[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5630) Query cache key generated for HQL with a "joined" association is the same as when the association is "fetched", even though cached data is different

[Gail Badner (JIRA)]

Query cache key generated for HQL with a "joined" association is the same as when the association is "fetched", even though cached data is different
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                 Key: HHH-5630
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5630
             Project: Hibernate Core
          Issue Type: Bug
          Components: query-hql
    Affects Versions: 3.6.0.CR2
            Reporter: Gail Badner
            Assignee: Gail Badner
             Fix For: 3.6.x


The same SQL is generated for the following HQL statements:

1) select a from Animal a left join fetch a.offspring
2) select a, o from Animal a left join a.offspring o

The QueryKey objects generated for these statements are equivalent, even though the cached data is different.

Results from 1) will be a list of Animal objects.
Results from 2) will be a list of Object[2]

This can cause type mismatches when retrieving results frome the cache.

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