DtdName(..),
FromXml(..),
FromXmlFk(..),
- FromXmlFkTeams(..),
ToDb(..),
parse_opts,
pickle_unpickle,
yes )
--- Local imports.
-import TSN.Team ( Team(..) )
-
-- | Common associated type shared by 'FromXml' and 'FromXmlFk'. This
-- basically just forces the client to define the \"database
-- | A class for XML representations which are children of other
-- elements. The foal is to associate a child XML element with its
-- parent element's database type. This is required to construct the
--- database analogue of @a@ in the 'FromXmlFk' and 'FromXmlFkTeams'
--- classes.
+-- database analogue of @a@ in 'FromXmlFk'.
--
class Child a where
-- | The type of our parent object, i.e. to the type to whom our
from_xml_fk :: DefaultKey (Parent a) -> a -> Db a
--- | A further refinement of 'FromXmlFk'. These types need not only a
--- foreign key to a parent in order to make the XML -> DB
--- conversion, but also two foreign keys to away/home teams (as
--- represented in "TSN.Team").
---
-class (Child a, ToDb a) => FromXmlFkTeams a where
- -- | The function that produces a @Db a@ out of a parent foreign
- -- key, two team foreign keys, and an @a@. The parameter order makes
- -- it easier to map this function over a bunch of things.
- from_xml_fk_teams :: DefaultKey (Parent a)
- -> DefaultKey Team -- ^ The away team FK
- -> DefaultKey Team -- ^ The home team FK
- -> a
- -> Db a
-
-- | Represents the DTD filename (\"SYSTEM\") part of the DOCTYPE
-- definition.