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annotate src/postgres.sml @ 1019:68ba074e260f

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author Adam Chlipala <adamc@hcoop.net>
date Sun, 25 Oct 2009 13:12:24 -0400
parents ea9f03ac2710
children b2311dfb3158
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 Postgres :> POSTGRES = struct
adamc@866 29
adamc@866 30 open Settings
adamc@866 31 open Print.PD
adamc@866 32 open Print
adamc@866 33
adamc@870 34 val ident = String.translate (fn #"'" => "PRIME"
adamc@870 35 | ch => str ch)
adamc@870 36
adamc@873 37 fun p_sql_type t =
adamc@873 38 case t of
adamc@873 39 Int => "int8"
adamc@873 40 | Float => "float8"
adamc@873 41 | String => "text"
adamc@1011 42 | Char => "char"
adamc@873 43 | Bool => "bool"
adamc@873 44 | Time => "timestamp"
adamc@873 45 | Blob => "bytea"
adamc@873 46 | Channel => "int8"
adamc@873 47 | Client => "int4"
adamc@873 48 | Nullable t => p_sql_type t
adamc@873 49
adamc@870 50 fun p_sql_type_base t =
adamc@870 51 case t of
adamc@871 52 Int => "bigint"
adamc@871 53 | Float => "double precision"
adamc@870 54 | String => "text"
adamc@1011 55 | Char => "character"
adamc@871 56 | Bool => "boolean"
adamc@871 57 | Time => "timestamp without time zone"
adamc@870 58 | Blob => "bytea"
adamc@871 59 | Channel => "bigint"
adamc@871 60 | Client => "integer"
adamc@870 61 | Nullable t => p_sql_type_base t
adamc@870 62
adamc@872 63 fun checkRel (table, checkNullable) (s, xts) =
adamc@871 64 let
adamc@871 65 val sl = CharVector.map Char.toLower s
adamc@871 66
adamc@872 67 val q = "SELECT COUNT(*) FROM information_schema." ^ table ^ " WHERE table_name = '"
adamc@871 68 ^ sl ^ "'"
adamc@871 69
adamc@871 70 val q' = String.concat ["SELECT COUNT(*) FROM information_schema.columns WHERE table_name = '",
adamc@871 71 sl,
adamc@871 72 "' AND (",
adamc@871 73 String.concatWith " OR "
adamc@871 74 (map (fn (x, t) =>
adamc@871 75 String.concat ["(column_name = 'uw_",
adamc@871 76 CharVector.map
adamc@871 77 Char.toLower (ident x),
adamc@871 78 "' AND data_type = '",
adamc@871 79 p_sql_type_base t,
adamc@872 80 "'",
adamc@872 81 if checkNullable then
adamc@872 82 (" AND is_nullable = '"
adamc@872 83 ^ (if isNotNull t then
adamc@872 84 "NO"
adamc@872 85 else
adamc@872 86 "YES")
adamc@872 87 ^ "'")
adamc@871 88 else
adamc@872 89 "",
adamc@872 90 ")"]) xts),
adamc@871 91 ")"]
adamc@871 92
adamc@871 93 val q'' = String.concat ["SELECT COUNT(*) FROM information_schema.columns WHERE table_name = '",
adamc@871 94 sl,
adamc@871 95 "' AND column_name LIKE 'uw_%'"]
adamc@871 96 in
adamc@871 97 box [string "res = PQexec(conn, \"",
adamc@871 98 string q,
adamc@871 99 string "\");",
adamc@871 100 newline,
adamc@871 101 newline,
adamc@871 102 string "if (res == NULL) {",
adamc@871 103 newline,
adamc@871 104 box [string "PQfinish(conn);",
adamc@871 105 newline,
adamc@871 106 string "uw_error(ctx, FATAL, \"Out of memory allocating query result.\");",
adamc@871 107 newline],
adamc@871 108 string "}",
adamc@871 109 newline,
adamc@871 110 newline,
adamc@871 111 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@871 112 newline,
adamc@871 113 box [string "char msg[1024];",
adamc@871 114 newline,
adamc@871 115 string "strncpy(msg, PQerrorMessage(conn), 1024);",
adamc@871 116 newline,
adamc@871 117 string "msg[1023] = 0;",
adamc@871 118 newline,
adamc@871 119 string "PQclear(res);",
adamc@871 120 newline,
adamc@871 121 string "PQfinish(conn);",
adamc@871 122 newline,
adamc@871 123 string "uw_error(ctx, FATAL, \"Query failed:\\n",
adamc@871 124 string q,
adamc@871 125 string "\\n%s\", msg);",
adamc@871 126 newline],
adamc@871 127 string "}",
adamc@871 128 newline,
adamc@871 129 newline,
adamc@871 130 string "if (strcmp(PQgetvalue(res, 0, 0), \"1\")) {",
adamc@871 131 newline,
adamc@871 132 box [string "PQclear(res);",
adamc@871 133 newline,
adamc@871 134 string "PQfinish(conn);",
adamc@871 135 newline,
adamc@871 136 string "uw_error(ctx, FATAL, \"Table '",
adamc@871 137 string s,
adamc@871 138 string "' does not exist.\");",
adamc@871 139 newline],
