src/TSN/XML/Injuries.hs

   1 {-# LANGUAGE FlexibleInstances #-}
   2 {-# LANGUAGE GADTs #-}
   3 {-# LANGUAGE QuasiQuotes #-}
   4 {-# LANGUAGE ScopedTypeVariables #-}
   5 {-# LANGUAGE StandaloneDeriving #-}
   6 {-# LANGUAGE TemplateHaskell #-}
   7 {-# LANGUAGE TypeFamilies #-}
   8
   9 -- | Parse TSN XML for the DTD "injuriesxml.dtd". Each document
  10 --   contains a root element \<message\> that in turn contains zero or
  11 --   more \<listing\>s.
  12 --
  13 --   The listings will be mapped to a database table called "injuries"
  14 --   automatically. The root message is not retained.
  15 --
  16 module TSN.XML.Injuries (
  17   Listing,
  18   Message( listings ),
  19   injuries_tests )
  20 where
  21
  22 import Data.Tuple.Curry ( uncurryN )
  23 import Database.Groundhog()
  24 import Database.Groundhog.TH (
  25   defaultCodegenConfig,
  26   groundhog,
  27   mkPersist )
  28 import Test.Tasty ( TestTree, testGroup )
  29 import Test.Tasty.HUnit ( (@?=), testCase )
  30 import Text.XML.HXT.Core (
  31   PU,
  32   XmlPickler(..),
  33   xp4Tuple,
  34   xp6Tuple,
  35   xpElem,
  36   xpList,
  37   xpPrim,
  38   xpText,
  39   xpWrap )
  40
  41
  42 import TSN.DbImport ( DbImport(..), import_generic )
  43 import Xml ( pickle_unpickle )
  44
  45
  46 data Listing =
  47   Listing {
  48     team :: String,
  49     teamno :: Int,
  50     injuries :: String,
  51     updated :: Bool }
  52   deriving (Eq, Show)
  53
  54 data Message =
  55   Message {
  56     xml_file_id :: Int,
  57     heading :: String,
  58     category :: String,
  59     sport :: String,
  60     listings :: [Listing],
  61     time_stamp :: String }
  62   deriving (Eq, Show)
  63
  64
  65 mkPersist defaultCodegenConfig [groundhog|
  66 - entity: Listing
  67   dbName: injuries
  68 |]
  69
  70
  71 pickle_listing :: PU Listing
  72 pickle_listing =
  73   xpElem "listing" $
  74     xpWrap (from_tuple, to_tuple) $
  75     xp4Tuple (xpElem "team" xpText)
  76              (xpElem "teamno" xpPrim)
  77              (xpElem "injuries" xpText)
  78              (xpElem "updated" xpPrim)
  79   where
  80     from_tuple = uncurryN Listing
  81     to_tuple l = (team l, teamno l, injuries l, updated l)
  82
  83 instance XmlPickler Listing where
  84   xpickle = pickle_listing
  85
  86
  87 pickle_message :: PU Message
  88 pickle_message =
  89   xpElem "message" $
  90     xpWrap (from_tuple, to_tuple) $
  91     xp6Tuple (xpElem "XML_File_ID" xpPrim)
  92              (xpElem "heading" xpText)
  93              (xpElem "category" xpText)
  94              (xpElem "sport" xpText)
  95              (xpList pickle_listing)
  96              (xpElem "time_stamp" xpText)
  97   where
  98     from_tuple = uncurryN Message
  99     to_tuple m = (xml_file_id m,
 100                   heading m,
 101                   category m,
 102                   sport m,
 103                   listings m,
 104                   time_stamp m)
 105
 106 instance XmlPickler Message where
 107   xpickle = pickle_message
 108
 109
 110
 111 instance DbImport Listing where
 112   dbimport = import_generic listings
 113
 114 -- * Tasty Tests
 115 injuries_tests :: TestTree
 116 injuries_tests =
 117   testGroup
 118     "Injuries tests"
 119     [ test_pickle_of_unpickle_is_identity ]
 120
 121
 122 test_pickle_of_unpickle_is_identity :: TestTree
 123 test_pickle_of_unpickle_is_identity =
 124   testCase "pickle composed with unpickle is the identity" $ do
 125     let path = "test/xml/injuriesxml.xml"
 126     (expected :: [Message], actual) <- pickle_unpickle "message" path
 127     actual @?= expected