[Hibernate-issues] [Hibernate-JIRA] Assigned: (HB-151) Traversing several joined-subclasses in where clause leaves out inner joins

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

Message:

   The following issue has been re-assigned.

   Assignee: Gavin King (mailto:ga...@in...)
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View the issue:

  http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-151


Here is an overview of the issue:
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        Key: HB-151
    Summary: Traversing several joined-subclasses in where clause leaves out inner joins
       Type: Bug

     Status: Assigned
   Priority: Critical

    Project: Hibernate2
 Components: 
             core
   Versions:
             2.0.1

   Assignee: Gavin King
   Reporter: Christian Bauer

    Created: Tue, 8 Jul 2003 3:32 PM
    Updated: Tue, 8 Jul 2003 6:57 PM
Environment: WSAD 5.0.1, JDK 1.3.1, Oracle 9i, Windows 2000

Description:
Class-diagram:
 a-->b  a inherits from b
 a==b   a has relationship to b
 
 (Sorry, classnames are in Dutch)
 
 Persoon == Beroepsuitoefening
 Beroepsuitoefening <-- Jurist
 Jurist == Bevoegdheid
 Bevoegdheid <-- Beediging <-- Procureurschap
 
 If my query contains 'where jurist.persoon.naam like ?', the generated SQL looks like this
(which is OK):
 
 select count(*) as x0_0_ 
 from jurist persiste0_ 
 	inner join beroepsuitoefening persiste0__1 on persiste0_.beg_id=persiste0__1.id, 
 persoon persiste1_ 
 where (
 	(
 		persiste1_.naam like ?  
 		and persiste0__1.psn_id=persiste1_.id
 	)
 )
 
 
 However, if I start one level deeper in the hierarchy ('where
procureurschap.jurist.persoon.naam like ?') the SQL query looks like this:
 
 select count(*) as x0_0_ 
 from procureurschap persiste0_ 
 	inner join beediging persiste0__1 on persiste0_.bvh_id=persiste0__1.bvh_id 
 	inner join bevoegdheid persiste0__2 on persiste0_.bvh_id=persiste0__2.id, 
 jurist persiste1_, 
 persoon persiste2_ 
 
 where (
 	(
 		persiste2_.naam=?  
 		and persiste0__2.beg_id=persiste1_.beg_id 
 		and persiste1__1.psn_id=persiste2_.id
 	)
 )
 
 [Queries are indented to show outline]
 
 As you can see, the last clause references persiste1__1, which isn't listed in the from
clause. It's intended to, because the pattern matches with the previous example (_1 begin
the first innerjoin for persiste1_). It should be an alias for beroepsuitoefening just as it
is in the previous example.


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