Here's a simplified version of what I have now. 
lock_db_tables(); # lock tables and/or start a transaction 
                  # in a database independent way

# some preparation that requires a database lock

my $firsttime = 1;
foreach my $id (@list_o_object_ids) {
   lock_db_tables() unless $firsttime;
   $firsttime = 0;

   my $obj = new Thingy($id); # gets stuff from db

   # make changes, save back to db.

   unlock_tables();
}

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The pre-loop code and the first loop iteration need to be in the same transaction. Subsequent loop iterations need to each be their own transaction.

--DrWhy

"If God had meant for us to think for ourselves he would have given us brains. Oh, wait..."

In reply to Re^2: I need a different continue by DrWhy
in thread I need a different continue by DrWhy

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