Ok. I understand, but not sure how to proceed.

I have a User class, Record class and UserRecord class.

Should there be a property on the User class called UserRecords then
that would have a property on it called Record and get back to the
data in reverse?
Any help would be greatly appreciated.

Just trying to get use to it after being so use to querying sql.

Cheers.
Adam


On Nov 29, 10:52 pm, Fabio Maulo <[email protected]> wrote:
> classes, domain objects, entities... No Table please.
> You can query it without use the "with" clause.
>
> Think on your domain at first, not in its persistent representation.
>
> 2009/11/28 Schotime <[email protected]>
>
>
>
> > hey,
>
> > i have two tables. one called records and one called userrecords.
> > records has the relationship that a record contains multiple
> > userrecords.
>
> > table records:
> >  recordid int identity,
> >  details varchar
>
> > table userrecords
> >  userrecordid int identity,
> >  recordid int,
> >  userid int,
> >  extradetails varchar
>
> > Will explain with an example.
> > if there are 10 records and 10 users then you can expect to see 100
> > user records. One for each combination. A unique index exists on the
> > userrecords table constraining this.
>
> > So if you were to right the query in sql it would be..assuming you are
> > after the records and user records for user 2.
>
> > select * from records r
> >   left outer join userrecords ur on r.recordid = ur.recordid and
> > ur.userid = 2
>
> > this will join the tables correctly so that it will still give you one
> > user record for each record. If you included the userid as a filter
> > and there was only 5 user records for user 2 then you would only get 5
> > rows returned and this would not be correct.
>
> > Therefore i tried to right this in hql.
>
> > from records r
> >   left join fetch r.userrecords with r.userid = :userid
>
> > However I was given the error.
>
> > Semantic exception in sqlhqlwalker.cs "with-clause not allowed on
> > fetched associations; use filters"
>
> > If i remove the fetch the query works but then the lazy queries don't
> > include the userid so the data returned is incorrect.
>
> > I'm only new to nhibernate but consider myself fairly competent with
> > sql. So if there is a better way to structure my model etc, or I
> > should be doing it another way then I'm open to suggestions too. If
> > you need more info let me know.
>
> > Many thanks,
> > Adam
>
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> --
> Fabio Maulo

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