Implement isCapped

lib/collection.js

@@ -210,16 +210,11 @@ Collection.prototype.reIndex = function (cb) {
 }
 
 Collection.prototype.isCapped = function (cb) {
-  var cursor = new Cursor({
-    query: {name: this._fullColName()},
-    projection: {},
-    onserver: this._getConnection,
-    fullCollectionName: this._dbname + '.system.namespaces'
-  })
+  var self = this
+  this._getConnection(function (err, connection) {
+    if (err) { return cb(err) }
 
-  cursor.toArray(function (err, cols) {
-    if (err) return cb(err)
-    cb(null, (cols[0].options && cols[0].options.capped) || false)
+    connection.collection(self._fullColName()).isCapped(cb)
   })
 }