Merge: mongodb: allow client to set `skip` and `limit` when calling `find`

Signed-off-by: Alexandre Terrasa <alexandre@moz-code.org>

Pull-Request: #1868
Reviewed-by: Romain Chanoir <romain.chanoir@viacesi.fr>
Reviewed-by: Jean Privat <jean@pryen.org>

diff --cc lib/mongodb/mongodb.nit
index fd753bd,64e68a0..78cd75d
--- 1/lib/mongodb/mongodb.nit
--- 2/lib/mongodb/mongodb.nit
+++ b/lib/mongodb/mongodb.nit
@@@ -533,9 -612,12 +537,11 @@@ class MongoCollectio
        # var doc = col.find(query)
        # assert doc["foo"] == 10
        # ~~~
-       fun find(query: JsonObject): nullable JsonObject do
+       fun find(query: JsonObject, skip, limit: nullable Int): nullable JsonObject do
 -              assert is_alive
                var q = new NativeBSON.from_json_string(query.to_json.to_cstring)
-               var c = native.find(q)
+               var s = skip or else 0
+               var l = limit or else 0
+               var c = native.find(q, s, l)
                q.destroy
                if c == null then return null
                var cursor = new MongoCursor(c)
@@@ -556,15 -642,15 +566,17 @@@
        # query["foo"] = 10
        # assert col.find_all(query).length > 0
        # ~~~
-       fun find_all(query: JsonObject): Array[JsonObject] do
+       fun find_all(query: JsonObject, skip, limit: nullable Int): Array[JsonObject] do
 -              assert is_alive
+               var s = skip or else 0
+               var l = limit or else 0
                var res = new Array[JsonObject]
-               var c = native.find(query.to_bson.native)
+               var c = native.find(query.to_bson.native, s, l)
                if c == null then return res
                var cursor = new MongoCursor(c)
 -              for item in cursor do res.add item
 +              while cursor.is_ok do
 +                      res.add cursor.item
 +                      cursor.next
 +              end
                return res
        end
  

diff --cc lib/mongodb/native_mongodb.nit
Simple merge