Class: Swift::DB::Postgres
- Inherits:
-
Object
- Object
- Swift::DB::Postgres
- Defined in:
- ext/swift/db/postgres/adapter.c
Defined Under Namespace
Instance Method Summary collapse
- #begin(*args) ⇒ Object
- #close ⇒ Object
- #closed? ⇒ Boolean
- #commit(*args) ⇒ Object
- #escape(fragment) ⇒ Object
- #execute(*args) ⇒ Object
- #fileno ⇒ Object
- #initialize(options) ⇒ Object constructor
- #native_bind_format ⇒ Object
- #native_bind_format=(flag) ⇒ Object
- #ping ⇒ Object
- #prepare(sql) ⇒ Object
- #query(*args) ⇒ Object
- #read(*args) ⇒ Object
- #result ⇒ Object
- #rollback(*args) ⇒ Object
- #transaction(*args) ⇒ Object
- #write(*args) ⇒ Object
Constructor Details
#initialize(options) ⇒ Object
63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 |
# File 'ext/swift/db/postgres/adapter.c', line 63
VALUE db_postgres_adapter_initialize(VALUE self, VALUE options) {
char *connection_info;
VALUE db, user, pass, host, port, ssl;
Adapter *a = db_postgres_adapter_handle(self);
if (TYPE(options) != T_HASH)
rb_raise(eSwiftArgumentError, "options needs to be a hash");
db = rb_hash_aref(options, ID2SYM(rb_intern("db")));
user = rb_hash_aref(options, ID2SYM(rb_intern("user")));
pass = rb_hash_aref(options, ID2SYM(rb_intern("password")));
host = rb_hash_aref(options, ID2SYM(rb_intern("host")));
port = rb_hash_aref(options, ID2SYM(rb_intern("port")));
ssl = rb_hash_aref(options, ID2SYM(rb_intern("ssl")));
if (NIL_P(db))
rb_raise(eSwiftConnectionError, "Invalid db name");
if (NIL_P(host))
host = rb_str_new2("127.0.0.1");
if (NIL_P(port))
port = rb_str_new2("5432");
if (NIL_P(user))
user = sUser;
if (!NIL_P(ssl) && TYPE(ssl) != T_HASH)
rb_raise(eSwiftArgumentError, "ssl options needs to be a hash");
connection_info = (char *)malloc(4096);
snprintf(connection_info, 4096, "dbname='%s' user='%s' password='%s' host='%s' port='%s'",
CSTRING(db), CSTRING(user), CSTRING(pass), CSTRING(host), CSTRING(port));
if (!NIL_P(ssl)) {
append_ssl_option(connection_info, 4096, ssl, "sslmode", "allow");
append_ssl_option(connection_info, 4096, ssl, "sslcert", 0);
append_ssl_option(connection_info, 4096, ssl, "sslkey", 0);
append_ssl_option(connection_info, 4096, ssl, "sslrootcert", 0);
append_ssl_option(connection_info, 4096, ssl, "sslcrl", 0);
}
a->connection = PQconnectdb(connection_info);
free(connection_info);
if (!a->connection)
rb_raise(eSwiftRuntimeError, "unable to allocate database handle");
if (PQstatus(a->connection) == CONNECTION_BAD)
rb_raise(eSwiftConnectionError, PQerrorMessage(a->connection));
PQsetNoticeProcessor(a->connection, (PQnoticeProcessor)db_postgres_adapter_notice, (void*)self);
PQsetClientEncoding(a->connection, "utf8");
return self;
}
|
Instance Method Details
#begin(*args) ⇒ Object
185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 |
# File 'ext/swift/db/postgres/adapter.c', line 185
VALUE db_postgres_adapter_begin(int argc, VALUE *argv, VALUE self) {
char command[256];
VALUE savepoint;
PGresult *result;
Adapter *a = db_postgres_adapter_handle_safe(self);
rb_scan_args(argc, argv, "01", &savepoint);
if (a->t_nesting == 0) {
result = PQexec(a->connection, "begin");
db_postgres_check_result(result);
PQclear(result);
a->t_nesting++;
if (NIL_P(savepoint))
return Qtrue;
}
if (NIL_P(savepoint))
savepoint = rb_uuid_string();
snprintf(command, 256, "savepoint %s", CSTRING(savepoint));
