Mercurial > urweb

annotate src/postgres.sml @ 1633:deeeb036c8ed

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Treat [naughtyDebug] as pure for optimization purposes
author Adam Chlipala <adam@chlipala.net>
date Mon, 05 Dec 2011 10:43:06 -0500
parents 8128fcb2d4a4
children 1bfd793e7eb8
rev   line source
adam@1295 1 (* Copyright (c) 2008-2010, 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 (",
adam@1600 73 case String.concatWith " OR "
adam@1600 74 (map (fn (x, t) =>
adam@1600 75 String.concat ["(column_name = 'uw_",
adam@1600 76 CharVector.map
adam@1600 77 Char.toLower (ident x),
adam@1600 78 (case p_sql_type_base t of
adam@1600 79 "bigint" =>
adam@1600 80 "' AND data_type IN ('bigint', 'numeric')"
adam@1600 81 | t =>
adam@1600 82 String.concat ["' AND data_type = '",
adam@1600 83 t,
adam@1600 84 "'"]),
adam@1600 85 if checkNullable then
adam@1600 86 (" AND is_nullable = '"
adam@1600 87 ^ (if isNotNull t then
adam@1600 88 "NO"
adam@1600 89 else
adam@1600 90 "YES")
adam@1600 91 ^ "'")
adam@1600 92 else
adam@1600 93 "",
adam@1600 94 ")"]) xts) of
adam@1600 95 "" => "FALSE"
adam@1600 96 | s => s,
adamc@871 97 ")"]
adamc@871 98
adamc@871 99 val q'' = String.concat ["SELECT COUNT(*) FROM information_schema.columns WHERE table_name = '",
adamc@871 100 sl,
adamc@871 101 "' AND column_name LIKE 'uw_%'"]
adamc@871 102 in
adamc@871 103 box [string "res = PQexec(conn, \"",
adamc@871 104 string q,
adamc@871 105 string "\");",
adamc@871 106 newline,
adamc@871 107 newline,
adamc@871 108 string "if (res == NULL) {",
adamc@871 109 newline,
adamc@871 110 box [string "PQfinish(conn);",
adamc@871 111 newline,
adamc@871 112 string "uw_error(ctx, FATAL, \"Out of memory allocating query result.\");",
adamc@871 113 newline],
adamc@871 114 string "}",
adamc@871 115 newline,
adamc@871 116 newline,
adamc@871 117 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@871 118 newline,
adamc@871 119 box [string "char msg[1024];",
adamc@871 120 newline,
adamc@871 121 string "strncpy(msg, PQerrorMessage(conn), 1024);",
adamc@871 122 newline,
adamc@871 123 string "msg[1023] = 0;",
adamc@871 124 newline,
adamc@871 125 string "PQclear(res);",
adamc@871 126 newline,
adamc@871 127 string "PQfinish(conn);",
adamc@871 128 newline,
adamc@871 129 string "uw_error(ctx, FATAL, \"Query failed:\\n",
adamc@871 130 string q,
adamc@871 131 string "\\n%s\", msg);",
adamc@871 132 newline],
adamc@871 133 string "}",
adamc@871 134 newline,
adamc@871 135 newline,
adamc@871 136 string "if (strcmp(PQgetvalue(res, 0, 0), \"1\")) {",
adamc@871 137 newline,
adamc@871 138 box [string "PQclear(res);",
adamc@871 139 newline,
adamc@871 140 string "PQfinish(conn);",
adamc@871 141 newline,
adamc@871 142 string "uw_error(ctx, FATAL, \"Table '",
adamc@871 143 string s,
adamc@871 144 string "' does not exist.\");",
adamc@871 145 newline],
adamc@871 146 string "}",
adamc@871 147 newline,
adamc@871 148 newline,
adamc@871 149 string "PQclear(res);",
adamc@871 150 newline,
adamc@871 151
adamc@871 152 string "res = PQexec(conn, \"",
adamc@871 153 string q',
adamc@871 154 string "\");",
adamc@871 155 newline,
adamc@871 156 newline,
adamc@871 157 string "if (res == NULL) {",
adamc@871 158 newline,
adamc@871 159 box [string "PQfinish(conn);",
adamc@871 160 newline,
adamc@871 161 string "uw_error(ctx, FATAL, \"Out of memory allocating query result.\");",
adamc@871 162 newline],
adamc@871 163 string "}",
adamc@871 164 newline,
adamc@871 165 newline,
adamc@871 166 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@871 167 newline,
adamc@871 168 box [string "char msg[1024];",
adamc@871 169 newline,
adamc@871 170 string "strncpy(msg, PQerrorMessage(conn), 1024);",
adamc@871 171 newline,
adamc@871 172 string "msg[1023] = 0;",
adamc@871 173 newline,
adamc@871 174 string "PQclear(res);",
adamc@871 175 newline,
adamc@871 176 string "PQfinish(conn);",
adamc@871 177 newline,
adamc@871 178 string "uw_error(ctx, FATAL, \"Query failed:\\n",
adamc@871 179 string q',
adamc@871 180 string "\\n%s\", msg);",
adamc@871 181 newline],
adamc@871 182 string "}",
adamc@871 183 newline,
adamc@871 184 newline,
adamc@871 185 string "if (strcmp(PQgetvalue(res, 0, 0), \"",
adamc@871 186 string (Int.toString (length xts)),
adamc@871 187 string "\")) {",
adamc@871 188 newline,
adamc@871 189 box [string "PQclear(res);",
adamc@871 190 newline,
adamc@871 191 string "PQfinish(conn);",
adamc@871 192 newline,
adamc@871 193 string "uw_error(ctx, FATAL, \"Table '",
adamc@871 194 string s,
adamc@871 195 string "' has the wrong column types.\");",
adamc@871 196 newline],
adamc@871 197 string "}",
adamc@871 198 newline,
