[fluent-nhib] Eager Load Property Expand - Still have N+1 problem

[sianabanana]

Hi,

I have a One - To - One relationship

Product may have 0 or 1 CustomItem
CustomItem refrences Product

my database model simplified is

Product table - columns - ProductId, CutomItemId
Custom Item table - columns - CustomItemid, Additional information

public class Product
    {
        public virtual int Id { get; set; }
        public virtual CustomItem CustomItem { get; set; }
    }

    public class CustomItem
    {
        public virtual int Id { get; set; }
        public virtual string AdditionalInformation { get; set; }
        public virtual Product Product { get; set; }
    }

my overrides (im using auto mapping)
public class ProductMapOverride : IAutoMappingOverride<Product>
    {
        public void Override(AutoMap<Product> map)
        {
            map.References(x => x.CustomItem)
                .Unique()
                .TheColumnNameIs("CustomItemId")
                .LazyLoad()
                .Cascade.None();
        }
    }

    public class CustomItemMapOverride :
IAutoMappingOverride<CustomItem>
    {
        public void Override(AutoMap<CustomItem> map)
        {
            map.HasOne(x => x.Product)
                .PropertyRef(p => p.CustomItem)
                .Cascade.All();
        }
    }

When i query my repository calling .Expand("CustomItem")

in my profiler, this is what i see..
SELECT this_.ProductId                    as ProductId0_1_,
       this_.CustomItemId                 as CustomIt2_0_1_,
       customitem2_.CustomItemId          as CustomIt1_1_0_,
       customitem2_.AdditionalInformation as Addition2_1_0_
FROM   `Product` this_
       left outer join `CustomItem` customitem2_
         on this_.CustomItemId = customitem2_.CustomItemId

this looks good - it has asked for the custom item info

but then i get n+1 of these
SELECT product0_.ProductId    as ProductId0_0_,
       product0_.CustomItemId as CustomIt2_0_0_
FROM   `Product` product0_
WHERE  product0_.CustomItemId =? p0

can any one shed any light on how i can get rid of this N+1 problem.
Its driving me crazy

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