[hibernate-issues] [Hibernate-JIRA] Closed: (HHH-2397) hilo generator can generate negative numbers because of arithmetic overflow

[Steve Ebersole (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2397?page=all ]
     
Steve Ebersole closed HHH-2397:
-------------------------------

    Resolution: Fixed

trunk / 3.2

highly recommend the new enhanced generators moving forward...

> hilo generator can generate negative numbers because of arithmetic overflow
> ---------------------------------------------------------------------------
>
>          Key: HHH-2397
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2397
>      Project: Hibernate3
>         Type: Bug

>   Components: core
>     Reporter: Steve Ebersole
>     Assignee: Steve Ebersole
>      Fix For: 3.2.3

>
>
> org.hibernate.id.TableHiLoGenerator#generate can potentially generate negative numbers because of the possibility of overflow due to the handling of the "clock over" multiplication using int multiplication.  The solution is to force one of the operands to type long.

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