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Posted to dev@openjpa.apache.org by "Thibault Falque (JIRA)" <ji...@apache.org> on 2017/09/29 07:03:00 UTC
[jira] [Updated] (OPENJPA-2719) TABLE PER CLASS inheritance problem

     [ https://issues.apache.org/jira/browse/OPENJPA-2719?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thibault Falque updated OPENJPA-2719:
-------------------------------------
    Description: 
Hi,

During a class on JPA we have noticed a bug occurring when using the
"TABLE PER CLASS" inheritance strategy.

The test case involves three classes: Computer, Desktop and Gamer. Gamer
extends Desktop that extends Computer.

I have a desktop and a gamer computer in the database. For the JPQL
request "SELECT g FROM Gamer g" the system returns 2 computers but the
correct answer should be 1 (since Gamer is more specific than Destop).

The correct answer is provided for SINGLE_TABLE and JOINED strategies.

I attached the source code with the unit tests. It is a drive link
because I can't uploaded compressed files:
https://drive.google.com/open?id=0B7j65u7m8zmeY2pRY0JDZE55S1U

Thanks for your help.
Thibault.

  was:
Hi,
During a classroom we have noticed a bug when use the "TABLE PER CLASS" for inheritance strategy. 

I have create three classes: Computer, Desktop and Gamer. Gamer extends Desktop that extends Computer. 

I have a desktop and a gamer computer in the database. For the request "SELECT g FROM Gamer g" the system returns 2 computers but the correct answer should be 1. 


I attached the source code with the unit tests. It is a drive link because I can't uploaded compressed files: https://drive.google.com/open?id=0B7j65u7m8zmeY2pRY0JDZE55S1U 

Thanks for your help.
Thibault. 



> TABLE PER CLASS inheritance problem
> -----------------------------------
>
>                 Key: OPENJPA-2719
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2719
>             Project: OpenJPA
>          Issue Type: Bug
>            Reporter: Thibault Falque
>
> Hi,
> During a class on JPA we have noticed a bug occurring when using the
> "TABLE PER CLASS" inheritance strategy.
> The test case involves three classes: Computer, Desktop and Gamer. Gamer
> extends Desktop that extends Computer.
> I have a desktop and a gamer computer in the database. For the JPQL
> request "SELECT g FROM Gamer g" the system returns 2 computers but the
> correct answer should be 1 (since Gamer is more specific than Destop).
> The correct answer is provided for SINGLE_TABLE and JOINED strategies.
> I attached the source code with the unit tests. It is a drive link
> because I can't uploaded compressed files:
> https://drive.google.com/open?id=0B7j65u7m8zmeY2pRY0JDZE55S1U
> Thanks for your help.
> Thibault.



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