public static AssociationEndMember GetOtherAssociationEnd(
this ObjectStateEntry entry, AssociationEndMember end)
{
end.ValidateBelongsTo(entry);
AssociationEndMember[] ends = entry.GetAssociationEnds();
if (ends[0] == end)
{
return ends[1];
}
return ends[0];
}
public static NavigationProperty GetNavigationProperty(this ObjectStateEntry entry, AssociationEndMember end)
{
end.ValidateBelongsTo(entry);
var otherEnd = entry.GetOtherAssociationEnd(end);
var relationshipType = entry.EntitySet.ElementType;
EntityType elementType = GetInheritedEntityTypeByEntityName(entry, end.Name);
NavigationProperty property =
elementType.NavigationProperties.SingleOrDefault(p => p.RelationshipType == relationshipType &&
p.FromEndMember == end && p.ToEndMember == otherEnd);
return property;
}
public static EntityKey GetEndEntityKey(this ObjectStateEntry entry, AssociationEndMember end)
{
end.ValidateBelongsTo(entry);
AssociationEndMember[] ends = entry.GetAssociationEnds();
if (ends[0] == end)
{
return entry.UsableValues()[0] as EntityKey;
}
return entry.UsableValues()[1] as EntityKey;
}