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annotate src/sqlite.sml @ 1071:26197c957ad6

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Better record summary error messages; more tweaking SQL usability
author Adam Chlipala <adamc@hcoop.net>
date Sun, 13 Dec 2009 11:28:47 -0500
parents ea9f03ac2710
children b2311dfb3158
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@1014 39 | Char => "text"
adamc@885 40 | Bool => "integer"
adamc@887 41 | Time => "text"
adamc@885 42 | Blob => "blob"
adamc@885 43 | Channel => "integer"
adamc@885 44 | Client => "integer"
adamc@885 45 | Nullable t => p_sql_type t
adamc@885 46
adamc@885 47 val ident = String.translate (fn #"'" => "PRIME"
adamc@885 48 | ch => str ch)
adamc@885 49
adamc@885 50 fun checkRel (table, checkNullable) (s, xts) =
adamc@885 51 let
adamc@885 52 val q = "SELECT COUNT(*) FROM sqlite_master WHERE type = '" ^ table ^ "' AND name = '"
adamc@885 53 ^ s ^ "'"
adamc@885 54 in
adamc@885 55 box [string "if (sqlite3_prepare_v2(conn->conn, \"",
adamc@885 56 string q,
adamc@885 57 string "\", -1, &stmt, NULL) != SQLITE_OK) {",
adamc@885 58 newline,
adamc@885 59 box [string "sqlite3_close(conn->conn);",
adamc@885 60 newline,
adamc@885 61 string "uw_error(ctx, FATAL, \"Query preparation failed:\\n",
adamc@885 62 string q,
adamc@885 63 string "\");",
adamc@885 64 newline],
adamc@885 65 string "}",
adamc@885 66 newline,
adamc@885 67 newline,
adamc@885 68
adamc@885 69 string "while ((res = sqlite3_step(stmt)) == SQLITE_BUSY)",
adamc@885 70 newline,
adamc@885 71 box [string "sleep(1);",
adamc@885 72 newline],
adamc@885 73 newline,
adamc@885 74 string "if (res == SQLITE_DONE) {",
adamc@885 75 newline,
adamc@885 76 box [string "sqlite3_finalize(stmt);",
adamc@885 77 newline,
adamc@885 78 string "sqlite3_close(conn->conn);",
adamc@885 79 newline,
adamc@885 80 string "uw_error(ctx, FATAL, \"No row returned:\\n",
adamc@885 81 string q,
adamc@885 82 string "\");",
adamc@885 83 newline],
adamc@885 84 string "}",
adamc@885 85 newline,
adamc@885 86 newline,
adamc@885 87 string "if (res != SQLITE_ROW) {",
adamc@885 88 newline,
adamc@885 89 box [string "sqlite3_finalize(stmt);",
adamc@885 90 newline,
adamc@885 91 string "sqlite3_close(conn->conn);",
adamc@885 92 newline,
adamc@885 93 string "uw_error(ctx, FATAL, \"Error getting row:\\n",
adamc@885 94 string q,
adamc@885 95 string "\");",
adamc@885 96 newline],
adamc@885 97 string "}",
adamc@885 98 newline,
adamc@885 99 newline,
adamc@885 100
adamc@885 101 string "if (sqlite3_column_count(stmt) != 1) {",
adamc@885 102 newline,
adamc@885 103 box [string "sqlite3_finalize(stmt);",
adamc@885 104 newline,
adamc@885 105 string "sqlite3_close(conn->conn);",
adamc@885 106 newline,
adamc@885 107 string "uw_error(ctx, FATAL, \"Bad column count:\\n",
adamc@885 108 string q,
adamc@885 109 string "\");",
adamc@885 110 newline],
adamc@885 111 string "}",
adamc@885 112 newline,
adamc@885 113 newline,
adamc@885 114
adamc@885 115 string "if (sqlite3_column_int(stmt, 0) != 1) {",
adamc@885 116 newline,
adamc@885 117 box [string "sqlite3_finalize(stmt);",
adamc@885 118 newline,
adamc@885 119 string "sqlite3_close(conn->conn);",
adamc@885 120 newline,
adamc@885 121 string "uw_error(ctx, FATAL, \"Table '",
adamc@885 122 string s,
adamc@885 123 string "' does not exist.\");",
adamc@885 124 newline],
adamc@885 125 string "}",
adamc@885 126 newline,
adamc@885 127 newline,
adamc@885 128 string "sqlite3_finalize(stmt);",
adamc@885 129 newline]
adamc@885 130 end
adamc@885 131
