Ur/Web: demo/batchFun.urs annotate

Deal with Postgres's wonky type-changing for nullable columns of views

author	Adam Chlipala <adam@chlipala.net>
date	Fri, 25 Feb 2011 15:46:29 -0500
parents	bb3fc575cfe7
children

rev	line source
adamc@1002	1 con colMeta = fn (db :: Type, state :: Type) =>
adamc@650	2 {Nam : string,
adamc@1002	3 Show : db -> xbody,
adamc@1002	4 Inject : sql_injectable db,
adamc@650	5
adamc@1002	6 NewState : transaction state,
adamc@1002	7 Widget : state -> xbody,
adamc@1002	8 ReadState : state -> transaction db}
adamc@650	9 con colsMeta = fn cols :: {(Type * Type)} => $(map colMeta cols)
adamc@650	10
adamc@650	11 val int : string -> colMeta (int, source string)
adamc@650	12 val float : string -> colMeta (float, source string)
adamc@650	13 val string : string -> colMeta (string, source string)
adamc@650	14
adamc@650	15 functor Make(M : sig
adamc@650	16 con cols :: {(Type * Type)}
adamc@650	17 constraint [Id] ~ cols
adamc@650	18 val fl : folder cols
adamc@650	19
adamc@706	20 table tab : ([Id = int] ++ map fst cols)
adamc@650	21
adamc@650	22 val title : string
adamc@650	23
adamc@650	24 val cols : colsMeta cols
adamc@650	25 end) : sig
adamc@650	26 val main : unit -> transaction page
adamc@650	27 end

Mercurial > urweb