public static final function rollback()
{
if (0 === Kit::len(self::$history)) {
return FALSE;
}
foreach (Kit::reversed(self::$history) as $operation) {
if (self::OP_INSERT === $operation['Type']) {
$operation['Collection']->deleteTheOnlyOne(['_id' => $operation['Id']], TRUE);
} elseif (self::OP_UPDATE === $operation['Type']) {
$operation['Collection']->updateTheOnlyOne(['_id' => $operation['Document']['_id']], $operation['Document'], TRUE);
} elseif (self::OP_REMOVE === $operation['Type']) {
$operation['Collection']->addOne($operation['Document'], TRUE);
}
}
self::$isChanged = FALSE;
return TRUE;
}