-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | Wrapper around errors from sqlite-simple
--   
--   Wrapper around errors from sqlite-simple. Get easy-to-pattern-match
--   data types for constraint errors.
@package sqlite-simple-errors
@version 0.5.0.0


module Database.SQLite.SimpleErrors.Types

-- | Constraint represents the kind of constraint violation returned by
--   SQLite.
data Constraint
NotNull :: Constraint
ForeignKey :: Constraint
Unique :: Constraint
Check :: Constraint

-- | SQLiteResponse is a wrapper around the different kinds of errors that
--   can be returned frm sqlite-simple. If there is a constraint error,
--   then we will construnct a SQLConstraintError instance.
data SQLiteResponse
SQLConstraintError :: Constraint -> Text -> SQLiteResponse
SQLFormatError :: FormatError -> SQLiteResponse
SQLResultError :: ResultError -> SQLiteResponse
SQLOtherError :: SQLError -> SQLiteResponse
instance GHC.Classes.Eq Database.SQLite.SimpleErrors.Types.SQLiteResponse
instance GHC.Show.Show Database.SQLite.SimpleErrors.Types.SQLiteResponse
instance GHC.Classes.Eq Database.SQLite.SimpleErrors.Types.Constraint
instance GHC.Show.Show Database.SQLite.SimpleErrors.Types.Constraint
instance GHC.Exception.Exception Database.SQLite.SimpleErrors.Types.SQLiteResponse


module Database.SQLite.SimpleErrors.Parser

-- | Given a SQL error, converts it into a SQLiteResponse. If the error is
--   not an ErrorConstraint, it is essentially just wrapped in
--   SQLOtherError. If the error is an ErrorConstraint error, try to parse
--   the error as one of the following kinds of constraint violations:
--   Foreign Key, Not Null, Unique, or Check.
receiveSQLError :: SQLError -> SQLiteResponse


module Database.SQLite.SimpleErrors

-- | Type synonym for what is returned by runDBAction. Either a
--   SQLiteResponse or another type.
type DatabaseResponse a = Either SQLiteResponse a

-- | runDBAction accepts an IO action to perform some database logic using
--   sqlite-simple. We capture any errors that are returned and wrap them
--   in our SQLiteResponse type. If any other type of exception is raised,
--   it is rethrown.
runDBAction :: IO a -> IO (DatabaseResponse a)