/**
* Get the javascript shell of update
* @return string
*/
public static function update($collection, $newData, $oldData)
{
if ($newData !== $oldData) {
$newDataJson = Convert::document2Json($newData);
if (empty($oldData)) {
$newDataStr = Convert::Json2Str($newDataJson);
return "db.getCollection('{$collection}').insert({$newDataStr});";
} else {
$id = $oldData['_id'] . '';
$oldDataJson = Convert::document2Json($oldData);
$updateStr = self::_generateShell($newDataJson, $oldDataJson);
return "db.getCollection('{$collection}').update({'_id': ObjectId('{$id}')},{$updateStr});";
}
} else {
return "";
}
}