protected static function logDiff(\helpers_RdfDiff $diff)
{
$folder = FILES_PATH . 'updates' . DIRECTORY_SEPARATOR;
$updateId = time();
while (file_exists($folder . $updateId)) {
$count = isset($count) ? $count + 1 : 0;
$updateId = time() . '_' . $count;
}
$path = $folder . $updateId;
if (!mkdir($path, 0700, true)) {
throw new \common_exception_Error('Unable to log update to ' . $path);
}
FileModel::toFile($path . DIRECTORY_SEPARATOR . 'add.rdf', $diff->getTriplesToAdd());
FileModel::toFile($path . DIRECTORY_SEPARATOR . 'remove.rdf', $diff->getTriplesToRemove());
}