[hibernate-issues] [Hibernate-JIRA] Created: (HHH-4466) Discriminator column in the joined table

[Xavier Jodoin (JIRA)]

 Discriminator column in the joined table
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                 Key: HHH-4466
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4466
             Project: Hibernate Core
          Issue Type: Improvement
          Components: core
            Reporter: Xavier Jodoin
         Attachments: UsertypeExample.zip

When using the JOINED inheritance strategy and creating a link to the root Entity of the hierarchy, hibernate only puts the id in reference 
and thus when the entity is loaded lazily, hibernate joins all subclasses because it can't know which Entity is being referred to.
It would be useful to support having a discriminator column in the joined table to specify the instance class.
It is possible to emulate this feature with an usertype but some features like querying become harder to implement.

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