adamc@871 199 newline,
adamc@871 200 string "PQclear(res);",
adamc@871 201 newline,
adamc@871 202 newline,
adamc@871 203
adamc@871 204 string "res = PQexec(conn, \"",
adamc@871 205 string q'',
adamc@871 206 string "\");",
adamc@871 207 newline,
adamc@871 208 newline,
adamc@871 209 string "if (res == NULL) {",
adamc@871 210 newline,
adamc@871 211 box [string "PQfinish(conn);",
adamc@871 212 newline,
adamc@871 213 string "uw_error(ctx, FATAL, \"Out of memory allocating query result.\");",
adamc@871 214 newline],
adamc@871 215 string "}",
adamc@871 216 newline,
adamc@871 217 newline,
adamc@871 218 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@871 219 newline,
adamc@871 220 box [string "char msg[1024];",
adamc@871 221 newline,
adamc@871 222 string "strncpy(msg, PQerrorMessage(conn), 1024);",
adamc@871 223 newline,
adamc@871 224 string "msg[1023] = 0;",
adamc@871 225 newline,
adamc@871 226 string "PQclear(res);",
adamc@871 227 newline,
adamc@871 228 string "PQfinish(conn);",
adamc@871 229 newline,
adamc@871 230 string "uw_error(ctx, FATAL, \"Query failed:\\n",
adamc@871 231 string q'',
adamc@871 232 string "\\n%s\", msg);",
adamc@871 233 newline],
adamc@871 234 string "}",
adamc@871 235 newline,
adamc@871 236 newline,
adamc@871 237 string "if (strcmp(PQgetvalue(res, 0, 0), \"",
adamc@871 238 string (Int.toString (length xts)),
adamc@871 239 string "\")) {",
adamc@871 240 newline,
adamc@871 241 box [string "PQclear(res);",
adamc@871 242 newline,
adamc@871 243 string "PQfinish(conn);",
adamc@871 244 newline,
adamc@871 245 string "uw_error(ctx, FATAL, \"Table '",
adamc@871 246 string s,
adamc@871 247 string "' has extra columns.\");",
adamc@871 248 newline],
adamc@871 249 string "}",
adamc@871 250 newline,
adamc@871 251 newline,
adamc@871 252 string "PQclear(res);",
adamc@871 253 newline]
adamc@871 254 end
adamc@871 255
adamc@872 256 fun init {dbstring, prepared = ss, tables, views, sequences} =
adamc@866 257 box [if #persistent (currentProtocol ()) then
adamc@1094 258 box [string "static void uw_db_validate(uw_context ctx) {",
adamc@870 259 newline,
adamc@870 260 string "PGconn *conn = uw_get_db(ctx);",
adamc@870 261 newline,
adamc@870 262 string "PGresult *res;",
adamc@870 263 newline,
adamc@870 264 newline,
adamc@872 265 p_list_sep newline (checkRel ("tables", true)) tables,
adamc@872 266 p_list_sep newline (checkRel ("views", false)) views,
adamc@870 267
adamc@870 268 p_list_sep newline
adamc@870 269 (fn s =>
adamc@870 270 let
adamc@870 271 val sl = CharVector.map Char.toLower s
adamc@870 272
adamc@870 273 val q = "SELECT COUNT(*) FROM pg_class WHERE relname = '"
adamc@870 274 ^ sl ^ "' AND relkind = 'S'"
adamc@870 275 in
adamc@870 276 box [string "res = PQexec(conn, \"",
adamc@870 277 string q,
adamc@870 278 string "\");",
adamc@870 279 newline,
adamc@870 280 newline,
adamc@870 281 string "if (res == NULL) {",
adamc@870 282 newline,
adamc@870 283 box [string "PQfinish(conn);",
adamc@870 284 newline,
adamc@870 285 string "uw_error(ctx, FATAL, \"Out of memory allocating query result.\");",
adamc@870 286 newline],
adamc@870 287 string "}",
adamc@870 288 newline,
adamc@870 289 newline,
adamc@870 290 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@870 291 newline,
adamc@870 292 box [string "char msg[1024];",
adamc@870 293 newline,
adamc@870 294 string "strncpy(msg, PQerrorMessage(conn), 1024);",
adamc@870 295 newline,
adamc@870 296 string "msg[1023] = 0;",
adamc@870 297 newline,
adamc@870 298 string "PQclear(res);",
adamc@870 299 newline,
adamc@870 300 string "PQfinish(conn);",
adamc@870 301 newline,
adamc@870 302 string "uw_error(ctx, FATAL, \"Query failed:\\n",
adamc@870 303 string q,
adamc@870 304 string "\\n%s\", msg);",
adamc@870 305 newline],
adamc@870 306 string "}",
adamc@870 307 newline,
adamc@870 308 newline,
adamc@870 309 string "if (strcmp(PQgetvalue(res, 0, 0), \"1\")) {",
adamc@870 310 newline,
adamc@870 311 box [string "PQclear(res);",
adamc@870 312 newline,
adamc@870 313 string "PQfinish(conn);",
adamc@870 314 newline,
adamc@870 315 string "uw_error(ctx, FATAL, \"Sequence '",
adamc@870 316 string s,
adamc@870 317 string "' does not exist.\");",
adamc@870 318 newline],
adamc@870 319 string "}",
adamc@870 320 newline,
adamc@870 321 newline,
adamc@870 322 string "PQclear(res);",
adamc@870 323 newline]
adamc@870 324 end) sequences,
adamc@870 325
adamc@870 326 string "}",
adamc@870 327
adamc@870 328 string "static void uw_db_prepare(uw_context ctx) {",
adamc@866 329 newline,
adamc@866 330 string "PGconn *conn = uw_get_db(ctx);",
adamc@866 331 newline,
adamc@866 332 string "PGresult *res;",
