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MySQL demo/sql succeeds in reading no rows
author Adam Chlipala <adamc@hcoop.net>
date Sun, 12 Jul 2009 15:05:40 -0400
parents 41971801b62d
children c50101ddf7fa
rev   line source
adamc@866 1 (* Copyright (c) 2008-2009, Adam Chlipala
adamc@866 2 * All rights reserved.
adamc@866 3 *
adamc@866 4 * Redistribution and use in source and binary forms, with or without
adamc@866 5 * modification, are permitted provided that the following conditions are met:
adamc@866 6 *
adamc@866 7 * - Redistributions of source code must retain the above copyright notice,
adamc@866 8 * this list of conditions and the following disclaimer.
adamc@866 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@866 10 * this list of conditions and the following disclaimer in the documentation
adamc@866 11 * and/or other materials provided with the distribution.
adamc@866 12 * - The names of contributors may not be used to endorse or promote products
adamc@866 13 * derived from this software without specific prior written permission.
adamc@866 14 *
adamc@866 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@866 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@866 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@866 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@866 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@866 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@866 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@866 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@866 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@866 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@866 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@866 26 *)
adamc@866 27
adamc@866 28 structure MySQL :> MYSQL = struct
adamc@866 29
adamc@866 30 open Settings
adamc@866 31 open Print.PD
adamc@866 32 open Print
adamc@866 33
adamc@873 34 fun p_sql_type t =
adamc@873 35 case t of
adamc@873 36 Int => "bigint"
adamc@873 37 | Float => "double"
adamc@873 38 | String => "longtext"
adamc@873 39 | Bool => "bool"
adamc@873 40 | Time => "timestamp"
adamc@873 41 | Blob => "longblob"
adamc@873 42 | Channel => "bigint"
adamc@873 43 | Client => "int"
adamc@873 44 | Nullable t => p_sql_type t
adamc@873 45
adamc@873 46 fun p_buffer_type t =
adamc@873 47 case t of
adamc@873 48 Int => "MYSQL_TYPE_LONGLONG"
adamc@873 49 | Float => "MYSQL_TYPE_DOUBLE"
adamc@873 50 | String => "MYSQL_TYPE_STRING"
adamc@873 51 | Bool => "MYSQL_TYPE_LONG"
adamc@873 52 | Time => "MYSQL_TYPE_TIME"
adamc@873 53 | Blob => "MYSQL_TYPE_BLOB"
adamc@873 54 | Channel => "MYSQL_TYPE_LONGLONG"
adamc@873 55 | Client => "MYSQL_TYPE_LONG"
adamc@873 56 | Nullable t => p_buffer_type t
adamc@873 57
adamc@874 58 fun p_sql_type_base t =
adamc@874 59 case t of
adamc@874 60 Int => "bigint"
adamc@874 61 | Float => "double"
adamc@874 62 | String => "longtext"
adamc@874 63 | Bool => "tinyint"
adamc@874 64 | Time => "timestamp"
adamc@874 65 | Blob => "longblob"
adamc@874 66 | Channel => "bigint"
adamc@874 67 | Client => "int"
adamc@874 68 | Nullable t => p_sql_type_base t
adamc@874 69
adamc@874 70 val ident = String.translate (fn #"'" => "PRIME"
adamc@874 71 | ch => str ch)
adamc@874 72
adamc@874 73 fun checkRel (table, checkNullable) (s, xts) =
adamc@874 74 let
adamc@874 75 val sl = CharVector.map Char.toLower s
adamc@874 76
adamc@874 77 val q = "SELECT COUNT(*) FROM information_schema." ^ table ^ " WHERE table_name = '"
adamc@874 78 ^ sl ^ "'"
adamc@874 79
adamc@874 80 val q' = String.concat ["SELECT COUNT(*) FROM information_schema.columns WHERE table_name = '",
adamc@874 81 sl,
adamc@874 82 "' AND (",
adamc@874 83 String.concatWith " OR "
adamc@874 84 (map (fn (x, t) =>
adamc@874 85 String.concat ["(column_name = 'uw_",
adamc@874 86 CharVector.map
adamc@874 87 Char.toLower (ident x),
adamc@874 88 "' AND data_type = '",
adamc@874 89 p_sql_type_base t,
adamc@874 90 "'",
adamc@874 91 if checkNullable then
adamc@874 92 (" AND is_nullable = '"
adamc@874 93 ^ (if isNotNull t then
adamc@874 94 "NO"
adamc@874 95 else
adamc@874 96 "YES")
adamc@874 97 ^ "'")
adamc@874 98 else
adamc@874 99 "",
adamc@874 100 ")"]) xts),
adamc@874 101 ")"]
adamc@874 102
adamc@874 103 val q'' = String.concat ["SELECT COUNT(*) FROM information_schema.columns WHERE table_name = '",
adamc@874 104 sl,
adamc@874 105 "' AND column_name LIKE 'uw_%'"]
adamc@874 106 in
adamc@874 107 box [string "if (mysql_query(conn->conn, \"",
adamc@874 108 string q,
adamc@874 109 string "\")) {",
adamc@874 110 newline,
adamc@874 111 box [string "mysql_close(conn->conn);",
adamc@874 112 newline,
adamc@874 113 string "uw_error(ctx, FATAL, \"Query failed:\\n",
adamc@874 114 string q,
adamc@874 115 string "\");",
adamc@874 116 newline],
adamc@874 117 string "}",
adamc@874 118 newline,
