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.