adamc@871 140 string "}",
adamc@871 141 newline,
adamc@871 142 newline,
adamc@871 143 string "PQclear(res);",
adamc@871 144 newline,
adamc@871 145
adamc@871 146 string "res = PQexec(conn, \"",
adamc@871 147 string q',
adamc@871 148 string "\");",
adamc@871 149 newline,
adamc@871 150 newline,
adamc@871 151 string "if (res == NULL) {",
adamc@871 152 newline,
adamc@871 153 box [string "PQfinish(conn);",
adamc@871 154 newline,
adamc@871 155 string "uw_error(ctx, FATAL, \"Out of memory allocating query result.\");",
adamc@871 156 newline],
adamc@871 157 string "}",
adamc@871 158 newline,
adamc@871 159 newline,
adamc@871 160 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@871 161 newline,
adamc@871 162 box [string "char msg[1024];",
adamc@871 163 newline,
adamc@871 164 string "strncpy(msg, PQerrorMessage(conn), 1024);",
adamc@871 165 newline,
adamc@871 166 string "msg[1023] = 0;",
adamc@871 167 newline,
adamc@871 168 string "PQclear(res);",
adamc@871 169 newline,
adamc@871 170 string "PQfinish(conn);",
adamc@871 171 newline,
adamc@871 172 string "uw_error(ctx, FATAL, \"Query failed:\\n",
adamc@871 173 string q',
adamc@871 174 string "\\n%s\", msg);",
adamc@871 175 newline],
adamc@871 176 string "}",
adamc@871 177 newline,
adamc@871 178 newline,
adamc@871 179 string "if (strcmp(PQgetvalue(res, 0, 0), \"",
adamc@871 180 string (Int.toString (length xts)),
adamc@871 181 string "\")) {",
adamc@871 182 newline,
adamc@871 183 box [string "PQclear(res);",
adamc@871 184 newline,
adamc@871 185 string "PQfinish(conn);",
adamc@871 186 newline,
adamc@871 187 string "uw_error(ctx, FATAL, \"Table '",
adamc@871 188 string s,
adamc@871 189 string "' has the wrong column types.\");",
adamc@871 190 newline],
adamc@871 191 string "}",
adamc@871 192 newline,
adamc@871 193 newline,
adamc@871 194 string "PQclear(res);",
adamc@871 195 newline,
adamc@871 196 newline,
adamc@871 197
adamc@871 198 string "res = PQexec(conn, \"",
adamc@871 199 string q'',
adamc@871 200 string "\");",
adamc@871 201 newline,
adamc@871 202 newline,
adamc@871 203 string "if (res == NULL) {",
adamc@871 204 newline,
adamc@871 205 box [string "PQfinish(conn);",
adamc@871 206 newline,
adamc@871 207 string "uw_error(ctx, FATAL, \"Out of memory allocating query result.\");",
adamc@871 208 newline],
adamc@871 209 string "}",
adamc@871 210 newline,
adamc@871 211 newline,
adamc@871 212 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@871 213 newline,
adamc@871 214 box [string "char msg[1024];",
adamc@871 215 newline,
adamc@871 216 string "strncpy(msg, PQerrorMessage(conn), 1024);",
adamc@871 217 newline,
adamc@871 218 string "msg[1023] = 0;",
adamc@871 219 newline,
adamc@871 220 string "PQclear(res);",
adamc@871 221 newline,
adamc@871 222 string "PQfinish(conn);",
adamc@871 223 newline,
adamc@871 224 string "uw_error(ctx, FATAL, \"Query failed:\\n",
adamc@871 225 string q'',
adamc@871 226 string "\\n%s\", msg);",
adamc@871 227 newline],
adamc@871 228 string "}",
adamc@871 229 newline,
adamc@871 230 newline,
adamc@871 231 string "if (strcmp(PQgetvalue(res, 0, 0), \"",
adamc@871 232 string (Int.toString (length xts)),
adamc@871 233 string "\")) {",
adamc@871 234 newline,
adamc@871 235 box [string "PQclear(res);",
adamc@871 236 newline,
adamc@871 237 string "PQfinish(conn);",
adamc@871 238 newline,
adamc@871 239 string "uw_error(ctx, FATAL, \"Table '",
adamc@871 240 string s,
adamc@871 241 string "' has extra columns.\");",
adamc@871 242 newline],
adamc@871 243 string "}",
adamc@871 244 newline,
adamc@871 245 newline,
adamc@871 246 string "PQclear(res);",
adamc@871 247 newline]
adamc@871 248 end
adamc@871 249
adamc@872 250 fun init {dbstring, prepared = ss, tables, views, sequences} =
adamc@866 251 box [if #persistent (currentProtocol ()) then
adamc@879 252 box [string "void uw_client_init(void) {",
adamc@879 253 newline,
adamc@879 254 box [string "uw_sqlfmtInt = \"%lld::int8%n\";",
adamc@879 255 newline,
adamc@879 256 string "uw_sqlfmtFloat = \"%g::float8%n\";",
adamc@879 257 newline,
adamc@879 258 string "uw_Estrings = 1;",
adamc@879 259 newline,
