[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-1123) Cannot put more than 1000 elements in a InExpression

[Christian Gruber (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1123?page=comments#action_25774 ] 

Christian Gruber commented on HHH-1123:
---------------------------------------

Just for the sake of completeness: This bug does not only affect the Criteria API, but also HQL. I'm not sure whether the proposed patch can also fix that.

> Cannot put more than 1000 elements in a InExpression
> ----------------------------------------------------
>
>          Key: HHH-1123
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1123
>      Project: Hibernate3
>         Type: Bug

>   Components: core
>     Versions: 3.1 rc2, 3.2.0.alpha1
>  Environment: Oracle 9i
>     Reporter: Alexis Seigneurin
>  Attachments: patch.txt
>
> Original Estimate: 1 hour
>         Remaining: 1 hour
>
> The number of elements that we can put in a "in" expression is limited to a certain amount (1000 for Oracle, for instance). When creating a criteria query, the org.hibernate.criterion.InExpression class should split the expression into several smaller ones.
> Attached is a patch which splits the expression by slices of 500 elements. For example, if we have 1001 elements to put in the "in" expression, the result would be :
> (entity.field in (?, ?, ?...) or entity.field in (?, ?, ?...) or entity.field in (?))
> The surrounding parantheses are useful to avoid problems with other conditions (a "and" condition taking over the one of the "or" conditions).

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