queryover and (x like 'a' or y like 'a')
Hi Is there any elegant way of combining 'like' and 'or' when i'm using queryover API? for 'like' there is something like:
query.WhereRestrictionOn(x=>x.Code).IsLike(codePart)
for 'or' i can do something like:
query.Where( x=>x.Code == codePart || x.Description== codePart)
but how can I create a query like this:
select * from n where code like '%abc%' or description like '%abc%'
Answer
You could use the NHibernate Disjunction class to do this in a more elegant (IMHO) fashion:
var disjunction= new Disjunction();
disjunction.Add(Restrictions.On<Type>(e => e.Code).IsLike(codePart));
disjunction.Add(Restrictions.On<Type>(e => e.Description).IsLike(codePart));
//(and so on)
and then:
query.Where(disjunction)
Each "OR" is a separate instruction, which helps if you want to add the predicates conditionally.