adamc@885 132 fun init {dbstring, prepared = ss, tables, views, sequences} =
adamc@885 133 let
adamc@885 134 val db = ref dbstring
adamc@885 135 in
adamc@885 136 app (fn s =>
adamc@885 137 case String.fields (fn ch => ch = #"=") s of
adamc@885 138 [name, value] =>
adamc@885 139 (case name of
adamc@885 140 "dbname" => db := value
adamc@885 141 | _ => ())
adamc@885 142 | _ => ()) (String.tokens Char.isSpace dbstring);
adamc@885 143
adamc@885 144 box [string "typedef struct {",
adamc@885 145 newline,
adamc@885 146 box [string "sqlite3 *conn;",
adamc@885 147 newline,
adamc@885 148 p_list_sepi (box [])
adamc@885 149 (fn i => fn _ =>
adamc@885 150 box [string "sqlite3_stmt *p",
adamc@885 151 string (Int.toString i),
adamc@885 152 string ";",
adamc@885 153 newline])
adamc@885 154 ss],
adamc@885 155 string "} uw_conn;",
adamc@885 156 newline,
adamc@885 157 newline,
adamc@885 158
adamc@885 159 string "void uw_client_init(void) {",
adamc@885 160 newline,
adamc@885 161 box [string "uw_sqlfmtInt = \"%lld%n\";",
adamc@885 162 newline,
adamc@885 163 string "uw_sqlfmtFloat = \"%g%n\";",
adamc@885 164 newline,
adamc@885 165 string "uw_Estrings = 0;",
adamc@885 166 newline,
adamc@885 167 string "uw_sqlsuffixString = \"\";",
adamc@885 168 newline,
adamc@1011 169 string "uw_sqlsuffixChar = \"\";",
adamc@1011 170 newline,
adamc@885 171 string "uw_sqlsuffixBlob = \"\";",
adamc@885 172 newline,
adamc@885 173 string "uw_sqlfmtUint4 = \"%u%n\";",
adamc@885 174 newline],
adamc@885 175 string "}",
adamc@885 176 newline,
adamc@885 177 newline,
adamc@885 178
adamc@885 179 if #persistent (currentProtocol ()) then
adamc@885 180 box [string "static void uw_db_validate(uw_context ctx) {",
adamc@885 181 newline,
adamc@885 182 string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 183 newline,
adamc@885 184 string "sqlite3_stmt *stmt;",
adamc@885 185 newline,
adamc@885 186 string "int res;",
adamc@885 187 newline,
adamc@885 188 newline,
adamc@885 189 p_list_sep newline (checkRel ("table", true)) tables,
adamc@885 190 p_list_sep newline (fn name => checkRel ("table", true)
adamc@885 191 (name, [("id", Settings.Client)])) sequences,
adamc@885 192 p_list_sep newline (checkRel ("view", false)) views,
adamc@885 193 string "}",
adamc@885 194 newline,
adamc@885 195 newline,
adamc@885 196
adamc@885 197 string "static void uw_db_prepare(uw_context ctx) {",
adamc@885 198 newline,
adamc@885 199 string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 200 newline,
adamc@885 201 newline,
adamc@885 202
adamc@885 203 p_list_sepi newline (fn i => fn (s, n) =>
adamc@885 204 let
adamc@885 205 fun uhoh this s args =
adamc@885 206 box [p_list_sepi (box [])
adamc@885 207 (fn j => fn () =>
adamc@885 208 box [string
adamc@885 209 "sqlite3_finalize(conn->p",
adamc@885 210 string (Int.toString j),
adamc@885 211 string ");",
adamc@885 212 newline])
adamc@885 213 (List.tabulate (i, fn _ => ())),
adamc@885 214 box (if this then
adamc@885 215 [string
adamc@885 216 "sqlite3_finalize(conn->p",
adamc@885 217 string (Int.toString i),
adamc@885 218 string ");",
adamc@885 219 newline]
adamc@885 220 else
adamc@885 221 []),
adamc@885 222 string "sqlite3_close(conn->conn);",
adamc@885 223 newline,
adamc@885 224 string "uw_error(ctx, FATAL, \"",
adamc@885 225 string s,
adamc@885 226 string "\"",
adamc@885 227 p_list_sep (box []) (fn s => box [string ", ",
adamc@885 228 string s]) args,
adamc@885 229 string ");",
adamc@885 230 newline]
adamc@885 231 in
adamc@885 232 box [string "if (sqlite3_prepare_v2(conn->conn, \"",
adamc@885 233 string (String.toString s),