adamc@879 260 string "uw_sqlsuffixString = \"::text\";",
adamc@879 261 newline,
adamc@1011 262 string "uw_sqlsuffixChar = \"::char\";",
adamc@1011 263 newline,
adamc@879 264 string "uw_sqlsuffixBlob = \"::bytea\";",
adamc@879 265 newline,
adamc@879 266 string "uw_sqlfmtUint4 = \"%u::int4%n\";",
adamc@879 267 newline],
adamc@879 268 string "}",
adamc@874 269 newline,
adamc@874 270 newline,
adamc@874 271
adamc@874 272 string "static void uw_db_validate(uw_context ctx) {",
adamc@870 273 newline,
adamc@870 274 string "PGconn *conn = uw_get_db(ctx);",
adamc@870 275 newline,
adamc@870 276 string "PGresult *res;",
adamc@870 277 newline,
adamc@870 278 newline,
adamc@872 279 p_list_sep newline (checkRel ("tables", true)) tables,
adamc@872 280 p_list_sep newline (checkRel ("views", false)) views,
adamc@870 281
adamc@870 282 p_list_sep newline
adamc@870 283 (fn s =>
adamc@870 284 let
adamc@870 285 val sl = CharVector.map Char.toLower s
adamc@870 286
adamc@870 287 val q = "SELECT COUNT(*) FROM pg_class WHERE relname = '"
adamc@870 288 ^ sl ^ "' AND relkind = 'S'"
adamc@870 289 in
adamc@870 290 box [string "res = PQexec(conn, \"",
adamc@870 291 string q,
adamc@870 292 string "\");",
adamc@870 293 newline,
adamc@870 294 newline,
adamc@870 295 string "if (res == NULL) {",
adamc@870 296 newline,
adamc@870 297 box [string "PQfinish(conn);",
adamc@870 298 newline,
adamc@870 299 string "uw_error(ctx, FATAL, \"Out of memory allocating query result.\");",
adamc@870 300 newline],
adamc@870 301 string "}",
adamc@870 302 newline,
adamc@870 303 newline,
adamc@870 304 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@870 305 newline,
adamc@870 306 box [string "char msg[1024];",
adamc@870 307 newline,
adamc@870 308 string "strncpy(msg, PQerrorMessage(conn), 1024);",
adamc@870 309 newline,
adamc@870 310 string "msg[1023] = 0;",
adamc@870 311 newline,
adamc@870 312 string "PQclear(res);",
adamc@870 313 newline,
adamc@870 314 string "PQfinish(conn);",
adamc@870 315 newline,
adamc@870 316 string "uw_error(ctx, FATAL, \"Query failed:\\n",
adamc@870 317 string q,
adamc@870 318 string "\\n%s\", msg);",
adamc@870 319 newline],
adamc@870 320 string "}",
adamc@870 321 newline,
adamc@870 322 newline,
adamc@870 323 string "if (strcmp(PQgetvalue(res, 0, 0), \"1\")) {",
adamc@870 324 newline,
adamc@870 325 box [string "PQclear(res);",
adamc@870 326 newline,
adamc@870 327 string "PQfinish(conn);",
adamc@870 328 newline,
adamc@870 329 string "uw_error(ctx, FATAL, \"Sequence '",
adamc@870 330 string s,
adamc@870 331 string "' does not exist.\");",
adamc@870 332 newline],
adamc@870 333 string "}",
adamc@870 334 newline,
adamc@870 335 newline,
adamc@870 336 string "PQclear(res);",
adamc@870 337 newline]
adamc@870 338 end) sequences,
adamc@870 339
adamc@870 340 string "}",
adamc@870 341
adamc@870 342 string "static void uw_db_prepare(uw_context ctx) {",
adamc@866 343 newline,
adamc@866 344 string "PGconn *conn = uw_get_db(ctx);",
adamc@866 345 newline,
adamc@866 346 string "PGresult *res;",
adamc@866 347 newline,
adamc@866 348 newline,
adamc@866 349
adamc@866 350 p_list_sepi newline (fn i => fn (s, n) =>
adamc@866 351 box [string "res = PQprepare(conn, \"uw",
adamc@866 352 string (Int.toString i),
adamc@866 353 string "\", \"",
adamc@866 354 string (String.toString s),
adamc@866 355 string "\", ",
adamc@866 356 string (Int.toString n),
adamc@866 357 string ", NULL);",
adamc@866 358 newline,
adamc@866 359 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adamc@866 360 newline,
adamc@866 361 box [string "char msg[1024];",
adamc@866 362 newline,
adamc@866 363 string "strncpy(msg, PQerrorMessage(conn), 1024);",
adamc@866 364 newline,
adamc@866 365 string "msg[1023] = 0;",
adamc@866 366 newline,
adamc@866 367 string "PQclear(res);",
adamc@866 368 newline,
adamc@866 369 string "PQfinish(conn);",
adamc@866 370 newline,
adamc@866 371 string "uw_error(ctx, FATAL, \"Unable to create prepared statement:\\n",
adamc@866 372 string (String.toString s),
adamc@866 373 string "\\n%s\", msg);",
adamc@866 374 newline],
adamc@866 375 string "}",
