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Initial support for char in SQL
author Adam Chlipala <adamc@hcoop.net>
date Thu, 22 Oct 2009 16:15:56 -0400
parents 6b0f3853cc81
children 32dbb5636ae7
rev   line source
adamc@1004 1 open Meta
adamc@1001 2
adamc@1001 3 functor Make(M : sig
adamc@1003 4 con paper :: {(Type * Type)}
adamc@1010 5 constraint [Id, Document, Authors] ~ paper
adamc@1003 6 val paper : $(map meta paper)
adamc@1007 7 val paperFolder : folder paper
adamc@1003 8
adamc@1001 9 con review :: {(Type * Type)}
adamc@1003 10 constraint [Paper, User] ~ review
adamc@1003 11 val review : $(map meta review)
adamc@1011 12 val reviewFolder : folder review
adamc@1006 13
adamc@1006 14 val submissionDeadline : time
adamc@1009 15 val summarizePaper : $(map fst paper) -> xbody
adamc@1001 16 end) = struct
adamc@1001 17
adamc@1003 18 table user : {Id : int, Nam : string, Password : string, Chair : bool, OnPc : bool}
adamc@1003 19 PRIMARY KEY Id,
adamc@1003 20 CONSTRAINT Nam UNIQUE Nam
adamc@1003 21 sequence userId
adamc@1003 22
adamc@1008 23 con paper = [Id = int, Document = blob] ++ map fst M.paper
adamc@1003 24 table paper : paper
adamc@1003 25 PRIMARY KEY Id
adamc@1003 26 sequence paperId
adamc@1003 27
adamc@1010 28 table authorship : {Paper : int, User : int}
adamc@1010 29 PRIMARY KEY (Paper, User),
adamc@1011 30 CONSTRAINT Paper FOREIGN KEY Paper REFERENCES paper(Id) ON DELETE CASCADE,
adamc@1010 31 CONSTRAINT User FOREIGN KEY User REFERENCES user(Id)
adamc@1010 32
adamc@1003 33 con review = [Paper = int, User = int] ++ map fst M.review
adamc@1003 34 table review : review
adamc@1003 35 PRIMARY KEY (Paper, User),
adamc@1003 36 CONSTRAINT Paper FOREIGN KEY Paper REFERENCES paper(Id),
adamc@1003 37 CONSTRAINT User FOREIGN KEY User REFERENCES user(Id)
adamc@1003 38 sequence reviewId
adamc@1003 39
adamc@1003 40 cookie login : {Id : int, Password : string}
adamc@1003 41
adamc@1004 42 val checkLogin =
adamc@1003 43 r <- getCookie login;
adamc@1003 44 case r of
adamc@1003 45 None => return None
adamc@1003 46 | Some r =>
adamc@1003 47 oneOrNoRows1 (SELECT user.Id, user.Nam, user.Chair, user.OnPc
adamc@1003 48 FROM user
adamc@1003 49 WHERE user.Id = {[r.Id]}
adamc@1003 50 AND user.Password = {[r.Password]})
adamc@1003 51
adamc@1010 52 val getLogin =
adamc@1010 53 ro <- checkLogin;
adamc@1010 54 case ro of
adamc@1010 55 None => error <xml>You must be logged in to do that.</xml>
adamc@1010 56 | Some r => return r
adamc@1010 57
adamc@1009 58 fun checkPaper id =
adamc@1010 59 r <- getLogin;
adamc@1010 60 if r.OnPc then
adamc@1009 61 return ()
adamc@1009 62 else
adamc@1010 63 error <xml>You aren't authorized to see that paper.</xml>
adamc@1009 64
adamc@1004 65 structure Users = BulkEdit.Make(struct
adamc@1004 66 con keyName = #Id
adamc@1004 67 val visible = {Nam = string "Name",
adamc@1004 68 Chair = bool "Chair?",
adamc@1004 69 OnPc = bool "On PC?"}
adamc@1004 70
adamc@1004 71 val title = "Users"
