how to get the total count of rows

from my previous question: multiple results in a single call

how would I get the count of all articles in a given categ开发者_运维技巧ory?

I prefer criteria query if possible (would love it if you could show me how to do it in both criteria and hql)

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You'll have to use projections.

I believe, you'll have to create a criteria which will look something like this:

ICriteria crit = mySession.CreateCriteria (typeof(Article));

crit.Add (Restrictions.Eq ("Category", someCategory));

crit.SetProjection (Projections.Count("somePropertyNameOfArticle"));

int result = crit.UniqueResult<int>();