result = PQexec(a->connection, command);
db_postgres_check_result(result);
PQclear(result);
a->t_nesting++;
return savepoint;
}
|
#close ⇒ Object
309 310 311 312 313 314 315 316 317 |
# File 'ext/swift/db/postgres/adapter.c', line 309
VALUE db_postgres_adapter_close(VALUE self) {
Adapter *a = db_postgres_adapter_handle(self);
if (a->connection) {
PQfinish(a->connection);
a->connection = 0;
return Qtrue;
}
return Qfalse;
}
|
#closed? ⇒ Boolean
319 320 321 322 |
# File 'ext/swift/db/postgres/adapter.c', line 319
VALUE db_postgres_adapter_closed_q(VALUE self) {
Adapter *a = db_postgres_adapter_handle(self);
return a->connection ? Qfalse : Qtrue;
}
|
#commit(*args) ⇒ Object
214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 |
# File 'ext/swift/db/postgres/adapter.c', line 214
VALUE db_postgres_adapter_commit(int argc, VALUE *argv, VALUE self) {
VALUE savepoint;
char command[256];
PGresult *result;
Adapter *a = db_postgres_adapter_handle_safe(self);
rb_scan_args(argc, argv, "01", &savepoint);
if (a->t_nesting == 0)
return Qfalse;
if (NIL_P(savepoint)) {
result = PQexec(a->connection, "commit");
db_postgres_check_result(result);
PQclear(result);
a->t_nesting--;
}
else {
snprintf(command, 256, "release savepoint %s", CSTRING(savepoint));
result = PQexec(a->connection, command);
db_postgres_check_result(result);
PQclear(result);
a->t_nesting--;
}
return Qtrue;
}
|
#escape(fragment) ⇒ Object
333 334 335 336 337 338 339 340 341 342 343 344 |
# File 'ext/swift/db/postgres/adapter.c', line 333
VALUE db_postgres_adapter_escape(VALUE self, VALUE fragment) {
int error;
VALUE text = TO_S(fragment);
char pg_escaped[RSTRING_LEN(text) * 2 + 1];
Adapter *a = db_postgres_adapter_handle_safe(self);
PQescapeStringConn(a->connection, pg_escaped, RSTRING_PTR(text), RSTRING_LEN(text), &error);
if (error)
rb_raise(eSwiftArgumentError, "invalid escape string: %s\n", PQerrorMessage(a->connection));
return rb_str_new2(pg_escaped);
}
|
#execute(*args) ⇒ Object
125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 |
# File 'ext/swift/db/postgres/adapter.c', line 125
VALUE db_postgres_adapter_execute(int argc, VALUE *argv, VALUE self) {
char **bind_args_data = 0;
int n, *bind_args_size = 0, *bind_args_fmt = 0;
PGresult *pg_result;
VALUE sql, bind, data;
Adapter *a = db_postgres_adapter_handle_safe(self);
rb_scan_args(argc, argv, "10*", &sql, &bind);
if (!a->native)
sql = db_postgres_normalized_sql(sql);
if (RARRAY_LEN(bind) > 0) {
bind_args_size = (int *) malloc(sizeof(int) * RARRAY_LEN(bind));
bind_args_fmt = (int *) malloc(sizeof(int) * RARRAY_LEN(bind));
bind_args_data = (char **) malloc(sizeof(char *) * RARRAY_LEN(bind));
rb_gc_register_address(&bind);
for (n = 0; n < RARRAY_LEN(bind); n++) {
data = rb_ary_entry(bind, n);
if (NIL_P(data)) {
bind_args_size[n] = 0;
bind_args_data[n] = 0;
bind_args_fmt[n] = 0;
}
else {
if (rb_obj_is_kind_of(data, rb_cIO) || rb_obj_is_kind_of(data, cStringIO))
bind_args_fmt[n] = 1;
else
bind_args_fmt[n] = 0;
data = typecast_to_string(data);
bind_args_size[n] = RSTRING_LEN(data);
bind_args_data[n] = RSTRING_PTR(data);
}
}
Query q = {
.connection = a->connection,
.command = CSTRING(sql),
.n_args = RARRAY_LEN(bind),
.data = bind_args_data,
.size = bind_args_size,
.format = bind_args_fmt
};
pg_result = (PGresult *)rb_thread_blocking_region(nogvl_pq_exec_params, &q, RUBY_UBF_IO, 0);
