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view tests/policy2.ur @ 1892:907a82a44f01

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Add missing inter-library dependencies This is needed, at least on recent Ubuntu, to fix these linker errors when compiling any Ur/Web application: liburweb.so: undefined reference to `lround' liburweb.so: undefined reference to `ceil' liburweb.so: undefined reference to `RAND_bytes' liburweb.so: undefined reference to `DES_fcrypt' liburweb.so: undefined reference to `SHA256_Init' liburweb.so: undefined reference to `SHA256_Final' liburweb.so: undefined reference to `SHA256_Update' Signed-off-by: Anders Kaseorg <andersk@mit.edu> --- src/c/Makefile.am | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)
author Anders Kaseorg <andersk@mit.edu>
date Thu, 21 Nov 2013 14:32:11 -0500
parents d5ecceb7d1a1
children
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type fruit = int
table fruit : { Id : fruit, Nam : string, Weight : float, Secret : string }
  PRIMARY KEY Id,
  CONSTRAINT Nam UNIQUE Nam

(* Everyone may knows IDs and names. *)
policy sendClient (SELECT fruit.Id, fruit.Nam
                   FROM fruit)

(* The weight is sensitive information; you must know the secret. *)
policy sendClient (SELECT fruit.Weight, fruit.Secret
                   FROM fruit
                   WHERE known(fruit.Secret))

fun main () =
    x1 <- queryX (SELECT fruit.Id, fruit.Nam
                  FROM fruit
                  WHERE fruit.Nam = "apple")
                 (fn x => <xml><li>{[x.Fruit.Id]}: {[x.Fruit.Nam]}</li></xml>);
    return <xml><body>
      <ul>{x1}</ul>
    </body></xml>