adamc@885 234 string "\", -1, &conn->p",
adamc@885 235 string (Int.toString i),
adamc@885 236 string ", NULL) != SQLITE_OK) {",
adamc@885 237 newline,
adamc@886 238 box [string "char msg[1024];",
adamc@886 239 newline,
adamc@886 240 string "strncpy(msg, sqlite3_errmsg(conn->conn), 1024);",
adamc@886 241 newline,
adamc@886 242 string "msg[1023] = 0;",
adamc@886 243 newline,
adamc@886 244 uhoh false ("Error preparing statement: "
adamc@886 245 ^ String.toString s ^ "\\n%s") ["msg"]],
adamc@885 246 string "}",
adamc@885 247 newline]
adamc@885 248 end)
adamc@885 249 ss,
adamc@885 250
adamc@885 251 string "}"]
adamc@885 252 else
adamc@885 253 box [string "static void uw_db_prepare(uw_context ctx) { }",
adamc@885 254 newline,
adamc@885 255 string "static void uw_db_validate(uw_context ctx) { }"],
adamc@885 256 newline,
adamc@885 257 newline,
adamc@885 258
adamc@885 259 string "void uw_db_init(uw_context ctx) {",
adamc@885 260 newline,
adamc@885 261 string "sqlite3 *sqlite;",
adamc@885 262 newline,
adamc@885 263 string "uw_conn *conn;",
adamc@885 264 newline,
adamc@885 265 newline,
adamc@885 266 string "if (sqlite3_open(\"",
adamc@885 267 string (!db),
adamc@885 268 string "\", &sqlite) != SQLITE_OK) uw_error(ctx, FATAL, ",
adamc@885 269 string "\"Can't open SQLite database.\");",
adamc@885 270 newline,
adamc@885 271 newline,
adamc@885 272 string "conn = calloc(1, sizeof(uw_conn));",
adamc@885 273 newline,
adamc@885 274 string "conn->conn = sqlite;",
adamc@885 275 newline,
adamc@885 276 string "uw_set_db(ctx, conn);",
adamc@885 277 newline,
adamc@885 278 string "uw_db_validate(ctx);",
adamc@885 279 newline,
adamc@885 280 string "uw_db_prepare(ctx);",
adamc@885 281 newline,
adamc@885 282 string "}",
adamc@885 283 newline,
adamc@885 284 newline,
adamc@885 285
adamc@885 286 string "void uw_db_close(uw_context ctx) {",
adamc@885 287 newline,
adamc@885 288 string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 289 newline,
adamc@885 290 p_list_sepi (box [])
adamc@885 291 (fn i => fn _ =>
adamc@885 292 box [string "if (conn->p",
adamc@885 293 string (Int.toString i),
adamc@885 294 string ") sqlite3_finalize(conn->p",
adamc@885 295 string (Int.toString i),
adamc@885 296 string ");",
adamc@885 297 newline])
adamc@885 298 ss,
adamc@885 299 string "sqlite3_close(conn->conn);",
adamc@885 300 newline,
adamc@885 301 string "}",
adamc@885 302 newline,
adamc@885 303 newline,
adamc@885 304
adamc@885 305 string "int uw_db_begin(uw_context ctx) {",
adamc@885 306 newline,
adamc@885 307 string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 308 newline,
adamc@885 309 newline,
adamc@885 310 string "if (sqlite3_exec(conn->conn, \"BEGIN\", NULL, NULL, NULL) == SQLITE_OK)",
adamc@885 311 newline,
adamc@885 312 box [string "return 0;",
adamc@885 313 newline],
adamc@885 314 string "else {",
adamc@885 315 newline,
adamc@885 316 box [string "fprintf(stderr, \"Begin error: %s\\n\", sqlite3_errmsg(conn->conn));",
adamc@885 317 newline,
adamc@885 318 string "return 1;",
adamc@885 319 newline],
adamc@885 320 string "}",
adamc@885 321 newline,
adamc@885 322 string "}",
adamc@885 323 newline,
adamc@885 324 string "int uw_db_commit(uw_context ctx) {",
adamc@885 325 newline,
adamc@885 326 string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 327 newline,
adamc@885 328 string "if (sqlite3_exec(conn->conn, \"COMMIT\", NULL, NULL, NULL) == SQLITE_OK)",
adamc@885 329 newline,
adamc@885 330 box [string "return 0;",
adamc@885 331 newline],
adamc@885 332 string "else {",
adamc@885 333 newline,