adamc@866 376 newline,
adamc@866 377 string "PQclear(res);",
adamc@866 378 newline])
adamc@866 379 ss,
adamc@866 380
adamc@866 381 string "}",
adamc@866 382 newline,
adamc@866 383 newline,
adamc@866 384
adamc@866 385 string "void uw_db_close(uw_context ctx) {",
adamc@866 386 newline,
adamc@866 387 string "PQfinish(uw_get_db(ctx));",
adamc@866 388 newline,
adamc@866 389 string "}",
adamc@866 390 newline,
adamc@866 391 newline,
adamc@866 392
adamc@866 393 string "int uw_db_begin(uw_context ctx) {",
adamc@866 394 newline,
adamc@866 395 string "PGconn *conn = uw_get_db(ctx);",
adamc@866 396 newline,
adamc@866 397 string "PGresult *res = PQexec(conn, \"BEGIN ISOLATION LEVEL SERIALIZABLE\");",
adamc@866 398 newline,
adamc@866 399 newline,
adamc@866 400 string "if (res == NULL) return 1;",
adamc@866 401 newline,
adamc@866 402 newline,
adamc@866 403 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adamc@866 404 box [string "PQclear(res);",
adamc@866 405 newline,
adamc@866 406 string "return 1;",
adamc@866 407 newline],
adamc@866 408 string "}",
adamc@866 409 newline,
adamc@866 410 string "return 0;",
adamc@866 411 newline,
adamc@866 412 string "}",
adamc@866 413 newline,
adamc@866 414 newline,
adamc@866 415
adamc@866 416 string "int uw_db_commit(uw_context ctx) {",
adamc@866 417 newline,
adamc@866 418 string "PGconn *conn = uw_get_db(ctx);",
adamc@866 419 newline,
adamc@866 420 string "PGresult *res = PQexec(conn, \"COMMIT\");",
adamc@866 421 newline,
adamc@866 422 newline,
adamc@866 423 string "if (res == NULL) return 1;",
adamc@866 424 newline,
adamc@866 425 newline,
adamc@866 426 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adamc@866 427 box [string "PQclear(res);",
adamc@866 428 newline,
adamc@866 429 string "return 1;",
adamc@866 430 newline],
adamc@866 431 string "}",
adamc@866 432 newline,
adamc@866 433 string "return 0;",
adamc@866 434 newline,
adamc@866 435 string "}",
adamc@866 436 newline,
adamc@866 437 newline,
adamc@866 438
adamc@866 439 string "int uw_db_rollback(uw_context ctx) {",
adamc@866 440 newline,
adamc@866 441 string "PGconn *conn = uw_get_db(ctx);",
adamc@866 442 newline,
adamc@866 443 string "PGresult *res = PQexec(conn, \"ROLLBACK\");",
adamc@866 444 newline,
adamc@866 445 newline,
adamc@866 446 string "if (res == NULL) return 1;",
adamc@866 447 newline,
adamc@866 448 newline,
adamc@866 449 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adamc@866 450 box [string "PQclear(res);",
adamc@866 451 newline,
adamc@866 452 string "return 1;",
adamc@866 453 newline],
adamc@866 454 string "}",
adamc@866 455 newline,
adamc@866 456 string "return 0;",
adamc@866 457 newline,
adamc@866 458 string "}",
adamc@866 459 newline,
adamc@866 460 newline]
adamc@866 461 else
adamc@870 462 box [string "static void uw_db_validate(uw_context ctx) { }",
adamc@870 463 newline,
adamc@870 464 string "static void uw_db_prepare(uw_context ctx) { }"],
adamc@870 465
adamc@866 466 newline,
adamc@866 467 newline,
adamc@866 468
adamc@866 469 string "void uw_db_init(uw_context ctx) {",
adamc@866 470 newline,
adamc@866 471 string "PGconn *conn = PQconnectdb(\"",
adamc@866 472 string (String.toString dbstring),
adamc@866 473 string "\");",
adamc@866 474 newline,
adamc@866 475 string "if (conn == NULL) uw_error(ctx, FATAL, ",
adamc@866 476 string "\"libpq can't allocate a connection.\");",
adamc@866 477 newline,
adamc@866 478 string "if (PQstatus(conn) != CONNECTION_OK) {",
adamc@866 479 newline,
adamc@866 480 box [string "char msg[1024];",
adamc@866 481 newline,
adamc@866 482 string "strncpy(msg, PQerrorMessage(conn), 1024);",
adamc@866 483 newline,
adamc@866 484 string "msg[1023] = 0;",
adamc@866 485 newline,
adamc@866 486 string "PQfinish(conn);",
adamc@866 487 newline,
adamc@866 488 string "uw_error(ctx, BOUNDED_RETRY, ",
adamc@866 489 string "\"Connection to Postgres server failed: %s\", msg);"],
adamc@866 490 newline,
adamc@866 491 string "}",
adamc@866 492 newline,
adamc@866 493 string "uw_set_db(ctx, conn);",
adamc@866 494 newline,
adamc@866 495 string "uw_db_validate(ctx);",
adamc@866 496 newline,
