Ur/Web: demo/more/versioned.urs annotate

Tutorial: TLC meets type classes and modules

author	Adam Chlipala <adam@chlipala.net>
date	Sun, 17 Jul 2011 13:04:07 -0400
parents	166ea3944b91
children

rev	line source
adamc@993	1 functor Make(M : sig
adamc@993	2 con key :: {Type}
adamc@993	3 con data :: {Type}
adamc@993	4 constraint key ~ data
adamc@995	5 constraint [When, Version] ~ (key ++ data)
adamc@993	6
adamc@993	7 val key : $(map sql_injectable key)
adamc@993	8 val data : $(map (fn t => {Inj : sql_injectable_prim t,
adamc@993	9 Eq : eq t}) data)
adamc@993	10
adamc@993	11 val keyFolder : folder key
adamc@993	12 val dataFolder : folder data
adamc@993	13 end) : sig
adamc@993	14 val insert : $(M.key ++ M.data) -> transaction unit
adamc@993	15 val update : $(M.key ++ M.data) -> transaction unit
adamc@993	16
adamc@993	17 val keys : transaction (list $M.key)
adamc@993	18 val current : $M.key -> transaction (option $M.data)
adamc@995	19
adamc@995	20 type version
adamc@995	21 val keysAt : version -> transaction (list $M.key)
adamc@995	22 val archive : version -> $M.key -> transaction (option $M.data)
adamc@995	23 val updateTimes : transaction (list (version * time))
adamc@993	24 end

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