adamc@874 119 newline,
adamc@874 120
adamc@874 121 string "if ((res = mysql_store_result(conn->conn)) == NULL) {",
adamc@874 122 newline,
adamc@874 123 box [string "mysql_free_result(res);",
adamc@874 124 newline,
adamc@874 125 string "mysql_close(conn->conn);",
adamc@874 126 newline,
adamc@874 127 string "uw_error(ctx, FATAL, \"Result store failed:\\n",
adamc@874 128 string q,
adamc@874 129 string "\");",
adamc@874 130 newline],
adamc@874 131 string "}",
adamc@874 132 newline,
adamc@874 133 newline,
adamc@874 134
adamc@874 135 string "if (mysql_num_fields(res) != 1) {",
adamc@874 136 newline,
adamc@874 137 box [string "mysql_free_result(res);",
adamc@874 138 newline,
adamc@874 139 string "mysql_close(conn->conn);",
adamc@874 140 newline,
adamc@874 141 string "uw_error(ctx, FATAL, \"Bad column count:\\n",
adamc@874 142 string q,
adamc@874 143 string "\");",
adamc@874 144 newline],
adamc@874 145 string "}",
adamc@874 146 newline,
adamc@874 147 newline,
adamc@874 148
adamc@874 149 string "if ((row = mysql_fetch_row(res)) == NULL) {",
adamc@874 150 newline,
adamc@874 151 box [string "mysql_free_result(res);",
adamc@874 152 newline,
adamc@874 153 string "mysql_close(conn->conn);",
adamc@874 154 newline,
adamc@874 155 string "uw_error(ctx, FATAL, \"Row fetch failed:\\n",
adamc@874 156 string q,
adamc@874 157 string "\");",
adamc@874 158 newline],
adamc@874 159 string "}",
adamc@874 160 newline,
adamc@874 161 newline,
adamc@874 162
adamc@874 163 string "if (strcmp(row[0], \"1\")) {",
adamc@874 164 newline,
adamc@874 165 box [string "mysql_free_result(res);",
adamc@874 166 newline,
adamc@874 167 string "mysql_close(conn->conn);",
adamc@874 168 newline,
adamc@874 169 string "uw_error(ctx, FATAL, \"Table '",
adamc@874 170 string s,
adamc@874 171 string "' does not exist.\");",
adamc@874 172 newline],
adamc@874 173 string "}",
adamc@874 174 newline,
adamc@874 175 newline,
adamc@874 176 string "mysql_free_result(res);",
adamc@874 177 newline,
adamc@874 178 newline,
adamc@874 179
adamc@874 180 string "if (mysql_query(conn->conn, \"",
adamc@874 181 string q',
adamc@874 182 string "\")) {",
adamc@874 183 newline,
adamc@874 184 box [string "mysql_close(conn->conn);",
adamc@874 185 newline,
adamc@874 186 string "uw_error(ctx, FATAL, \"Query failed:\\n",
adamc@874 187 string q',
adamc@874 188 string "\");",
adamc@874 189 newline],
adamc@874 190 string "}",
adamc@874 191 newline,
adamc@874 192 newline,
adamc@874 193
adamc@874 194 string "if ((res = mysql_store_result(conn->conn)) == NULL) {",
adamc@874 195 newline,
adamc@874 196 box [string "mysql_free_result(res);",
adamc@874 197 newline,
adamc@874 198 string "mysql_close(conn->conn);",
adamc@874 199 newline,
adamc@874 200 string "uw_error(ctx, FATAL, \"Result store failed:\\n",
adamc@874 201 string q',
adamc@874 202 string "\");",
adamc@874 203 newline],
adamc@874 204 string "}",
adamc@874 205 newline,
adamc@874 206 newline,
adamc@874 207
adamc@874 208 string "if (mysql_num_fields(res) != 1) {",
adamc@874 209 newline,
adamc@874 210 box [string "mysql_free_result(res);",
adamc@874 211 newline,
adamc@874 212 string "mysql_close(conn->conn);",
adamc@874 213 newline,
adamc@874 214 string "uw_error(ctx, FATAL, \"Bad column count:\\n",
adamc@874 215 string q',
adamc@874 216 string "\");",
adamc@874 217 newline],
adamc@874 218 string "}",
adamc@874 219 newline,
adamc@874 220 newline,
adamc@874 221
adamc@874 222 string "if ((row = mysql_fetch_row(res)) == NULL) {",
adamc@874 223 newline,
adamc@874 224 box [string "mysql_free_result(res);",
adamc@874 225 newline,
adamc@874 226 string "mysql_close(conn->conn);",
adamc@874 227 newline,
adamc@874 228 string "uw_error(ctx, FATAL, \"Row fetch failed:\\n",
adamc@874 229 string q',
adamc@874 230 string "\");",
adamc@874 231 newline],
adamc@874 232 string "}",
adamc@874 233 newline,
adamc@874 234 newline,
adamc@874 235
adamc@874 236 string "if (strcmp(row[0], \"",
adamc@874 237 string (Int.toString (length xts)),
adamc@874 238 string "\")) {",
adamc@874 239 newline,
adamc@874 240 box [string "mysql_free_result(res);",
adamc@874 241 newline,
adamc@874 242 string "mysql_close(conn->conn);",
adamc@874 243 newline,
adamc@874 244 string "uw_error(ctx, FATAL, \"Table '",
adamc@874 245 string s,
adamc@874 246 string "' has the wrong column types.\");",
adamc@874 247 newline],
adamc@874 248 string "}",
adamc@874 249 newline,
adamc@874 250 newline,
adamc@874 251 string "mysql_free_result(res);",
adamc@874 252 newline,
adamc@874 253 newline,
adamc@874 254
adamc@874 255 string "if (mysql_query(conn->conn, \"",
adamc@874 256 string q'',
adamc@874 257 string "\")) {",
adamc@874 258 newline,
adamc@874 259 box [string "mysql_close(conn->conn);",
adamc@874 260 newline,
adamc@874 261 string "uw_error(ctx, FATAL, \"Query failed:\\n",
adamc@874 262 string q'',
