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annotate src/sqlite.sml @ 885:e6070333d8a8

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demo/sql works with SQLite
author Adam Chlipala <adamc@hcoop.net>
date Fri, 17 Jul 2009 16:29:36 -0400
parents
children 5805fa825fe8
rev   line source
adamc@885 1 (* Copyright (c) 2009, Adam Chlipala
adamc@885 2 * All rights reserved.
adamc@885 3 *
adamc@885 4 * Redistribution and use in source and binary forms, with or without
adamc@885 5 * modification, are permitted provided that the following conditions are met:
adamc@885 6 *
adamc@885 7 * - Redistributions of source code must retain the above copyright notice,
adamc@885 8 * this list of conditions and the following disclaimer.
adamc@885 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@885 10 * this list of conditions and the following disclaimer in the documentation
adamc@885 11 * and/or other materials provided with the distribution.
adamc@885 12 * - The names of contributors may not be used to endorse or promote products
adamc@885 13 * derived from this software without specific prior written permission.
adamc@885 14 *
adamc@885 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@885 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@885 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@885 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@885 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@885 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@885 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@885 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@885 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@885 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@885 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@885 26 *)
adamc@885 27
adamc@885 28 structure SQLite :> SQLITE = struct
adamc@885 29
adamc@885 30 open Settings
adamc@885 31 open Print.PD
adamc@885 32 open Print
adamc@885 33
adamc@885 34 fun p_sql_type t =
adamc@885 35 case t of
adamc@885 36 Int => "integer"
adamc@885 37 | Float => "real"
adamc@885 38 | String => "text"
adamc@885 39 | Bool => "integer"
adamc@885 40 | Time => "integer"
adamc@885 41 | Blob => "blob"
adamc@885 42 | Channel => "integer"
adamc@885 43 | Client => "integer"
adamc@885 44 | Nullable t => p_sql_type t
adamc@885 45
adamc@885 46 val ident = String.translate (fn #"'" => "PRIME"
adamc@885 47 | ch => str ch)
adamc@885 48
adamc@885 49 fun checkRel (table, checkNullable) (s, xts) =
adamc@885 50 let
adamc@885 51 val q = "SELECT COUNT(*) FROM sqlite_master WHERE type = '" ^ table ^ "' AND name = '"
adamc@885 52 ^ s ^ "'"
adamc@885 53 in
adamc@885 54 box [string "if (sqlite3_prepare_v2(conn->conn, \"",
adamc@885 55 string q,
adamc@885 56 string "\", -1, &stmt, NULL) != SQLITE_OK) {",
adamc@885 57 newline,
adamc@885 58 box [string "sqlite3_close(conn->conn);",
adamc@885 59 newline,
adamc@885 60 string "uw_error(ctx, FATAL, \"Query preparation failed:\\n",
adamc@885 61 string q,
adamc@885 62 string "\");",
adamc@885 63 newline],
adamc@885 64 string "}",
adamc@885 65 newline,
adamc@885 66 newline,
adamc@885 67
adamc@885 68 string "while ((res = sqlite3_step(stmt)) == SQLITE_BUSY)",
adamc@885 69 newline,
adamc@885 70 box [string "sleep(1);",
adamc@885 71 newline],
adamc@885 72 newline,
adamc@885 73 string "if (res == SQLITE_DONE) {",
adamc@885 74 newline,
adamc@885 75 box [string "sqlite3_finalize(stmt);",
adamc@885 76 newline,
adamc@885 77 string "sqlite3_close(conn->conn);",
adamc@885 78 newline,