adamc@866 333 newline,
adamc@866 334 newline,
adamc@866 335
adamc@866 336 p_list_sepi newline (fn i => fn (s, n) =>
adamc@866 337 box [string "res = PQprepare(conn, \"uw",
adamc@866 338 string (Int.toString i),
adamc@866 339 string "\", \"",
adam@1285 340 string (String.toCString s),
adamc@866 341 string "\", ",
adamc@866 342 string (Int.toString n),
adamc@866 343 string ", NULL);",
adamc@866 344 newline,
adamc@866 345 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adamc@866 346 newline,
adamc@866 347 box [string "char msg[1024];",
adamc@866 348 newline,
adamc@866 349 string "strncpy(msg, PQerrorMessage(conn), 1024);",
adamc@866 350 newline,
adamc@866 351 string "msg[1023] = 0;",
adamc@866 352 newline,
adamc@866 353 string "PQclear(res);",
adamc@866 354 newline,
adamc@866 355 string "PQfinish(conn);",
adamc@866 356 newline,
adamc@866 357 string "uw_error(ctx, FATAL, \"Unable to create prepared statement:\\n",
adam@1285 358 string (String.toCString s),
adamc@866 359 string "\\n%s\", msg);",
adamc@866 360 newline],
adamc@866 361 string "}",
adamc@866 362 newline,
adamc@866 363 string "PQclear(res);",
adamc@866 364 newline])
adamc@866 365 ss,
adamc@866 366
adamc@866 367 string "}",
adamc@866 368 newline,
adamc@866 369 newline]
adamc@866 370 else
adamc@870 371 box [string "static void uw_db_validate(uw_context ctx) { }",
adamc@870 372 newline,
adamc@870 373 string "static void uw_db_prepare(uw_context ctx) { }"],
adamc@870 374
adamc@1094 375 string "static void uw_client_init(void) {",
adamc@1094 376 newline,
adamc@1094 377 box [string "uw_sqlfmtInt = \"%lld::int8%n\";",
adamc@1094 378 newline,
adamc@1094 379 string "uw_sqlfmtFloat = \"%g::float8%n\";",
adamc@1094 380 newline,
adamc@1094 381 string "uw_Estrings = 1;",
adamc@1094 382 newline,
adamc@1094 383 string "uw_sqlsuffixString = \"::text\";",
adamc@1094 384 newline,
adamc@1094 385 string "uw_sqlsuffixChar = \"::char\";",
adamc@1094 386 newline,
adamc@1094 387 string "uw_sqlsuffixBlob = \"::bytea\";",
adamc@1094 388 newline,
adamc@1094 389 string "uw_sqlfmtUint4 = \"%u::int4%n\";",
adamc@1094 390 newline],
adamc@1094 391 string "}",
adamc@866 392 newline,
adamc@866 393 newline,
adamc@866 394
adamc@1094 395 string "static void uw_db_close(uw_context ctx) {",
adamc@1094 396 newline,
adamc@1094 397 string "PQfinish(uw_get_db(ctx));",
adamc@1094 398 newline,
adamc@1094 399 string "}",
adamc@1094 400 newline,
adamc@1094 401 newline,
adamc@1094 402
adamc@1094 403 string "static int uw_db_begin(uw_context ctx) {",
adamc@1094 404 newline,
adamc@1094 405 string "PGconn *conn = uw_get_db(ctx);",
adamc@1094 406 newline,
adamc@1094 407 string "PGresult *res = PQexec(conn, \"BEGIN ISOLATION LEVEL SERIALIZABLE\");",
adamc@1094 408 newline,
adamc@1094 409 newline,
adamc@1094 410 string "if (res == NULL) return 1;",
adamc@1094 411 newline,
adamc@1094 412 newline,
adamc@1094 413 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adamc@1094 414 box [string "PQclear(res);",
adamc@1094 415 newline,
adamc@1094 416 string "return 1;",
adamc@1094 417 newline],
adamc@1094 418 string "}",
adamc@1094 419 newline,
adamc@1144 420 string "PQclear(res);",
adamc@1144 421 newline,
adamc@1094 422 string "return 0;",
adamc@1094 423 newline,
adamc@1094 424 string "}",
adamc@1094 425 newline,
adamc@1094 426 newline,
adamc@1094 427
adamc@1094 428 string "static int uw_db_commit(uw_context ctx) {",
adamc@1094 429 newline,
adamc@1094 430 string "PGconn *conn = uw_get_db(ctx);",
adamc@1094 431 newline,
adamc@1094 432 string "PGresult *res = PQexec(conn, \"COMMIT\");",
adamc@1094 433 newline,
adamc@1094 434 newline,
adamc@1094 435 string "if (res == NULL) return 1;",
adamc@1094 436 newline,
adamc@1094 437 newline,
adamc@1094 438 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adamc@1094 439 box [string "PQclear(res);",
adamc@1094 440 newline,
adamc@1094 441 string "return 1;",
adamc@1094 442 newline],
adamc@1094 443 string "}",
adamc@1094 444 newline,
adamc@1144 445 string "PQclear(res);",
adamc@1144 446 newline,
adamc@1094 447 string "return 0;",
adamc@1094 448 newline,
adamc@1094 449 string "}",
adamc@1094 450 newline,
adamc@1094 451 newline,
adamc@1094 452
adamc@1094 453 string "static int uw_db_rollback(uw_context ctx) {",
adamc@1094 454 newline,
adamc@1094 455 string "PGconn *conn = uw_get_db(ctx);",
adamc@1094 456 newline,
adamc@1094 457 string "PGresult *res = PQexec(conn, \"ROLLBACK\");",
adamc@1094 458 newline,
adamc@1094 459 newline,
adamc@1094 460 string "if (res == NULL) return 1;",
adamc@1094 461 newline,
adamc@1094 462 newline,
adamc@1094 463 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adamc@1094 464 box [string "PQclear(res);",