adamc@874 263 string "\");",
adamc@874 264 newline],
adamc@874 265 string "}",
adamc@874 266 newline,
adamc@874 267 newline,
adamc@874 268
adamc@874 269 string "if ((res = mysql_store_result(conn->conn)) == NULL) {",
adamc@874 270 newline,
adamc@874 271 box [string "mysql_free_result(res);",
adamc@874 272 newline,
adamc@874 273 string "mysql_close(conn->conn);",
adamc@874 274 newline,
adamc@874 275 string "uw_error(ctx, FATAL, \"Result store failed:\\n",
adamc@874 276 string q'',
adamc@874 277 string "\");",
adamc@874 278 newline],
adamc@874 279 string "}",
adamc@874 280 newline,
adamc@874 281 newline,
adamc@874 282
adamc@874 283 string "if (mysql_num_fields(res) != 1) {",
adamc@874 284 newline,
adamc@874 285 box [string "mysql_free_result(res);",
adamc@874 286 newline,
adamc@874 287 string "mysql_close(conn->conn);",
adamc@874 288 newline,
adamc@874 289 string "uw_error(ctx, FATAL, \"Bad column count:\\n",
adamc@874 290 string q'',
adamc@874 291 string "\");",
adamc@874 292 newline],
adamc@874 293 string "}",
adamc@874 294 newline,
adamc@874 295 newline,
adamc@874 296
adamc@874 297 string "if ((row = mysql_fetch_row(res)) == NULL) {",
adamc@874 298 newline,
adamc@874 299 box [string "mysql_free_result(res);",
adamc@874 300 newline,
adamc@874 301 string "mysql_close(conn->conn);",
adamc@874 302 newline,
adamc@874 303 string "uw_error(ctx, FATAL, \"Row fetch failed:\\n",
adamc@874 304 string q'',
adamc@874 305 string "\");",
adamc@874 306 newline],
adamc@874 307 string "}",
adamc@874 308 newline,
adamc@874 309 newline,
adamc@874 310
adamc@874 311 string "if (strcmp(row[0], \"",
adamc@874 312 string (Int.toString (length xts)),
adamc@874 313 string "\")) {",
adamc@874 314 newline,
adamc@874 315 box [string "mysql_free_result(res);",
adamc@874 316 newline,
adamc@874 317 string "mysql_close(conn->conn);",
adamc@874 318 newline,
adamc@874 319 string "uw_error(ctx, FATAL, \"Table '",
adamc@874 320 string s,
adamc@874 321 string "' has extra columns.\");",
adamc@874 322 newline],
adamc@874 323 string "}",
adamc@874 324 newline,
adamc@874 325 newline,
adamc@874 326 string "mysql_free_result(res);",
adamc@874 327 newline]
adamc@874 328 end
adamc@874 329
adamc@872 330 fun init {dbstring, prepared = ss, tables, views, sequences} =
adamc@866 331 let
adamc@866 332 val host = ref NONE
adamc@866 333 val user = ref NONE
adamc@866 334 val passwd = ref NONE
adamc@866 335 val db = ref NONE
adamc@866 336 val port = ref NONE
adamc@866 337 val unix_socket = ref NONE
adamc@866 338
adamc@866 339 fun stringOf r = case !r of
adamc@866 340 NONE => string "NULL"
adamc@866 341 | SOME s => box [string "\"",
adamc@866 342 string (String.toString s),
adamc@866 343 string "\""]
adamc@866 344 in
adamc@866 345 app (fn s =>
adamc@866 346 case String.fields (fn ch => ch = #"=") s of
adamc@866 347 [name, value] =>
adamc@866 348 (case name of
adamc@866 349 "host" =>
adamc@866 350 if size value > 0 andalso String.sub (value, 0) = #"/" then
adamc@866 351 unix_socket := SOME value
adamc@866 352 else
adamc@866 353 host := SOME value
adamc@866 354 | "hostaddr" => host := SOME value
adamc@866 355 | "port" => port := Int.fromString value
adamc@866 356 | "dbname" => db := SOME value
adamc@866 357 | "user" => user := SOME value
adamc@866 358 | "password" => passwd := SOME value
adamc@866 359 | _ => ())
adamc@866 360 | _ => ()) (String.tokens Char.isSpace dbstring);
adamc@866 361
adamc@866 362 box [string "typedef struct {",
adamc@866 363 newline,
adamc@866 364 box [string "MYSQL *conn;",
adamc@866 365 newline,
adamc@866 366 p_list_sepi (box [])
adamc@866 367 (fn i => fn _ =>
adamc@866 368 box [string "MYSQL_STMT *p",
adamc@866 369 string (Int.toString i),
adamc@866 370 string ";",
adamc@866 371 newline])
adamc@866 372 ss],
adamc@866 373 string "} uw_conn;",
adamc@866 374 newline,
adamc@866 375 newline,
adamc@866 376
adamc@874 377 string "void uw_client_init(void) {",
adamc@874 378 newline,
adamc@874 379 box [string "if (mysql_library_init(0, NULL, NULL)) {",
adamc@874 380 newline,
adamc@874 381 box [string "fprintf(stderr, \"Could not initialize MySQL library\\n\");",
adamc@874 382 newline,
adamc@874 383 string "exit(1);",
adamc@874 384 newline],
adamc@874 385 string "}",
adamc@874 386 newline],
adamc@874 387 string "}",
adamc@874 388 newline,
adamc@874 389 newline,
adamc@874 390
adamc@866 391 if #persistent (currentProtocol ()) then
adamc@874 392 box [string "static void uw_db_validate(uw_context ctx) {",
adamc@874 393 newline,
adamc@874 394 string "uw_conn *conn = uw_get_db(ctx);",
adamc@874 395 newline,
adamc@874 396 string "MYSQL_RES *res;",
adamc@874 397 newline,
adamc@874 398 string "MYSQL_ROW row;",
adamc@874 399 newline,
adamc@874 400 newline,
adamc@874 401 p_list_sep newline (checkRel ("tables", true)) tables,
adamc@874 402 p_list_sep newline (checkRel ("views", false)) views,