adamc@885 334 box [string "fprintf(stderr, \"Commit error: %s\\n\", sqlite3_errmsg(conn->conn));",
adamc@885 335 newline,
adamc@885 336 string "return 1;",
adamc@885 337 newline],
adamc@885 338 string "}",
adamc@885 339 newline,
adamc@885 340 string "}",
adamc@885 341 newline,
adamc@885 342 newline,
adamc@885 343
adamc@885 344 string "int uw_db_rollback(uw_context ctx) {",
adamc@885 345 newline,
adamc@885 346 string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 347 newline,
adamc@885 348 string "if (sqlite3_exec(conn->conn, \"ROLLBACK\", NULL, NULL, NULL) == SQLITE_OK)",
adamc@885 349 newline,
adamc@885 350 box [string "return 0;",
adamc@885 351 newline],
adamc@885 352 string "else {",
adamc@885 353 newline,
adamc@885 354 box [string "fprintf(stderr, \"Rollback error: %s\\n\", sqlite3_errmsg(conn->conn));",
adamc@885 355 newline,
adamc@885 356 string "return 1;",
adamc@885 357 newline],
adamc@885 358 string "}",
adamc@885 359 newline,
adamc@885 360 string "}",
adamc@885 361 newline,
adamc@885 362 newline]
adamc@885 363 end
adamc@885 364
adamc@885 365 fun p_getcol {loc, wontLeakStrings, col = i, typ = t} =
adamc@885 366 let
adamc@885 367 fun p_unsql t =
adamc@885 368 case t of
adamc@885 369 Int => box [string "sqlite3_column_int64(stmt, ", string (Int.toString i), string ")"]
adamc@885 370 | Float => box [string "sqlite3_column_double(stmt, ", string (Int.toString i), string ")"]
adamc@885 371 | String =>
adamc@885 372 if wontLeakStrings then
adamc@1014 373 box [string "(uw_Basis_string)sqlite3_column_text(stmt, ", string (Int.toString i), string ")"]
adamc@885 374 else
adamc@1014 375 box [string "uw_strdup(ctx, (uw_Basis_string)sqlite3_column_text(stmt, ", string (Int.toString i), string "))"]
adamc@1014 376 | Char => box [string "sqlite3_column_text(stmt, ", string (Int.toString i), string ")[0]"]
adamc@885 377 | Bool => box [string "(uw_Basis_bool)sqlite3_column_int(stmt, ", string (Int.toString i), string ")"]
adamc@1014 378 | Time => box [string "uw_Basis_stringToTime_error(ctx, (uw_Basis_string)sqlite3_column_text(stmt, ", string (Int.toString i), string "))"]
adamc@885 379 | Blob => box [string "({",
adamc@885 380 newline,
adamc@890 381 string "char *data = (char *)sqlite3_column_blob(stmt, ",
adamc@885 382 string (Int.toString i),
adamc@885 383 string ");",
adamc@885 384 newline,
adamc@890 385 string "int len = sqlite3_column_bytes(stmt, ",
adamc@885 386 string (Int.toString i),
adamc@890 387 string ");",
adamc@890 388 newline,
adamc@890 389 string "uw_Basis_blob b = {len, uw_memdup(ctx, data, len)};",
adamc@885 390 newline,
adamc@885 391 string "b;",
adamc@885 392 newline,
adamc@885 393 string "})"]
adamc@886 394 | Channel => box [string "({",
adamc@886 395 newline,
adamc@886 396 string "sqlite3_int64 n = sqlite3_column_int64(stmt, ",
adamc@886 397 string (Int.toString i),
adamc@886 398 string ");",
adamc@886 399 newline,
adamc@886 400 string "uw_Basis_channel ch = {n >> 32, n & 0xFFFFFFFF};",
adamc@886 401 newline,
adamc@886 402 string "ch;",
adamc@886 403 newline,
adamc@886 404 string "})"]
adamc@885 405 | Client => box [string "sqlite3_column_int(stmt, ", string (Int.toString i), string ")"]
adamc@885 406
adamc@885 407 | Nullable _ => raise Fail "Postgres: Recursive Nullable"
adamc@885 408
adamc@885 409 fun getter t =
adamc@885 410 case t of
adamc@885 411 Nullable t =>
adamc@885 412 box [string "(sqlite3_column_type(stmt, ",
adamc@885 413 string (Int.toString i),
adamc@885 414 string ") == SQLITE_NULL ? NULL : ",
adamc@885 415 case t of
adamc@885 416 String => getter t