adamc@885 79 string "uw_error(ctx, FATAL, \"No row returned:\\n",
adamc@885 80 string q,
adamc@885 81 string "\");",
adamc@885 82 newline],
adamc@885 83 string "}",
adamc@885 84 newline,
adamc@885 85 newline,
adamc@885 86 string "if (res != SQLITE_ROW) {",
adamc@885 87 newline,
adamc@885 88 box [string "sqlite3_finalize(stmt);",
adamc@885 89 newline,
adamc@885 90 string "sqlite3_close(conn->conn);",
adamc@885 91 newline,
adamc@885 92 string "uw_error(ctx, FATAL, \"Error getting row:\\n",
adamc@885 93 string q,
adamc@885 94 string "\");",
adamc@885 95 newline],
adamc@885 96 string "}",
adamc@885 97 newline,
adamc@885 98 newline,
adamc@885 99
adamc@885 100 string "if (sqlite3_column_count(stmt) != 1) {",
adamc@885 101 newline,
adamc@885 102 box [string "sqlite3_finalize(stmt);",
adamc@885 103 newline,
adamc@885 104 string "sqlite3_close(conn->conn);",
adamc@885 105 newline,
adamc@885 106 string "uw_error(ctx, FATAL, \"Bad column count:\\n",
adamc@885 107 string q,
adamc@885 108 string "\");",
adamc@885 109 newline],
adamc@885 110 string "}",
adamc@885 111 newline,
adamc@885 112 newline,
adamc@885 113
adamc@885 114 string "if (sqlite3_column_int(stmt, 0) != 1) {",
adamc@885 115 newline,
adamc@885 116 box [string "sqlite3_finalize(stmt);",
adamc@885 117 newline,
adamc@885 118 string "sqlite3_close(conn->conn);",
adamc@885 119 newline,
adamc@885 120 string "uw_error(ctx, FATAL, \"Table '",
adamc@885 121 string s,
adamc@885 122 string "' does not exist.\");",
adamc@885 123 newline],
adamc@885 124 string "}",
adamc@885 125 newline,
adamc@885 126 newline,
adamc@885 127 string "sqlite3_finalize(stmt);",
adamc@885 128 newline]
adamc@885 129 end
adamc@885 130
adamc@885 131 fun init {dbstring, prepared = ss, tables, views, sequences} =
adamc@885 132 let
adamc@885 133 val db = ref dbstring
adamc@885 134 in
adamc@885 135 app (fn s =>
adamc@885 136 case String.fields (fn ch => ch = #"=") s of
adamc@885 137 [name, value] =>
adamc@885 138 (case name of
adamc@885 139 "dbname" => db := value
adamc@885 140 | _ => ())
adamc@885 141 | _ => ()) (String.tokens Char.isSpace dbstring);
adamc@885 142
adamc@885 143 box [string "typedef struct {",
adamc@885 144 newline,
adamc@885 145 box [string "sqlite3 *conn;",
adamc@885 146 newline,
adamc@885 147 p_list_sepi (box [])
adamc@885 148 (fn i => fn _ =>
adamc@885 149 box [string "sqlite3_stmt *p",
adamc@885 150 string (Int.toString i),
adamc@885 151 string ";",
adamc@885 152 newline])
adamc@885 153 ss],
adamc@885 154 string "} uw_conn;",
adamc@885 155 newline,
adamc@885 156 newline,
adamc@885 157
adamc@885 158 string "void uw_client_init(void) {",
adamc@885 159 newline,
adamc@885 160 box [string "uw_sqlfmtInt = \"%lld%n\";",
adamc@885 161 newline,
adamc@885 162 string "uw_sqlfmtFloat = \"%g%n\";",
adamc@885 163 newline,
adamc@885 164 string "uw_Estrings = 0;",
adamc@885 165 newline,
adamc@885 166 string "uw_sqlsuffixString = \"\";",
adamc@885 167 newline,
adamc@885 168 string "uw_sqlsuffixBlob = \"\";",
adamc@885 169 newline,
adamc@885 170 string "uw_sqlfmtUint4 = \"%u%n\";",
adamc@885 171 newline],
adamc@885 172 string "}",
adamc@885 173 newline,
adamc@885 174 newline,
adamc@885 175
adamc@885 176 if #persistent (currentProtocol ()) then
adamc@885 177 box [string "static void uw_db_validate(uw_context ctx) {",
adamc@885 178 newline,
adamc@885 179 string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 180 newline,
adamc@885 181 string "sqlite3_stmt *stmt;",
adamc@885 182 newline,
adamc@885 183 string "int res;",
adamc@885 184 newline,
adamc@885 185 newline,
