[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-1725) lazy properties, events and collection xxx was not processed by flush exception and EJB3 incompatibility

[Geoffrey De Smet (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_29397 ] 

Geoffrey De Smet commented on HHH-1725:
---------------------------------------

Adrian: Emmanuel is a hibernate developer and he commented why.
There's a heavy discussion going on at HHH-2763 and I hope that when that's fixed, my flush problems go away magically too (hey, I can hope, can't I?:)

> lazy properties, events and collection xxx was not processed by flush exception and EJB3 incompatibility
> --------------------------------------------------------------------------------------------------------
>
>                 Key: HHH-1725
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1725
>             Project: Hibernate3
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.2.0.cr2
>            Reporter: Tomasz Bech
>
> It is realted to anomaly: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1540
> 'When using custom event listeners, sometimes you mess with (and initialize) lazy collections by mistake, which causes CollectionEntry.postFlush(PersistentCollection) to throw an AssertionFailure'
> It is questionable why AT ALL exception is raised in this case!
> What is the most important: EJB3 spec is not prohibiting to check/read/ object involved in the event, so current implementation is agains EJB3 spec.
> Events are often used for validation so it is quite probable that the lazy property (collection) has to be accessed - and when it is lazy and not initialized before the exception is raised. Why hibernate cannot treat it in nicer way and allow such actions. 
> One workaround is to not-use-lazy (very bad).
> Second workaround: in the code outside flush (not in event) pre-initialize all lazy properties (in fact simulation of 'not-lazy).

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira