Get EntityCollection from within another entity

I have an entityA that contains a EntityCollection of entityB. I updated the metdata for EntityA with the [include] decoration over the line defining the entityB as follows:

[Include]
public EntityCollection<daily> daily { get; set; }

in my domainservice class I have a function to retrieve entityA as follows:

var summary =
(from S in ObjectContext.summery.Include("daily")
                 where S.daily_number == daily_number
                 && S.month_number == month_number
                 && S.period_id == period_id
                 开发者_JAVA百科select S).FirstOrDefault();
            return summary;

From the Client I always get count Zero of entityB. What am I missing here !!

Best regards

---

You'll need to define the association between summery and daily with the AssociationAttribute.

[Include]
[Association("SomeUniqueName", "summery_id", "parent_summery_id", IsForeignKey = false)]
public EntityCollection<daily> daily { get; set; }

I am making the following assumptions about your classes

public class summery
{
...
    public int? summery_id { get; set; }
...
}

public class daily
{
...
    // Foreign key to the parent summery
    public int parent_summery_id { get; set; }
...
}

Edit:

In response to Waleed's comment, a composite foreign key association could look like

[Association("SomeUniqueName",
             "summery_field1, summary_field2, summary_field3",
             "parent_summary_filed1, parent_summary_filed2, parent_summary_filed3",
             IsForeignKey = false)]