I should have added the result before. The query looked like:
SELECT this_.contract_id as y0_
FROM [Contract] this_
inner join contract_category categories3_
on this_.contract_id = categories3_.contract_id
inner join [Category] categoryal1_
on categories3_.category_id = categoryal1_.cat_id
WHERE this_.unit_id = 8321 /* @p0 */
and this_.status_contract_id > 7 /* @p1 */
and this_.stop_date > '2010-08-21T10:33:15.00' /* @p2 */
The result as you can read is the list of contract id-s.
On 20 aug, 23:25, Chris J <[email protected]> wrote:
> What does it return?
>
> On Aug 20, 1:09 pm, Melborp <[email protected]> wrote:
>
>
>
> > Hej Chris,
>
> > Thank you for taking the time to answer.
>
> > I was thinking about projections, but wasnt really sure how to apply
> > it in this case.
>
> > I tried your approach:
> > var query = _nHibernateSession.CreateCriteria<Contract>()
> > .Add<Contract>(c => c.Unit.Id == unitId)
> > .Add<Contract>(c => c.StatusId > 7)
> > .Add<Contract>(c => c.StopDate > DateTime.Now)
> > .SetProjection(
> > LambdaProjection.Property<Contract>(c =>
> > c.Categories)
> > );
>
> > This doesnt return Contracts, but neither does it return any
> > categories. Tried with aliases as well.
>
> > Taavi
>
> > On 20 aug, 19:58, Chris J <[email protected]> wrote:
>
> > > Does it work query the relationships from the other direction? I tried
> > > building a similar query with my own domain model, but the
> > > relationships weren't quite the same. Here's what I was thinking, not
> > > sure if it will work. This is with lambda extensions, but without
> > > creating aliases.
>
> > > var query = session.CreateCriteria<Contract>()
> > > .Add<Contract>(c => c.Unit.Id == unitId)
> > > .SetProjection(LambdaProjection.Property<Contract>(c =>
> > > c.Categories));
>
> > > On Aug 19, 3:04 pm, Melborp <[email protected]> wrote:
>
> > > > The subject is confusing, i couldnt figure out a way to ask it in
> > > > clear english. I do have a sample code which will clear it up.
>
> > > > Imagine having three entities:
> > > > Category
> > > > Contract
> > > > Unit
>
> > > > Contract and Category have a many to many relationship.
> > > > Contract also has one-to-one with Unit.
>
> > > > My interest is to get all categories that specific unit contracts
> > > > have. A Criteria could be described as next:
>
> > > > var query = _nHibernateSession.CreateCriteria<Category>("cat")
> > > > .CreateAlias("cat.Contracts", "contract")
> > > > .Add(Expression.Eq("contract.Unit.Id", unitId));
>
> > > > or with lambda extensions:
>
> > > > Category categoryAlias = null;
> > > > Contract contractAlias = null;
>
> > > > var query = _nHibernateSession.CreateCriteria(typeof (Category), () =>
> > > > categoryAlias)
> > > > .CreateAlias(() => categoryAlias.Contracts, () =>
> > > > contractAlias)
> > > > .Add(() => contractAlias.Unit.Id == unitId);
>
> > > > This however seems to have a sideeffect of loading in all the
> > > > referencing Contracts as well. I only want the categories loaded in.
> > > > Contract is a very complex entity and is completely unnessecary in the
> > > > current context.
>
> > > > Can this be done with Criteria API?
> > > > I tried to SetFetchMode to Lazy for category.Contracts but that had
> > > > no effect. The SQL query generated selects contracts with each
> > > > category.
>
> > > > This is however the only way i could query for categories with the
> > > > condition needed. Am i missing something?
> > > > I prefer a no magic string solution and thats also why i have two
> > > > different query representations that are working. I must admit that
> > > > the non lambda is more readable. I wish Nhib to Linq could do this in
> > > > 2.1.2.- Peida kommenteeritud tekst -
>
> > > - Näita kommenteeritud teksti -- Peida kommenteeritud tekst -
>
> - Näita kommenteeritud teksti -
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