1'use strict';
 2
 3/**
 4 * methods a collection must implement
 5 */
 6
 7var methods = [
 8    'find'
 9  , 'findOne'
10  , 'update'
11  , 'remove'
12  , 'count'
13  , 'distinct'
14  , 'findAndModify'
15  , 'aggregate'
16  , 'findStream'
17];
18
19/**
20 * Collection base class from which implementations inherit
21 */
22
23function Collection () {}
24
25for (var i = 0, len = methods.length; i < len; ++i) {
26  var method = methods[i];
27  Collection.prototype[method] = notImplemented(method);
28}
29
30module.exports = exports = Collection;
31Collection.methods = methods;
32
33/**
34 * creates a function which throws an implementation error
35 */
36
37function notImplemented (method) {
38  return function () {
39    throw new Error('collection.' + method + ' not implemented');
40  }
41}
42