Mercurial > urweb
annotate tests/dbupload.ur @ 2082:1b76ae703cbb
Some more optimization of string expressions showing up in JSON generation (Meta library)
| author | Adam Chlipala <adam@chlipala.net> |
|---|---|
| date | Wed, 03 Dec 2014 21:06:15 -0500 |
| parents | 216a3a67ebe3 |
| children |
| rev | line source |
|---|---|
| adam@1867 | 1 table t : { Id : int, Blob : blob, MimeType : string } |
| adam@1867 | 2 sequence s |
| adam@1867 | 3 |
| adam@1867 | 4 fun getImage id : transaction page = |
| adam@1867 | 5 r <- oneRow1 (SELECT t.Blob, t.MimeType |
| adam@1867 | 6 FROM t |
| adam@1867 | 7 WHERE t.Id = {[id]}); |
| adam@1867 | 8 returnBlob r.Blob (blessMime r.MimeType) |
| adam@1867 | 9 |
| adam@1867 | 10 fun main () : transaction page = |
| adam@1867 | 11 let |
| adam@1867 | 12 fun handle r = |
| adam@1867 | 13 id <- nextval s; |
| adam@1867 | 14 dml (INSERT INTO t (Id, Blob, MimeType) |
| adam@1867 | 15 VALUES ({[id]}, {[fileData r.File]}, {[fileMimeType r.File]})); |
| adam@1867 | 16 main () |
| adam@1867 | 17 in |
| adam@1867 | 18 x <- queryX1 (SELECT t.Id FROM t) |
| adam@1867 | 19 (fn r => <xml><img src={url (getImage r.Id)}/><br/></xml>); |
| adam@1867 | 20 return <xml><body> |
| adam@1867 | 21 <form><upload{#File}/> <submit action={handle}/></form> |
| adam@1867 | 22 <hr/> |
| adam@1867 | 23 {x} |
| adam@1867 | 24 </body></xml> |
| adam@1867 | 25 end |