adamc@885 186 p_list_sep newline (checkRel ("table", true)) tables,
adamc@885 187 p_list_sep newline (fn name => checkRel ("table", true)
adamc@885 188 (name, [("id", Settings.Client)])) sequences,
adamc@885 189 p_list_sep newline (checkRel ("view", false)) views,
adamc@885 190 string "}",
adamc@885 191 newline,
adamc@885 192 newline,
adamc@885 193
adamc@885 194 string "static void uw_db_prepare(uw_context ctx) {",
adamc@885 195 newline,
adamc@885 196 string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 197 newline,
adamc@885 198 newline,
adamc@885 199
adamc@885 200 p_list_sepi newline (fn i => fn (s, n) =>
adamc@885 201 let
adamc@885 202 fun uhoh this s args =
adamc@885 203 box [p_list_sepi (box [])
adamc@885 204 (fn j => fn () =>
adamc@885 205 box [string
adamc@885 206 "sqlite3_finalize(conn->p",
adamc@885 207 string (Int.toString j),
adamc@885 208 string ");",
adamc@885 209 newline])
adamc@885 210 (List.tabulate (i, fn _ => ())),
adamc@885 211 box (if this then
adamc@885 212 [string
adamc@885 213 "sqlite3_finalize(conn->p",
adamc@885 214 string (Int.toString i),
adamc@885 215 string ");",
adamc@885 216 newline]
adamc@885 217 else
adamc@885 218 []),
adamc@885 219 string "sqlite3_close(conn->conn);",
adamc@885 220 newline,
adamc@885 221 string "uw_error(ctx, FATAL, \"",
adamc@885 222 string s,
adamc@885 223 string "\"",
adamc@885 224 p_list_sep (box []) (fn s => box [string ", ",
adamc@885 225 string s]) args,
adamc@885 226 string ");",
adamc@885 227 newline]
adamc@885 228 in
adamc@885 229 box [string "if (sqlite3_prepare_v2(conn->conn, \"",
adamc@885 230 string (String.toString s),
adamc@885 231 string "\", -1, &conn->p",
adamc@885 232 string (Int.toString i),
adamc@885 233 string ", NULL) != SQLITE_OK) {",
adamc@885 234 newline,
adamc@885 235 uhoh false ("Error preparing statement: "
adamc@885 236 ^ String.toString s) [],
adamc@885 237 string "}",
adamc@885 238 newline]
adamc@885 239 end)
adamc@885 240 ss,
adamc@885 241
adamc@885 242 string "}"]
adamc@885 243 else
adamc@885 244 box [string "static void uw_db_prepare(uw_context ctx) { }",
adamc@885 245 newline,
adamc@885 246 string "static void uw_db_validate(uw_context ctx) { }"],
adamc@885 247 newline,
adamc@885 248 newline,
adamc@885 249
adamc@885 250 string "void uw_db_init(uw_context ctx) {",
adamc@885 251 newline,
adamc@885 252 string "sqlite3 *sqlite;",
adamc@885 253 newline,
adamc@885 254 string "uw_conn *conn;",
adamc@885 255 newline,
adamc@885 256 newline,
adamc@885 257 string "if (sqlite3_open(\"",
adamc@885 258 string (!db),
adamc@885 259 string "\", &sqlite) != SQLITE_OK) uw_error(ctx, FATAL, ",
adamc@885 260 string "\"Can't open SQLite database.\");",
adamc@885 261 newline,
adamc@885 262 newline,
adamc@885 263 string "conn = calloc(1, sizeof(uw_conn));",
adamc@885 264 newline,
adamc@885 265 string "conn->conn = sqlite;",
adamc@885 266 newline,
adamc@885 267 string "uw_set_db(ctx, conn);",
adamc@885 268 newline,
adamc@885 269 string "uw_db_validate(ctx);",
adamc@885 270 newline,
adamc@885 271 string "uw_db_prepare(ctx);",
adamc@885 272 newline,
adamc@885 273 string "}",
adamc@885 274 newline,
adamc@885 275 newline,
adamc@885 276
adamc@885 277 string "void uw_db_close(uw_context ctx) {",
adamc@885 278 newline,
adamc@885 279 string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 280 newline,
adamc@885 281 p_list_sepi (box [])
adamc@885 282 (fn i => fn _ =>
adamc@885 283 box [string "if (conn->p",
adamc@885 284 string (Int.toString i),
adamc@885 285 string ") sqlite3_finalize(conn->p",
adamc@885 286 string (Int.toString i),
