[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2952) Support for referencing non-root entities in Criteria SQL expressions

[Sergey Pulyaev (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=32272#action_32272 ] 

Sergey Pulyaev commented on HHH-2952:
-------------------------------------

With these files you can add restrictions like

criteria.createAlias("group", "g");
criteria.add(RestrictionsExt.likeSQLAliased("{g}.name", groupName));
or 
criteria.add(RestrictionsExt.likeSQLAliased("{group}.name", groupName));

and projections like
ProjectionList projList = restrictions.projectionList();
projList.add(RestrictionsExt.sqlProjectionGroupedString("{g}.name","groupName"));

projList.add(RestrictionsExt.sqlProjectionGroupedString("{group}.name","groupName"));

I made it for SQL projections and restrictions, but i think it would be not too hard to add it for generic projection and restriction.



> Support for referencing non-root entities in Criteria SQL expressions
> ---------------------------------------------------------------------
>
>                 Key: HHH-2952
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2952
>             Project: Hibernate Core
>          Issue Type: Improvement
>          Components: query-criteria
>    Affects Versions: 3.2.2
>         Environment: Java 5, MySQL 5.0, Eclipse 3.2
>            Reporter: Jacob Gyllenstierna
>            Assignee: Diego Plentz
>         Attachments: RestrictionsExt.java, SQLAliasedCriterion.java, SQLAliasedProjection.java
>
>
> It would be very helpful to be able to reference non-root entities in Criteria SQL restrictions and projections using placeholders similar to {alias}. A very simple but uninteresting example:
> criteria.createAlias("group", "g");
> criteria.add(Restrictions.sqlRestriction("{g}.id=:groupId"));

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