diff -r 000000000000 -r 6474c204b198 storage/src/mozStorageResultSet.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/storage/src/mozStorageResultSet.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozStorageResultSet_h
+#define mozStorageResultSet_h
+
+#include "mozIStorageResultSet.h"
+#include "nsCOMArray.h"
+#include "mozilla/Attributes.h"
+class mozIStorageRow;
+
+namespace mozilla {
+namespace storage {
+
+class ResultSet MOZ_FINAL : public mozIStorageResultSet
+{
+public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_MOZISTORAGERESULTSET
+
+  ResultSet();
+  ~ResultSet();
+
+  /**
+   * Adds a tuple to this result set.
+   */
+  nsresult add(mozIStorageRow *aTuple);
+
+  /**
+   * @returns the number of rows this result set holds.
+   */
+  int32_t rows() const { return mData.Count(); }
+
+private:
+  /**
+   * Stores the current index of the active result set.
+   */
+  int32_t mCurrentIndex;
+
+  /**
+   * Stores the tuples.
+   */
+  nsCOMArray<mozIStorageRow> mData;
+};
+
+} // namespace storage
+} // namespace mozilla
+
+#endif // mozStorageResultSet_h