adamc@885 287 string ");",
adamc@885 288 newline])
adamc@885 289 ss,
adamc@885 290 string "sqlite3_close(conn->conn);",
adamc@885 291 newline,
adamc@885 292 string "}",
adamc@885 293 newline,
adamc@885 294 newline,
adamc@885 295
adamc@885 296 string "int uw_db_begin(uw_context ctx) {",
adamc@885 297 newline,
adamc@885 298 string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 299 newline,
adamc@885 300 newline,
adamc@885 301 string "if (sqlite3_exec(conn->conn, \"BEGIN\", NULL, NULL, NULL) == SQLITE_OK)",
adamc@885 302 newline,
adamc@885 303 box [string "return 0;",
adamc@885 304 newline],
adamc@885 305 string "else {",
adamc@885 306 newline,
adamc@885 307 box [string "fprintf(stderr, \"Begin error: %s\\n\", sqlite3_errmsg(conn->conn));",
adamc@885 308 newline,
adamc@885 309 string "return 1;",
adamc@885 310 newline],
adamc@885 311 string "}",
adamc@885 312 newline,
adamc@885 313 string "}",
adamc@885 314 newline,
adamc@885 315 string "int uw_db_commit(uw_context ctx) {",
adamc@885 316 newline,
adamc@885 317 string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 318 newline,
adamc@885 319 string "if (sqlite3_exec(conn->conn, \"COMMIT\", NULL, NULL, NULL) == SQLITE_OK)",
adamc@885 320 newline,
adamc@885 321 box [string "return 0;",
adamc@885 322 newline],
adamc@885 323 string "else {",
adamc@885 324 newline,
adamc@885 325 box [string "fprintf(stderr, \"Commit error: %s\\n\", sqlite3_errmsg(conn->conn));",
adamc@885 326 newline,
adamc@885 327 string "return 1;",
adamc@885 328 newline],
adamc@885 329 string "}",
adamc@885 330 newline,
adamc@885 331 string "}",
adamc@885 332 newline,
adamc@885 333 newline,
adamc@885 334
adamc@885 335 string "int uw_db_rollback(uw_context ctx) {",
adamc@885 336 newline,
adamc@885 337 string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 338 newline,
adamc@885 339 string "if (sqlite3_exec(conn->conn, \"ROLLBACK\", NULL, NULL, NULL) == SQLITE_OK)",
adamc@885 340 newline,
adamc@885 341 box [string "return 0;",
adamc@885 342 newline],
adamc@885 343 string "else {",
adamc@885 344 newline,
adamc@885 345 box [string "fprintf(stderr, \"Rollback error: %s\\n\", sqlite3_errmsg(conn->conn));",
adamc@885 346 newline,
adamc@885 347 string "return 1;",
adamc@885 348 newline],
adamc@885 349 string "}",
adamc@885 350 newline,
adamc@885 351 string "}",
adamc@885 352 newline,
adamc@885 353 newline]
adamc@885 354 end
adamc@885 355
adamc@885 356 fun p_getcol {loc, wontLeakStrings, col = i, typ = t} =
adamc@885 357 let
adamc@885 358 fun p_unsql t =
adamc@885 359 case t of
adamc@885 360 Int => box [string "sqlite3_column_int64(stmt, ", string (Int.toString i), string ")"]
adamc@885 361 | Float => box [string "sqlite3_column_double(stmt, ", string (Int.toString i), string ")"]
adamc@885 362 | String =>
adamc@885 363 if wontLeakStrings then
adamc@885 364 box [string "sqlite3_column_text(stmt, ", string (Int.toString i), string ")"]
adamc@885 365 else
adamc@885 366 box [string "uw_strdup(ctx, sqlite3_column_text(stmt, ", string (Int.toString i), string "))"]
adamc@885 367 | Bool => box [string "(uw_Basis_bool)sqlite3_column_int(stmt, ", string (Int.toString i), string ")"]
adamc@885 368 | Time => box [string "(uw_Basis_time)sqlite3_column_int64(stmt, ", string (Int.toString i), string ")"]
adamc@885 369 | Blob => box [string "({",
adamc@885 370 newline,
adamc@885 371 string "char *data = sqlite3_column_blob(stmt, ",
adamc@885 372 string (Int.toString i),
adamc@885 373 string ");",
adamc@885 374 newline,
adamc@885 375 string "uw_Basis_blob b = {sqlite3_column_bytes(stmt, ",
