Mercurial > urweb
annotate tests/treeDyn.ur @ 2198:cf2abef213d8
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| author | Adam Chlipala <adam@chlipala.net> |
|---|---|
| date | Sat, 05 Dec 2015 12:12:40 -0500 |
| parents | aa2398e58306 |
| children |
| rev | line source |
|---|---|
| adam@1457 | 1 table t : {Id : int, Parent : option int} |
| adam@1457 | 2 |
| adam@1457 | 3 fun recurse (root : option int) = |
| adam@1457 | 4 queryX' (SELECT * FROM t WHERE {eqNullable' (SQL t.Parent) root}) |
| adam@1457 | 5 (fn r => |
| adam@1457 | 6 children <- recurse (Some r.T.Id); |
| adam@1457 | 7 (*s <- source False;*) |
| adam@1457 | 8 return <xml> |
| adam@1457 | 9 <dyn signal={(*v <- signal s; |
| adam@1457 | 10 if v then*) |
| adam@1457 | 11 return <xml><b>HI</b>{children}<b>BYE</b></xml> |
| adam@1457 | 12 (*else |
| adam@1457 | 13 return <xml/>*)}/> |
| adam@1457 | 14 </xml>) |
| adam@1457 | 15 |
| adam@1457 | 16 fun main () = |
| adam@1457 | 17 x <- recurse None; |
| adam@1457 | 18 return <xml><body>{x}</body></xml> |