Hello, Haskell Cafe. I posted a question a while ago about this, but didn't receive any responses. I'd like to try again. I've got a test case which uses John Goerzen's HDBC.ODBC. The problem I have is that it appears too lazy - using the results of a query after disconnecting causes an "unknown exception". If I use the results before disconnecting, it works fine.
module Main where import Data.List (intersperse) import qualified Database.HDBC as DB import Database.HDBC.ODBC (connectODBC) main :: IO () main = do dbh <- connectODBC "DSN=test" res <- DB.getTables dbh -- print (show ((concat . intersperse ", ") res)) DB.disconnect dbh print (show ((concat . intersperse ", ") res)) Compiling and running this will show: $ ./db-discon db-discon: unknown exception If I uncomment the first 'print' line, then it works as expected: $ ./db-discon "\"d1, foo, odbctest\"" "\"d1, foo, odbctest\"" Am I just expecting the wrong thing from Haskell? Is there a technical reason why HDBC can't synchronize the IO so that everything is resolved before the disconnect? Or is this a bug in HDBC? Thanks, Timothy -- If you're not part of the solution, you're part of the precipitate. _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