rb_gc_unregister_address(&bind);
free(bind_args_size);
free(bind_args_data);
free(bind_args_fmt);
}
else {
Query q = {.connection = a->connection, .command = CSTRING(sql)};
pg_result = (PGresult *)rb_thread_blocking_region(nogvl_pq_exec, &q, RUBY_UBF_IO, 0);
}
db_postgres_check_result(pg_result);
return db_postgres_result_load(db_postgres_result_allocate(cDPR), pg_result);
}
|
#fileno ⇒ Object
346 347 348 349 |
# File 'ext/swift/db/postgres/adapter.c', line 346
VALUE db_postgres_adapter_fileno(VALUE self) {
Adapter *a = db_postgres_adapter_handle_safe(self);
return INT2NUM(PQsocket(a->connection));
}
|
#native_bind_format ⇒ Object
365 366 367 368 369 370 371 372 373 374 375 376 377 |
# File 'ext/swift/db/postgres/adapter.c', line 365
VALUE db_postgres_adapter_native(VALUE self) {
int status, native;
VALUE result;
Adapter *a = db_postgres_adapter_handle_safe(self);
native = a->native;
a->native = 1;
result = rb_protect(rb_yield, Qnil, &status);
a->native = native;
if (status)
rb_jump_tag(status);
return result;
}
|
#native_bind_format=(flag) ⇒ Object
379 380 381 382 383 |
# File 'ext/swift/db/postgres/adapter.c', line 379
VALUE db_postgres_adapter_native_set(VALUE self, VALUE flag) {
Adapter *a = db_postgres_adapter_handle_safe(self);
a->native = Qtrue == flag ? 1 : 0;
return flag;
}
|
#ping ⇒ Object
324 325 326 327 |
# File 'ext/swift/db/postgres/adapter.c', line 324
VALUE db_postgres_adapter_ping(VALUE self) {
Adapter *a = db_postgres_adapter_handle(self);
return a->connection && PQstatus(a->connection) == CONNECTION_OK ? Qtrue : Qfalse;
}
|
#prepare(sql) ⇒ Object
329 330 331 |
# File 'ext/swift/db/postgres/adapter.c', line 329
VALUE db_postgres_adapter_prepare(VALUE self, VALUE sql) {
return db_postgres_statement_initialize(db_postgres_statement_allocate(cDPS), self, sql);
}
|
#query(*args) ⇒ Object
385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 |
# File 'ext/swift/db/postgres/adapter.c', line 385
VALUE db_postgres_adapter_query(int argc, VALUE *argv, VALUE self) {
VALUE sql, bind, data;
char **bind_args_data = 0;
int n, ok = 1, *bind_args_size = 0, *bind_args_fmt = 0;
Adapter *a = db_postgres_adapter_handle_safe(self);
rb_scan_args(argc, argv, "10*", &sql, &bind);
if (!a->native)
sql = db_postgres_normalized_sql(sql);
if (RARRAY_LEN(bind) > 0) {
bind_args_size = (int *) malloc(sizeof(int) * RARRAY_LEN(bind));
bind_args_fmt = (int *) malloc(sizeof(int) * RARRAY_LEN(bind));
bind_args_data = (char **) malloc(sizeof(char *) * RARRAY_LEN(bind));
for (n = 0; n < RARRAY_LEN(bind); n++) {
data = rb_ary_entry(bind, n);
if (NIL_P(data)) {
bind_args_size[n] = 0;
bind_args_data[n] = 0;
bind_args_fmt[n] = 0;
}
else {
if (rb_obj_is_kind_of(data, rb_cIO) || rb_obj_is_kind_of(data, cStringIO))
bind_args_fmt[n] = 1;
else
bind_args_fmt[n] = 0;
data = typecast_to_string(data);
bind_args_size[n] = RSTRING_LEN(data);
bind_args_data[n] = RSTRING_PTR(data);
}
}
ok = PQsendQueryParams(a->connection, RSTRING_PTR(sql), RARRAY_LEN(bind), 0,
(const char* const *)bind_args_data, bind_args_size, bind_args_fmt, 0);
free(bind_args_size);
free(bind_args_data);
free(bind_args_fmt);
}
else
ok = PQsendQuery(a->connection, RSTRING_PTR(sql));
if (!ok)
rb_raise(eSwiftRuntimeError, "%s", PQerrorMessage(a->connection));
if (rb_block_given_p()) {
