NAME

       Catmandu::Transactional - Optional role for transactional stores

SYNOPSIS

           # bag will be untouched
           my $store->transaction(sub {
               $store->bag('books')->add({title => 'Time must have a stop'});
               die;
           });

METHODS

   transaction($sub)
       "transaction" takes a coderef that will be executed in the context of a transaction. If an
       error is thrown, the transaction will rollback. If the code executes successfully, the
       transaction will be committed. There is no support for nested transactions, nested calls
       to "transaction" will simply be subsumed by their parent transaction.