adamc@866 497 string "uw_db_prepare(ctx);",
adamc@866 498 newline,
adamc@866 499 string "}"]
adamc@866 500
adamc@880 501 fun p_getcol {loc, wontLeakStrings, col = i, typ = t} =
adamc@867 502 let
adamc@867 503 fun p_unsql t e eLen =
adamc@867 504 case t of
adamc@867 505 Int => box [string "uw_Basis_stringToInt_error(ctx, ", e, string ")"]
adamc@867 506 | Float => box [string "uw_Basis_stringToFloat_error(ctx, ", e, string ")"]
adamc@867 507 | String =>
adamc@867 508 if wontLeakStrings then
adamc@867 509 e
adamc@867 510 else
adamc@867 511 box [string "uw_strdup(ctx, ", e, string ")"]
adamc@1011 512 | Char => box [e, string "[0]"]
adamc@867 513 | Bool => box [string "uw_Basis_stringToBool_error(ctx, ", e, string ")"]
adamc@939 514 | Time => box [string "uw_Basis_unsqlTime(ctx, ", e, string ")"]
adamc@867 515 | Blob => box [string "uw_Basis_stringToBlob_error(ctx, ",
adamc@867 516 e,
adamc@867 517 string ", ",
adamc@867 518 eLen,
adamc@867 519 string ")"]
adamc@867 520 | Channel => box [string "uw_Basis_stringToChannel_error(ctx, ", e, string ")"]
adamc@867 521 | Client => box [string "uw_Basis_stringToClient_error(ctx, ", e, string ")"]
adamc@867 522
adamc@867 523 | Nullable _ => raise Fail "Postgres: Recursive Nullable"
adamc@867 524
adamc@867 525 fun getter t =
adamc@867 526 case t of
adamc@867 527 Nullable t =>
adamc@867 528 box [string "(PQgetisnull(res, i, ",
adamc@867 529 string (Int.toString i),
adamc@867 530 string ") ? NULL : ",
adamc@867 531 case t of
adamc@867 532 String => getter t
adamc@867 533 | _ => box [string "({",
adamc@867 534 newline,
adamc@874 535 string (p_sql_ctype t),
adamc@867 536 space,
adamc@867 537 string "*tmp = uw_malloc(ctx, sizeof(",
adamc@874 538 string (p_sql_ctype t),
adamc@867 539 string "));",
adamc@867 540 newline,
adamc@867 541 string "*tmp = ",
adamc@867 542 getter t,
adamc@867 543 string ";",
adamc@867 544 newline,
adamc@867 545 string "tmp;",
adamc@867 546 newline,
adamc@867 547 string "})"],
adamc@867 548 string ")"]
adamc@867 549 | _ =>
adamc@867 550 box [string "(PQgetisnull(res, i, ",
adamc@867 551 string (Int.toString i),
adamc@867 552 string ") ? ",
adamc@867 553 box [string "({",
adamc@874 554 string (p_sql_ctype t),
adamc@867 555 space,
adamc@867 556 string "tmp;",
adamc@867 557 newline,
adamc@880 558 string "uw_error(ctx, FATAL, \"",
adamc@880 559 string (ErrorMsg.spanToString loc),
adamc@880 560 string ": Unexpectedly NULL field #",
adamc@867 561 string (Int.toString i),
adamc@867 562 string "\");",
adamc@867 563 newline,
adamc@867 564 string "tmp;",
adamc@867 565 newline,
adamc@867 566 string "})"],
adamc@867 567 string " : ",
adamc@867 568 p_unsql t
adamc@867 569 (box [string "PQgetvalue(res, i, ",
adamc@867 570 string (Int.toString i),
adamc@867 571 string ")"])
adamc@867 572 (box [string "PQgetlength(res, i, ",
adamc@867 573 string (Int.toString i),
adamc@867 574 string ")"]),
adamc@867 575 string ")"]
adamc@867 576 in
adamc@867 577 getter t
adamc@867 578 end
adamc@867 579
adamc@873 580 fun queryCommon {loc, query, cols, doCols} =
adamc@867 581 box [string "int n, i;",
adamc@867 582 newline,
adamc@867 583 newline,
adamc@867 584
adamc@867 585 string "if (res == NULL) uw_error(ctx, FATAL, \"Out of memory allocating query result.\");",
adamc@867 586 newline,
adamc@867 587 newline,
adamc@867 588
adamc@867 589 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@867 590 newline,
adamc@867 591 box [string "PQclear(res);",
adamc@867 592 newline,
adamc@867 593 string "uw_error(ctx, FATAL, \"",
adamc@867 594 string (ErrorMsg.spanToString loc),
adamc@867 595 string ": Query failed:\\n%s\\n%s\", ",
adamc@867 596 query,
adamc@867 597 string ", PQerrorMessage(conn));",
adamc@867 598 newline],
adamc@867 599 string "}",
adamc@867 600 newline,
adamc@867 601 newline,
adamc@867 602
adamc@867 603 string "if (PQnfields(res) != ",
adamc@873 604 string (Int.toString (length cols)),
adamc@867 605 string ") {",
adamc@867 606 newline,
adamc@867 607 box [string "int nf = PQnfields(res);",
adamc@867 608 newline,
adamc@867 609 string "PQclear(res);",
