Move query logic into mongo (#1885)

* Move Parse Server logic into Parse Server and out of MongoAdapter

* Move untransforming up one level

* Make find() in MongoStorageAdapter

* Put nested object untransforming into it's own function

* Simplfy nested untransform

* Don't mess with inner object keys called _auth_data_*

* Prevent untransforming inner object keys named _p_*

* Fix inner keys named _rperm, _wperm

* Fix bugs with inner objects behaving strange when other fields have same name as key in specific circumstances

* remove params from untransform nested object

* Revert changes to find

src/Adapters/Storage/Mongo/MongoStorageAdapter.js

@@ -197,6 +197,14 @@ export class MongoStorageAdapter {
     });
   }
 
+  // Executes a find. Accepts: className, query in Parse format, and { skip, limit, sort }.
+  // Accepts the schemaController for legacy reasons.
+  find(className, query, { skip, limit, sort }, schemaController) {
+    return this.adaptiveCollection(className)
+    .then(collection => collection.find(query, { skip, limit, sort }))
+    .then(objects => objects.map(object => transform.mongoObjectToParseObject(schemaController, className, object)));
+  }
+
   get transform() {
     return transform;
   }