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annotate demo/sql.ur @ 1521:001638622c4f

A few error message improvements

author	Adam Chlipala <adam@chlipala.net>
date	Tue, 02 Aug 2011 13:48:26 -0400
parents	5819fb63c93a
children

rev	line source
adamc@410	1 table t : { A : int, B : float, C : string, D : bool }
adamc@708	2 PRIMARY KEY A
adamc@410	3
adamc@410	4 fun list () =
adamc@410	5 rows <- queryX (SELECT * FROM t)
adamc@410	6 (fn row => <xml><tr>
adamc@410	7 <td>{[row.T.A]}</td> <td>{[row.T.B]}</td> <td>{[row.T.C]}</td> <td>{[row.T.D]}</td>
adamc@732	8 <td><form><submit action={delete row.T.A} value="Delete"/></form></td>
adamc@410	9 </tr></xml>);
adamc@410	10 return <xml>
adamc@410	11 <table border=1>
adamc@410	12 <tr> <th>A</th> <th>B</th> <th>C</th> <th>D</th> </tr>
adamc@410	13 {rows}
adamc@410	14 </table>
adamc@410	15
adamc@410	16 <br/><hr/><br/>
adamc@410	17
adamc@410	18 <form>
adamc@410	19 <table>
adamc@410	20 <tr> <th>A:</th> <td><textbox{#A}/></td> </tr>
adamc@410	21 <tr> <th>B:</th> <td><textbox{#B}/></td> </tr>
adamc@410	22 <tr> <th>C:</th> <td><textbox{#C}/></td> </tr>
adamc@410	23 <tr> <th>D:</th> <td><checkbox{#D}/></td> </tr>
adamc@410	24 <tr> <th/> <td><submit action={add} value="Add Row"/></td> </tr>
adamc@410	25 </table>
adamc@410	26 </form>
adamc@410	27 </xml>
adamc@410	28
adamc@410	29 and add r =
adamc@434	30 dml (INSERT INTO t (A, B, C, D)
adamc@471	31 VALUES ({[readError r.A]}, {[readError r.B]}, {[r.C]}, {[r.D]}));
adamc@410	32 xml <- list ();
adamc@410	33 return <xml><body>
adamc@410	34 <p>Row added.</p>
adamc@410	35
adamc@410	36 {xml}
adamc@410	37 </body></xml>
adamc@410	38
adamc@732	39 and delete a () =
adamc@434	40 dml (DELETE FROM t
adamc@471	41 WHERE t.A = {[a]});
adamc@410	42 xml <- list ();
adamc@410	43 return <xml><body>
adamc@410	44 <p>Row deleted.</p>
adamc@410	45
adamc@410	46 {xml}
adamc@410	47 </body></xml>
adamc@410	48
adamc@410	49 fun main () =
adamc@410	50 xml <- list ();
adamc@410	51 return <xml><body>
adamc@410	52 {xml}
adamc@410	53 </body></xml>

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