adamc@867 610 newline,
adamc@867 611 string "uw_error(ctx, FATAL, \"",
adamc@867 612 string (ErrorMsg.spanToString loc),
adamc@867 613 string ": Query returned %d columns instead of ",
adamc@873 614 string (Int.toString (length cols)),
adamc@867 615 string ":\\n%s\\n%s\", nf, ",
adamc@867 616 query,
adamc@867 617 string ", PQerrorMessage(conn));",
adamc@867 618 newline],
adamc@867 619 string "}",
adamc@867 620 newline,
adamc@867 621 newline,
adamc@867 622
adamc@867 623 string "uw_end_region(ctx);",
adamc@867 624 newline,
adamc@867 625 string "uw_push_cleanup(ctx, (void (*)(void *))PQclear, res);",
adamc@867 626 newline,
adamc@867 627 string "n = PQntuples(res);",
adamc@867 628 newline,
adamc@867 629 string "for (i = 0; i < n; ++i) {",
adamc@867 630 newline,
adamc@867 631 doCols p_getcol,
adamc@867 632 string "}",
adamc@867 633 newline,
adamc@867 634 newline,
adamc@867 635 string "uw_pop_cleanup(ctx);",
adamc@867 636 newline]
adamc@867 637
adamc@873 638 fun query {loc, cols, doCols} =
adamc@867 639 box [string "PGconn *conn = uw_get_db(ctx);",
adamc@867 640 newline,
adamc@867 641 string "PGresult *res = PQexecParams(conn, query, 0, NULL, NULL, NULL, NULL, 0);",
adamc@867 642 newline,
adamc@867 643 newline,
adamc@873 644 queryCommon {loc = loc, cols = cols, doCols = doCols, query = string "query"}]
adamc@867 645
adamc@867 646 fun p_ensql t e =
adamc@867 647 case t of
adamc@867 648 Int => box [string "uw_Basis_attrifyInt(ctx, ", e, string ")"]
adamc@867 649 | Float => box [string "uw_Basis_attrifyFloat(ctx, ", e, string ")"]
adamc@867 650 | String => e
adamc@1011 651 | Char => box [string "uw_Basis_attrifyChar(ctx, ", e, string ")"]
adamc@867 652 | Bool => box [string "(", e, string " ? \"TRUE\" : \"FALSE\")"]
adamc@867 653 | Time => box [string "uw_Basis_attrifyTime(ctx, ", e, string ")"]
adamc@867 654 | Blob => box [e, string ".data"]
adamc@867 655 | Channel => box [string "uw_Basis_attrifyChannel(ctx, ", e, string ")"]
adamc@867 656 | Client => box [string "uw_Basis_attrifyClient(ctx, ", e, string ")"]
adamc@867 657 | Nullable String => e
adamc@867 658 | Nullable t => box [string "(",
adamc@867 659 e,
adamc@867 660 string " == NULL ? NULL : ",
adamc@867 661 p_ensql t (box [string "(*", e, string ")"]),
adamc@867 662 string ")"]
adamc@867 663
adamc@879 664 fun queryPrepared {loc, id, query, inputs, cols, doCols, nested = _} =
adamc@867 665 box [string "PGconn *conn = uw_get_db(ctx);",
adamc@867 666 newline,
adamc@867 667 string "const int paramFormats[] = { ",
adamc@867 668 p_list_sep (box [string ",", space])
adamc@867 669 (fn t => if isBlob t then string "1" else string "0") inputs,
adamc@867 670 string " };",
adamc@867 671 newline,
adamc@867 672 string "const int paramLengths[] = { ",
adamc@867 673 p_list_sepi (box [string ",", space])
adamc@867 674 (fn i => fn Blob => string ("arg" ^ Int.toString (i + 1) ^ ".size")
adamc@867 675 | Nullable Blob => string ("arg" ^ Int.toString (i + 1)
adamc@867 676 ^ "?arg" ^ Int.toString (i + 1) ^ "->size:0")
adamc@867 677 | _ => string "0") inputs,
adamc@867 678 string " };",
adamc@867 679 newline,
adamc@867 680 string "const char *paramValues[] = { ",
adamc@867 681 p_list_sepi (box [string ",", space])
adamc@867 682 (fn i => fn t => p_ensql t (box [string "arg",
adamc@867 683 string (Int.toString (i + 1))]))
adamc@867 684 inputs,
adamc@867 685 string " };",
adamc@867 686 newline,
adamc@867 687 newline,
adamc@867 688 string "PGresult *res = ",
adamc@867 689 if #persistent (Settings.currentProtocol ()) then
adamc@867 690 box [string "PQexecPrepared(conn, \"uw",
adamc@867 691 string (Int.toString id),
adamc@867 692 string "\", ",
adamc@867 693 string (Int.toString (length inputs)),
adamc@867 694 string ", paramValues, paramLengths, paramFormats, 0);"]
adamc@867 695 else
adamc@867 696 box [string "PQexecParams(conn, \"",
adamc@867 697 string (String.toString query),
adamc@867 698 string "\", ",
adamc@867 699 string (Int.toString (length inputs)),
adamc@867 700 string ", NULL, paramValues, paramLengths, paramFormats, 0);"],
adamc@867 701 newline,