adamc@885 417 | _ => box [string "({",
adamc@885 418 newline,
adamc@885 419 string (p_sql_ctype t),
adamc@885 420 space,
adamc@885 421 string "*tmp = uw_malloc(ctx, sizeof(",
adamc@885 422 string (p_sql_ctype t),
adamc@885 423 string "));",
adamc@885 424 newline,
adamc@885 425 string "*tmp = ",
adamc@885 426 getter t,
adamc@885 427 string ";",
adamc@885 428 newline,
adamc@885 429 string "tmp;",
adamc@885 430 newline,
adamc@885 431 string "})"],
adamc@885 432 string ")"]
adamc@885 433 | _ =>
adamc@885 434 box [string "(sqlite3_column_type(stmt, ",
adamc@885 435 string (Int.toString i),
adamc@885 436 string ") == SQLITE_NULL ? ",
adamc@885 437 box [string "({",
adamc@885 438 string (p_sql_ctype t),
adamc@885 439 space,
adamc@885 440 string "tmp;",
adamc@885 441 newline,
adamc@885 442 string "uw_error(ctx, FATAL, \"",
adamc@885 443 string (ErrorMsg.spanToString loc),
adamc@885 444 string ": Unexpectedly NULL field #",
adamc@885 445 string (Int.toString i),
adamc@885 446 string "\");",
adamc@885 447 newline,
adamc@885 448 string "tmp;",
adamc@885 449 newline,
adamc@885 450 string "})"],
adamc@885 451 string " : ",
adamc@885 452 p_unsql t,
adamc@885 453 string ")"]
adamc@885 454 in
adamc@885 455 getter t
adamc@885 456 end
adamc@885 457
adamc@885 458 fun queryCommon {loc, query, cols, doCols} =
adamc@885 459 box [string "int r;",
adamc@885 460 newline,
adamc@885 461
adamc@885 462 string "sqlite3_reset(stmt);",
adamc@885 463 newline,
adamc@885 464
adamc@885 465 string "uw_end_region(ctx);",
adamc@885 466 newline,
adamc@885 467 string "while ((r = sqlite3_step(stmt)) == SQLITE_ROW) {",
adamc@885 468 newline,
adamc@885 469 doCols p_getcol,
adamc@885 470 string "}",
adamc@885 471 newline,
adamc@885 472 newline,
adamc@885 473
adamc@885 474 string "if (r == SQLITE_BUSY) {",
adamc@885 475 box [string "sleep(1);",
adamc@885 476 newline,
adamc@885 477 string "uw_error(ctx, UNLIMITED_RETRY, \"Database is busy\");",
adamc@885 478 newline],
adamc@885 479 string "}",
adamc@885 480 newline,
adamc@885 481 newline,
adamc@885 482
adamc@885 483 string "if (r != SQLITE_DONE) uw_error(ctx, FATAL, \"",
adamc@885 484 string (ErrorMsg.spanToString loc),
adamc@885 485 string ": query step failed: %s\\n%s\", ",
adamc@885 486 query,
adamc@885 487 string ", sqlite3_errmsg(conn->conn));",
adamc@885 488 newline,
adamc@885 489 newline]
adamc@885 490
adamc@885 491 fun query {loc, cols, doCols} =
adamc@885 492 box [string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 493 newline,
adamc@886 494 string "sqlite3_stmt *stmt;",
adamc@885 495 newline,
adamc@885 496 newline,
adamc@885 497 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@885 498 newline,
adamc@885 499 newline,
adamc@885 500 string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_finalize, stmt);",
adamc@885 501 newline,
adamc@885 502 newline,
adamc@885 503
adamc@885 504 queryCommon {loc = loc, cols = cols, doCols = doCols, query = string "query"},
adamc@885 505
adamc@885 506 string "uw_pop_cleanup(ctx);",
adamc@885 507 newline]
adamc@885 508
adamc@1014 509 val p_pre_inputs =
adamc@1014 510 p_list_sepi (box [])
adamc@1014 511 (fn i => fn t =>
adamc@1014 512 case t of
adamc@1014 513 Char => box [string "char arg",
adamc@1014 514 string (Int.toString (i + 1)),
adamc@1014 515 string "s = {arg",
adamc@1014 516 string (Int.toString (i + 1)),
adamc@1014 517 string ", 0};",
adamc@1014 518 newline]
adamc@1014 519 | _ => box [])
adamc@1014 520
adamc@885 521 fun p_inputs loc =
adamc@885 522 p_list_sepi (box [])
adamc@885 523 (fn i => fn t =>
adamc@885 524 let
