gecko-dev/storage/mozStorageResultSet.cpp

48 строки
1.3 KiB
C++

/* -*- 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