adamc@874 403 string "}",
adamc@874 404 newline,
adamc@874 405 newline,
adamc@874 406
adamc@874 407 string "static void uw_db_prepare(uw_context ctx) {",
adamc@866 408 newline,
adamc@866 409 string "uw_conn *conn = uw_get_db(ctx);",
adamc@866 410 newline,
adamc@866 411 string "MYSQL_STMT *stmt;",
adamc@866 412 newline,
adamc@866 413 newline,
adamc@866 414
adamc@866 415 p_list_sepi newline (fn i => fn (s, n) =>
adamc@866 416 let
adamc@866 417 fun uhoh this s args =
adamc@866 418 box [p_list_sepi (box [])
adamc@866 419 (fn j => fn () =>
adamc@866 420 box [string
adamc@866 421 "mysql_stmt_close(conn->p",
adamc@866 422 string (Int.toString j),
adamc@866 423 string ");",
adamc@866 424 newline])
adamc@866 425 (List.tabulate (i, fn _ => ())),
adamc@866 426 box (if this then
adamc@866 427 [string
adamc@866 428 "mysql_stmt_close(conn->p",
adamc@866 429 string (Int.toString i),
adamc@866 430 string ");",
adamc@866 431 newline]
adamc@866 432 else
adamc@866 433 []),
adamc@866 434 string "mysql_close(conn->conn);",
adamc@866 435 newline,
adamc@866 436 string "uw_error(ctx, FATAL, \"",
adamc@866 437 string s,
adamc@866 438 string "\"",
adamc@866 439 p_list_sep (box []) (fn s => box [string ", ",
adamc@866 440 string s]) args,
adamc@866 441 string ");",
adamc@866 442 newline]
adamc@866 443 in
adamc@866 444 box [string "stmt = mysql_stmt_init(conn->conn);",
adamc@866 445 newline,
adamc@866 446 string "if (stmt == NULL) {",
adamc@866 447 newline,
adamc@866 448 uhoh false "Out of memory allocating prepared statement" [],
adamc@866 449 string "}",
adamc@866 450 newline,
adamc@874 451 string "conn->p",
adamc@874 452 string (Int.toString i),
adamc@874 453 string " = stmt;",
adamc@874 454 newline,
adamc@866 455
adamc@866 456 string "if (mysql_stmt_prepare(stmt, \"",
adamc@866 457 string (String.toString s),
adamc@866 458 string "\", ",
adamc@866 459 string (Int.toString (size s)),
adamc@866 460 string ")) {",
adamc@866 461 newline,
adamc@866 462 box [string "char msg[1024];",
adamc@866 463 newline,
adamc@866 464 string "strncpy(msg, mysql_stmt_error(stmt), 1024);",
adamc@866 465 newline,
adamc@866 466 string "msg[1023] = 0;",
adamc@866 467 newline,
adamc@866 468 uhoh true "Error preparing statement: %s" ["msg"]],
adamc@866 469 string "}",
adamc@866 470 newline]
adamc@866 471 end)
adamc@866 472 ss,
adamc@866 473
adamc@866 474 string "}"]
adamc@866 475 else
adamc@866 476 string "static void uw_db_prepare(uw_context ctx) { }",
adamc@866 477 newline,
adamc@866 478 newline,
adamc@866 479
adamc@866 480 string "void uw_db_init(uw_context ctx) {",
adamc@866 481 newline,
adamc@866 482 string "MYSQL *mysql = mysql_init(NULL);",
adamc@866 483 newline,
adamc@866 484 string "uw_conn *conn;",
adamc@866 485 newline,
adamc@866 486 string "if (mysql == NULL) uw_error(ctx, FATAL, ",
adamc@866 487 string "\"libmysqlclient can't allocate a connection.\");",
adamc@866 488 newline,
adamc@866 489 string "if (mysql_real_connect(mysql, ",
adamc@866 490 stringOf host,
adamc@866 491 string ", ",
adamc@866 492 stringOf user,
adamc@866 493 string ", ",
adamc@866 494 stringOf passwd,
adamc@866 495 string ", ",
adamc@866 496 stringOf db,
adamc@866 497 string ", ",
adamc@866 498 case !port of
adamc@866 499 NONE => string "0"
adamc@866 500 | SOME n => string (Int.toString n),
adamc@866 501 string ", ",
adamc@866 502 stringOf unix_socket,
adamc@874 503 string ", 0) == NULL) {",
adamc@866 504 newline,
adamc@866 505 box [string "char msg[1024];",
adamc@866 506 newline,
adamc@866 507 string "strncpy(msg, mysql_error(mysql), 1024);",
adamc@866 508 newline,
adamc@866 509 string "msg[1023] = 0;",
adamc@866 510 newline,
adamc@866 511 string "mysql_close(mysql);",
adamc@866 512 newline,
adamc@866 513 string "uw_error(ctx, BOUNDED_RETRY, ",
adamc@866 514 string "\"Connection to MySQL server failed: %s\", msg);"],
adamc@866 515 newline,
adamc@866 516 string "}",
adamc@866 517 newline,
adamc@874 518 string "conn = calloc(1, sizeof(uw_conn));",
adamc@866 519 newline,
adamc@866 520 string "conn->conn = mysql;",
adamc@866 521 newline,
adamc@866 522 string "uw_set_db(ctx, conn);",
adamc@866 523 newline,
adamc@866 524 string "uw_db_validate(ctx);",
adamc@866 525 newline,
adamc@866 526 string "uw_db_prepare(ctx);",
adamc@866 527 newline,
adamc@866 528 string "}",
adamc@866 529 newline,
adamc@866 530 newline,
adamc@866 531
adamc@866 532 string "void uw_db_close(uw_context ctx) {",
adamc@866 533 newline,
adamc@866 534 string "uw_conn *conn = uw_get_db(ctx);",
adamc@866 535 newline,
adamc@866 536 p_list_sepi (box [])
adamc@866 537 (fn i => fn _ =>
adamc@866 538 box [string "if (conn->p",
adamc@866 539 string (Int.toString i),
adamc@866 540 string ") mysql_stmt_close(conn->p",
adamc@866 541 string (Int.toString i),
adamc@866 542 string ");",
adamc@866 543 newline])