adamc@1094 465 newline,
adamc@1094 466 string "return 1;",
adamc@1094 467 newline],
adamc@1094 468 string "}",
adamc@1094 469 newline,
adamc@1144 470 string "PQclear(res);",
adamc@1144 471 newline,
adamc@1094 472 string "return 0;",
adamc@1094 473 newline,
adamc@1094 474 string "}",
adamc@1094 475
adamc@1094 476 newline,
adamc@1094 477 newline,
adamc@1094 478
adamc@1094 479 string "static void uw_db_init(uw_context ctx) {",
adamc@866 480 newline,
as@1564 481 string "char *env_db_str = getenv(\"URWEB_PQ_CON\");",
as@1564 482 newline,
as@1564 483 string "PGconn *conn = PQconnectdb(env_db_str == NULL ? \"",
adam@1285 484 string (String.toCString dbstring),
as@1564 485 string "\" : env_db_str);",
adamc@866 486 newline,
adamc@866 487 string "if (conn == NULL) uw_error(ctx, FATAL, ",
adamc@866 488 string "\"libpq can't allocate a connection.\");",
adamc@866 489 newline,
adamc@866 490 string "if (PQstatus(conn) != CONNECTION_OK) {",
adamc@866 491 newline,
adamc@866 492 box [string "char msg[1024];",
adamc@866 493 newline,
adamc@866 494 string "strncpy(msg, PQerrorMessage(conn), 1024);",
adamc@866 495 newline,
adamc@866 496 string "msg[1023] = 0;",
adamc@866 497 newline,
adamc@866 498 string "PQfinish(conn);",
adamc@866 499 newline,
adamc@866 500 string "uw_error(ctx, BOUNDED_RETRY, ",
adamc@866 501 string "\"Connection to Postgres server failed: %s\", msg);"],
adamc@866 502 newline,
adamc@866 503 string "}",
adamc@866 504 newline,
adamc@866 505 string "uw_set_db(ctx, conn);",
adamc@866 506 newline,
adamc@866 507 string "uw_db_validate(ctx);",
adamc@866 508 newline,
adamc@866 509 string "uw_db_prepare(ctx);",
adamc@866 510 newline,
adamc@866 511 string "}"]
adamc@866 512
adamc@880 513 fun p_getcol {loc, wontLeakStrings, col = i, typ = t} =
adamc@867 514 let
adamc@867 515 fun p_unsql t e eLen =
adamc@867 516 case t of
adamc@867 517 Int => box [string "uw_Basis_stringToInt_error(ctx, ", e, string ")"]
adamc@867 518 | Float => box [string "uw_Basis_stringToFloat_error(ctx, ", e, string ")"]
adamc@867 519 | String =>
adamc@867 520 if wontLeakStrings then
adamc@867 521 e
adamc@867 522 else
adamc@867 523 box [string "uw_strdup(ctx, ", e, string ")"]
adamc@1011 524 | Char => box [e, string "[0]"]
adamc@867 525 | Bool => box [string "uw_Basis_stringToBool_error(ctx, ", e, string ")"]
adamc@939 526 | Time => box [string "uw_Basis_unsqlTime(ctx, ", e, string ")"]
adamc@867 527 | Blob => box [string "uw_Basis_stringToBlob_error(ctx, ",
adamc@867 528 e,
adamc@867 529 string ", ",
adamc@867 530 eLen,
adamc@867 531 string ")"]
adamc@867 532 | Channel => box [string "uw_Basis_stringToChannel_error(ctx, ", e, string ")"]
adamc@867 533 | Client => box [string "uw_Basis_stringToClient_error(ctx, ", e, string ")"]
adamc@867 534
adamc@867 535 | Nullable _ => raise Fail "Postgres: Recursive Nullable"
adamc@867 536
adamc@867 537 fun getter t =
adamc@867 538 case t of
adamc@867 539 Nullable t =>
adamc@867 540 box [string "(PQgetisnull(res, i, ",
adamc@867 541 string (Int.toString i),
adamc@867 542 string ") ? NULL : ",
adamc@867 543 case t of
adamc@867 544 String => getter t
adamc@867 545 | _ => box [string "({",
adamc@867 546 newline,
adamc@874 547 string (p_sql_ctype t),
adamc@867 548 space,
adamc@867 549 string "*tmp = uw_malloc(ctx, sizeof(",
adamc@874 550 string (p_sql_ctype t),
adamc@867 551 string "));",
adamc@867 552 newline,
adamc@867 553 string "*tmp = ",
adamc@867 554 getter t,
adamc@867 555 string ";",
adamc@867 556 newline,
adamc@867 557 string "tmp;",
adamc@867 558 newline,
adamc@867 559 string "})"],
adamc@867 560 string ")"]
adamc@867 561 | _ =>
adamc@867 562 box [string "(PQgetisnull(res, i, ",
adamc@867 563 string (Int.toString i),
adamc@867 564 string ") ? ",
adamc@867 565 box [string "({",
adamc@874 566 string (p_sql_ctype t),
adamc@867 567 space,
adamc@867 568 string "tmp;",
adamc@867 569 newline,
adamc@880 570 string "uw_error(ctx, FATAL, \"",
adamc@880 571 string (ErrorMsg.spanToString loc),
adamc@880 572 string ": Unexpectedly NULL field #",
adamc@867 573 string (Int.toString i),
adamc@867 574 string "\");",
adamc@867 575 newline,
adamc@867 576 string "tmp;",
adamc@867 577 newline,
adamc@867 578 string "})"],
adamc@867 579 string " : ",
adamc@867 580 p_unsql t
adamc@867 581 (box [string "PQgetvalue(res, i, ",
adamc@867 582 string (Int.toString i),
adamc@867 583 string ")"])
adamc@867 584 (box [string "PQgetlength(res, i, ",
adamc@867 585 string (Int.toString i),
adamc@867 586 string ")"]),
adamc@867 587 string ")"]
adamc@867 588 in
adamc@867 589 getter t
adamc@867 590 end
adamc@867 591