adamc@885 376 string (Int.toString i),
adamc@885 377 string "), data};",
adamc@885 378 newline,
adamc@885 379 string "b;",
adamc@885 380 newline,
adamc@885 381 string "})"]
adamc@885 382 | Channel => box [string "sqlite3_column_int64(stmt, ", string (Int.toString i), string ")"]
adamc@885 383 | Client => box [string "sqlite3_column_int(stmt, ", string (Int.toString i), string ")"]
adamc@885 384
adamc@885 385 | Nullable _ => raise Fail "Postgres: Recursive Nullable"
adamc@885 386
adamc@885 387 fun getter t =
adamc@885 388 case t of
adamc@885 389 Nullable t =>
adamc@885 390 box [string "(sqlite3_column_type(stmt, ",
adamc@885 391 string (Int.toString i),
adamc@885 392 string ") == SQLITE_NULL ? NULL : ",
adamc@885 393 case t of
adamc@885 394 String => getter t
adamc@885 395 | _ => box [string "({",
adamc@885 396 newline,
adamc@885 397 string (p_sql_ctype t),
adamc@885 398 space,
adamc@885 399 string "*tmp = uw_malloc(ctx, sizeof(",
adamc@885 400 string (p_sql_ctype t),
adamc@885 401 string "));",
adamc@885 402 newline,
adamc@885 403 string "*tmp = ",
adamc@885 404 getter t,
adamc@885 405 string ";",
adamc@885 406 newline,
adamc@885 407 string "tmp;",
adamc@885 408 newline,
adamc@885 409 string "})"],
adamc@885 410 string ")"]
adamc@885 411 | _ =>
adamc@885 412 box [string "(sqlite3_column_type(stmt, ",
adamc@885 413 string (Int.toString i),
adamc@885 414 string ") == SQLITE_NULL ? ",
adamc@885 415 box [string "({",
adamc@885 416 string (p_sql_ctype t),
adamc@885 417 space,
adamc@885 418 string "tmp;",
adamc@885 419 newline,
adamc@885 420 string "uw_error(ctx, FATAL, \"",
adamc@885 421 string (ErrorMsg.spanToString loc),
adamc@885 422 string ": Unexpectedly NULL field #",
adamc@885 423 string (Int.toString i),
adamc@885 424 string "\");",
adamc@885 425 newline,
adamc@885 426 string "tmp;",
adamc@885 427 newline,
adamc@885 428 string "})"],
adamc@885 429 string " : ",
adamc@885 430 p_unsql t,
adamc@885 431 string ")"]
adamc@885 432 in
adamc@885 433 getter t
adamc@885 434 end
adamc@885 435
adamc@885 436 fun queryCommon {loc, query, cols, doCols} =
adamc@885 437 box [string "int r;",
adamc@885 438 newline,
adamc@885 439
adamc@885 440 string "sqlite3_reset(stmt);",
adamc@885 441 newline,
adamc@885 442
adamc@885 443 string "uw_end_region(ctx);",
adamc@885 444 newline,
adamc@885 445 string "while ((r = sqlite3_step(stmt)) == SQLITE_ROW) {",
adamc@885 446 newline,
adamc@885 447 doCols p_getcol,
adamc@885 448 string "}",
adamc@885 449 newline,
adamc@885 450 newline,
adamc@885 451
adamc@885 452 string "if (r == SQLITE_BUSY) {",
adamc@885 453 box [string "sleep(1);",
adamc@885 454 newline,
adamc@885 455 string "uw_error(ctx, UNLIMITED_RETRY, \"Database is busy\");",
adamc@885 456 newline],
adamc@885 457 string "}",
adamc@885 458 newline,
adamc@885 459 newline,
adamc@885 460
adamc@885 461 string "if (r != SQLITE_DONE) uw_error(ctx, FATAL, \"",
adamc@885 462 string (ErrorMsg.spanToString loc),
adamc@885 463 string ": query step failed: %s\\n%s\", ",
adamc@885 464 query,
adamc@885 465 string ", sqlite3_errmsg(conn->conn));",
adamc@885 466 newline,
adamc@885 467 newline]
adamc@885 468
adamc@885 469 fun query {loc, cols, doCols} =
adamc@885 470 box [string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 471 newline,
adamc@885 472 string "sqlite3 *stmt;",
adamc@885 473 newline,
adamc@885 474 newline,
adamc@885 475 string "if (sqlite3_prepare_v2(conn->conn, query, -1, &stmt, NULL) != SQLITE_OK) uw_error(ctx, FATAL, \"Error preparing statement: %s\\n%s\", sqlite3_errmsg(conn->conn));",
