Mercurial > hg > orthanc-databases
annotate Framework/MySQL/MySQLStatement.cpp @ 387:f35b17a38301
integration db-protobuf->mainline
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 03 Apr 2023 17:12:08 +0200 |
| parents | 16aac0287485 |
| children | 3d6886f3e5b3 |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
|
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 0 | 7 * |
| 8 * This program is free software: you can redistribute it and/or | |
| 9 * modify it under the terms of the GNU Affero General Public License | |
| 10 * as published by the Free Software Foundation, either version 3 of | |
| 11 * the License, or (at your option) any later version. | |
| 12 * | |
| 13 * This program is distributed in the hope that it will be useful, but | |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 * Affero General Public License for more details. | |
| 17 * | |
| 18 * You should have received a copy of the GNU Affero General Public License | |
| 19 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 **/ | |
| 21 | |
| 22 | |
| 23 #include "MySQLStatement.h" | |
| 24 | |
| 25 #include "../Common/BinaryStringValue.h" | |
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26 #include "../Common/InputFileValue.h" |
| 0 | 27 #include "../Common/Integer64Value.h" |
| 28 #include "../Common/NullValue.h" | |
| 29 #include "../Common/Utf8StringValue.h" | |
| 30 #include "MySQLResult.h" | |
| 31 | |
|
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32 #include <Compatibility.h> // For std::unique_ptr<> |
| 152 | 33 #include <Logging.h> |
| 34 #include <OrthancException.h> | |
| 0 | 35 |
| 36 #include <list> | |
| 37 #include <memory> | |
| 38 | |
| 39 namespace OrthancDatabases | |
| 40 { | |
| 41 class MySQLStatement::ResultField : public boost::noncopyable | |
| 42 { | |
| 43 private: | |
| 186 | 44 IValue* CreateIntegerValue(const MYSQL_BIND& bind) const |
| 0 | 45 { |
| 46 if (length_ != buffer_.size()) | |
| 47 { | |
| 48 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 49 } | |
| 50 | |
| 51 switch (mysqlType_) | |
| 52 { | |
| 53 case MYSQL_TYPE_TINY: | |
| 54 if (bind.is_unsigned) | |
| 55 { | |
| 56 return new Integer64Value(*reinterpret_cast<const uint8_t*>(&buffer_[0])); | |
| 57 } | |
| 58 else | |
| 59 { | |
| 60 return new Integer64Value(*reinterpret_cast<const int8_t*>(&buffer_[0])); | |
| 61 } | |
| 62 | |
| 63 case MYSQL_TYPE_SHORT: | |
| 64 if (bind.is_unsigned) | |
| 65 { | |
| 66 return new Integer64Value(*reinterpret_cast<const uint16_t*>(&buffer_[0])); | |
| 67 } | |
| 68 else | |
| 69 { | |
| 70 return new Integer64Value(*reinterpret_cast<const int16_t*>(&buffer_[0])); | |
| 71 } | |
| 72 | |
| 73 break; | |
| 74 | |
| 75 case MYSQL_TYPE_LONG: | |
| 76 if (bind.is_unsigned) | |
| 77 { | |
| 78 return new Integer64Value(*reinterpret_cast<const uint32_t*>(&buffer_[0])); | |
| 79 } | |
| 80 else | |
| 81 { | |
| 82 return new Integer64Value(*reinterpret_cast<const int32_t*>(&buffer_[0])); | |
| 83 } | |
| 84 | |
| 85 break; | |
| 86 | |
| 87 case MYSQL_TYPE_LONGLONG: | |
| 88 if (bind.is_unsigned) | |
| 89 { | |
| 90 uint64_t value = *reinterpret_cast<const uint64_t*>(&buffer_[0]); | |
| 91 if (static_cast<uint64_t>(static_cast<int64_t>(value)) != value) | |
| 92 { | |
| 93 LOG(WARNING) << "Overflow in a 64 bit integer"; | |
| 94 } | |
| 95 | |
| 96 return new Integer64Value(static_cast<int64_t>(value)); | |
| 97 } | |
| 98 else | |
| 99 { | |
| 100 return new Integer64Value(*reinterpret_cast<const int64_t*>(&buffer_[0])); | |
| 101 } | |
| 102 | |
| 103 break; | |
