Linq Nhibernate left join - linq

Question

A Theft has an action property
This is the query i'm trying to get NHibernate.Linq to produce:
SELECT * FROM `thefts`
LEFT JOIN memberThefts
ON thefts.id = memberThefts.theftId AND memberThefts.memberId = 1
I want to get a list of all the thefts where action.memberId == some number or just null if it doesn't find a row, simple as a query yet it's been giving me a nightmare all day!
thefts = session.Query<Theft>()
.Fetch(x => x.action)
.Where(x => x.action.memberId == member.id)
.ToList();
This executes the following SQL:
select theft0_.id as id9_0_,
memberthef1_.memberId as memberId7_1_,
theft0_.name as name9_0_,
theft0_.chance as chance9_0_,
memberthef1_.theftId as theftId7_1_,
memberthef1_.availableTime as availabl3_7_1_
from thefts theft0_
left outer join memberThefts memberthef1_
on theft0_.id = memberthef1_.theftId,
memberThefts memberthef2_
where theft0_.id = memberthef2_.theftId
and memberthef2_.memberId =1 /* ?p0 */
The theft class:
public class Theft
{
public virtual byte id { get; set; }
public virtual string name { get; set; }
public virtual byte rank { get; set; }
public virtual byte chance { get; set; }
public virtual MemberTheft action { get; set; }
...
And it's mapping:
public TheftMap()
{
Table("thefts");
Id(x => x.id);
Map(x => x.name);
Map(x => x.id);
Map(x => x.chance);
References(x => x.action)
.Nullable()
.PropertyRef(x => x.theftId)
.Column("id");
}
Any solution will do HQL, QueryOver etc

Answer 1

It can't be done using the LINQ provider, but you can do it with QueryOver. Something along the lines of:
MemberTheft memberAlias = null;
var result = Session.QueryOver<Theft>()
.Left.JoinQueryOver(x => x.action, () => memberAlias)
.Where(() => memberAlias.memberId == member.id);
Edit: Updated Query.