adamc@866 544 ss,
adamc@866 545 string "mysql_close(conn->conn);",
adamc@866 546 newline,
adamc@866 547 string "}",
adamc@866 548 newline,
adamc@866 549 newline,
adamc@866 550
adamc@866 551 string "int uw_db_begin(uw_context ctx) {",
adamc@866 552 newline,
adamc@866 553 string "uw_conn *conn = uw_get_db(ctx);",
adamc@866 554 newline,
adamc@866 555 newline,
adamc@866 556 string "return mysql_query(conn->conn, \"SET TRANSACTION ISOLATION LEVEL SERIALIZABLE\")",
adamc@866 557 newline,
adamc@866 558 string " || mysql_query(conn->conn, \"BEGIN\");",
adamc@866 559 newline,
adamc@866 560 string "}",
adamc@866 561 newline,
adamc@866 562 newline,
adamc@866 563
adamc@866 564 string "int uw_db_commit(uw_context ctx) {",
adamc@866 565 newline,
adamc@866 566 string "uw_conn *conn = uw_get_db(ctx);",
adamc@866 567 newline,
adamc@866 568 string "return mysql_commit(conn->conn);",
adamc@866 569 newline,
adamc@866 570 string "}",
adamc@866 571 newline,
adamc@866 572 newline,
adamc@866 573
adamc@866 574 string "int uw_db_rollback(uw_context ctx) {",
adamc@866 575 newline,
adamc@866 576 string "uw_conn *conn = uw_get_db(ctx);",
adamc@866 577 newline,
adamc@866 578 string "return mysql_rollback(conn->conn);",
adamc@866 579 newline,
adamc@866 580 string "}",
adamc@866 581 newline,
adamc@866 582 newline]
adamc@866 583 end
adamc@866 584
adamc@873 585 fun p_getcol {wontLeakStrings = _, col = i, typ = t} =
adamc@873 586 let
adamc@873 587 fun getter t =
adamc@873 588 case t of
adamc@873 589 String => box [string "({",
adamc@873 590 newline,
adamc@873 591 string "uw_Basis_string s = uw_malloc(ctx, length",
adamc@873 592 string (Int.toString i),
adamc@873 593 string " + 1);",
adamc@873 594 newline,
adamc@873 595 string "out[",
adamc@873 596 string (Int.toString i),
adamc@873 597 string "].buffer = s;",
adamc@873 598 newline,
adamc@873 599 string "out[",
adamc@873 600 string (Int.toString i),
adamc@873 601 string "].buffer_length = length",
adamc@873 602 string (Int.toString i),
adamc@873 603 string " + 1;",
adamc@873 604 newline,
adamc@873 605 string "mysql_stmt_fetch_column(stmt, &out[",
adamc@873 606 string (Int.toString i),
adamc@873 607 string "], ",
adamc@873 608 string (Int.toString i),
adamc@873 609 string ", 0);",
adamc@873 610 newline,
adamc@873 611 string "s[length",
adamc@873 612 string (Int.toString i),
adamc@873 613 string "] = 0;",
adamc@873 614 newline,
adamc@873 615 string "s;",
adamc@873 616 newline,
adamc@873 617 string "})"]
adamc@873 618 | Blob => box [string "({",
adamc@873 619 newline,
adamc@873 620 string "uw_Basis_blob b = {length",
adamc@873 621 string (Int.toString i),
adamc@873 622 string ", uw_malloc(ctx, length",
adamc@873 623 string (Int.toString i),
adamc@873 624 string ")};",
adamc@873 625 newline,
adamc@873 626 string "out[",
adamc@873 627 string (Int.toString i),
adamc@873 628 string "].buffer = b.data;",
adamc@873 629 newline,
adamc@873 630 string "out[",
adamc@873 631 string (Int.toString i),
adamc@873 632 string "].buffer_length = length",
adamc@873 633 string (Int.toString i),
adamc@873 634 string ";",
adamc@873 635 newline,
adamc@873 636 string "mysql_stmt_fetch_column(stmt, &out[",
adamc@873 637 string (Int.toString i),
adamc@873 638 string "], ",
adamc@873 639 string (Int.toString i),
adamc@873 640 string ", 0);",
adamc@873 641 newline,
adamc@873 642 string "b;",
adamc@873 643 newline,
adamc@873 644 string "})"]
adamc@873 645 | Time => box [string "({",
adamc@873 646 string "MYSQL_TIME *mt = buffer",
adamc@873 647 string (Int.toString i),
adamc@873 648 string ";",
adamc@873 649 newline,
adamc@873 650 newline,
adamc@873 651 string "struct tm t = {mt->second, mt->minute, mt->hour, mt->day, mt->month, mt->year, 0, 0, -1};",
adamc@873 652 newline,
adamc@873 653 string "mktime(&tm);",
adamc@873 654 newline,
adamc@873 655 string "})"]
adamc@873 656 | _ => box [string "buffer",
adamc@873 657 string (Int.toString i)]
adamc@873 658 in
adamc@873 659 case t of
adamc@873 660 Nullable t => box [string "(is_null",
adamc@873 661 string (Int.toString i),
adamc@873 662 string " ? NULL : ",
adamc@873 663 case t of
adamc@873 664 String => getter t
adamc@873 665 | _ => box [string "({",
adamc@873 666 newline,
adamc@873 667 string (p_sql_ctype t),
adamc@873 668 space,
adamc@873 669 string "*tmp = uw_malloc(ctx, sizeof(",
adamc@873 670 string (p_sql_ctype t),
adamc@873 671 string "));",
adamc@873 672 newline,
adamc@873 673 string "*tmp = ",
adamc@873 674 getter t,
adamc@873 675 string ";",
adamc@873 676 newline,
adamc@873 677 string "tmp;",
adamc@873 678 newline,
adamc@873 679 string "})"],
adamc@873 680 string ")"]
adamc@873 681 | _ => box [string "(is_null",
adamc@873 682 string (Int.toString i),
adamc@873 683 string " ? ",
adamc@873 684 box [string "({",
adamc@873 685 string (p_sql_ctype t),
adamc@873 686 space,
adamc@873 687 string "tmp;",