adamc@867 702 newline,
adamc@873 703 queryCommon {loc = loc, cols = cols, doCols = doCols, query = box [string "\"",
adamc@873 704 string (String.toString query),
adamc@873 705 string "\""]}]
adamc@867 706
adamc@868 707 fun dmlCommon {loc, dml} =
adamc@868 708 box [string "if (res == NULL) uw_error(ctx, FATAL, \"Out of memory allocating DML result.\");",
adamc@868 709 newline,
adamc@868 710 newline,
adamc@868 711
adamc@868 712 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adamc@868 713 newline,
adamc@868 714 box [string "if (!strcmp(PQresultErrorField(res, PG_DIAG_SQLSTATE), \"40001\")) {",
adamc@868 715 box [newline,
adamc@868 716 string "PQclear(res);",
adamc@868 717 newline,
adamc@868 718 string "uw_error(ctx, UNLIMITED_RETRY, \"Serialization failure\");",
adamc@868 719 newline],
adamc@868 720 string "}",
adamc@868 721 newline,
adamc@868 722 string "PQclear(res);",
adamc@868 723 newline,
adamc@868 724 string "uw_error(ctx, FATAL, \"",
adamc@868 725 string (ErrorMsg.spanToString loc),
adamc@868 726 string ": DML failed:\\n%s\\n%s\", ",
adamc@868 727 dml,
adamc@868 728 string ", PQerrorMessage(conn));",
adamc@868 729 newline],
adamc@868 730 string "}",
adamc@868 731 newline,
adamc@868 732 newline,
adamc@868 733
adamc@868 734 string "PQclear(res);",
adamc@868 735 newline]
adamc@868 736
adamc@868 737 fun dml loc =
adamc@868 738 box [string "PGconn *conn = uw_get_db(ctx);",
adamc@868 739 newline,
adamc@868 740 string "PGresult *res = PQexecParams(conn, dml, 0, NULL, NULL, NULL, NULL, 0);",
adamc@868 741 newline,
adamc@868 742 newline,
adamc@868 743 dmlCommon {loc = loc, dml = string "dml"}]
adamc@868 744
adamc@868 745 fun dmlPrepared {loc, id, dml, inputs} =
adamc@868 746 box [string "PGconn *conn = uw_get_db(ctx);",
adamc@868 747 newline,
adamc@868 748 string "const int paramFormats[] = { ",
adamc@868 749 p_list_sep (box [string ",", space])
adamc@868 750 (fn t => if isBlob t then string "1" else string "0") inputs,
adamc@868 751 string " };",
adamc@868 752 newline,
adamc@868 753 string "const int paramLengths[] = { ",
adamc@868 754 p_list_sepi (box [string ",", space])
adamc@868 755 (fn i => fn Blob => string ("arg" ^ Int.toString (i + 1) ^ ".size")
adamc@868 756 | Nullable Blob => string ("arg" ^ Int.toString (i + 1)
adamc@868 757 ^ "?arg" ^ Int.toString (i + 1) ^ "->size:0")
adamc@868 758 | _ => string "0") inputs,
adamc@868 759 string " };",
adamc@868 760 newline,
adamc@868 761 string "const char *paramValues[] = { ",
adamc@868 762 p_list_sepi (box [string ",", space])
adamc@868 763 (fn i => fn t => p_ensql t (box [string "arg",
adamc@868 764 string (Int.toString (i + 1))]))
adamc@868 765 inputs,
adamc@868 766 string " };",
adamc@868 767 newline,
adamc@868 768 newline,
adamc@868 769 string "PGresult *res = ",
adamc@868 770 if #persistent (Settings.currentProtocol ()) then
adamc@868 771 box [string "PQexecPrepared(conn, \"uw",
adamc@868 772 string (Int.toString id),
adamc@868 773 string "\", ",
adamc@868 774 string (Int.toString (length inputs)),
adamc@868 775 string ", paramValues, paramLengths, paramFormats, 0);"]
adamc@868 776 else
adamc@868 777 box [string "PQexecParams(conn, \"",
adamc@868 778 string (String.toString dml),
adamc@868 779 string "\", ",
adamc@868 780 string (Int.toString (length inputs)),
adamc@868 781 string ", NULL, paramValues, paramLengths, paramFormats, 0);"],
adamc@868 782 newline,
adamc@868 783 newline,
adamc@868 784 dmlCommon {loc = loc, dml = box [string "\"",
adamc@868 785 string (String.toString dml),
adamc@868 786 string "\""]}]
adamc@868 787
adamc@869 788 fun nextvalCommon {loc, query} =
adamc@869 789 box [string "if (res == NULL) uw_error(ctx, FATAL, \"Out of memory allocating nextval result.\");",
adamc@869 790 newline,
adamc@869 791 newline,
adamc@869 792
adamc@869 793 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@869 794 newline,
adamc@869 795 box [string "PQclear(res);",
adamc@869 796 newline,
adamc@869 797 string "uw_error(ctx, FATAL, \"",
adamc@869 798 string (ErrorMsg.spanToString loc),
adamc@869 799 string ": Query failed:\\n%s\\n%s\", ",