adamc@1004 72 val isAllowed =
adamc@1004 73 me <- checkLogin;
adamc@1004 74 return (Option.isSome me)
adamc@1004 75
adamc@1004 76 val t = user
adamc@1004 77 end)
adamc@1004 78
adamc@1010 79 datatype dnat = O | S of source dnat
adamc@1010 80 type dnatS = source dnat
adamc@1010 81
adamc@1010 82 fun inc n =
adamc@1010 83 v <- get n;
adamc@1010 84 case v of
adamc@1010 85 O =>
adamc@1010 86 n' <- source O;
adamc@1010 87 set n (S n')
adamc@1010 88 | S n => inc n
adamc@1010 89
adamc@1010 90 fun dec n =
adamc@1010 91 let
adamc@1010 92 fun dec' last n =
adamc@1010 93 v <- get n;
adamc@1010 94 case v of
adamc@1010 95 O => (case last of
adamc@1010 96 None => return ()
adamc@1010 97 | Some n' => set n' O)
adamc@1010 98 | S n' => dec' (Some n) n'
adamc@1010 99 in
adamc@1010 100 dec' None n
adamc@1010 101 end
adamc@1004 102
adamc@1003 103 fun doRegister r =
adamc@1003 104 n <- oneRowE1 (SELECT COUNT( * ) AS N
adamc@1003 105 FROM user
adamc@1003 106 WHERE user.Nam = {[r.Nam]});
adamc@1003 107 if n > 0 then
adamc@1003 108 register (Some "Sorry; that username is taken.")
adamc@1003 109 else
adamc@1003 110 id <- nextval userId;
adamc@1003 111 dml (INSERT INTO user (Id, Nam, Password, Chair, OnPc)
adamc@1003 112 VALUES ({[id]}, {[r.Nam]}, {[r.Password]}, FALSE, FALSE));
adamc@1003 113 setCookie login {Id = id, Password = r.Password};
adamc@1003 114 main ()
adamc@1003 115
adamc@1003 116 and register msg = return <xml><body>
adamc@1003 117 <h1>Registering a New Account</h1>
adamc@1003 118
adamc@1003 119 {case msg of
adamc@1003 120 None => <xml/>
adamc@1003 121 | Some msg => <xml><div>{[msg]}</div></xml>}
adamc@1003 122
adamc@1003 123 <form><table>
adamc@1003 124 <tr> <th>Username:</th> <td><textbox{#Nam}/></td> </tr>
adamc@1003 125 <tr> <th>Password:</th> <td><password{#Password}/></td> </tr>
adamc@1003 126 <tr> <th><submit action={doRegister}/></th> </tr>
adamc@1003 127 </table></form>
adamc@1003 128 </body></xml>
adamc@1003 129
adamc@1006 130 and signin r =
adamc@1006 131 ro <- oneOrNoRowsE1 (SELECT user.Id AS N
adamc@1006 132 FROM user
adamc@1006 133 WHERE user.Nam = {[r.Nam]}
adamc@1006 134 AND user.Password = {[r.Password]});
adamc@1006 135 (case ro of
adamc@1006 136 None => return ()
adamc@1006 137 | Some id => setCookie login {Id = id, Password = r.Password});
adamc@1006 138 m <- main' ();
adamc@1006 139 return <xml><body>
adamc@1006 140 {case ro of
adamc@1006 141 None => <xml><div>Invalid username or password.</div></xml>
adamc@1006 142 | _ => <xml/>}
adamc@1006 143
adamc@1006 144 {m}
adamc@1006 145 </body></xml>
adamc@1006 146
adamc@1006 147 and main' () =
adamc@1004 148 me <- checkLogin;
adamc@1006 149 now <- now;
adamc@1006 150 return <xml><ul>
adamc@1003 151 {case me of
adamc@1006 152 None => <xml>
adamc@1006 153 <li><a link={register None}>Register for access</a></li>
adamc@1006 154 <li><b>Log in:</b> <form><table>
adamc@1006 155 <tr> <th>Username:</th> <td><textbox{#Nam}/></td> </tr>
