[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3586) SequenceHiLoGenerator generates values ahead of the actual sequence

[Robin Sander (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=35955#action_35955 ] 

Robin Sander commented on HHH-3586:
-----------------------------------

I'm pretty sure this is not a bug. The multiplication is needed to "reserve" a sequence of identifiers without
hitting the database for every one, imagine using this in a clustered environment or simply using the same
sequence for multiple types.


> SequenceHiLoGenerator generates values ahead of the actual sequence
> -------------------------------------------------------------------
>
>                 Key: HHH-3586
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3586
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.3.1
>         Environment: Hibernate 3.3.1, Oracle 10G
>            Reporter: Krasimir Chobantonov
>   Original Estimate: 1 hour
>  Remaining Estimate: 1 hour
>
> The code that needs to be change in on line 83 of the SequenceHiLoGenerator
> here is the line
> 			hi = hival * ( maxLo+1 );
> basically we should add (+) the maxLo +1 to the current sequence value represented bu the hival instead of using multiply (*)

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