| 104 | |
| 105 default: | |
| 106 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 107 } | |
| 108 } | |
| 109 | |
| 110 | |
| 111 enum enum_field_types mysqlType_; | |
| 112 ValueType orthancType_; | |
| 113 std::string buffer_; | |
| 188 | 114 |
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115 #if (MYSQL_VERSION_ID < 80000) || defined(MARIADB_VERSION_ID) |
| 0 | 116 my_bool isNull_; |
| 117 my_bool isError_; | |
| 188 | 118 #else |
| 119 bool isNull_; | |
| 120 bool isError_; | |
| 121 #endif | |
| 122 | |
| 0 | 123 unsigned long length_; |
| 124 | |
| 125 public: | |
| 186 | 126 explicit ResultField(const MYSQL_FIELD& field) : |
| 127 mysqlType_(field.type), | |
| 128 length_(0) | |
| 0 | 129 { |
| 130 // https://dev.mysql.com/doc/refman/8.0/en/c-api-data-structures.html | |
| 131 // https://dev.mysql.com/doc/refman/8.0/en/mysql-stmt-fetch.html => size of "buffer_" | |
| 132 switch (field.type) | |
| 133 { | |
| 134 case MYSQL_TYPE_TINY: | |
| 135 orthancType_ = ValueType_Integer64; | |
| 136 buffer_.resize(1); | |
| 137 break; | |
| 138 | |
| 139 case MYSQL_TYPE_SHORT: | |
| 140 orthancType_ = ValueType_Integer64; | |
| 141 buffer_.resize(2); | |
| 142 break; | |
| 143 | |
| 144 case MYSQL_TYPE_LONG: | |
| 145 orthancType_ = ValueType_Integer64; | |
| 146 buffer_.resize(4); | |
| 147 break; | |
| 148 | |
| 149 case MYSQL_TYPE_LONGLONG: | |
| 150 orthancType_ = ValueType_Integer64; | |
| 151 buffer_.resize(8); | |
| 152 break; | |
| 153 | |
| 154 case MYSQL_TYPE_STRING: | |
| 155 case MYSQL_TYPE_VAR_STRING: | |
| 156 case MYSQL_TYPE_BLOB: | |
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157 case MYSQL_TYPE_LONG_BLOB: |
| 0 | 158 // https://medium.com/@adamhooper/in-mysql-never-use-utf8-use-utf8mb4-11761243e434 |
| 159 switch (field.charsetnr) | |
| 160 { | |
| 161 case 45: // utf8mb4_general_ci | |
| 162 case 46: // utf8mb4_bin | |
| 163 case 224: // utf8mb4_unicode_ci => RECOMMENDED collation | |
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164 case 255: // utf8mb4_0900_ai_ci => necessary for MySQL 8.0 |
| 0 | 165 // https://stackoverflow.com/questions/766809/whats-the-difference-between-utf8-general-ci-and-utf8-unicode-ci |
| 166 orthancType_ = ValueType_Utf8String; | |
| 167 break; | |
| 168 | |
| 169 case 63: | |
| 170 orthancType_ = ValueType_BinaryString; | |
| 171 break; | |
| 172 | |
| 173 default: | |
| 174 LOG(ERROR) << "Unsupported MySQL charset: " << field.charsetnr; | |
| 175 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 176 } | |
| 177 | |
| 178 if (field.max_length > 0) | |
| 179 { | |
| 180 buffer_.resize(field.max_length); | |
| 181 } | |
| 182 | |
| 183 break; | |
| 184 | |
| 185 default: | |
| 186 LOG(ERROR) << "MYSQL_TYPE not implemented: " << field.type; | |
| 187 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 188 } | |
| 189 } | |
| 190 | |
| 191 enum enum_field_types GetMysqlType() const | |
| 192 { | |
| 193 return mysqlType_; | |
| 194 } | |
| 195 | |
| 196 ValueType GetOrthancType() const | |
| 197 { | |
| 198 return orthancType_; | |
| 199 } | |
| 200 | |
| 201 void PrepareBind(MYSQL_BIND& bind) | |
| 202 { | |
| 203 memset(&bind, 0, sizeof(bind)); | |
| 204 | |
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205 isNull_ = false; |
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206 isError_ = false; |
| 0 | 207 length_ = 0; |
| 208 | |
| 209 bind.buffer_length = buffer_.size(); | |
| 210 bind.buffer_type = mysqlType_; | |
| 211 bind.is_null = &isNull_; | |
| 212 bind.length = &length_; | |
| 213 | |
| 214 if (buffer_.empty()) | |