adamc@1006 156 <tr> <th>Password:</th> <td><password{#Password}/></td> </tr>
adamc@1006 157 <tr> <th><submit value="Log in" action={signin}/></th> </tr>
adamc@1006 158 </table></form></li>
adamc@1006 159 </xml>
adamc@1004 160 | Some me => <xml>
adamc@1004 161 <div>Welcome, {[me.Nam]}!</div>
adamc@1004 162
adamc@1004 163 {if me.Chair then
adamc@1004 164 <xml><li><a link={Users.main ()}>Manage users</a></li></xml>
adamc@1004 165 else
adamc@1004 166 <xml/>}
adamc@1006 167
adamc@1009 168 {if me.OnPc then
adamc@1009 169 <xml><li><a link={all ()}>All papers</a></li></xml>
adamc@1009 170 else
adamc@1009 171 <xml/>}
adamc@1009 172
adamc@1006 173 {if now < M.submissionDeadline then
adamc@1007 174 <xml><li><a link={submit ()}>Submit</a></li></xml>
adamc@1006 175 else
adamc@1006 176 <xml/>}
adamc@1004 177 </xml>}
adamc@1006 178 </ul></xml>
adamc@1006 179
adamc@1006 180 and main () =
adamc@1006 181 m <- main' ();
adamc@1006 182 return <xml><body>{m}</body></xml>
adamc@1001 183
adamc@1008 184 and submit () =
adamc@1008 185 let
adamc@1009 186 fun doSubmit r =
adamc@1010 187 me <- getLogin;
adamc@1010 188 coauthors <- List.mapM (fn name => oneOrNoRowsE1 (SELECT user.Id AS N
adamc@1010 189 FROM user
adamc@1010 190 WHERE user.Nam = {[name.Nam]})) r.Authors;
adamc@1010 191 if List.exists Option.isNone coauthors then
adamc@1010 192 error <xml>At least one of those coauthor usernames isn't registered.</xml>
adamc@1010 193 else
adamc@1010 194 id <- nextval paperId;
adamc@1010 195 dml (insert paper ({Id = sql_inject id, Document = sql_inject (fileData r.Document)}
adamc@1010 196 ++ ensql M.paper (r -- #Authors -- #Document) M.paperFolder));
adamc@1010 197 List.app (fn uid =>
adamc@1010 198 case uid of
adamc@1010 199 None => error <xml>Impossible empty uid!</xml>
adamc@1010 200 | Some uid => dml (INSERT INTO authorship (Paper, User)
adamc@1010 201 VALUES ({[id]}, {[uid]})))
adamc@1010 202 (Some me.Id :: coauthors);
adamc@1010 203 return <xml><body>
adamc@1010 204 Thanks for submitting!
adamc@1010 205 </body></xml>
adamc@1010 206
adamc@1010 207 fun authorBlanks n =
adamc@1010 208 case n of
adamc@1010 209 O => <xml/>
adamc@1010 210 | S n => <xml>
adamc@1010 211 <entry><b>Author:</b> <textbox{#Nam}/><br/></entry>
adamc@1010 212 <dyn signal={authorBlanksS n}/>
adamc@1010 213 </xml>
adamc@1010 214
adamc@1010 215 and authorBlanksS n =
adamc@1010 216 n <- signal n;
adamc@1010 217 return (authorBlanks n)
adamc@1008 218 in
adamc@1010 219 me <- getLogin;
adamc@1010 220 numAuthors <- source O;
adamc@1010 221
adamc@1008 222 return <xml><body>
adamc@1008 223 <h1>Submit a Paper</h1>
adamc@1008 224
adamc@1008 225 <form>
adamc@1010 226 <b>Author:</b> {[me.Nam]}<br/>
adamc@1010 227 <subforms{#Authors}>
adamc@1010 228 <dyn signal={authorBlanksS numAuthors}/>
adamc@1010 229 </subforms>
adamc@1010 230 <button value="Add author" onclick={inc numAuthors}/><br/>
adamc@1010 231 <button value="Remove author" onclick={dec numAuthors}/><br/>