adamc@885 525 fun bind (t, arg) =
adamc@885 526 case t of
adamc@885 527 Int => box [string "sqlite3_bind_int64(stmt, ",
adamc@885 528 string (Int.toString (i + 1)),
adamc@885 529 string ", ",
adamc@885 530 arg,
adamc@885 531 string ")"]
adamc@885 532 | Float => box [string "sqlite3_bind_double(stmt, ",
adamc@885 533 string (Int.toString (i + 1)),
adamc@885 534 string ", ",
adamc@885 535 arg,
adamc@1014 536 string ")"]
adamc@885 537 | String => box [string "sqlite3_bind_text(stmt, ",
adamc@885 538 string (Int.toString (i + 1)),
adamc@885 539 string ", ",
adamc@885 540 arg,
adamc@885 541 string ", -1, SQLITE_TRANSIENT)"]
adamc@1014 542 | Char => box [string "sqlite3_bind_text(stmt, ",
adamc@1014 543 string (Int.toString (i + 1)),
adamc@1014 544 string ", ",
adamc@1014 545 arg,
adamc@1014 546 string "s, -1, SQLITE_TRANSIENT)"]
adamc@885 547 | Bool => box [string "sqlite3_bind_int(stmt, ",
adamc@885 548 string (Int.toString (i + 1)),
adamc@885 549 string ", ",
adamc@885 550 arg,
adamc@885 551 string ")"]
adamc@887 552 | Time => box [string "sqlite3_bind_text(stmt, ",
adamc@885 553 string (Int.toString (i + 1)),
adamc@887 554 string ", uw_Basis_attrifyTime(ctx, ",
adamc@885 555 arg,
adamc@887 556 string "), -1, SQLITE_TRANSIENT)"]
adamc@885 557 | Blob => box [string "sqlite3_bind_blob(stmt, ",
adamc@885 558 string (Int.toString (i + 1)),
adamc@885 559 string ", ",
adamc@885 560 arg,
adamc@885 561 string ".data, ",
adamc@885 562 arg,
adamc@890 563 string ".size, SQLITE_TRANSIENT)"]
adamc@886 564 | Channel => box [string "sqlite3_bind_int64(stmt, ",
adamc@885 565 string (Int.toString (i + 1)),
adamc@886 566 string ", ((sqlite3_int64)",
adamc@885 567 arg,
adamc@886 568 string ".cli << 32) | ",
adamc@886 569 arg,
adamc@886 570 string ".chn)"]
adamc@885 571 | Client => box [string "sqlite3_bind_int(stmt, ",
adamc@885 572 string (Int.toString (i + 1)),
adamc@885 573 string ", ",
adamc@885 574 arg,
adamc@885 575 string ")"]
adamc@885 576 | Nullable t => box [string "(",
adamc@885 577 arg,
adamc@885 578 string " == NULL ? sqlite3_bind_null(stmt, ",
adamc@885 579 string (Int.toString (i + 1)),
adamc@885 580 string ") : ",
adamc@885 581 bind (t, case t of
adamc@885 582 String => arg
adamc@885 583 | _ => box [string "(*", arg, string ")"]),
adamc@885 584 string ")"]
adamc@885 585 in
adamc@885 586 box [string "if (",
adamc@885 587 bind (t, box [string "arg", string (Int.toString (i + 1))]),
adamc@885 588 string " != SQLITE_OK) uw_error(ctx, FATAL, \"",
adamc@885 589 string (ErrorMsg.spanToString loc),
adamc@885 590 string ": Error binding parameter #",
adamc@885 591 string (Int.toString (i + 1)),
adamc@885 592 string ": %s\", sqlite3_errmsg(conn->conn));",
adamc@885 593 newline]
adamc@885 594 end)
adamc@885 595
adamc@885 596 fun queryPrepared {loc, id, query, inputs, cols, doCols, nested} =
adamc@885 597 box [string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 598 newline,
adamc@1014 599 p_pre_inputs inputs,
adamc@885 600 if nested then
adamc@885 601 box [string "sqlite3_stmt *stmt;",
adamc@885 602 newline]
adamc@885 603 else
adamc@885 604 box [string "sqlite3_stmt *stmt = conn->p",
adamc@885 605 string (Int.toString id),
adamc@885 606 string ";",
adamc@885 607 newline,
adamc@885 608 newline,
adamc@885 609
adamc@885 610 string "if (stmt == NULL) {",
adamc@885 611 newline],
adamc@885 612
adamc@885 613 string "if (sqlite3_prepare_v2(conn->conn, \"",
adamc@885 614 string (String.toString query),
adamc@885 615 string "\", -1, &stmt, NULL) != SQLITE_OK) uw_error(ctx, FATAL, \"Error preparing statement: ",