rb_thread_wait_fd(PQsocket(a->connection));
return db_postgres_result_each(db_postgres_adapter_result(self));
}
else
return Qtrue;
}
|
#read(*args) ⇒ Object
507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 |
# File 'ext/swift/db/postgres/adapter.c', line 507
VALUE db_postgres_adapter_read(int argc, VALUE *argv, VALUE self) {
int n, done = 0;
char *sql, *data;
PGresult *result;
VALUE table, fields, io;
Adapter *a = db_postgres_adapter_handle_safe(self);
if (argc > 3)
rb_raise(rb_eArgError, "wrong number of arguments (%d for 0..3)", argc);
table = fields = io = Qnil;
switch (argc) {
case 0:
if (!rb_block_given_p())
rb_raise(eSwiftArgumentError, "#read needs an IO object to write to or a block to call");
break;
case 1:
if (rb_respond_to(argv[0], rb_intern("write")))
io = argv[0];
else
table = argv[0];
break;
case 2:
table = argv[0];
io = argv[1];
if (!rb_respond_to(io, rb_intern("write")))
rb_raise(eSwiftArgumentError, "#read needs an IO object that responds to #write");
break;
case 3:
table = argv[0];
fields = argv[1];
io = argv[2];
if (!rb_respond_to(io, rb_intern("write")))
rb_raise(eSwiftArgumentError, "#read needs an IO object that responds to #write");
if (TYPE(fields) != T_ARRAY)
rb_raise(eSwiftArgumentError, "fields needs to be an array");
if (RARRAY_LEN(fields) < 1)
fields = Qnil;
}
if (!NIL_P(table)) {
sql = (char *)malloc(4096);
if (NIL_P(fields))
snprintf(sql, 4096, "copy %s to stdout", CSTRING(table));
else
snprintf(sql, 4096, "copy %s(%s) to stdout", CSTRING(table), CSTRING(rb_ary_join(fields, rb_str_new2(", "))));
result = PQexec(a->connection, sql);
free(sql);
db_postgres_check_result(result);
PQclear(result);
}
while (!done) {
switch ((n = PQgetCopyData(a->connection, &data, 0))) {
case -1: done = 1; break;
case -2: rb_raise(eSwiftRuntimeError, "%s", PQerrorMessage(a->connection));
default:
if (n > 0) {
if (NIL_P(io))
rb_yield(rb_str_new(data, n));
else
rb_funcall(io, rb_intern("write"), 1, rb_str_new(data, n));
PQfreemem(data);
}
}
}
result = PQgetResult(a->connection);
db_postgres_check_result(result);
if (!result)
rb_raise(eSwiftRuntimeError, "invalid result at the end of COPY command");
return db_postgres_result_load(db_postgres_result_allocate(cDPR), result);
}
|
#result ⇒ Object
351 352 353 354 355 356 357 358 359 360 361 362 363 |
# File 'ext/swift/db/postgres/adapter.c', line 351
VALUE db_postgres_adapter_result(VALUE self) {
PGresult *result, *rest;
Adapter *a = db_postgres_adapter_handle_safe(self);
while (1) {
PQconsumeInput(a->connection);
if (!PQisBusy(a->connection))
break;
}
result = PQgetResult(a->connection);
while ((rest = PQgetResult(a->connection))) PQclear(rest);
db_postgres_check_result(result);
return db_postgres_result_load(db_postgres_result_allocate(cDPR), result);
}
|
#rollback(*args) ⇒ Object
241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 |
# File 'ext/swift/db/postgres/adapter.c', line 241
VALUE db_postgres_adapter_rollback(int argc, VALUE *argv, VALUE self) {
VALUE savepoint;
char command[256];
PGresult *result;
Adapter *a = db_postgres_adapter_handle_safe(self);
rb_scan_args(argc, argv, "01", &savepoint);
if (a->t_nesting == 0)
return Qfalse;
if (NIL_P(savepoint)) {
result = PQexec(a->connection, "rollback");
db_postgres_check_result(result);
PQclear(result);
a->t_nesting--;
}
else {