adamc@885 476 newline,
adamc@885 477 newline,
adamc@885 478 string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_finalize, stmt);",
adamc@885 479 newline,
adamc@885 480 newline,
adamc@885 481
adamc@885 482 queryCommon {loc = loc, cols = cols, doCols = doCols, query = string "query"},
adamc@885 483
adamc@885 484 string "uw_pop_cleanup(ctx);",
adamc@885 485 newline]
adamc@885 486
adamc@885 487 fun p_inputs loc =
adamc@885 488 p_list_sepi (box [])
adamc@885 489 (fn i => fn t =>
adamc@885 490 let
adamc@885 491 fun bind (t, arg) =
adamc@885 492 case t of
adamc@885 493 Int => box [string "sqlite3_bind_int64(stmt, ",
adamc@885 494 string (Int.toString (i + 1)),
adamc@885 495 string ", ",
adamc@885 496 arg,
adamc@885 497 string ")"]
adamc@885 498 | Float => box [string "sqlite3_bind_double(stmt, ",
adamc@885 499 string (Int.toString (i + 1)),
adamc@885 500 string ", ",
adamc@885 501 arg,
adamc@885 502 string ")"]
adamc@885 503 | String => box [string "sqlite3_bind_text(stmt, ",
adamc@885 504 string (Int.toString (i + 1)),
adamc@885 505 string ", ",
adamc@885 506 arg,
adamc@885 507 string ", -1, SQLITE_TRANSIENT)"]
adamc@885 508 | Bool => box [string "sqlite3_bind_int(stmt, ",
adamc@885 509 string (Int.toString (i + 1)),
adamc@885 510 string ", ",
adamc@885 511 arg,
adamc@885 512 string ")"]
adamc@885 513 | Time => box [string "sqlite3_bind_int64(stmt, ",
adamc@885 514 string (Int.toString (i + 1)),
adamc@885 515 string ", ",
adamc@885 516 arg,
adamc@885 517 string ")"]
adamc@885 518 | Blob => box [string "sqlite3_bind_blob(stmt, ",
adamc@885 519 string (Int.toString (i + 1)),
adamc@885 520 string ", ",
adamc@885 521 arg,
adamc@885 522 string ".data, ",
adamc@885 523 arg,
adamc@885 524 string ".size, SQLITE_TRANSIENT"]
adamc@885 525 | Channel => box [string "sqlite_bind_int64(stmt, ",
adamc@885 526 string (Int.toString (i + 1)),
adamc@885 527 string ", ",
adamc@885 528 arg,
adamc@885 529 string ")"]
adamc@885 530 | Client => box [string "sqlite3_bind_int(stmt, ",
adamc@885 531 string (Int.toString (i + 1)),
adamc@885 532 string ", ",
adamc@885 533 arg,
adamc@885 534 string ")"]
adamc@885 535 | Nullable t => box [string "(",
adamc@885 536 arg,
adamc@885 537 string " == NULL ? sqlite3_bind_null(stmt, ",
adamc@885 538 string (Int.toString (i + 1)),
adamc@885 539 string ") : ",
adamc@885 540 bind (t, case t of
adamc@885 541 String => arg
adamc@885 542 | _ => box [string "(*", arg, string ")"]),
adamc@885 543 string ")"]
adamc@885 544 in
adamc@885 545 box [string "if (",
adamc@885 546 bind (t, box [string "arg", string (Int.toString (i + 1))]),
adamc@885 547 string " != SQLITE_OK) uw_error(ctx, FATAL, \"",
adamc@885 548 string (ErrorMsg.spanToString loc),
adamc@885 549 string ": Error binding parameter #",
adamc@885 550 string (Int.toString (i + 1)),
adamc@885 551 string ": %s\", sqlite3_errmsg(conn->conn));",
adamc@885 552 newline]
adamc@885 553 end)
adamc@885 554
adamc@885 555 fun queryPrepared {loc, id, query, inputs, cols, doCols, nested} =
adamc@885 556 box [string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 557 newline,
adamc@885 558 if nested then
adamc@885 559 box [string "sqlite3_stmt *stmt;",
adamc@885 560 newline]
adamc@885 561 else
adamc@885 562 box [string "sqlite3_stmt *stmt = conn->p",
adamc@885 563 string (Int.toString id),
adamc@885 564 string ";",
adamc@885 565 newline,
adamc@885 566 newline,
adamc@885 567
adamc@885 568 string "if (stmt == NULL) {",
adamc@885 569 newline],
adamc@885 570
adamc@885 571 string "if (sqlite3_prepare_v2(conn->conn, \"",
