What's the difference/advantages between ICriteria and ICriterion in nHibernate?

c#, icriteria, nhibernate

Solution

An ICriteria is used to represent a query. You can add ICriterions to this ICriteria to express filters.

For instance:

ICriteria crit = session.CreateCriteria (typeof(Person));

crit.Add (NHibernate.Criterion.Expression.Eq("Name", "somename"));

Or, as the documentation states:

ICriterion: An object oriented representation of a query criterion that may be used as a constraint in an ICriteria query

ICriteria: a simplified API for retrieving entities by composing NHibernate.Criterion.Expression objects.

Problem

Bit of a newbie question as Im getting started with nHibernate. What's the difference between `NHibernate.Criterion.ICriterion` and `NHibernate.ICriteria` classes and which should I use for simple "`where field=value`" type filtering?

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