adamc@873 592 fun queryCommon {loc, query, cols, doCols} =
adamc@867 593 box [string "int n, i;",
adamc@867 594 newline,
adamc@867 595 newline,
adamc@867 596
adamc@867 597 string "if (res == NULL) uw_error(ctx, FATAL, \"Out of memory allocating query result.\");",
adamc@867 598 newline,
adamc@867 599 newline,
adamc@867 600
adamc@867 601 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@867 602 newline,
adamc@867 603 box [string "PQclear(res);",
adamc@867 604 newline,
adamc@867 605 string "uw_error(ctx, FATAL, \"",
adamc@867 606 string (ErrorMsg.spanToString loc),
adamc@867 607 string ": Query failed:\\n%s\\n%s\", ",
adamc@867 608 query,
adamc@867 609 string ", PQerrorMessage(conn));",
adamc@867 610 newline],
adamc@867 611 string "}",
adamc@867 612 newline,
adamc@867 613 newline,
adamc@867 614
adamc@867 615 string "if (PQnfields(res) != ",
adamc@873 616 string (Int.toString (length cols)),
adamc@867 617 string ") {",
adamc@867 618 newline,
adamc@867 619 box [string "int nf = PQnfields(res);",
adamc@867 620 newline,
adamc@867 621 string "PQclear(res);",
adamc@867 622 newline,
adamc@867 623 string "uw_error(ctx, FATAL, \"",
adamc@867 624 string (ErrorMsg.spanToString loc),
adamc@867 625 string ": Query returned %d columns instead of ",
adamc@873 626 string (Int.toString (length cols)),
adamc@867 627 string ":\\n%s\\n%s\", nf, ",
adamc@867 628 query,
adamc@867 629 string ", PQerrorMessage(conn));",
adamc@867 630 newline],
adamc@867 631 string "}",
adamc@867 632 newline,
adamc@867 633 newline,
adamc@867 634
adamc@867 635 string "uw_end_region(ctx);",
adamc@867 636 newline,
adamc@867 637 string "uw_push_cleanup(ctx, (void (*)(void *))PQclear, res);",
adamc@867 638 newline,
adamc@867 639 string "n = PQntuples(res);",
adamc@867 640 newline,
adamc@867 641 string "for (i = 0; i < n; ++i) {",
adamc@867 642 newline,
adamc@867 643 doCols p_getcol,
adamc@867 644 string "}",
adamc@867 645 newline,
adamc@867 646 newline,
adamc@867 647 string "uw_pop_cleanup(ctx);",
adamc@867 648 newline]
adamc@867 649
adamc@873 650 fun query {loc, cols, doCols} =
adamc@867 651 box [string "PGconn *conn = uw_get_db(ctx);",
adamc@867 652 newline,
adamc@867 653 string "PGresult *res = PQexecParams(conn, query, 0, NULL, NULL, NULL, NULL, 0);",
adamc@867 654 newline,
adamc@867 655 newline,
adamc@873 656 queryCommon {loc = loc, cols = cols, doCols = doCols, query = string "query"}]
adamc@867 657
adamc@867 658 fun p_ensql t e =
adamc@867 659 case t of
adamc@867 660 Int => box [string "uw_Basis_attrifyInt(ctx, ", e, string ")"]
adamc@867 661 | Float => box [string "uw_Basis_attrifyFloat(ctx, ", e, string ")"]
adamc@867 662 | String => e
adamc@1011 663 | Char => box [string "uw_Basis_attrifyChar(ctx, ", e, string ")"]
adamc@867 664 | Bool => box [string "(", e, string " ? \"TRUE\" : \"FALSE\")"]
adam@1364 665 | Time => box [string "uw_Basis_ensqlTime(ctx, ", e, string ")"]
adamc@867 666 | Blob => box [e, string ".data"]
adamc@867 667 | Channel => box [string "uw_Basis_attrifyChannel(ctx, ", e, string ")"]
adamc@867 668 | Client => box [string "uw_Basis_attrifyClient(ctx, ", e, string ")"]
adamc@867 669 | Nullable String => e
adamc@867 670 | Nullable t => box [string "(",
adamc@867 671 e,
adamc@867 672 string " == NULL ? NULL : ",
adamc@867 673 p_ensql t (box [string "(*", e, string ")"]),
adamc@867 674 string ")"]
adamc@867 675
adam@1431 676 fun makeParams inputs =
adam@1431 677 box [string "static const int paramFormats[] = { ",
adamc@867 678 p_list_sep (box [string ",", space])
adamc@867 679 (fn t => if isBlob t then string "1" else string "0") inputs,
adamc@867 680 string " };",
adamc@867 681 newline,
adam@1431 682 if List.exists isBlob inputs then
adam@1431 683 box [string "const int *paramLengths = uw_malloc(ctx, ",
adam@1431 684 string (Int.toString (length inputs)),
adam@1431 685 string " * sizeof(int));",
adam@1431 686 newline,
adam@1431 687 p_list_sepi (box [])
adam@1431 688 (fn i => fn t =>
adam@1431 689 box [string "paramLengths[",
adam@1431 690 string (Int.toString i),
adam@1431 691 string "] = ",
adam@1431 692 case t of
adam@1431 693 Blob => string ("arg" ^ Int.toString (i + 1) ^ ".size")
adam@1431 694 | Nullable Blob => string ("arg" ^ Int.toString (i + 1)
adam@1431 695 ^ "?arg" ^ Int.toString (i + 1) ^ "->size:0")
adam@1431 696 | _ => string "0",
adam@1431 697 string ";",
adam@1431 698 newline]) inputs,
adam@1431 699 string " };",
adam@1431 700 newline]
adam@1431 701 else
adam@1431 702 box [string "const int *paramLengths = paramFormats;",
adam@1431 703 newline],
adam@1431 704
adam@1431 705 string "const char **paramValues = uw_malloc(ctx, ",
