Exempel implementation

    public class TheDefaultCategory : ICreateCriteria<Category>
    {
        public DetachedCriteria GetCriteria()
        {
            return DetachedCriteria.For<Category>().Add(Restrictions.Eq("Default", true));
        }
    }

I Repositoryt

        public IEnumerable<T> Matching<T>(ICreateCriteria<T> query, params IAppendCriterion[] extraCriterias)
        {
            var criteria = query.GetCriteria();
            foreach (var criterion in extraCriterias)
            {
                criterion.Append(criteria);
            }

            return criteria.GetExecutableCriteria(_session).List<T>();
        }

        public IPagedList<T> Matching<T>(ICreateCriteria<T> query, IPagedQuerySettings paging, params IAppendCriterion[] extraCriterias)
        {
            var multiCriteria = _session.CreateMultiCriteria();

            var detachedCriteria = query.GetCriteria();
            foreach (var criterion in extraCriterias)
            {
                criterion.Append(detachedCriteria);
            }

            var totalCountCriteria = CriteriaTransformer.Clone((DetachedCriteria) detachedCriteria);
            //Ta bort alla ORDER BY
            totalCountCriteria.ClearOrders();
            totalCountCriteria.SetProjection(Projections.RowCount());

            //Get the rows
            multiCriteria.Add(totalCountCriteria);

            if (paging != null)
            {
                detachedCriteria.SetFirstResult(paging.GetFirstResult()).SetMaxResults(paging.PageSize);
            }

            //Get the actual result
            multiCriteria.Add((ICriteria) detachedCriteria.GetExecutableCriteria(_session));

            var results = multiCriteria.List();

            int count = (int)((IList)results[0])[0];
            var entities = (IList)results[1];

            return new PagedList<T>(paging.Page, paging.PageSize, count, entities.Cast<T>());

        }

Interfacet för frågan

    public interface ICreateCriteria<T> : ICreateCriteria
    { }

    public interface ICreateCriteria
    {
        DetachedCriteria GetCriteria();
    }