adamc@885 572 string (String.toString query),
adamc@885 573 string "\", -1, &stmt, NULL) != SQLITE_OK) uw_error(ctx, FATAL, \"Error preparing statement: ",
adamc@885 574 string (String.toString query),
adamc@885 575 string "\\n%s\", sqlite3_errmsg(conn->conn));",
adamc@885 576 newline,
adamc@885 577 if nested then
adamc@885 578 box [string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_finalize, stmt);",
adamc@885 579 newline]
adamc@885 580 else
adamc@885 581 box [string "conn->p",
adamc@885 582 string (Int.toString id),
adamc@885 583 string " = stmt;",
adamc@885 584 newline,
adamc@885 585 string "}",
adamc@885 586 newline,
adamc@885 587 newline,
adamc@885 588 string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_clear_bindings, stmt);",
adamc@885 589 newline,
adamc@885 590 string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_reset, stmt);",
adamc@885 591 newline],
adamc@885 592 newline,
adamc@885 593
adamc@885 594 p_inputs loc inputs,
adamc@885 595 newline,
adamc@885 596
adamc@885 597 queryCommon {loc = loc, cols = cols, doCols = doCols, query = box [string "\"",
adamc@885 598 string (String.toString query),
adamc@885 599 string "\""]},
adamc@885 600
adamc@885 601 string "uw_pop_cleanup(ctx);",
adamc@885 602 newline,
adamc@885 603 if nested then
adamc@885 604 box []
adamc@885 605 else
adamc@885 606 box [string "uw_pop_cleanup(ctx);",
adamc@885 607 newline]]
adamc@885 608
adamc@885 609 fun dmlCommon {loc, dml} =
adamc@885 610 box [string "int r;",
adamc@885 611 newline,
adamc@885 612
adamc@885 613 string "if ((r = sqlite3_step(stmt)) == SQLITE_BUSY) {",
adamc@885 614 box [string "sleep(1);",
adamc@885 615 newline,
adamc@885 616 string "uw_error(ctx, UNLIMITED_RETRY, \"Database is busy\");",
adamc@885 617 newline],
adamc@885 618 string "}",
adamc@885 619 newline,
adamc@885 620 newline,
adamc@885 621
adamc@885 622 string "if (r != SQLITE_DONE) uw_error(ctx, FATAL, \"",
adamc@885 623 string (ErrorMsg.spanToString loc),
adamc@885 624 string ": DML step failed: %s\\n%s\", ",
adamc@885 625 dml,
adamc@885 626 string ", sqlite3_errmsg(conn->conn));",
adamc@885 627 newline]
adamc@885 628
adamc@885 629 fun dml loc =
adamc@885 630 box [string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 631 newline,
adamc@885 632 string "sqlite3 *stmt;",
adamc@885 633 newline,
adamc@885 634 newline,
adamc@885 635 string "if (sqlite3_prepare_v2(conn->conn, dml, -1, &stmt, NULL) != SQLITE_OK) uw_error(ctx, FATAL, \"Error preparing statement: %s\\n%s\", dml, sqlite3_errmsg(conn->conn));",
adamc@885 636 newline,
adamc@885 637 newline,
adamc@885 638 string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_finalize, stmt);",
adamc@885 639 newline,
adamc@885 640 newline,
adamc@885 641
adamc@885 642 dmlCommon {loc = loc, dml = string "dml"},
adamc@885 643
adamc@885 644 string "uw_pop_cleanup(ctx);",
adamc@885 645 newline]
adamc@885 646
adamc@885 647 fun dmlPrepared {loc, id, dml, inputs} =
adamc@885 648 box [string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 649 newline,
adamc@885 650 string "sqlite3_stmt *stmt = conn->p",
adamc@885 651 string (Int.toString id),
adamc@885 652 string ";",
adamc@885 653 newline,
adamc@885 654 newline,
adamc@885 655
adamc@885 656 string "if (stmt == NULL) {",
adamc@885 657 newline,
adamc@885 658 box [string "if (sqlite3_prepare_v2(conn->conn, \"",
adamc@885 659 string (String.toString dml),
adamc@885 660 string "\", -1, &stmt, NULL) != SQLITE_OK) uw_error(ctx, FATAL, \"Error preparing statement: ",
adamc@885 661 string (String.toString dml),