adamc@873 688 newline,
adamc@873 689 string "uw_error(ctx, FATAL, \"Unexpectedly NULL field #",
adamc@873 690 string (Int.toString i),
adamc@873 691 string "\");",
adamc@873 692 newline,
adamc@873 693 string "tmp;",
adamc@873 694 newline,
adamc@873 695 string "})"],
adamc@873 696 string " : ",
adamc@873 697 getter t,
adamc@873 698 string ")"]
adamc@873 699 end
adamc@873 700
adamc@873 701 fun queryCommon {loc, query, cols, doCols} =
adamc@873 702 box [string "int n, r;",
adamc@873 703 newline,
adamc@873 704 string "MYSQL_BIND out[",
adamc@873 705 string (Int.toString (length cols)),
adamc@873 706 string "];",
adamc@873 707 newline,
adamc@873 708 p_list_sepi (box []) (fn i => fn t =>
adamc@873 709 let
adamc@873 710 fun buffers t =
adamc@873 711 case t of
adamc@873 712 String => box [string "unsigned long length",
adamc@873 713 string (Int.toString i),
adamc@873 714 string ";",
adamc@873 715 newline]
adamc@873 716 | Blob => box [string "unsigned long length",
adamc@873 717 string (Int.toString i),
adamc@873 718 string ";",
adamc@873 719 newline]
adamc@873 720 | _ => box [string (p_sql_ctype t),
adamc@873 721 space,
adamc@873 722 string "buffer",
adamc@873 723 string (Int.toString i),
adamc@873 724 string ";",
adamc@873 725 newline]
adamc@873 726 in
adamc@873 727 box [string "my_bool is_null",
adamc@873 728 string (Int.toString i),
adamc@873 729 string ";",
adamc@873 730 newline,
adamc@873 731 case t of
adamc@873 732 Nullable t => buffers t
adamc@873 733 | _ => buffers t,
adamc@873 734 newline]
adamc@873 735 end) cols,
adamc@873 736 newline,
adamc@873 737
adamc@873 738 string "memset(out, 0, sizeof out);",
adamc@873 739 newline,
adamc@873 740 p_list_sepi (box []) (fn i => fn t =>
adamc@873 741 let
adamc@873 742 fun buffers t =
adamc@873 743 case t of
adamc@873 744 String => box []
adamc@873 745 | Blob => box []
adamc@873 746 | _ => box [string "out[",
adamc@873 747 string (Int.toString i),
adamc@873 748 string "].buffer = &buffer",
adamc@873 749 string (Int.toString i),
adamc@873 750 string ";",
adamc@873 751 newline]
adamc@873 752 in
adamc@873 753 box [string "out[",
adamc@873 754 string (Int.toString i),
adamc@873 755 string "].buffer_type = ",
adamc@873 756 string (p_buffer_type t),
adamc@873 757 string ";",
adamc@873 758 newline,
adamc@873 759 string "out[",
adamc@873 760 string (Int.toString i),
adamc@873 761 string "].is_null = &is_null",
adamc@873 762 string (Int.toString i),
adamc@873 763 string ";",
adamc@873 764 newline,
adamc@873 765
adamc@873 766 case t of
adamc@873 767 Nullable t => buffers t
adamc@873 768 | _ => buffers t,
adamc@873 769 newline]
adamc@873 770 end) cols,
adamc@873 771 newline,
adamc@873 772
adamc@873 773 string "if (mysql_stmt_execute(stmt)) uw_error(ctx, FATAL, \"",
adamc@873 774 string (ErrorMsg.spanToString loc),
adamc@874 775 string ": Error executing query: %s\", mysql_error(conn->conn));",
adamc@873 776 newline,
adamc@873 777 newline,
adamc@873 778
adamc@873 779 string "if (mysql_stmt_store_result(stmt)) uw_error(ctx, FATAL, \"",
adamc@873 780 string (ErrorMsg.spanToString loc),
adamc@874 781 string ": Error storing query result: %s\", mysql_error(conn->conn));",
adamc@873 782 newline,
adamc@873 783 newline,
adamc@873 784
adamc@873 785 string "if (mysql_stmt_bind_result(stmt, out)) uw_error(ctx, FATAL, \"",
adamc@873 786 string (ErrorMsg.spanToString loc),
adamc@874 787 string ": Error binding query result: %s\", mysql_error(conn->conn));",
adamc@873 788 newline,
adamc@873 789 newline,
adamc@873 790
adamc@873 791 string "uw_end_region(ctx);",
adamc@873 792 newline,
adamc@873 793 string "while ((r = mysql_stmt_fetch(stmt)) == 0) {",
adamc@873 794 newline,
adamc@873 795 doCols p_getcol,
adamc@873 796 string "}",
adamc@873 797 newline,
adamc@873 798 newline,
adamc@873 799
adamc@874 800 string "if (r == 1) uw_error(ctx, FATAL, \"",
adamc@873 801 string (ErrorMsg.spanToString loc),
adamc@874 802 string ": query result fetching failed (%d): %s\", r, mysql_error(conn->conn));",
adamc@873 803 newline]
adamc@873 804
adamc@873 805 fun query {loc, cols, doCols} =
adamc@873 806 box [string "uw_conn *conn = uw_get_db(ctx);",
adamc@873 807 newline,
adamc@873 808 string "MYSQL_stmt *stmt = mysql_stmt_init(conn->conn);",
adamc@873 809 newline,
adamc@873 810 string "if (stmt == NULL) uw_error(ctx, \"",
adamc@873 811 string (ErrorMsg.spanToString loc),
adamc@873 812 string ": can't allocate temporary prepared statement\");",
adamc@873 813 newline,
adamc@873 814 string "uw_push_cleanup(ctx, (void (*)(void *))mysql_stmt_close, stmt);",
adamc@873 815 newline,
adamc@873 816 string "if (mysql_stmt_prepare(stmt, query, strlen(query))) uw_error(ctx, FATAL, \"",
adamc@873 817 string (ErrorMsg.spanToString loc),
adamc@874 818 string ": error preparing statement: %s\", mysql_error(conn->conn));",
