Trunk version of NH.Search produces Load (e.g. select .. where Id=X) for
each result fetched in Lucene, which is bug.
If you have possibility to rebuild NH.Search, just download NH.Search trunk
and apply this patch:
http://nhjira.koah.net/browse/NHSR-17
After that, NH.Search will fetch all results within single SQL statement
(e.g. select ... where ID in (X,Y,Z)).

Jozef


2009/4/2 orjan <[email protected]>

>
> I have a small problem with NHSearch where a simple fulltext search
> resulting in N+1 DB calls
>
>        public IList<Log> FulltextSearch(string queryString)
>        {
>            IFullTextSession s =
> NHibernate.Search.Search.CreateFullTextSession
> (NHibernateSession.Current);
>            ITransaction tx = s.BeginTransaction();
>
>            Analyzer analyzer = new SimpleAnalyzer();
>            var parser = new MultiFieldQueryParser(
>                new[] {"Message", "Exception"},
>                analyzer);
>            Query query = parser.Parse(queryString);
>
>
>            IQuery hibQuery = s.CreateFullTextQuery(query, typeof
> (Log));
>            IList<Log> logs = hibQuery.List<Log>();
>
>            tx.Commit();
>
>            return logs;
>        }
>
> Resulting in N queries like this one according to NHprofiler:
> SELECT log0_.Id           as Id0_0_,
>       log0_.UserName     as UserName0_0_,
>       log0_.Machine      as Machine0_0_,
>       log0_.IP           as IP0_0_,
>       log0_.Date         as Date0_0_,
>       log0_.Exception    as Exception0_0_,
>       log0_.Installation as Installa7_0_0_,
>       log0_.Logger       as Logger0_0_,
>       log0_.Level        as Level0_0_,
>       log0_.Thread       as Thread0_0_,
>       log0_.UrlReferrer  as UrlRefe11_0_0_,
>       log0_.Url          as Url0_0_,
>       log0_.Message      as Message0_0_
> FROM   Logs log0_
> WHERE  log0_.Id = 68 /* @p0 */
>
>
> >
>


-- 
Jozef

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