| 215 { | |
| 216 // Only fetches the actual size of the field (*): | |
| 217 // mysql_stmt_fetch_column() must be invoked afterward | |
| 218 bind.buffer = 0; | |
| 219 } | |
| 220 else | |
| 221 { | |
| 222 bind.buffer = &buffer_[0]; | |
| 223 bind.error = &isError_; | |
| 224 } | |
| 225 } | |
| 226 | |
| 227 | |
| 228 IValue* FetchValue(MySQLDatabase& database, | |
| 229 MYSQL_STMT& statement, | |
| 230 MYSQL_BIND& bind, | |
| 231 unsigned int column) const | |
| 232 { | |
| 233 if (isError_) | |
| 234 { | |
| 235 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); | |
| 236 } | |
| 237 else if (isNull_) | |
| 238 { | |
| 239 return new NullValue; | |
| 240 } | |
| 241 else if (orthancType_ == ValueType_Integer64) | |
| 242 { | |
| 243 return CreateIntegerValue(bind); | |
| 244 } | |
| 245 else if (orthancType_ == ValueType_Utf8String || | |
| 246 orthancType_ == ValueType_BinaryString) | |
| 247 { | |
| 248 std::string tmp; | |
| 249 tmp.resize(length_); | |
| 250 | |
| 251 if (!tmp.empty()) | |
| 252 { | |
| 253 if (buffer_.empty()) | |
| 254 { | |
| 255 bind.buffer = &tmp[0]; | |
| 256 bind.buffer_length = tmp.size(); | |
| 257 | |
| 258 database.CheckErrorCode(mysql_stmt_fetch_column(&statement, &bind, column, 0)); | |
| 259 } | |
| 260 else if (tmp.size() <= buffer_.size()) | |
| 261 { | |
| 262 memcpy(&tmp[0], &buffer_[0], length_); | |
| 263 } | |
| 264 else | |
| 265 { | |
| 266 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 267 } | |
| 268 } | |
| 269 | |
| 270 if (orthancType_ == ValueType_Utf8String) | |
| 271 { | |
| 272 return new Utf8StringValue(tmp); | |
| 273 } | |
| 274 else | |
| 275 { | |
| 276 return new BinaryStringValue(tmp); | |
| 277 } | |
| 278 } | |
| 279 else | |
| 280 { | |
| 281 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 282 } | |
| 283 } | |
| 284 }; | |
| 285 | |
| 286 | |
| 287 class MySQLStatement::ResultMetadata : public boost::noncopyable | |
| 288 { | |
| 289 private: | |
| 290 MYSQL_RES* metadata_; | |
| 291 | |
| 292 public: | |
| 293 ResultMetadata(MySQLDatabase& db, | |
| 294 MySQLStatement& statement) : | |
| 295 metadata_(NULL) | |
| 296 { | |
| 297 metadata_ = mysql_stmt_result_metadata(statement.GetObject()); | |
| 298 } | |
| 299 | |
| 300 ~ResultMetadata() | |
| 301 { | |
| 302 if (metadata_ != NULL) | |
| 303 { | |
| 304 mysql_free_result(metadata_); | |
| 305 } | |
| 306 } | |
| 307 | |
| 308 bool HasFields() const | |
| 309 { | |
| 310 return metadata_ != NULL; | |
| 311 } | |
| 312 | |
| 313 size_t GetFieldsCount() | |
| 314 { | |
| 315 if (HasFields()) | |
| 316 { | |
| 317 return mysql_num_fields(metadata_); | |
| 318 } | |
| 319 else | |
| 320 { | |
| 321 return 0; | |
| 322 } | |
| 323 } | |
| 324 | |
| 325 MYSQL_RES* GetObject() | |
| 326 { | |
| 327 return metadata_; | |
| 328 } | |
| 329 }; | |
| 330 | |
| 331 | |
| 332 void MySQLStatement::Close() | |
| 333 { | |
| 334 for (size_t i = 0; i < result_.size(); i++) | |
| 335 { | |
| 336 if (result_[i] != NULL) | |
| 337 { | |
| 338 delete result_[i]; | |
| 339 } | |
| 340 } | |
| 341 | |
| 342 if (statement_ != NULL) | |
| 343 { | |
| 344 mysql_stmt_close(statement_); | |
| 345 statement_ = NULL; | |
| 346 } | |
| 347 } | |
| 348 | |
| 349 | |
| 350 MySQLStatement::MySQLStatement(MySQLDatabase& db, | |
| 351 const Query& query) : | |
| 352 db_(db), | |
| 353 statement_(NULL), | |
| 354 formatter_(Dialect_MySQL) | |
| 355 { | |
| 356 std::string sql; | |
| 357 query.Format(sql, formatter_); | |
| 358 | |
| 359 statement_ = mysql_stmt_init(db.GetObject()); | |