adamc@885 662 string "\\n%s\", sqlite3_errmsg(conn->conn));",
adamc@885 663 newline,
adamc@885 664 string "conn->p",
adamc@885 665 string (Int.toString id),
adamc@885 666 string " = stmt;",
adamc@885 667 newline],
adamc@885 668 string "}",
adamc@885 669 newline,
adamc@885 670
adamc@885 671 string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_clear_bindings, stmt);",
adamc@885 672 newline,
adamc@885 673 string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_reset, stmt);",
adamc@885 674 newline,
adamc@885 675
adamc@885 676 p_inputs loc inputs,
adamc@885 677 newline,
adamc@885 678
adamc@885 679 dmlCommon {loc = loc, dml = box [string "\"",
adamc@885 680 string (String.toString dml),
adamc@885 681 string "\""]},
adamc@885 682
adamc@885 683 string "uw_pop_cleanup(ctx);",
adamc@885 684 newline,
adamc@885 685 string "uw_pop_cleanup(ctx);",
adamc@885 686 newline]
adamc@885 687
adamc@885 688 fun nextval {loc, seqE, seqName} =
adamc@885 689 box [string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 690 newline,
adamc@885 691 string "char *insert = ",
adamc@885 692 case seqName of
adamc@885 693 SOME s => string ("\"INSERT INTO " ^ s ^ " VALUES ()\"")
adamc@885 694 | NONE => box [string "uw_Basis_strcat(ctx, \"INSERT INTO \", uw_Basis_strcat(ctx, ",
adamc@885 695 seqE,
adamc@885 696 string ", \" VALUES ()\"))"],
adamc@885 697 string ";",
adamc@885 698 newline,
adamc@885 699 string "char *delete = ",
adamc@885 700 case seqName of
adamc@885 701 SOME s => string ("\"DELETE FROM " ^ s ^ "\"")
adamc@885 702 | NONE => box [string "uw_Basis_strcat(ctx, \"DELETE FROM \", ",
adamc@885 703 seqE,
adamc@885 704 string ")"],
adamc@885 705 string ";",
adamc@885 706 newline,
adamc@885 707 newline,
adamc@885 708
adamc@885 709 string "if (sqlite3_exec(conn->conn, insert, NULL, NULL, NULL) != SQLITE_OK) uw_error(ctx, FATAL, \"'nextval' INSERT failed\");",
adamc@885 710 newline,
adamc@885 711 string "n = sqlite3_last_insert_rowid(conn->conn);",
adamc@885 712 newline,
adamc@885 713 string "if (sqlite3_exec(conn->conn, delete, NULL, NULL, NULL) != SQLITE_OK) uw_error(ctx, FATAL, \"'nextval' DELETE failed\");",
adamc@885 714 newline]
adamc@885 715
adamc@885 716 fun nextvalPrepared _ = raise Fail "SQLite.nextvalPrepared called"
adamc@885 717
adamc@885 718 fun sqlifyString s = "'" ^ String.translate (fn #"'" => "''"
adamc@885 719 | ch =>
adamc@885 720 if Char.isPrint ch then
adamc@885 721 str ch
adamc@885 722 else
adamc@885 723 (ErrorMsg.error
adamc@885 724 "Non-printing character found in SQL string literal";
adamc@885 725 ""))
adamc@885 726 (String.toString s) ^ "'"
adamc@885 727
adamc@885 728 fun p_cast (s, _) = s
adamc@885 729
adamc@885 730 fun p_blank _ = "?"
adamc@885 731
adamc@885 732 val () = addDbms {name = "sqlite",
adamc@885 733 header = "sqlite3.h",
adamc@885 734 link = "-lsqlite3",
adamc@885 735 init = init,
adamc@885 736 p_sql_type = p_sql_type,
adamc@885 737 query = query,
adamc@885 738 queryPrepared = queryPrepared,
adamc@885 739 dml = dml,
adamc@885 740 dmlPrepared = dmlPrepared,
adamc@885 741 nextval = nextval,
adamc@885 742 nextvalPrepared = nextvalPrepared,
adamc@885 743 sqlifyString = sqlifyString,
adamc@885 744 p_cast = p_cast,
adamc@885 745 p_blank = p_blank,
adamc@885 746 supportsDeleteAs = false,
adamc@885 747 createSequence = fn s => "CREATE TABLE " ^ s ^ " (id INTEGER PRIMARY KEY AUTO INCREMENT)",
adamc@885 748 textKeysNeedLengths = false,
adamc@885 749 supportsNextval = false,
adamc@885 750 supportsNestedPrepared = false,
adamc@885 751 sqlPrefix = ""}
adamc@885 752
adamc@885 753 end