nhibernate - QueryOver child collections giving cartesian products -

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i have domain trying query looks (with other unimportant properties omitted) , related mapping:

// domain: public class order {     public virtual site release { get; set;}     public virtual site return { get; set;} }  public class site {     public virtual calendar { get; set; } }  public class calendar {     public virtual ilist<holidaydate> holidays { get; set; } }  // mapping: public class ordermap : classmap<order> {     public ordermap()     {         references(x => x.release);         references(x => x.return);     } }  public class sitemap : classmap<site> {     public sitemap()     {         component(x => x.calendar, component =>         {             component.map(x => x.workingdays);             component.hasmany(x => x.holidays).cascade.alldeleteorphan();         });     } }

i query orders, having specific status , joining both release , return release, join in calendar (which component-mapped entity) , calendar join in holidays (left outer join). have tried few different ways, try join in holidays, cartesian product (i assume both sites holidays).

i did attempt futures (like this):

var orders = session.queryover<order>()     .where(x => x.status == selected.status)     .future<order>();  session.queryover<order>()     .joinalias(x => x.release, () => release, jointype.leftouterjoin)     .joinalias(() => release.calendar.holidays, () => holiday, jointype.leftouterjoin)     .where(x => x.status == selected.status)     .future<order>();  var output = orders.tolist();

...but still more holidays expect. if can query figured out, filter holidays date > todays date.

is @ possible perform query or there option have missed?


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