adam@1431 706 string (Int.toString (length inputs)),
adam@1431 707 string " * sizeof(char*));",
adamc@867 708 newline,
adam@1431 709 p_list_sepi (box [])
adam@1431 710 (fn i => fn t => box [string "paramValues[",
adam@1431 711 string (Int.toString i),
adam@1431 712 string "] = ",
adam@1431 713 p_ensql t (box [string "arg",
adam@1431 714 string (Int.toString (i + 1))]),
adam@1431 715 string ";",
adam@1431 716 newline])
adamc@867 717 inputs,
adam@1431 718 newline]
adam@1431 719
adam@1431 720 fun queryPrepared {loc, id, query, inputs, cols, doCols, nested = _} =
adam@1431 721 box [string "PGconn *conn = uw_get_db(ctx);",
adamc@867 722 newline,
adam@1431 723
adam@1431 724 makeParams inputs,
adam@1431 725
adamc@867 726 newline,
adamc@867 727 string "PGresult *res = ",
adamc@867 728 if #persistent (Settings.currentProtocol ()) then
adamc@867 729 box [string "PQexecPrepared(conn, \"uw",
adamc@867 730 string (Int.toString id),
adamc@867 731 string "\", ",
adamc@867 732 string (Int.toString (length inputs)),
adamc@867 733 string ", paramValues, paramLengths, paramFormats, 0);"]
adamc@867 734 else
adamc@867 735 box [string "PQexecParams(conn, \"",
adam@1285 736 string (String.toCString query),
adamc@867 737 string "\", ",
adamc@867 738 string (Int.toString (length inputs)),
adamc@867 739 string ", NULL, paramValues, paramLengths, paramFormats, 0);"],
adamc@867 740 newline,
adamc@867 741 newline,
adamc@873 742 queryCommon {loc = loc, cols = cols, doCols = doCols, query = box [string "\"",
adam@1285 743 string (String.toCString query),
adamc@873 744 string "\""]}]
adamc@867 745
adam@1293 746 fun dmlCommon {loc, dml, mode} =
adamc@868 747 box [string "if (res == NULL) uw_error(ctx, FATAL, \"Out of memory allocating DML result.\");",
adamc@868 748 newline,
adamc@868 749 newline,
adamc@868 750
adamc@868 751 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adamc@868 752 newline,
adamc@868 753 box [string "if (!strcmp(PQresultErrorField(res, PG_DIAG_SQLSTATE), \"40001\")) {",
adamc@868 754 box [newline,
adamc@868 755 string "PQclear(res);",
adamc@868 756 newline,
adamc@868 757 string "uw_error(ctx, UNLIMITED_RETRY, \"Serialization failure\");",
adamc@868 758 newline],
adamc@868 759 string "}",
adamc@868 760 newline,
adam@1550 761 string "if (!strcmp(PQresultErrorField(res, PG_DIAG_SQLSTATE), \"40P01\")) {",
adam@1550 762 box [newline,
adam@1550 763 string "PQclear(res);",
adam@1550 764 newline,
adam@1550 765 string "uw_error(ctx, UNLIMITED_RETRY, \"Deadlock detected\");",
adam@1550 766 newline],
adam@1550 767 string "}",
adam@1550 768 newline,
adam@1293 769 case mode of
adam@1293 770 Settings.Error => box [string "PQclear(res);",
adam@1293 771 newline,
adam@1293 772 string "uw_error(ctx, FATAL, \"",
adam@1293 773 string (ErrorMsg.spanToString loc),
adam@1293 774 string ": DML failed:\\n%s\\n%s\", ",
adam@1293 775 dml,
adam@1293 776 string ", PQerrorMessage(conn));"]
adam@1295 777 | Settings.None => box [string "uw_set_error_message(ctx, PQerrorMessage(conn));",
adam@1295 778 newline,
adam@1295 779 newline,
adam@1295 780
adam@1295 781 string "res = PQexec(conn, \"ROLLBACK TO s\");",
adam@1295 782 newline,
adam@1295 783 string "if (res == NULL) uw_error(ctx, FATAL, \"Out of memory allocating DML result.\");",
adam@1295 784 newline,
adam@1295 785 newline,
adam@1295 786
adam@1295 787 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adam@1295 788 newline,
adam@1295 789 box [string "PQclear(res);",
adam@1295 790 newline,
adam@1295 791 string "uw_error(ctx, FATAL, \"",
adam@1295 792 string (ErrorMsg.spanToString loc),
adam@1295 793 string ": ROLLBACK TO failed:\\n%s\\n%s\", ",
adam@1295 794 dml,
adam@1295 795 string ", PQerrorMessage(conn));",
adam@1295 796 newline,
adam@1295 797 string "}"],
adam@1295 798 newline,
adam@1295 799
adam@1295 800 string "PQclear(res);",
adam@1295 801 newline],
adamc@868 802 newline],
adamc@868 803 string "}",
adamc@868 804
adam@1295 805 case mode of
adam@1295 806 Error => box [newline,
adam@1295 807 newline,
adam@1295 808 string "PQclear(res);",
adam@1295 809 newline]
adam@1295 810 | None => box[string " else {",
adam@1295 811 newline,
adam@1295 812 box [string "PQclear(res);",
adam@1295 813 newline,
adam@1295 814 string "res = PQexec(conn, \"RELEASE s\");",
adam@1295 815 newline,
adam@1295 816 string "if (res == NULL) uw_error(ctx, FATAL, \"Out of memory allocating DML result.\");",
adam@1295 817 newline,
adam@1295 818 newline,
adam@1295 819
adam@1295 820 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adam@1295 821 newline,
adam@1295 822 box [string "PQclear(res);",
adam@1295 823 newline,
