IHave the following NHibernate query using a subquery:
NHContext.Session.QueryOver<Item>()
.WithSubquery.WhereProperty(x => x.ItemId).In(QueryOver.Of<Foo>().Where(x => x.AFlag).Select(x => x.ItemId))
.WithSubquery.WhereProperty(x => x.ItemId).In(QueryOver.Of<Bar>().Where(x => x.AFlag).Select(x => x.Item))
.Future<Item>();
This runs the following SQL:
SELECT *
FROM item this_
WHERE this_.ItemId in (SELECT this_0_.ItemId as y0_
FROM Foo this_0_
WHERE this_0_.AFlag = 1 /* @p0 */)
and this_.ItemId in (SELECT this_0_.ItemId as y0_
FROM Bar this_0_
WHERE this_0_.AFlag = 1 /* @p0 */)
I would like it to use OR so for example:
SELECT *
FROM item this_
WHERE this_.ItemId in (SELECT this_0_.ItemId as y0_
FROM Foo this_0_
WHERE this_0_.AFlag = 1 /* @p0 */)
or this_.ItemId in (SELECT this_0_.ItemId as y0_
FROM Bar this_0_
WHERE this_0_.AFlag = 1 /* @p0 */)
I know I can do it in Criteria by doing something like:
var disjunction = new Disjunction();
disjunction.Add(Subqueries.PropertyIn("ItemId",
DetachedCriteria.For<Foo>()
.SetProjection(Projections.Property("ItemId"))
.Add(Restrictions.Eq("AFlag", 1))
));
But was wondering if there was an easier way to do it via QueryOver, and avoiding using strings for property names.
Thanks for any help.
For the less common disjunction(or) I think you need to use the Subqueries.WhereProperty<>
instead of WithSubquery
Session.QueryOver<Item>()
.Where(Restrictions.Disjunction()
.Add(Subqueries.WhereProperty<Item>(x => x.ItemId).In(QueryOver.Of<Foo>().Where(x => x.AFlag).Select(x => x.ItemId)))
.Add(Subqueries.WhereProperty<Item>(x => x.ItemId).In(QueryOver.Of<Bar>().Where(x => x.AFlag).Select(x => x.Item))))
.Future<Item>();