Jak na inner join v hibernatu s 2 or vazbami

[Ing. Lumír Návrat]

Zdravim,

valcim dneska s NHibernatem a mam tento dotaz:
ISQLQuery = sesssion.createSQLQuery("SELECT DISTINCT Station_W.*" +
                                                " FROM BasinSchema_W 
INNER JOIN" +
                                                " Channel_W ON 
BasinSchema_W.id = Channel_W.basinSchemaId INNER JOIN" +
                                                " Station_W ON 
Channel_W.endRiverStationId = Station_W.id OR 
Channel_W.sourceRiverStationId = Station_W.id" +
                                                " WHERE 
(BasinSchema_W.id = :id)").AddEntity(typeof (RiverStation));

Problem mam v tom, ze to ma vratit vsechny stanice, ktere jsou jak 
pocatecni, tak koncove na kanalech daneho schematizace povodi.
V HQL se mi to podarilo pres 2 dotazy a ty pak sloucit v HashedSetu, ale 
radeji bych neco peknejsiho nez tento SQL nebo 2 HQL.
Jde to vubec? V manualu jsem nic podobneho nenasel.

Lumi(r)

P.S. EndRiverStation na associaci mezi channel-riverstation 1-1 a 
SourceRiverStation 1-0..1 a BasinSchema-channel aggreguje na 1-*
(Notace : kardinality u trid v  UML diagramu)