eager-loading

I have a problem trying to load a tree, this is my case, I have an entity associated with itself (Hierarchic) with n levels; the question is, Can I load eagerly the entire tree using ICriteria or HQL? Thanks in advance for any help. Ariel Yes... just set correct fetchmode. i'll include example in a minute. Example taken from here => IList cats = sess.CreateCriteria(typeof(Cat)) .Add( Expression.Like("Name", "Fritz%") ) .SetFetchMode("Mate", FetchMode.Eager) .SetFetchMode("Kittens", FetchMode.Eager) .List(); You can specify to eager load child of child too => .SetFetchMode("Kittens.BornOn",

Does anyone know a way to determine if a Rails association has been eager loaded? My situation: I have a result set where sometimes one of the associations is eager loaded, and sometimes it isn't. If it isn't eager-loaded, then I want to look up associations using ActiveRecord's find. If it is eager loaded, I want to use detect. For example, say that I have a "has_many" array of shipping_info objects in my item model. Then: If item is eager loaded, most efficient load is: item.shipping_infos.detect { |si| si.region == "United States" } If item isn't eager loaded, most efficient load is: item

I see a lot of posts where Eager fetch performs left join of child table parent table in hibernate. But when I use springboot , hibernate fires seperate sql queries - means one select query for parent table and one select query for child table. Why is there a difference? Has there been any upgrades in springboot or is it something I am doing wrong ? Below are the entities I am using: Order Entity: @Entity @Table(name="Ordertable", schema="cf_2583f365_c3c6_499a_a60d_138e7e7023eb") public class Order { @Id @Column(name = "ORDER_ID") @GeneratedValue(strategy=GenerationType.IDENTITY) private int

I have the following (simplified) class hierarchy: def Parent < ActiveRecord::Base end def Child < Parent belongs_to :other end def Other < ActiveRecord::Base end I want to get all Parent objects and -if they are Child objects- have them eager load the :other association. So I had hoped I could do: Parent.find(:all, :include => [:other]) But as I feared, I get the message: "Association named 'other' was not found; perhaps you misspelled it?" What is the best way to establish eager loading in this scenario? [Edit] As requested, here's the more concrete example: Parent = Event Child = PostEvent

In this blog entry, "CSP and transducers in JavaScript" , the author states: First, we have to realise that many array (or other collection) operations like map , filter and reverse can be defined in terms of a reduce . So then we see a number of implementations of this in Clojure aren't lazy, they are eager: user> (defn eager-map [f coll] (reduce (fn [acc v] (conj acc (f v))) [] coll)) #'user/eager-map user> (eager-map inc (range 10)) [1 2 3 4 5 6 7 8 9 10] My question is, are Clojure transducers eager? Beyamor Transducers are very simple functions - they don't have a notion of laziness or,

I am unable to filter the contents of groups table with respect to username in users table using Eager Load Constraints public function username() { return $this->belongsTo('User','fk_users_id')->select(['id','username']); } I have tried using the code below but it filters only the users data not the groups data $groups = Groups::with(array('username' => function($query) use ($keyword) { $query->where('username', 'like', '%'.$keyword.'%'); })) ->where('status',1)->paginate($paginateValue); any help is welcome... Think it should be something like this: Groups::with('User')->whereHas('User',