adamc@869 800 query,
adamc@869 801 string ", PQerrorMessage(conn));",
adamc@869 802 newline],
adamc@869 803 string "}",
adamc@869 804 newline,
adamc@869 805 newline,
adamc@869 806
adamc@869 807 string "n = PQntuples(res);",
adamc@869 808 newline,
adamc@869 809 string "if (n != 1) {",
adamc@869 810 newline,
adamc@869 811 box [string "PQclear(res);",
adamc@869 812 newline,
adamc@869 813 string "uw_error(ctx, FATAL, \"",
adamc@869 814 string (ErrorMsg.spanToString loc),
adamc@869 815 string ": Wrong number of result rows:\\n%s\\n%s\", ",
adamc@869 816 query,
adamc@869 817 string ", PQerrorMessage(conn));",
adamc@869 818 newline],
adamc@869 819 string "}",
adamc@869 820 newline,
adamc@869 821 newline,
adamc@869 822
adamc@869 823 string "n = uw_Basis_stringToInt_error(ctx, PQgetvalue(res, 0, 0));",
adamc@869 824 newline,
adamc@869 825 string "PQclear(res);",
adamc@869 826 newline]
adamc@869 827
adamc@878 828 open Cjr
adamc@878 829
adamc@878 830 fun nextval {loc, seqE, seqName} =
adamc@878 831 let
adamc@878 832 val query = case seqName of
adamc@878 833 SOME s =>
adamc@879 834 string ("\"SELECT NEXTVAL('" ^ s ^ "')\"")
adamc@878 835 | _ => box [string "uw_Basis_strcat(ctx, \"SELECT NEXTVAL('\", uw_Basis_strcat(ctx, ",
adamc@878 836 seqE,
adamc@878 837 string ", \"')\"))"]
adamc@878 838 in
adamc@878 839 box [string "char *query = ",
adamc@878 840 query,
adamc@878 841 string ";",
adamc@878 842 newline,
adamc@878 843 string "PGconn *conn = uw_get_db(ctx);",
adamc@878 844 newline,
adamc@878 845 string "PGresult *res = PQexecParams(conn, query, 0, NULL, NULL, NULL, NULL, 0);",
adamc@878 846 newline,
adamc@878 847 newline,
adamc@878 848 nextvalCommon {loc = loc, query = string "query"}]
adamc@878 849 end
adamc@869 850
adamc@869 851 fun nextvalPrepared {loc, id, query} =
adamc@869 852 box [string "PGconn *conn = uw_get_db(ctx);",
adamc@869 853 newline,
adamc@869 854 newline,
adamc@869 855 string "PGresult *res = ",
adamc@869 856 if #persistent (Settings.currentProtocol ()) then
adamc@869 857 box [string "PQexecPrepared(conn, \"uw",
adamc@869 858 string (Int.toString id),
adamc@869 859 string "\", 0, NULL, NULL, NULL, 0);"]
adamc@869 860 else
adamc@869 861 box [string "PQexecParams(conn, \"",
adamc@869 862 string (String.toString query),
adamc@869 863 string "\", 0, NULL, NULL, NULL, NULL, 0);"],
adamc@869 864 newline,
adamc@869 865 newline,
adamc@869 866 nextvalCommon {loc = loc, query = box [string "\"",
adamc@869 867 string (String.toString query),
adamc@869 868 string "\""]}]
adamc@869 869
adamc@874 870 fun sqlifyString s = "E'" ^ String.translate (fn #"'" => "\\'"
adamc@874 871 | #"\\" => "\\\\"
adamc@874 872 | ch =>
adamc@874 873 if Char.isPrint ch then
adamc@874 874 str ch
adamc@874 875 else
adamc@874 876 "\\" ^ StringCvt.padLeft #"0" 3
adamc@874 877 (Int.fmt StringCvt.OCT (ord ch)))
adamc@874 878 (String.toString s) ^ "'::text"
adamc@874 879
adamc@874 880 fun p_cast (s, t) = s ^ "::" ^ p_sql_type t
adamc@874 881
adamc@874 882 fun p_blank (n, t) = p_cast ("$" ^ Int.toString n, t)
adamc@874 883
adamc@866 884 val () = addDbms {name = "postgres",
adamc@866 885 header = "postgresql/libpq-fe.h",
adamc@866 886 link = "-lpq",
adamc@873 887 p_sql_type = p_sql_type,
adamc@867 888 init = init,
adamc@867 889 query = query,
adamc@868 890 queryPrepared = queryPrepared,
adamc@868 891 dml = dml,
adamc@869 892 dmlPrepared = dmlPrepared,
adamc@869 893 nextval = nextval,
adamc@874 894 nextvalPrepared = nextvalPrepared,
adamc@874 895 sqlifyString = sqlifyString,
adamc@874 896 p_cast = p_cast,
adamc@874 897 p_blank = p_blank,
adamc@877 898 supportsDeleteAs = true,
adamc@886 899 supportsUpdateAs = true,
adamc@877 900 createSequence = fn s => "CREATE SEQUENCE " ^ s,
adamc@878 901 textKeysNeedLengths = false,
adamc@879 902 supportsNextval = true,
adamc@882 903 supportsNestedPrepared = true,
adamc@890 904 sqlPrefix = "",
adamc@1014 905 supportsOctetLength = true,
adamc@1014 906 trueString = "TRUE",
adamc@1014 907 falseString = "FALSE"}
adamc@874 908
adamc@866 909 val () = setDbms "postgres"
adamc@866 910
adamc@866 911 end