| 360 if (statement_ == NULL) | |
| 361 { | |
| 362 db.LogError(); | |
| 363 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); | |
| 364 } | |
| 365 | |
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366 LOG(TRACE) << "Preparing MySQL statement: " << sql; |
| 0 | 367 |
| 368 db_.CheckErrorCode(mysql_stmt_prepare(statement_, sql.c_str(), sql.size())); | |
| 369 | |
| 370 if (mysql_stmt_param_count(statement_) != formatter_.GetParametersCount()) | |
| 371 { | |
| 372 Close(); | |
| 373 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 374 } | |
| 375 | |
| 376 try | |
| 377 { | |
| 378 ResultMetadata result(db, *this); | |
| 379 | |
| 380 if (result.HasFields()) | |
| 381 { | |
| 382 MYSQL_FIELD *field; | |
| 383 while ((field = mysql_fetch_field(result.GetObject()))) | |
| 384 { | |
| 385 result_.push_back(new ResultField(*field)); | |
| 386 } | |
| 387 } | |
| 388 | |
| 389 if (result_.size() != result.GetFieldsCount()) | |
| 390 { | |
| 391 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 392 } | |
| 393 } | |
| 394 catch (Orthanc::OrthancException&) | |
| 395 { | |
| 396 Close(); | |
| 397 throw; | |
| 398 } | |
| 399 | |
| 400 if (query.IsReadOnly()) | |
| 401 { | |
| 402 unsigned long type = (unsigned long) CURSOR_TYPE_READ_ONLY; | |
| 403 mysql_stmt_attr_set(statement_, STMT_ATTR_CURSOR_TYPE, (void*) &type); | |
| 404 } | |
| 405 } | |
| 406 | |
| 407 | |
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408 MySQLStatement::~MySQLStatement() |
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409 { |
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410 try |
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411 { |
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412 Close(); |
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413 } |
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414 catch (Orthanc::OrthancException&) |
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415 { |
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416 // Ignore possible exceptions due to connection loss |
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417 } |
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418 } |
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419 |
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420 |
| 0 | 421 MYSQL_STMT* MySQLStatement::GetObject() |
| 422 { | |
| 423 if (statement_ == NULL) | |
| 424 { | |
| 425 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 426 } | |
| 427 else | |
| 428 { | |
| 429 return statement_; | |
| 430 } | |
| 431 } | |
| 432 | |
| 433 | |
| 434 IValue* MySQLStatement::FetchResultField(size_t i) | |
| 435 { | |
| 436 if (i >= result_.size()) | |
| 437 { | |
| 438 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 439 } | |
| 440 else | |
| 441 { | |
| 442 assert(result_[i] != NULL); | |
| 443 return result_[i]->FetchValue(db_, *statement_, outputs_[i], i); | |
| 444 } | |
| 445 } | |
| 446 | |
| 447 | |
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448 IResult* MySQLStatement::Execute(ITransaction& transaction, |
| 0 | 449 const Dictionary& parameters) |
| 450 { | |
| 451 std::list<long long int> int64Parameters; | |
| 452 | |
| 453 std::vector<MYSQL_BIND> inputs(formatter_.GetParametersCount()); | |
| 454 | |
| 455 for (size_t i = 0; i < inputs.size(); i++) | |
| 456 { | |
| 457 memset(&inputs[i], 0, sizeof(MYSQL_BIND)); | |
| 458 | |
| 459 const std::string& name = formatter_.GetParameterName(i); | |
| 460 if (!parameters.HasKey(name)) | |
| 461 { | |
