Ur/Web: demo/outer.ur annotate

Introduced the known() predicate

author	Adam Chlipala <adamc@hcoop.net>
date	Tue, 06 Apr 2010 09:51:36 -0400
parents	87a7702d681d
children

rev	line source
adamc@777	1 table t : { Id : int, B : string }
adamc@777	2 PRIMARY KEY Id
adamc@777	3
adamc@777	4 table u : { Id : int, Link : int, C : string, D : option float }
adamc@777	5 PRIMARY KEY Id,
adamc@777	6 CONSTRAINT Link FOREIGN KEY Link REFERENCES t(Id)
adamc@777	7
adamc@777	8 fun main () =
adamc@777	9 xml <- queryX (SELECT t.Id, t.B, u.Id, u.C, u.D
adamc@777	10 FROM t LEFT JOIN u ON t.Id = u.Link)
adamc@777	11 (fn r => <xml><tr>
adamc@777	12 <td>{[r.T.Id]}</td>
adamc@777	13 <td>{[r.T.B]}</td>
adamc@777	14 <td>{[r.U.Id]}</td>
adamc@777	15 <td>{[r.U.C]}</td>
adamc@777	16 <td>{[r.U.D]}</td>
adamc@777	17 </tr></xml>);
adamc@777	18 return <xml><body>
adamc@777	19 <table>{xml}</table>
adamc@777	20
adamc@777	21 <form>Insert into t: <textbox{#Id} size={5}/> <textbox{#B} size={5}/>
adamc@777	22 <submit action={addT}/></form>
adamc@777	23 <form>
adamc@777	24 Insert into u: <textbox{#Id} size={5}/> <textbox{#Link} size={5}/> <textbox{#C} size={5}/>
adamc@777	25 <textbox{#D} size={5}/> <submit action={addU}/>
adamc@777	26 </form>
adamc@777	27 </body></xml>
adamc@777	28
adamc@777	29 and addT r =
adamc@777	30 dml (INSERT INTO t (Id, B) VALUES ({[readError r.Id]}, {[r.B]}));
adamc@777	31 main ()
adamc@777	32
adamc@777	33 and addU r =
adamc@777	34 dml (INSERT INTO u (Id, Link, C, D) VALUES ({[readError r.Id]}, {[readError r.Link]}, {[r.C]}, {[readError r.D]}));
adamc@777	35 main ()

Mercurial > urweb