[Hibernate-issues] [Hibernate-JIRA] Created: (HB-608) Allow criteria queries on abstract classes from table-per-concrete-class mappings

[<leg...@at...>]

Message:

  A new issue has been created in JIRA.

---------------------------------------------------------------------
View the issue:

  http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-608


Here is an overview of the issue:
---------------------------------------------------------------------
        Key: HB-608
    Summary: Allow criteria queries on abstract classes from table-per-concrete-class mappings
       Type: Improvement

     Status: Unassigned
   Priority: Minor

    Project: Hibernate2
 Components: 
             core
   Versions:
             2.1.1

   Assignee: 
   Reporter: Shorn Tolley

    Created: Mon, 5 Jan 2004 11:09 PM
    Updated: Mon, 5 Jan 2004 11:09 PM
Environment: Hibernate 2.1.1, Ingres 2.6 SP2

Description:
I'm mapping a part of my domain model using the table-per-concrete-class strategy.  I need to use hibernate's "implicit polymorphism" feature to query on the abstract class in the hierarchy to return specific instances of the class regardless of their concrete type.

I can do it using the HQL query mechanism (as long as I fully qualify the name of the abstract class), but when I try to use the Criteria query mechanism I get a mapping exception with a "No persisten for: <Classname>" type message.

The relevant section in the 2.1.1 documentation is "Chapter 16 Inheritance mappings".

I posted my problem in a forum topic and am raising this issue as a result of instructions given by the hibernate team: http://forum.hibernate.org/viewtopic.php?t=926608

Even if you don't want to implement the functionality I'm talking about (or want to delay it's implementation for a while), it might be a good idea to update the table in the limitations section for the "polymorphic load()/get()" column that says "use a query" to note that you can't use a criteria query.

It also might be worth mentioning that you need to use the fully qualified classname of the abstract class in the HQL query.



---------------------------------------------------------------------
JIRA INFORMATION:
This message is automatically generated by JIRA.

If you think it was sent incorrectly contact one of the administrators:
   http://opensource.atlassian.com/projects/hibernate/secure/Administrators.jspa

If you want more information on JIRA, or have a bug to report see:
   http://www.atlassian.com/software/jira