Call oncreate callback if new elem created while loading

mongox/query/query.go

@@ -17,6 +17,7 @@ type Query struct {
 	updater   Updater
 	ondecode  Callbacks
 	onclose   Callbacks
+	oncreate  Callbacks
 }
 
 // And function pushes the elem query to the $and array of the query
@@ -122,6 +123,11 @@ func (q *Query) OnClose() (callbacks Callbacks) {
 	return q.onclose
 }
 
+// OnCreate callback is called if the mongox creates a new document instance during loading
+func (q *Query) OnCreate() (callbacks Callbacks) {
+	return q.onclose
+}
+
 // Empty checks the query for any content
 func (q *Query) Empty() (isEmpty bool) {
 	return len(q.m) == 0