjusting the Outer Join Predicate using Criteria Query
Theo Platt (JIRA)
noreply at atlassian.com
Thu Jun 7 11:18:04 EDT 2007
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_27168 ]
Theo Platt commented on HHH-2308:
---------------------------------
Actually (for my purposes at least) there is a work around - and that's to use hibernate filters.
If you enable a filter on a collection it will add it as an outer join predicate.
Still - it might be neater to just add it to the criteria api rather than using filters - might get messy if you have more than one term to filter by ?
Theo
> Adjusting the Outer Join Predicate using Criteria Query
> -------------------------------------------------------
>
> Key: HHH-2308
> URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2308
> Project: Hibernate3
> Issue Type: New Feature
> Components: query-criteria
> Affects Versions: 3.2.1
> Environment: Linux Using MS SQLServer
> Reporter: Ben Grant
>
> 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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