TerraHS-0.3 Contents Index

TerraHS.Misc.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 where loadCollection :: Ptr c -> String -> IO [a] saveCollection :: Ptr c -> String -> [a] -> IO Bool

The Connection class

class Connection c where

Methods open :: c -> IO (Ptr c) open a connection to a database close :: Ptr c -> IO () close a opened connection Instances Connection TeDatabase

The Databases class

class Connection c => Databases a c where

Methods loadCollection :: Ptr c -> String -> IO [a] load a object list from database saveCollection :: Ptr c -> String -> [a] -> IO Bool save a object list a to database Foreign.Ptr.Ptr c Instances Databases TeGeoObject TeDatabase

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