Ur/Web: tests/policy.ur annotate

annotate tests/policy.ur @ 1215:360f1ed0a969

Implemented proper congruence closure, to the point where tests/policy works

author	Adam Chlipala <adamc@hcoop.net>
date	Thu, 08 Apr 2010 12:46:21 -0400
parents	648e6b087dfb
children	7dfa67560916

rev	line source
adamc@1204	1 type fruit = int
adamc@1204	2 table fruit : { Id : fruit, Nam : string, Weight : float, Secret : string }
adamc@1204	3 PRIMARY KEY Id,
adamc@1204	4 CONSTRAINT Nam UNIQUE Nam
adamc@1204	5
adamc@1204	6 type order = int
adamc@1204	7 table order : { Id : order, Fruit : fruit, Qty : int, Code : int }
adamc@1204	8 PRIMARY KEY Id,
adamc@1204	9 CONSTRAINT Fruit FOREIGN KEY Fruit REFERENCES fruit(Id)
adamc@1199	10
adamc@1207	11 (* Everyone may knows IDs and names. *)
adamc@1214	12 policy sendClient (SELECT fruit.Id, fruit.Nam
adamc@1214	13 FROM fruit)
adamc@1207	14
adamc@1207	15 (* The weight is sensitive information; you must know the secret. *)
adamc@1214	16 policy sendClient (SELECT fruit.Weight, fruit.Secret
adamc@1214	17 FROM fruit
adamc@1214	18 WHERE known(fruit.Secret))
adamc@1207	19
adamc@1214	20 policy sendClient (SELECT order.Id, order.Fruit, order.Qty
adamc@1214	21 FROM order, fruit
adamc@1214	22 WHERE order.Fruit = fruit.Id
adamc@1214	23 AND order.Qty = 13)
adamc@1200	24
adamc@1207	25 fun fname r =
adamc@1207	26 x <- queryX (SELECT fruit.Weight
adamc@1207	27 FROM fruit
adamc@1207	28 WHERE fruit.Nam = {[r.Nam]}
adamc@1210	29 AND fruit.Secret = {[r.Secret]}
adamc@1210	30 AND fruit.Weight <> 3.14
adamc@1210	31 AND fruit.Weight < 100.0
adamc@1210	32 AND fruit.Weight <= 200.1
adamc@1210	33 AND fruit.Weight > 1.23
adamc@1210	34 AND fruit.Weight >= 1.24)
adamc@1207	35 (fn r => <xml>Weight is {[r.Fruit.Weight]}</xml>);
adamc@1207	36
adamc@1207	37 return <xml><body>
adamc@1207	38 {x}
adamc@1207	39 </body></xml>
adamc@1207	40
adamc@1200	41 fun main () =
adamc@1204	42 x1 <- queryX (SELECT fruit.Id, fruit.Nam
adamc@1209	43 FROM fruit
adamc@1210	44 WHERE fruit.Nam = "apple")
adamc@1204	45 (fn x => <xml><li>{[x.Fruit.Id]}: {[x.Fruit.Nam]}</li></xml>);
adamc@1204	46
adamc@1204	47 x2 <- queryX (SELECT fruit.Nam, order.Qty
adamc@1204	48 FROM fruit, order
adamc@1206	49 WHERE fruit.Id = order.Fruit
adamc@1206	50 AND order.Qty = 13)
adamc@1204	51 (fn x => <xml><li>{[x.Fruit.Nam]}: {[x.Order.Qty]}</li></xml>);
adamc@1200	52
adamc@1200	53 return <xml><body>
adamc@1204	54 <ul>{x1}</ul>
adamc@1210	55
adamc@1204	56 <ul>{x2}</ul>
adamc@1207	57
adamc@1207	58 <form>
adamc@1207	59 Fruit name: <textbox{#Nam}/><br/>
adamc@1207	60 Secret: <textbox{#Secret}/><br/>
adamc@1207	61 <submit action={fname}/>
adamc@1207	62 </form>
adamc@1200	63 </body></xml>

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