| 462 LOG(ERROR) << "Missing required parameter in a SQL query: " << name; | |
| 463 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem); | |
| 464 } | |
| 465 | |
| 466 ValueType type = formatter_.GetParameterType(i); | |
| 467 | |
| 468 const IValue& value = parameters.GetValue(name); | |
| 469 if (value.GetType() != type) | |
| 470 { | |
| 471 LOG(ERROR) << "Bad type of argument provided to a SQL query: " << name; | |
| 472 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
| 473 } | |
| 474 | |
| 475 // https://dev.mysql.com/doc/refman/8.0/en/c-api-prepared-statement-type-codes.html | |
| 476 switch (type) | |
| 477 { | |
| 478 case ValueType_Integer64: | |
| 479 { | |
| 480 int64Parameters.push_back(dynamic_cast<const Integer64Value&>(value).GetValue()); | |
| 481 inputs[i].buffer = &int64Parameters.back(); | |
| 482 inputs[i].buffer_type = MYSQL_TYPE_LONGLONG; | |
| 483 break; | |
| 484 } | |
| 485 | |
| 486 case ValueType_Utf8String: | |
| 487 { | |
| 488 const std::string& utf8 = dynamic_cast<const Utf8StringValue&>(value).GetContent(); | |
| 489 inputs[i].buffer = const_cast<char*>(utf8.c_str()); | |
| 490 inputs[i].buffer_length = utf8.size(); | |
| 491 inputs[i].buffer_type = MYSQL_TYPE_STRING; | |
| 492 break; | |
| 493 } | |
| 494 | |
| 495 case ValueType_BinaryString: | |
| 496 { | |
| 497 const std::string& content = dynamic_cast<const BinaryStringValue&>(value).GetContent(); | |
| 498 inputs[i].buffer = const_cast<char*>(content.c_str()); | |
| 499 inputs[i].buffer_length = content.size(); | |
| 500 inputs[i].buffer_type = MYSQL_TYPE_BLOB; | |
| 501 break; | |
| 502 } | |
| 503 | |
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504 case ValueType_InputFile: |
| 0 | 505 { |
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506 const std::string& content = dynamic_cast<const InputFileValue&>(value).GetContent(); |
| 0 | 507 inputs[i].buffer = const_cast<char*>(content.c_str()); |
| 508 inputs[i].buffer_length = content.size(); | |
| 509 inputs[i].buffer_type = MYSQL_TYPE_BLOB; | |
| 510 break; | |
| 511 } | |
| 512 | |
| 513 case ValueType_Null: | |
| 514 { | |
| 515 inputs[i].buffer = NULL; | |
| 516 inputs[i].buffer_type = MYSQL_TYPE_NULL; | |
| 517 break; | |
| 518 } | |
| 519 | |
| 520 default: | |
| 521 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 522 } | |
| 523 } | |
| 524 | |
| 525 if (!inputs.empty()) | |
| 526 { | |
| 527 db_.CheckErrorCode(mysql_stmt_bind_param(statement_, &inputs[0])); | |
| 528 } | |
| 529 | |
| 530 db_.CheckErrorCode(mysql_stmt_execute(statement_)); | |
| 531 | |
| 532 outputs_.resize(result_.size()); | |
| 533 | |
| 534 for (size_t i = 0; i < result_.size(); i++) | |
| 535 { | |
| 536 assert(result_[i] != NULL); | |
| 537 result_[i]->PrepareBind(outputs_[i]); | |
| 538 } | |
| 539 | |
| 540 if (!outputs_.empty()) | |
| 541 { | |
| 542 db_.CheckErrorCode(mysql_stmt_bind_result(statement_, &outputs_[0])); | |
| 543 db_.CheckErrorCode(mysql_stmt_store_result(statement_)); | |
| 544 } | |
| 545 | |
| 546 return new MySQLResult(db_, *this); | |
| 547 } | |
| 548 | |
| 549 | |
|
23
b2ff1cd2907a
handling of implicit transactions in DatabaseManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
9
diff
changeset
|
550 void MySQLStatement::ExecuteWithoutResult(ITransaction& transaction, |
| 0 | 551 const Dictionary& parameters) |
| 552 { | |
|
157
275e14f57f1e
replacing deprecated std::auto_ptr by std::unique_ptr
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
152
diff
changeset
|
553 std::unique_ptr<IResult> dummy(Execute(transaction, parameters)); |
| 0 | 554 } |
| 555 } |