HDBC-session-0.1.1.0/0000755000000000000000000000000012764452365012234 5ustar0000000000000000HDBC-session-0.1.1.0/HDBC-session.cabal0000644000000000000000000000247012764452365015404 0ustar0000000000000000name: HDBC-session version: 0.1.1.0 synopsis: Bracketed connection for HDBC description: This package contains a base bracketed function to call close correctly against opend DB connection. homepage: http://khibino.github.io/haskell-relational-record/ license: BSD3 license-file: LICENSE author: Kei Hibino maintainer: ex8k.hibino@gmail.com copyright: Copyright (c) 2013-2016 Kei Hibino category: Database build-type: Simple cabal-version: >=1.10 tested-with: GHC == 8.0.1 , GHC == 7.10.1, GHC == 7.10.2, GHC == 7.10.3 , GHC == 7.8.1, GHC == 7.8.2, GHC == 7.8.3, GHC == 7.8.4 , GHC == 7.6.1, GHC == 7.6.2, GHC == 7.6.3 , GHC == 7.4.1, GHC == 7.4.2 library exposed-modules: Database.HDBC.Session build-depends: base <5 , HDBC hs-source-dirs: src ghc-options: -Wall default-language: Haskell2010 source-repository head type: git location: https://github.com/khibino/haskell-relational-record source-repository head type: mercurial location: https://bitbucket.org/khibino/haskell-relational-record HDBC-session-0.1.1.0/Setup.hs0000644000000000000000000000005612764452365013671 0ustar0000000000000000import Distribution.Simple main = defaultMain HDBC-session-0.1.1.0/LICENSE0000644000000000000000000000275612764452365013253 0ustar0000000000000000Copyright (c) 2013, Kei Hibino All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Kei Hibino nor the names of other contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. HDBC-session-0.1.1.0/src/0000755000000000000000000000000012764452365013023 5ustar0000000000000000HDBC-session-0.1.1.0/src/Database/0000755000000000000000000000000012764452365014527 5ustar0000000000000000HDBC-session-0.1.1.0/src/Database/HDBC/0000755000000000000000000000000012764452365015227 5ustar0000000000000000HDBC-session-0.1.1.0/src/Database/HDBC/Session.hs0000644000000000000000000000732712764452365017217 0ustar0000000000000000{-# LANGUAGE Rank2Types #-} -- | -- Module : Database.HDBC.Session -- Copyright : 2013-2016 Kei Hibino -- License : BSD3 -- -- Maintainer : ex8k.hibino@gmail.com -- Stability : experimental -- Portability : unknown -- -- This module provides a base bracketed function -- to call close correctly against opend DB connection. module Database.HDBC.Session ( -- * Bracketed session -- $bracketedSession withConnectionCommit, withConnectionIO, withConnectionIO', withConnection, -- * Show errors -- $showErrors showSqlError, handleSqlError' ) where import Database.HDBC (IConnection, handleSql, SqlError(seState, seNativeError, seErrorMsg)) import qualified Database.HDBC as HDBC import Control.Exception (bracket) {- $bracketedSession Bracket function implementation is provided by several packages, so this package provides base implementation which requires bracket function and corresponding lift function. -} {- $showErrors Functions to show 'SqlError' type not to show 'String' fields. -} -- | show 'SqlError' not to show 'String' fields. showSqlError :: SqlError -> String showSqlError se = unlines ["seState: '" ++ seState se ++ "'", "seNativeError: " ++ show (seNativeError se), "seErrorMsg: '" ++ seErrorMsg se ++ "'"] -- | Like 'handleSqlError', but not to show 'String' fields of SqlError. handleSqlError' :: IO a -> IO a handleSqlError' = handleSql (fail . reformat . showSqlError) where reformat = ("SQL error: \n" ++) . unlines . map (" " ++) . lines -- | Run a transaction on a HDBC IConnection and close the connection. withConnection :: (Monad m, IConnection conn) => (forall c. m c -> (c -> m ()) -> (c -> m a) -> m a) -- ^ bracket -> (forall b. IO b -> m b) -- ^ lift -> IO conn -- ^ Connect action -> (conn -> m a) -- ^ Transaction body -> m a withConnection bracket' lift connect tbody = bracket' (lift open') (lift . close') bodyWithRollback where open' = handleSqlError' connect close' :: IConnection conn => conn -> IO () close' = handleSqlError' . HDBC.disconnect bodyWithRollback conn = bracket' (return ()) -- Do rollback independent from driver default behavior when disconnect. (const . lift . handleSqlError' $ HDBC.rollback conn) (const $ tbody conn) -- | Run a transaction on a HDBC 'IConnection' and close the connection. -- Simple 'IO' version. withConnectionIO :: IConnection conn => IO conn -- ^ Connect action -> (conn -> IO a) -- ^ Transaction body -> IO a -- ^ Result transaction action withConnectionIO = withConnection bracket id -- | Same as 'withConnectionIO' other than issuing commit at the end of transaction body. -- In other words, the transaction with no exception is committed. -- Handy defintion for simple transactions. withConnectionCommit :: IConnection conn => IO conn -- ^ Connect action -> (conn -> IO a) -- ^ Transaction body -> IO a -- ^ Result transaction action withConnectionCommit conn body = withConnectionIO conn $ \c -> do x <- body c HDBC.commit c return x -- | Same as 'withConnectionIO' other than wrapping transaction body in 'handleSqlError''. withConnectionIO' :: IConnection conn => IO conn -- ^ Connect action -> (conn -> IO a) -- ^ Transaction body -> IO a -- ^ Result transaction action withConnectionIO' connect body = withConnectionIO connect $ handleSqlError' . body