| 1 | structure Link :> LINK = |
| 2 | struct |
| 3 | |
| 4 | open Util Sql Init |
| 5 | |
| 6 | type link = {id : int, usr : int, title : string, url : string, descr : string} |
| 7 | |
| 8 | fun mkLinkRow [id, usr, title, url, descr] = |
| 9 | {id = C.intFromSql id, usr = C.intFromSql usr, title = C.stringFromSql title, |
| 10 | url = C.stringFromSql url, descr = C.stringFromSql descr} |
| 11 | | mkLinkRow row = rowError ("link", row) |
| 12 | |
| 13 | fun lookupLink id = |
| 14 | mkLinkRow (C.oneRow (getDb ()) ($`SELECT id, usr, title, url, descr |
| 15 | FROM Link |
| 16 | WHERE id = ^(C.intToSql id)`)) |
| 17 | |
| 18 | fun mkLinkRow' (name :: rest) = (C.stringFromSql name, mkLinkRow rest) |
| 19 | | mkLinkRow' row = Init.rowError ("user'", row) |
| 20 | |
| 21 | fun listLinks () = |
| 22 | C.map (getDb ()) mkLinkRow' ($`SELECT name, Link.id, usr, title, url, descr |
| 23 | FROM Link JOIN WebUser ON usr = WebUser.id |
| 24 | ORDER BY title`) |
| 25 | |
| 26 | fun listUserLinks usr = |
| 27 | C.map (getDb ()) mkLinkRow ($`SELECT id, usr, title, url, descr |
| 28 | FROM Link |
| 29 | WHERE usr = ^(C.intToSql usr) |
| 30 | ORDER BY title`) |
| 31 | |
| 32 | fun addLink (usr, title, url, descr) = |
| 33 | let |
| 34 | val db = getDb () |
| 35 | val id = nextSeq (db, "LinkSeq") |
| 36 | in |
| 37 | C.dml db ($`INSERT INTO Link (id, usr, title, url, descr) |
| 38 | VALUES (^(C.intToSql id), ^(C.intToSql usr), ^(C.stringToSql title), ^(C.stringToSql url), ^(C.stringToSql descr))`); |
| 39 | id |
| 40 | end |
| 41 | |
| 42 | fun modLink (link : link) = |
| 43 | let |
| 44 | val db = getDb () |
| 45 | in |
| 46 | ignore (C.dml db ($`UPDATE Link SET |
| 47 | usr = ^(C.intToSql (#usr link)), title = ^(C.stringToSql (#title link)), |
| 48 | url = ^(C.stringToSql (#url link)), descr = ^(C.stringToSql (#descr link)) |
| 49 | WHERE id = ^(C.intToSql (#id link))`)) |
| 50 | end |
| 51 | |
| 52 | fun deleteLink id = |
| 53 | ignore (C.dml (getDb ()) ($`DELETE FROM Link WHERE id = ^(C.intToSql id)`)) |
| 54 | |
| 55 | end |