Whenever you do a LIKE you need to check your indexes in your DB to tune the 
query to be fast.

Thanks
-Vincent

On 18 Sep 2014 at 11:00:36, Thomas Mortagne 
([email protected](mailto:[email protected])) wrote:

> It's a new implementation with a lot of caching but the model did not changed.
> 
> On Thu, Sep 18, 2014 at 10:47 AM, Paul Libbrecht wrote:
> >
> > Dear XWiki developers,
> >
> > again and again I see code in our Curriki (quite some of which has been 
> > written by XWiki experts) that employ LIKE hql queries to evaluate if an 
> > XWikiRights object applied to a give group or user.
> >
> > I has happened often that some such queries kill our production application 
> > server; in the meantime we've managed to remove them. However, there are 
> > many more and it really appears inefficient to me.
> >
> > Is the "new xwiki rights model" that has been talked about here and there 
> > an enhancement in this respect?
> > (it is in XWiki 6 or so if I remember well, we are still at 3.5).
> > Simply splitting the addresses of the xwikirights object in the DB could 
> > leverage effectively an index which these LIKE queries fail to do.
> >
> > thanks in advance.
> >
> > Paul
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