Grouper Users - Open Discussion List

[Julien Gribonvald <>]

Hi Chris,

I found the problem of the error log, it's a problem of compatibility 
between hibernate 3.2.6 ant antlr. It's due to my grouper-api 
integration in uportal, but now it's solved and it's working really fine 
and with very good performance in production environment . More the 
cache is working well now ;-)  To solve the problem i added on 
grouper.hibernate.properties this line : 
hibernate.query.factory_class=org.hibernate.hql.classic.ClassicQueryTranslatorFactory

We make the choice of this integration because webservices was a real 
problem, we know that with this integration we could have lib 
compatibility problems but we avoid WS problems with higth number of 
interrogations. And the main point is that we have a gain in time 
response. After we have a special implementation of our groupStore that 
we could plug dynamically any branch of grouper's groups anywhere on 
uportal Groups, and we can make the change without to make modification 
on uportal Base, it's a simple mapping on a xml file.

Thanks
Julien



Le 06/09/2011 14:14, Chris Hyzer a écrit :
> Is there more of a stack in the logs, maybe the grouper error log?  All 
> information would be helpful.  Maybe you have some jars that conflict... 
> generally the grouper client is easier to integrate into other projects like 
> uportal since it is one jar with no dependencies, but maybe it is too late 
> for that :)
>
> Thanks,
> Chris
>
> -----Original Message-----
> From: 
>
>  
> [mailto:]
>  On Behalf Of Julien Gribonvald
> Sent: Monday, September 05, 2011 8:53 AM
> To: 
>
> Subject: [grouper-users] Grouper 1.6.3 - Problem on some request
>
> Hi,
>
> We have some problems in getting membership, here is the error that we get in 
> our logs :
>
> java.lang.ClassCastException: Problem in HibernateSession:
> HibernateSession: isNew: true, isReadonly: true, grouperTransactionType:
> READONLY_NEW,
> Exception in list: (class edu.internet2.middleware.grouper.Group),
> ByHqlStatic, query: 'select g from Group as g  where g.uuid in (:Q2C71BB40, 
> :Q2C71BB41, :Q2C71BB42)', cacheable: false, cacheRegion:
> edu.internet2.middleware.grouper.internal.dao.hib3.Hib3GroupDAO.FindByUuids,
> tx type: null, tx type: nullBind var[0]: 'Param (class
> java.lang.String): 'Q2C71BB40'->'a89fad9d-cc1a-4e05-a234-58d77350bf11',
> Bind var[1]: 'Param (class java.lang.String):
> 'Q2C71BB41'->'1ec76d3b-bf54-4c0b-8c18-ba75194c5da5'Bind var[2]: 'Param (class 
> java.lang.String):
> 'Q2C71BB42'->'5c6726dd-11f8-4c94-bc0d-42065c58d8a9',
>
>
> Do you know where this could could ?
>
> To explain our context we integrated our own group manager in uPortal (using 
> only grouper api) and this error occure when a portlet do a
> getUserRole() (JSR168) to get groups of a user, and the portlet do several 
> request for a user. This is not a big problem as the error is well 
> intercepted, but sometimes the user don't get all ressources that he must 
> get. Is it possible that too much request overload the grouper api in doing 
> request on database ? I already have a such problem
> (classCastException) with hibernate due to a such case.
>
> Thanks
>
> Julien

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