snprintf(command, 256, "rollback to savepoint %s", CSTRING(savepoint));
result = PQexec(a->connection, command);
db_postgres_check_result(result);
PQclear(result);
a->t_nesting--;
}
return Qtrue;
}
|
#transaction(*args) ⇒ Object
268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 |
# File 'ext/swift/db/postgres/adapter.c', line 268
VALUE db_postgres_adapter_transaction(int argc, VALUE *argv, VALUE self) {
int status;
VALUE savepoint, block, block_result;
Adapter *a = db_postgres_adapter_handle_safe(self);
rb_scan_args(argc, argv, "01&", &savepoint, &block);
if (NIL_P(block))
rb_raise(eSwiftRuntimeError, "postgres transaction requires a block");
if (a->t_nesting == 0) {
db_postgres_adapter_begin(1, &savepoint, self);
block_result = rb_protect(rb_yield, self, &status);
if (!status) {
db_postgres_adapter_commit(1, &savepoint, self);
if (!NIL_P(savepoint))
db_postgres_adapter_commit(0, 0, self);
}
else {
db_postgres_adapter_rollback(1, &savepoint, self);
if (!NIL_P(savepoint))
db_postgres_adapter_rollback(0, 0, self);
rb_jump_tag(status);
}
}
else {
if (NIL_P(savepoint))
savepoint = rb_uuid_string();
db_postgres_adapter_begin(1, &savepoint, self);
block_result = rb_protect(rb_yield, self, &status);
if (!status)
db_postgres_adapter_commit(1, &savepoint, self);
else {
db_postgres_adapter_rollback(1, &savepoint, self);
rb_jump_tag(status);
}
}
return block_result;
}
|
#write(*args) ⇒ Object
440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 |
# File 'ext/swift/db/postgres/adapter.c', line 440
VALUE db_postgres_adapter_write(int argc, VALUE *argv, VALUE self) {
char *sql;
VALUE table, fields, io, data;
PGresult *result;
Adapter *a = db_postgres_adapter_handle_safe(self);
if (argc < 1 || argc > 3)
rb_raise(rb_eArgError, "wrong number of arguments (%d for 1..3)", argc);
table = io = fields = Qnil;
switch (argc) {
case 1:
io = argv[0];
break;
case 2:
table = argv[0];
io = argv[1];
break;
case 3:
table = argv[0];
fields = argv[1];
io = argv[2];
if (TYPE(fields) != T_ARRAY)
rb_raise(eSwiftArgumentError, "fields needs to be an array");
if (RARRAY_LEN(fields) < 1)
fields = Qnil;
}
if (argc > 1) {
sql = (char *)malloc(4096);
if (NIL_P(fields))
snprintf(sql, 4096, "copy %s from stdin", CSTRING(table));
else
snprintf(sql, 4096, "copy %s(%s) from stdin", CSTRING(table), CSTRING(rb_ary_join(fields, rb_str_new2(", "))));
result = PQexec(a->connection, sql);
free(sql);
db_postgres_check_result(result);
PQclear(result);
}
if (rb_respond_to(io, rb_intern("read"))) {
while (!NIL_P((data = rb_funcall(io, rb_intern("read"), 1, INT2NUM(4096))))) {
data = TO_S(data);
if (PQputCopyData(a->connection, RSTRING_PTR(data), RSTRING_LEN(data)) != 1)
rb_raise(eSwiftRuntimeError, "%s", PQerrorMessage(a->connection));
}
if (PQputCopyEnd(a->connection, 0) != 1)
rb_raise(eSwiftRuntimeError, "%s", PQerrorMessage(a->connection));
}
else {
io = TO_S(io);
if (PQputCopyData(a->connection, RSTRING_PTR(io), RSTRING_LEN(io)) != 1)
rb_raise(eSwiftRuntimeError, "%s", PQerrorMessage(a->connection));
if (PQputCopyEnd(a->connection, 0) != 1)
rb_raise(eSwiftRuntimeError, "%s", PQerrorMessage(a->connection));
}
result = PQgetResult(a->connection);
db_postgres_check_result(result);
if (!result)
rb_raise(eSwiftRuntimeError, "invalid result at the end of COPY command");
return db_postgres_result_load(db_postgres_result_allocate(cDPR), result);
}
|