How to get a distinct result with nHibernate and QueryOver API?

Question

I have this Repository method

    public IList ListMessagesBy(string text, IList tags, int pageIndex, out int count, out int pageSi         


        

Answer 1

Try something like this

public IPagedList Find(int pageIndex, int pageSize)
{
    Client clientAlias = null;

    var query = Session.QueryOver(() => clientAlias)

        .Select(
            Projections.Distinct(
                Projections.ProjectionList()
                    .Add(Projections.Property(x => x.Id).As("Id"))
                    .Add(Projections.Property(x => x.Name).As("Name"))
                    .Add(Projections.Property(x => x.Surname).As("Surname"))
                    .Add(Projections.Property(x => x.GivenName).As("GivenName"))
                    .Add(Projections.Property(x => x.EmailAddress).As("EmailAddress"))
                    .Add(Projections.Property(x => x.MobilePhone).As("MobilePhone"))
            )
        )
        .TransformUsing(Transformers.AliasToBean())

        .OrderBy(() => clientAlias.Surname).Asc
        .ThenBy(() => clientAlias.GivenName).Asc;

    var count = query
        .ToRowCountQuery()
        .FutureValue();

    return query
        .Take(pageSize)
        .Skip(Pagination.FirstResult(pageIndex, pageSize))
        .List()
        .ToPagedList(pageIndex, pageSize, count.Value);
}