NHibernate QueryOver with WhereRestriction as OR

Question

I have this query but I can\'t seem to find how I set my WhereRestrictionOn as an OR. Now they function as AND but I want one OR the other.

var privateInfo =         


        

Answer 1

The top level .Where() family (including WhereRestrictionOn) is always joined with AND. So we have to explicitly use something like:

• Restrictions.Or(restriction1, restriction1)
• Restrictions.Disjunction().Add(restriction1).Add(restriction2).Add(...

So, this could be our case:

.Where(
    Restrictions.Disjunction()
        .Add(Restrictions.On<ConContact>(c => c.FirstName)
                              .IsLike(_selectedFirstLetter, MatchMode.Start))
        .Add(Restrictions.On<ConContact>(c => c.LastName)
                              .IsLike(_selectedFirstLetter, MatchMode.Start))
        // more OR ...
        //.Add(Restrictions.On<ConContact>(c => c.MiddleName)
        //                      .IsLike(_selectedFirstLetter, MatchMode.Start))
)

As discussed here: 16.2. Simple Expressions, for simple stuff we can even use || (cited small example):

.Where(p => p.Name == "test name" && (p.Age > 21 || p.HasCar))