c# - Error "not an association id" in nhibernate -


i got following error message nhibernate:

{"not association: id"}

model.order orderalias = null; model.unit unitalias = null;

query reproduce:

var query = m_hibernatesession.queryover<model.order>(() => orderalias)                     .joinalias(() => orderalias.id, () => unitalias, jointype.innerjoin)                     .transformusing(transformers.distinctrootentity)                     .orderby(x => x.ponumber).desc.take(5);

(for db model here: nhibernate criteria selecting different tables)

what mean , how can correctly retrieve result list?

thx

in model.order class, id should of type model.unit.

make sure have classes both model.order , model.unit


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