terrahs-0.7: A library for GIS Programs in Haskell.Source codeContentsIndex
TerraHS.Algebras.DB.Databases
Contents
The Connection class
The Databases class
Description
Module for handling a databases connection
Synopsis
class Connection c where
open :: c -> IO (Ptr c)
close :: Ptr c -> IO ()
class Connection c => Databases a c p where
retrieve :: Ptr c -> p -> IO a
store :: Ptr c -> p -> a -> IO Bool
The Connection class
class Connection c whereSource
Methods
open :: c -> IO (Ptr c)Source
open a connection to a database
close :: Ptr c -> IO ()Source
close a opened connection
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The Databases class
class Connection c => Databases a c p whereSource
Methods
retrieve :: Ptr c -> p -> IO aSource
load a object list from database
store :: Ptr c -> p -> a -> IO BoolSource
save a object list a to database Foreign.Ptr.Ptr c
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