storage/mozStorageResultSet.cpp
author moz-wptsync-bot <wptsync@mozilla.com>
Wed, 06 Jun 2018 17:50:35 +0000
changeset 1536247 ada68664895bc87c588d998a37aee6af1452d564
parent 467925 dd79977a3286d947aff8e270245d05c05e676964
child 1044287 c2b755ed9c53aa37b333e45139404699ac51e0b2
child 1252009 ac9e0a05c85d7c5a5902b82ba74cd3f71e625f73
child 1336492 46ef8bf6c68664b27953e4680747da7a985c30b2
child 1343097 98e2b4ee9775a2a2b5cc1bb8a390bfe901814f38
child 1398386 80ed235cff6a319ed3171c949f352a5d6e41726e
permissions -rw-r--r--
Bug 1467143 - [wpt-sync] Update web-platform-tests to 75c1b7437dfc0d505520de95df4a96cb16c9afcc, a=testonly wpt-head: 75c1b7437dfc0d505520de95df4a96cb16c9afcc wpt-type: landing

/* -*- 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/. */

#include "mozStorageRow.h"
#include "mozStorageResultSet.h"

namespace mozilla {
namespace storage {

////////////////////////////////////////////////////////////////////////////////
//// ResultSet

ResultSet::ResultSet()
: mCurrentIndex(0)
{
}

ResultSet::~ResultSet()
{
  mData.Clear();
}

nsresult
ResultSet::add(mozIStorageRow *aRow)
{
  return mData.AppendObject(aRow) ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}

/**
 * Note:  This object is only ever accessed on one thread at a time.  It it not
 *        threadsafe, but it does need threadsafe AddRef and Release.
 */
NS_IMPL_ISUPPORTS(
  ResultSet,
  mozIStorageResultSet
)

////////////////////////////////////////////////////////////////////////////////
//// mozIStorageResultSet

NS_IMETHODIMP
ResultSet::GetNextRow(mozIStorageRow **_row)
{
  NS_ENSURE_ARG_POINTER(_row);

  if (mCurrentIndex >= mData.Count()) {
    // Just return null here
    return NS_OK;
  }

  NS_ADDREF(*_row = mData.ObjectAt(mCurrentIndex++));
  return NS_OK;
}

} // namespace storage
} // namespace mozilla