adam@1295 824 string "uw_error(ctx, FATAL, \"",
adam@1295 825 string (ErrorMsg.spanToString loc),
adam@1295 826 string ": RELEASE failed:\\n%s\\n%s\", ",
adam@1295 827 dml,
adam@1295 828 string ", PQerrorMessage(conn));",
adam@1295 829 newline],
adam@1295 830 string "}",
adam@1295 831 newline,
adam@1295 832 string "PQclear(res);",
adam@1295 833 newline],
adam@1295 834 string "}",
adam@1295 835 newline]]
adam@1295 836
adam@1295 837 fun makeSavepoint mode =
adam@1295 838 case mode of
adam@1295 839 Error => box []
adam@1295 840 | None => box [string "res = PQexec(conn, \"SAVEPOINT s\");",
adam@1295 841 newline,
adam@1295 842 string "if (res == NULL) uw_error(ctx, FATAL, \"Out of memory allocating DML result.\");",
adam@1295 843 newline,
adam@1295 844 newline,
adam@1295 845 string "if (PQresultStatus(res) != PGRES_COMMAND_OK) {",
adam@1295 846 box [newline,
adam@1295 847 string "PQclear(res);",
adam@1295 848 newline,
adam@1295 849 string "uw_error(ctx, FATAL, \"Error creating SAVEPOINT\");",
adam@1295 850 newline],
adam@1295 851 string "}",
adam@1295 852 newline,
adam@1295 853 string "PQclear(res);",
adam@1295 854 newline,
adam@1295 855 newline]
adamc@868 856
adam@1293 857 fun dml (loc, mode) =
adamc@868 858 box [string "PGconn *conn = uw_get_db(ctx);",
adamc@868 859 newline,
adam@1295 860 string "PGresult *res;",
adam@1295 861 newline,
adam@1295 862
adam@1295 863 makeSavepoint mode,
adam@1295 864
adam@1295 865 string "res = PQexecParams(conn, dml, 0, NULL, NULL, NULL, NULL, 0);",
adamc@868 866 newline,
adamc@868 867 newline,
adam@1293 868 dmlCommon {loc = loc, dml = string "dml", mode = mode}]
adamc@868 869
adam@1293 870 fun dmlPrepared {loc, id, dml, inputs, mode} =
adamc@868 871 box [string "PGconn *conn = uw_get_db(ctx);",
adamc@868 872 newline,
adam@1431 873
adam@1431 874 makeParams inputs,
adam@1431 875
adamc@868 876 newline,
adam@1295 877 string "PGresult *res;",
adam@1295 878 newline,
adam@1295 879 newline,
adam@1295 880
adam@1295 881 makeSavepoint mode,
adam@1295 882
adam@1295 883 string "res = ",
adamc@868 884 if #persistent (Settings.currentProtocol ()) then
adamc@868 885 box [string "PQexecPrepared(conn, \"uw",
adamc@868 886 string (Int.toString id),
adamc@868 887 string "\", ",
adamc@868 888 string (Int.toString (length inputs)),
adamc@868 889 string ", paramValues, paramLengths, paramFormats, 0);"]
adamc@868 890 else
adamc@868 891 box [string "PQexecParams(conn, \"",
adam@1285 892 string (String.toCString dml),
adamc@868 893 string "\", ",
adamc@868 894 string (Int.toString (length inputs)),
adamc@868 895 string ", NULL, paramValues, paramLengths, paramFormats, 0);"],
adamc@868 896 newline,
adamc@868 897 newline,
adamc@868 898 dmlCommon {loc = loc, dml = box [string "\"",
adam@1285 899 string (String.toCString dml),
adam@1293 900 string "\""], mode = mode}]
adamc@868 901
adamc@869 902 fun nextvalCommon {loc, query} =
adamc@869 903 box [string "if (res == NULL) uw_error(ctx, FATAL, \"Out of memory allocating nextval result.\");",
adamc@869 904 newline,
adamc@869 905 newline,
adamc@869 906
adamc@869 907 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@869 908 newline,
adamc@869 909 box [string "PQclear(res);",
adamc@869 910 newline,
adamc@869 911 string "uw_error(ctx, FATAL, \"",
adamc@869 912 string (ErrorMsg.spanToString loc),
adamc@869 913 string ": Query failed:\\n%s\\n%s\", ",
adamc@869 914 query,
adamc@869 915 string ", PQerrorMessage(conn));",
adamc@869 916 newline],
adamc@869 917 string "}",
adamc@869 918 newline,
adamc@869 919 newline,
adamc@869 920
adamc@869 921 string "n = PQntuples(res);",
adamc@869 922 newline,
adamc@869 923 string "if (n != 1) {",
adamc@869 924 newline,
adamc@869 925 box [string "PQclear(res);",
adamc@869 926 newline,
adamc@869 927 string "uw_error(ctx, FATAL, \"",
adamc@869 928 string (ErrorMsg.spanToString loc),
adamc@869 929 string ": Wrong number of result rows:\\n%s\\n%s\", ",
adamc@869 930 query,
adamc@869 931 string ", PQerrorMessage(conn));",
adamc@869 932 newline],
adamc@869 933 string "}",
adamc@869 934 newline,
adamc@869 935 newline,
adamc@869 936
adamc@869 937 string "n = uw_Basis_stringToInt_error(ctx, PQgetvalue(res, 0, 0));",
adamc@869 938 newline,
adamc@869 939 string "PQclear(res);",
adamc@869 940 newline]
adamc@869 941
adamc@878 942 open Cjr
adamc@878 943
adamc@878 944 fun nextval {loc, seqE, seqName} =
adamc@878 945 let
adamc@878 946 val query = case seqName of
adamc@878 947 SOME s =>
adamc@879 948 string ("\"SELECT NEXTVAL('" ^ s ^ "')\"")
adamc@878 949 | _ => box [string "uw_Basis_strcat(ctx, \"SELECT NEXTVAL('\", uw_Basis_strcat(ctx, ",
adamc@878 950 seqE,
