X-Git-Url: http://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=src%2FTSN%2FXmlImport.hs;h=2f9218af5bb54d4be13ff6ef279655afac4547cc;hb=3a8d465bcc6f36b6e7601cf1902e575171aa7beb;hp=022ddad0bb381e2976e049b671141c3bcd7642d0;hpb=e3272460a03b4bdded1902467310a4190feb333f;p=dead%2Fhtsn-import.git

diff --git a/src/TSN/XmlImport.hs b/src/TSN/XmlImport.hs
index 022ddad..2f9218a 100644
--- a/src/TSN/XmlImport.hs
+++ b/src/TSN/XmlImport.hs
@@ -4,16 +4,28 @@
 -- | Definition of the XmlImport class.
 --
 module TSN.XmlImport (
-  XmlImport(..) )
+  XmlImport(..),
+  XmlImportFk(..),
+  XmlImportFkTeams(..) )
 where
 
+-- System imports.
 import Database.Groundhog (
   AutoKey,
+  DefaultKey,
   insert,
+  insert_,
   insertByAll )
 import Database.Groundhog.Core ( PersistBackend, PersistEntity )
 
-import Xml ( FromXml(..) )
+
+-- Local imports.
+import TSN.Team ( FromXmlFkTeams(..), Team(..) )
+import Xml (
+  Child(..),
+  FromXml(..),
+  FromXmlFk(..),
+  ToDb(..) )
 
 
 -- | In Groundhog, there is a typeclass of things you can insert into
@@ -35,13 +47,17 @@ class (FromXml a, PersistEntity (Db a)) => XmlImport a where
   --   function, except the 'AutoKey' we return is for our 'Db'
   --   counterpart.
   insert_xml :: (PersistBackend m) => a ->  m (AutoKey (Db a))
-  insert_xml x = insert (from_xml x)
+  insert_xml = insert . from_xml
+
+  -- | Identical to 'insert_xml', except it doesn't return anything.
+  insert_xml_ :: (PersistBackend m) => a ->  m ()
+  insert_xml_ = insert_ . from_xml
 
   -- | Same rationale as 'insert_xml', except it uses 'insertByAll'.
   insertByAll_xml :: (PersistBackend m)
                   => a
                   -> m ( Either (AutoKey (Db a)) (AutoKey (Db a)) )
-  insertByAll_xml x = insertByAll (from_xml x)
+  insertByAll_xml = insertByAll . from_xml
 
 
   -- | Try to insert the given object and get its primary key
@@ -57,3 +73,80 @@ class (FromXml a, PersistEntity (Db a)) => XmlImport a where
   insert_xml_or_select x = do
     tmp <- insertByAll_xml x
     return $ (either id id) tmp
+
+
+
+-- | A total copy of 'XmlImport' for instances of 'FromXmlFk'.
+--
+class (Child a, FromXmlFk a, PersistEntity (Db a)) => XmlImportFk a where
+  insert_xml_fk :: (PersistBackend m)
+                => DefaultKey (Parent a)
+                -> a
+                ->  m (AutoKey (Db a))
+  insert_xml_fk fk x = insert $ from_xml_fk fk x
+
+  insert_xml_fk_ :: (PersistBackend m) => DefaultKey (Parent a) -> a -> m ()
+  insert_xml_fk_ fk x = insert_ $ from_xml_fk fk x
+
+  insertByAll_xml_fk :: (PersistBackend m)
+                     => DefaultKey (Parent a)
+                     -> a
+                     -> m ( Either (AutoKey (Db a)) (AutoKey (Db a)) )
+  insertByAll_xml_fk fk x = insertByAll $ from_xml_fk fk x
+
+  insert_xml_or_select_fk :: (PersistBackend m)
+                          => DefaultKey (Parent a)
+                          -> a
+                          -> m (AutoKey (Db a))
+  insert_xml_or_select_fk fk x = do
+    tmp <- insertByAll_xml_fk fk x
+    return $ (either id id) tmp
+
+
+-- | A total copy of 'XmlImport' for instances of 'FromXmlFkTeams'.
+--   This is a lot of duplicated boilerplate, but you don't have to
+--   think about it usually. What you're really worried about is that
+--   the dbimport code is understandable, and having these convenience
+--   classes makes the import much simpler since you don't have to do
+--   these conversions on-the-fly.
+--
+class (Child a,
+       FromXmlFkTeams a,
+       PersistEntity (Db a))
+       => XmlImportFkTeams a where
+  insert_xml_fk_teams :: (PersistBackend m)
+                      => DefaultKey (Parent a)
+                      -> DefaultKey Team -- ^ Away team FK
+                      -> DefaultKey Team -- ^ Home team FK
+                      -> a
+                      ->  m (AutoKey (Db a))
+  insert_xml_fk_teams fk fk_away fk_home x =
+    insert $ from_xml_fk_teams fk fk_away fk_home x
+
+  insert_xml_fk_teams_ :: (PersistBackend m)
+                       => DefaultKey (Parent a)
+                       -> DefaultKey Team
+                       -> DefaultKey Team
+                       -> a
+                       -> m ()
+  insert_xml_fk_teams_ fk fk_away fk_home x =
+    insert_ $ from_xml_fk_teams fk fk_away fk_home x
+
+  insertByAll_xml_fk_teams :: (PersistBackend m)
+                           => DefaultKey (Parent a)
+                           -> DefaultKey Team
+                           -> DefaultKey Team
+                           -> a
+                           -> m ( Either (AutoKey (Db a)) (AutoKey (Db a)) )
+  insertByAll_xml_fk_teams fk fk_away fk_home x =
+    insertByAll $ from_xml_fk_teams fk fk_away fk_home x
+
+  insert_xml_or_select_fk_teams :: (PersistBackend m)
+                                => DefaultKey (Parent a)
+                                -> DefaultKey Team
+                                -> DefaultKey Team
+                                -> a
+                                -> m (AutoKey (Db a))
+  insert_xml_or_select_fk_teams fk fk_away fk_home x = do
+    tmp <- insertByAll_xml_fk_teams fk fk_away fk_home x
+    return $ (either id id) tmp