adamc@873 819 newline,
adamc@873 820 newline,
adamc@873 821
adamc@873 822 p_list_sepi (box []) (fn i => fn t =>
adamc@873 823 let
adamc@873 824 fun buffers t =
adamc@873 825 case t of
adamc@873 826 String => box []
adamc@873 827 | Blob => box []
adamc@873 828 | _ => box [string "out[",
adamc@873 829 string (Int.toString i),
adamc@873 830 string "].buffer = &buffer",
adamc@873 831 string (Int.toString i),
adamc@873 832 string ";",
adamc@873 833 newline]
adamc@873 834 in
adamc@873 835 box [string "in[",
adamc@873 836 string (Int.toString i),
adamc@873 837 string "].buffer_type = ",
adamc@873 838 string (p_buffer_type t),
adamc@873 839 string ";",
adamc@873 840 newline,
adamc@873 841
adamc@873 842 case t of
adamc@873 843 Nullable t => box [string "in[",
adamc@873 844 string (Int.toString i),
adamc@873 845 string "].is_null = &is_null",
adamc@873 846 string (Int.toString i),
adamc@873 847 string ";",
adamc@873 848 newline,
adamc@873 849 buffers t]
adamc@873 850 | _ => buffers t,
adamc@873 851 newline]
adamc@873 852 end) cols,
adamc@873 853 newline,
adamc@873 854
adamc@873 855 queryCommon {loc = loc, cols = cols, doCols = doCols, query = string "query"},
adamc@873 856
adamc@873 857 string "uw_pop_cleanup(ctx);",
adamc@873 858 newline]
adamc@873 859
adamc@873 860 fun p_ensql t e =
adamc@873 861 case t of
adamc@873 862 Int => box [string "uw_Basis_attrifyInt(ctx, ", e, string ")"]
adamc@873 863 | Float => box [string "uw_Basis_attrifyFloat(ctx, ", e, string ")"]
adamc@873 864 | String => e
adamc@873 865 | Bool => box [string "(", e, string " ? \"TRUE\" : \"FALSE\")"]
adamc@873 866 | Time => box [string "uw_Basis_attrifyTime(ctx, ", e, string ")"]
adamc@873 867 | Blob => box [e, string ".data"]
adamc@873 868 | Channel => box [string "uw_Basis_attrifyChannel(ctx, ", e, string ")"]
adamc@873 869 | Client => box [string "uw_Basis_attrifyClient(ctx, ", e, string ")"]
adamc@873 870 | Nullable String => e
adamc@873 871 | Nullable t => box [string "(",
adamc@873 872 e,
adamc@873 873 string " == NULL ? NULL : ",
adamc@873 874 p_ensql t (box [string "(*", e, string ")"]),
adamc@873 875 string ")"]
adamc@873 876
adamc@873 877 fun queryPrepared {loc, id, query, inputs, cols, doCols} =
adamc@873 878 box [string "uw_conn *conn = uw_get_db(ctx);",
adamc@873 879 newline,
adamc@873 880 string "MYSQL_BIND in[",
adamc@873 881 string (Int.toString (length inputs)),
adamc@873 882 string "];",
adamc@873 883 newline,
adamc@873 884 p_list_sepi (box []) (fn i => fn t =>
adamc@873 885 let
adamc@873 886 fun buffers t =
adamc@873 887 case t of
adamc@873 888 String => box [string "unsigned long in_length",
adamc@873 889 string (Int.toString i),
adamc@873 890 string ";",
adamc@873 891 newline]
adamc@873 892 | Blob => box [string "unsigned long in_length",
adamc@873 893 string (Int.toString i),
adamc@873 894 string ";",
adamc@873 895 newline]
adamc@873 896 | Time => box [string (p_sql_ctype t),
adamc@873 897 space,
adamc@873 898 string "in_buffer",
adamc@873 899 string (Int.toString i),
adamc@873 900 string ";",
adamc@873 901 newline]
adamc@873 902 | _ => box []
adamc@873 903 in
adamc@873 904 box [case t of
adamc@873 905 Nullable t => box [string "my_bool in_is_null",
adamc@873 906 string (Int.toString i),
adamc@873 907 string ";",
adamc@873 908 newline,
adamc@873 909 buffers t]
adamc@873 910 | _ => buffers t,
adamc@873 911 newline]
adamc@873 912 end) inputs,
adamc@873 913 string "MYSQL_STMT *stmt = conn->p",
adamc@873 914 string (Int.toString id),
adamc@873 915 string ";",
adamc@873 916 newline,
adamc@873 917 newline,
adamc@873 918
adamc@873 919 string "memset(in, 0, sizeof in);",
adamc@873 920 newline,
adamc@873 921 p_list_sepi (box []) (fn i => fn t =>
adamc@873 922 let
adamc@873 923 fun buffers t =
adamc@873 924 case t of
adamc@873 925 String => box [string "in[",
adamc@873 926 string (Int.toString i),
adamc@873 927 string "].buffer = arg",
adamc@873 928 string (Int.toString (i + 1)),
adamc@873 929 string ";",
adamc@873 930 newline,
adamc@873 931 string "in_length",
adamc@873 932 string (Int.toString i),
adamc@873 933 string "= in[",
adamc@873 934 string (Int.toString i),
adamc@873 935 string "].buffer_length = strlen(arg",
adamc@873 936 string (Int.toString (i + 1)),
adamc@873 937 string ");",
adamc@873 938 newline,
adamc@873 939 string "in[",
adamc@873 940 string (Int.toString i),
adamc@873 941 string "].length = &in_length",
adamc@873 942 string (Int.toString i),
adamc@873 943 string ";",
adamc@873 944 newline]
adamc@873 945 | Blob => box [string "in[",
adamc@873 946 string (Int.toString i),
adamc@873 947 string "].buffer = arg",
adamc@873 948 string (Int.toString (i + 1)),
adamc@873 949 string ".data;",
adamc@873 950 newline,
adamc@873 951 string "in_length",
adamc@873 952 string (Int.toString i),
adamc@873 953 string "= in[",