adamc@1010 232 <br/>
adamc@1010 233
adamc@1010 234 {useMore (allWidgets M.paper M.paperFolder)}
adamc@1008 235 <b>Paper:</b> <upload{#Document}/><br/>
adamc@1008 236 <submit value="Submit" action={doSubmit}/>
adamc@1008 237 </form>
adamc@1008 238 </body></xml>
adamc@1008 239 end
adamc@1007 240
adamc@1009 241 and all () =
adamc@1009 242 ps <- queryX (SELECT paper.Id, paper.{{map fst M.paper}} FROM paper)
adamc@1009 243 (fn r => <xml><li><a link={one r.Paper.Id}>{M.summarizePaper (r.Paper -- #Id)}</a></li></xml>);
adamc@1009 244 return <xml><body>
adamc@1009 245 <h1>All Papers</h1>
adamc@1009 246
adamc@1009 247 <ul>
adamc@1009 248 {ps}
adamc@1009 249 </ul>
adamc@1009 250 </body></xml>
adamc@1009 251
adamc@1009 252 and one id =
adamc@1011 253 me <- getLogin;
adamc@1009 254 checkPaper id;
adamc@1009 255 ro <- oneOrNoRows (SELECT paper.{{map fst M.paper}}, octet_length(paper.Document) AS N
adamc@1009 256 FROM paper
adamc@1009 257 WHERE paper.Id = {[id]});
adamc@1010 258 authors <- queryX (SELECT user.Nam
adamc@1010 259 FROM authorship
adamc@1010 260 JOIN user ON authorship.User = user.Id
adamc@1010 261 WHERE authorship.Paper = {[id]})
adamc@1010 262 (fn r => <xml><li>{[r.User.Nam]}</li></xml>);
adamc@1011 263 myReview <- oneOrNoRows1 (SELECT review.{{map fst M.review}}
adamc@1011 264 FROM review
adamc@1011 265 WHERE review.User = {[me.Id]}
adamc@1011 266 AND review.Paper = {[id]});
adamc@1009 267 case ro of
adamc@1009 268 None => error <xml>Paper not found!</xml>
adamc@1009 269 | Some r => return <xml><body>
adamc@1009 270 <h1>Paper #{[id]}</h1>
adamc@1009 271
adamc@1010 272 <h3>Authors:</h3>
adamc@1010 273 <ul>
adamc@1010 274 {authors}
adamc@1010 275 </ul>
adamc@1010 276
adamc@1009 277 {allContent M.paper r.Paper M.paperFolder}<br/>
adamc@1009 278
adamc@1009 279 {if r.N = 0 then
adamc@1009 280 <xml><div>No paper uploaded yet.</div></xml>
adamc@1009 281 else
adamc@1009 282 <xml><a link={download id}>Download paper</a> ({[r.N]} bytes)</xml>}
adamc@1011 283
adamc@1011 284 <hr/>
adamc@1011 285
adamc@1011 286 {case myReview of
adamc@1011 287 None => <xml>
adamc@1011 288 <h2>Add Your Review</h2>
adamc@1011 289
adamc@1011 290 <form>
adamc@1011 291 {allWidgets M.review M.reviewFolder}
adamc@1011 292 </form>
adamc@1011 293 </xml>
adamc@1011 294 | Some myReview => <xml>
adamc@1011 295 <h2>Edit Your Review</h2>
adamc@1011 296
adamc@1011 297 <form>
adamc@1011 298 {allPopulated M.review myReview M.reviewFolder}
adamc@1011 299 </form>
adamc@1011 300 </xml>}
adamc@1009 301 </body></xml>
adamc@1009 302
adamc@1009 303 and download id =
adamc@1009 304 checkPaper id;
adamc@1009 305 ro <- oneOrNoRows (SELECT paper.Document
adamc@1009 306 FROM paper
adamc@1009 307 WHERE paper.Id = {[id]});
adamc@1009 308 case ro of
adamc@1009 309 None => error <xml>Paper not found!</xml>
adamc@1009 310 | Some r => returnBlob r.Paper.Document (blessMime "application/pdf")
adamc@1009 311
adamc@1001 312 end