adamc@885 616 string (String.toString query),
adamc@885 617 string "\\n%s\", sqlite3_errmsg(conn->conn));",
adamc@885 618 newline,
adamc@885 619 if nested then
adamc@885 620 box [string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_finalize, stmt);",
adamc@885 621 newline]
adamc@885 622 else
adamc@885 623 box [string "conn->p",
adamc@885 624 string (Int.toString id),
adamc@885 625 string " = stmt;",
adamc@885 626 newline,
adamc@885 627 string "}",
adamc@885 628 newline,
adamc@885 629 newline,
adamc@885 630 string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_clear_bindings, stmt);",
adamc@885 631 newline,
adamc@885 632 string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_reset, stmt);",
adamc@885 633 newline],
adamc@885 634 newline,
adamc@885 635
adamc@885 636 p_inputs loc inputs,
adamc@885 637 newline,
adamc@885 638
adamc@885 639 queryCommon {loc = loc, cols = cols, doCols = doCols, query = box [string "\"",
adamc@885 640 string (String.toString query),
adamc@885 641 string "\""]},
adamc@885 642
adamc@885 643 string "uw_pop_cleanup(ctx);",
adamc@885 644 newline,
adamc@885 645 if nested then
adamc@885 646 box []
adamc@885 647 else
adamc@885 648 box [string "uw_pop_cleanup(ctx);",
adamc@885 649 newline]]
adamc@885 650
adamc@885 651 fun dmlCommon {loc, dml} =
adamc@885 652 box [string "int r;",
adamc@885 653 newline,
adamc@885 654
adamc@885 655 string "if ((r = sqlite3_step(stmt)) == SQLITE_BUSY) {",
adamc@885 656 box [string "sleep(1);",
adamc@885 657 newline,
adamc@885 658 string "uw_error(ctx, UNLIMITED_RETRY, \"Database is busy\");",
adamc@885 659 newline],
adamc@885 660 string "}",
adamc@885 661 newline,
adamc@885 662 newline,
adamc@885 663
adamc@885 664 string "if (r != SQLITE_DONE) uw_error(ctx, FATAL, \"",
adamc@885 665 string (ErrorMsg.spanToString loc),
adamc@885 666 string ": DML step failed: %s\\n%s\", ",
adamc@885 667 dml,
adamc@885 668 string ", sqlite3_errmsg(conn->conn));",
adamc@885 669 newline]
adamc@885 670
adamc@885 671 fun dml loc =
adamc@885 672 box [string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 673 newline,
adamc@886 674 string "sqlite3_stmt *stmt;",
adamc@885 675 newline,
adamc@885 676 newline,
adamc@885 677 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@885 678 newline,
adamc@885 679 newline,
adamc@885 680 string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_finalize, stmt);",
adamc@885 681 newline,
adamc@885 682 newline,
adamc@885 683
adamc@885 684 dmlCommon {loc = loc, dml = string "dml"},
adamc@885 685
adamc@885 686 string "uw_pop_cleanup(ctx);",
adamc@885 687 newline]
adamc@885 688
adamc@885 689 fun dmlPrepared {loc, id, dml, inputs} =
adamc@885 690 box [string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 691 newline,
adamc@1014 692 p_pre_inputs inputs,
adamc@885 693 string "sqlite3_stmt *stmt = conn->p",
adamc@885 694 string (Int.toString id),
adamc@885 695 string ";",
adamc@885 696 newline,
adamc@885 697 newline,
adamc@885 698
adamc@885 699 string "if (stmt == NULL) {",
adamc@885 700 newline,
adamc@885 701 box [string "if (sqlite3_prepare_v2(conn->conn, \"",
adamc@885 702 string (String.toString dml),
adamc@885 703 string "\", -1, &stmt, NULL) != SQLITE_OK) uw_error(ctx, FATAL, \"Error preparing statement: ",
adamc@885 704 string (String.toString dml),
adamc@885 705 string "\\n%s\", sqlite3_errmsg(conn->conn));",
adamc@885 706 newline,
adamc@885 707 string "conn->p",
adamc@885 708 string (Int.toString id),
adamc@885 709 string " = stmt;",
adamc@885 710 newline],