adamc@873 954 string (Int.toString i),
adamc@873 955 string "].buffer_length = arg",
adamc@873 956 string (Int.toString (i + 1)),
adamc@873 957 string ".size;",
adamc@873 958 newline,
adamc@873 959 string "in[",
adamc@873 960 string (Int.toString i),
adamc@873 961 string "].length = &in_length",
adamc@873 962 string (Int.toString i),
adamc@873 963 string ";",
adamc@873 964 newline]
adamc@873 965 | Time =>
adamc@873 966 let
adamc@873 967 fun oneField dst src =
adamc@873 968 box [string "in_buffer",
adamc@873 969 string (Int.toString i),
adamc@873 970 string ".",
adamc@873 971 string dst,
adamc@873 972 string " = tms.tm_",
adamc@873 973 string src,
adamc@873 974 string ";",
adamc@873 975 newline]
adamc@873 976 in
adamc@873 977 box [string "({",
adamc@873 978 newline,
adamc@873 979 string "struct tm tms;",
adamc@873 980 newline,
adamc@873 981 string "if (localtime_r(&arg",
adamc@873 982 string (Int.toString (i + 1)),
adamc@873 983 string ", &tm) == NULL) uw_error(\"",
adamc@873 984 string (ErrorMsg.spanToString loc),
adamc@873 985 string ": error converting to MySQL time\");",
adamc@873 986 newline,
adamc@873 987 oneField "year" "year",
adamc@873 988 oneField "month" "mon",
adamc@873 989 oneField "day" "mday",
adamc@873 990 oneField "hour" "hour",
adamc@873 991 oneField "minute" "min",
adamc@873 992 oneField "second" "sec",
adamc@873 993 newline,
adamc@873 994 string "in[",
adamc@873 995 string (Int.toString i),
adamc@873 996 string "].buffer = &in_buffer",
adamc@873 997 string (Int.toString i),
adamc@873 998 string ";",
adamc@873 999 newline]
adamc@873 1000 end
adamc@873 1001
adamc@873 1002 | _ => box [string "in[",
adamc@873 1003 string (Int.toString i),
adamc@873 1004 string "].buffer = &arg",
adamc@873 1005 string (Int.toString (i + 1)),
adamc@873 1006 string ";",
adamc@873 1007 newline]
adamc@873 1008 in
adamc@873 1009 box [string "in[",
adamc@873 1010 string (Int.toString i),
adamc@873 1011 string "].buffer_type = ",
adamc@873 1012 string (p_buffer_type t),
adamc@873 1013 string ";",
adamc@873 1014 newline,
adamc@873 1015
adamc@873 1016 case t of
adamc@873 1017 Nullable t => box [string "in[",
adamc@873 1018 string (Int.toString i),
adamc@873 1019 string "].is_null = &in_is_null",
adamc@873 1020 string (Int.toString i),
adamc@873 1021 string ";",
adamc@873 1022 newline,
adamc@873 1023 string "if (arg",
adamc@873 1024 string (Int.toString (i + 1)),
adamc@873 1025 string " == NULL) {",
adamc@873 1026 newline,
adamc@873 1027 box [string "in_is_null",
adamc@873 1028 string (Int.toString i),
adamc@873 1029 string " = 1;",
adamc@873 1030 newline],
adamc@873 1031 string "} else {",
adamc@873 1032 box [case t of
adamc@873 1033 String => box []
adamc@873 1034 | _ =>
adamc@873 1035 box [string (p_sql_ctype t),
adamc@873 1036 space,
adamc@873 1037 string "arg",
adamc@873 1038 string (Int.toString (i + 1)),
adamc@873 1039 string " = *arg",
adamc@873 1040 string (Int.toString (i + 1)),
adamc@873 1041 string ";",
adamc@873 1042 newline],
adamc@873 1043 string "in_is_null",
adamc@873 1044 string (Int.toString i),
adamc@873 1045 string " = 0;",
adamc@873 1046 newline,
adamc@873 1047 buffers t,
adamc@873 1048 newline]]
adamc@873 1049
adamc@873 1050 | _ => buffers t,
adamc@873 1051 newline]
adamc@873 1052 end) inputs,
adamc@873 1053 newline,
adamc@873 1054
adamc@873 1055 queryCommon {loc = loc, cols = cols, doCols = doCols, query = box [string "\"",
adamc@873 1056 string (String.toString query),
adamc@873 1057 string "\""]}]
adamc@873 1058
adamc@873 1059 fun dml _ = box []
adamc@873 1060 fun dmlPrepared _ = box []
adamc@873 1061 fun nextval _ = box []
adamc@873 1062 fun nextvalPrepared _ = box []
adamc@867 1063
adamc@874 1064 fun sqlifyString s = "CAST('" ^ String.translate (fn #"'" => "\\'"
adamc@874 1065 | #"\\" => "\\\\"
adamc@874 1066 | ch =>
adamc@874 1067 if Char.isPrint ch then
adamc@874 1068 str ch
adamc@874 1069 else
adamc@874 1070 (ErrorMsg.error
adamc@874 1071 "Non-printing character found in SQL string literal";
adamc@874 1072 ""))
adamc@874 1073 (String.toString s) ^ "' AS longtext)"
adamc@874 1074
adamc@874 1075 fun p_cast (s, t) = "CAST(" ^ s ^ " AS " ^ p_sql_type t ^ ")"
adamc@874 1076
adamc@874 1077 fun p_blank _ = "?"
adamc@874 1078
adamc@866 1079 val () = addDbms {name = "mysql",
adamc@866 1080 header = "mysql/mysql.h",
adamc@866 1081 link = "-lmysqlclient",
adamc@867 1082 init = init,
adamc@873 1083 p_sql_type = p_sql_type,
adamc@867 1084 query = query,
adamc@868 1085 queryPrepared = queryPrepared,
adamc@868 1086 dml = dml,
adamc@869 1087 dmlPrepared = dmlPrepared,
adamc@869 1088 nextval = nextval,
adamc@874 1089 nextvalPrepared = nextvalPrepared,
adamc@874 1090 sqlifyString = sqlifyString,
adamc@874 1091 p_cast = p_cast,
adamc@874 1092 p_blank = p_blank,
adamc@874 1093 supportsDeleteAs = false}
adamc@866 1094
adamc@866 1095 end