[hibernate-issues] [Hibernate-JIRA] Created: (HHH-2826) IS [NOT] NULL checks with component values

[Steve Ebersole (JIRA)]

IS [NOT] NULL checks with component values
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                 Key: HHH-2826
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2826
             Project: Hibernate3
          Issue Type: Improvement
          Components: query-hql
            Reporter: Steve Ebersole
            Assignee: Steve Ebersole
             Fix For: 3.2.6, 3.3


Currently the HQL translator attempts to render IS NULL and IS NOT NULL checks against a component using tuple syntax.  Would be much better to instead "explode" these.

For example, consider Person with a name property which is a component type of Name and the HQL:
"from Person p where p.name is null"

Currently, we'd end up with SQL like:
"... from person p where (p.f_name, p.l_name) is null"

but the exploded form would make much more sense here:
"... from person p where ( p.f_name is null and p.l_name is null )"

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