adamc@885 711 string "}",
adamc@885 712 newline,
adamc@885 713
adamc@885 714 string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_clear_bindings, stmt);",
adamc@885 715 newline,
adamc@885 716 string "uw_push_cleanup(ctx, (void (*)(void *))sqlite3_reset, stmt);",
adamc@885 717 newline,
adamc@885 718
adamc@885 719 p_inputs loc inputs,
adamc@885 720 newline,
adamc@885 721
adamc@885 722 dmlCommon {loc = loc, dml = box [string "\"",
adamc@885 723 string (String.toString dml),
adamc@885 724 string "\""]},
adamc@885 725
adamc@885 726 string "uw_pop_cleanup(ctx);",
adamc@885 727 newline,
adamc@885 728 string "uw_pop_cleanup(ctx);",
adamc@885 729 newline]
adamc@885 730
adamc@885 731 fun nextval {loc, seqE, seqName} =
adamc@885 732 box [string "uw_conn *conn = uw_get_db(ctx);",
adamc@885 733 newline,
adamc@885 734 string "char *insert = ",
adamc@885 735 case seqName of
adamc@886 736 SOME s => string ("\"INSERT INTO " ^ s ^ " VALUES (NULL)\"")
adamc@885 737 | NONE => box [string "uw_Basis_strcat(ctx, \"INSERT INTO \", uw_Basis_strcat(ctx, ",
adamc@885 738 seqE,
adamc@885 739 string ", \" VALUES ()\"))"],
adamc@885 740 string ";",
adamc@885 741 newline,
adamc@885 742 string "char *delete = ",
adamc@885 743 case seqName of
adamc@885 744 SOME s => string ("\"DELETE FROM " ^ s ^ "\"")
adamc@885 745 | NONE => box [string "uw_Basis_strcat(ctx, \"DELETE FROM \", ",
adamc@885 746 seqE,
adamc@885 747 string ")"],
adamc@885 748 string ";",
adamc@885 749 newline,
adamc@885 750 newline,
adamc@885 751
adamc@886 752 string "if (sqlite3_exec(conn->conn, insert, NULL, NULL, NULL) != SQLITE_OK) uw_error(ctx, FATAL, \"'nextval' INSERT failed: %s\", sqlite3_errmsg(conn->conn));",
adamc@885 753 newline,
adamc@885 754 string "n = sqlite3_last_insert_rowid(conn->conn);",
adamc@885 755 newline,
adamc@886 756 string "if (sqlite3_exec(conn->conn, delete, NULL, NULL, NULL) != SQLITE_OK) uw_error(ctx, FATAL, \"'nextval' DELETE failed: %s\", sqlite3_errmsg(conn->conn));",
adamc@885 757 newline]
adamc@885 758
adamc@885 759 fun nextvalPrepared _ = raise Fail "SQLite.nextvalPrepared called"
adamc@885 760
adamc@885 761 fun sqlifyString s = "'" ^ String.translate (fn #"'" => "''"
adamc@885 762 | ch =>
adamc@885 763 if Char.isPrint ch then
adamc@885 764 str ch
adamc@885 765 else
adamc@885 766 (ErrorMsg.error
adamc@885 767 "Non-printing character found in SQL string literal";
adamc@885 768 ""))
adamc@885 769 (String.toString s) ^ "'"
adamc@885 770
adamc@885 771 fun p_cast (s, _) = s
adamc@885 772
adamc@885 773 fun p_blank _ = "?"
adamc@885 774
adamc@885 775 val () = addDbms {name = "sqlite",
adamc@885 776 header = "sqlite3.h",
adamc@885 777 link = "-lsqlite3",
adamc@885 778 init = init,
adamc@885 779 p_sql_type = p_sql_type,
adamc@885 780 query = query,
adamc@885 781 queryPrepared = queryPrepared,
adamc@885 782 dml = dml,
adamc@885 783 dmlPrepared = dmlPrepared,
adamc@885 784 nextval = nextval,
adamc@885 785 nextvalPrepared = nextvalPrepared,
adamc@885 786 sqlifyString = sqlifyString,
adamc@885 787 p_cast = p_cast,
adamc@885 788 p_blank = p_blank,
adamc@885 789 supportsDeleteAs = false,
adamc@886 790 supportsUpdateAs = false,
adamc@886 791 createSequence = fn s => "CREATE TABLE " ^ s ^ " (id INTEGER PRIMARY KEY AUTOINCREMENT)",
adamc@885 792 textKeysNeedLengths = false,
adamc@885 793 supportsNextval = false,
adamc@885 794 supportsNestedPrepared = false,
adamc@890 795 sqlPrefix = "",
adamc@1014 796 supportsOctetLength = false,
adamc@1014 797 trueString = "1",
adamc@1014 798 falseString = "0"}
adamc@885 799
adamc@885 800 end