adamc@878 951 string ", \"')\"))"]
adamc@878 952 in
adamc@878 953 box [string "char *query = ",
adamc@878 954 query,
adamc@878 955 string ";",
adamc@878 956 newline,
adamc@878 957 string "PGconn *conn = uw_get_db(ctx);",
adamc@878 958 newline,
adamc@878 959 string "PGresult *res = PQexecParams(conn, query, 0, NULL, NULL, NULL, NULL, 0);",
adamc@878 960 newline,
adamc@878 961 newline,
adamc@878 962 nextvalCommon {loc = loc, query = string "query"}]
adamc@878 963 end
adamc@869 964
adamc@869 965 fun nextvalPrepared {loc, id, query} =
adamc@869 966 box [string "PGconn *conn = uw_get_db(ctx);",
adamc@869 967 newline,
adamc@869 968 newline,
adamc@869 969 string "PGresult *res = ",
adamc@869 970 if #persistent (Settings.currentProtocol ()) then
adamc@869 971 box [string "PQexecPrepared(conn, \"uw",
adamc@869 972 string (Int.toString id),
adamc@869 973 string "\", 0, NULL, NULL, NULL, 0);"]
adamc@869 974 else
adamc@869 975 box [string "PQexecParams(conn, \"",
adam@1285 976 string (String.toCString query),
adamc@869 977 string "\", 0, NULL, NULL, NULL, NULL, 0);"],
adamc@869 978 newline,
adamc@869 979 newline,
adamc@869 980 nextvalCommon {loc = loc, query = box [string "\"",
adam@1285 981 string (String.toCString query),
adamc@869 982 string "\""]}]
adamc@869 983
adamc@1073 984 fun setvalCommon {loc, query} =
adamc@1073 985 box [string "if (res == NULL) uw_error(ctx, FATAL, \"Out of memory allocating setval result.\");",
adamc@1073 986 newline,
adamc@1073 987 newline,
adamc@1073 988
adamc@1073 989 string "if (PQresultStatus(res) != PGRES_TUPLES_OK) {",
adamc@1073 990 newline,
adamc@1073 991 box [string "PQclear(res);",
adamc@1073 992 newline,
adamc@1073 993 string "uw_error(ctx, FATAL, \"",
adamc@1073 994 string (ErrorMsg.spanToString loc),
adamc@1073 995 string ": Query failed:\\n%s\\n%s\", ",
adamc@1073 996 query,
adamc@1073 997 string ", PQerrorMessage(conn));",
adamc@1073 998 newline],
adamc@1073 999 string "}",
adamc@1073 1000 newline,
adamc@1073 1001 newline,
adamc@1073 1002
adamc@1073 1003 string "PQclear(res);",
adamc@1073 1004 newline]
adamc@1073 1005
adamc@1073 1006 fun setval {loc, seqE, count} =
adamc@1073 1007 let
adamc@1073 1008 val query = box [string "uw_Basis_strcat(ctx, \"SELECT SETVAL('\", uw_Basis_strcat(ctx, ",
adamc@1073 1009 seqE,
adamc@1073 1010 string ", uw_Basis_strcat(ctx, \"', \", uw_Basis_strcat(ctx, uw_Basis_sqlifyInt(ctx, ",
adamc@1073 1011 count,
adamc@1073 1012 string "), \")\"))))"]
adamc@1073 1013 in
adamc@1073 1014 box [string "char *query = ",
adamc@1073 1015 query,
adamc@1073 1016 string ";",
adamc@1073 1017 newline,
adamc@1073 1018 string "PGconn *conn = uw_get_db(ctx);",
adamc@1073 1019 newline,
adamc@1073 1020 string "PGresult *res = PQexecParams(conn, query, 0, NULL, NULL, NULL, NULL, 0);",
adamc@1073 1021 newline,
adamc@1073 1022 newline,
adamc@1073 1023 setvalCommon {loc = loc, query = string "query"}]
adamc@1073 1024 end
adamc@1073 1025
adamc@874 1026 fun sqlifyString s = "E'" ^ String.translate (fn #"'" => "\\'"
adamc@874 1027 | #"\\" => "\\\\"
adamc@874 1028 | ch =>
adamc@874 1029 if Char.isPrint ch then
adamc@874 1030 str ch
adamc@874 1031 else
adamc@874 1032 "\\" ^ StringCvt.padLeft #"0" 3
adamc@874 1033 (Int.fmt StringCvt.OCT (ord ch)))
adam@1285 1034 (String.toCString s) ^ "'::text"
adamc@874 1035
adamc@874 1036 fun p_cast (s, t) = s ^ "::" ^ p_sql_type t
adamc@874 1037
adamc@874 1038 fun p_blank (n, t) = p_cast ("$" ^ Int.toString n, t)
adamc@874 1039
adamc@866 1040 val () = addDbms {name = "postgres",
adam@1464 1041 header = Config.pgheader,
adamc@866 1042 link = "-lpq",
adamc@873 1043 p_sql_type = p_sql_type,
adamc@867 1044 init = init,
adamc@867 1045 query = query,
adamc@868 1046 queryPrepared = queryPrepared,
adamc@868 1047 dml = dml,
adamc@869 1048 dmlPrepared = dmlPrepared,
adamc@869 1049 nextval = nextval,
adamc@874 1050 nextvalPrepared = nextvalPrepared,
adamc@1073 1051 setval = setval,
adamc@874 1052 sqlifyString = sqlifyString,
adamc@874 1053 p_cast = p_cast,
adamc@874 1054 p_blank = p_blank,
adamc@877 1055 supportsDeleteAs = true,
adamc@886 1056 supportsUpdateAs = true,
adamc@877 1057 createSequence = fn s => "CREATE SEQUENCE " ^ s,
adamc@878 1058 textKeysNeedLengths = false,
adamc@879 1059 supportsNextval = true,
adamc@882 1060 supportsNestedPrepared = true,
adamc@890 1061 sqlPrefix = "",
adamc@1014 1062 supportsOctetLength = true,
adamc@1014 1063 trueString = "TRUE",
adamc@1196 1064 falseString = "FALSE",
adamc@1196 1065 onlyUnion = false,
adamc@1196 1066 nestedRelops = true}
adamc@874 1067
adamc@866 1068 val () = setDbms "postgres"
adamc@866 1069
adamc@866 1070 end