/**
* @param IDatabase $dbw
* @param string $fname Caller name (usually __METHOD__)
* @param callable $callback Callback that takes (IDatabase, method name string)
*/
public function __construct(IDatabase $dbw, $fname, callable $callback)
{
$this->dbw = $dbw;
$this->fname = $fname;
$this->callback = $callback;
if ($this->dbw->trxLevel()) {
$this->dbw->onTransactionResolution([$this, 'cancelOnRollback'], $fname);
}
}
/**
* @param callable $callback
* @param string $fname Calling method
* @param IDatabase|null $dbw Abort if this DB is rolled back [optional] (since 1.28)
*/
public function __construct(callable $callback, $fname = 'unknown', IDatabase $dbw = null)
{
$this->callback = $callback;
$this->fname = $fname;
if ($dbw && $dbw->trxLevel()) {
$dbw->onTransactionResolution([$this, 'cancelOnRollback'], $fname);
}
}