Mercurial > hg > orthanc-databases
annotate Framework/MySQL/MySQLStatement.cpp @ 522:c49136b34891 large-queries tip
use a prepared statement for InsertOrUpdateMetadata
| author | Alain Mazy <am@orthanc.team> |
|---|---|
| date | Fri, 05 Jul 2024 09:15:54 +0200 |
| parents | 54d518dcd74a |
| children |
| 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) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium |
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 0 | 8 * |
| 9 * This program is free software: you can redistribute it and/or | |
| 10 * modify it under the terms of the GNU Affero General Public License | |
| 11 * as published by the Free Software Foundation, either version 3 of | |
| 12 * the License, or (at your option) any later version. | |
| 13 * | |
| 14 * This program is distributed in the hope that it will be useful, but | |
| 15 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 17 * Affero General Public License for more details. | |
| 18 * | |
| 19 * You should have received a copy of the GNU Affero General Public License | |
| 20 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 21 **/ | |
| 22 | |
| 23 | |
| 24 #include "MySQLStatement.h" | |
| 25 | |
| 26 #include "../Common/BinaryStringValue.h" | |
|
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27 #include "../Common/InputFileValue.h" |
| 0 | 28 #include "../Common/Integer64Value.h" |
| 29 #include "../Common/NullValue.h" | |
| 30 #include "../Common/Utf8StringValue.h" | |
| 31 #include "MySQLResult.h" | |
| 32 | |
|
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33 #include <Compatibility.h> // For std::unique_ptr<> |
| 152 | 34 #include <Logging.h> |
| 35 #include <OrthancException.h> | |
| 0 | 36 |
| 37 #include <list> | |
| 38 #include <memory> | |
| 39 | |
| 40 namespace OrthancDatabases | |
| 41 { | |
| 42 class MySQLStatement::ResultField : public boost::noncopyable | |
| 43 { | |
| 44 private: | |
| 186 | 45 IValue* CreateIntegerValue(const MYSQL_BIND& bind) const |
| 0 | 46 { |
| 47 if (length_ != buffer_.size()) | |
| 48 { | |
| 49 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 50 } | |
| 51 | |
| 52 switch (mysqlType_) | |
| 53 { | |
| 54 case MYSQL_TYPE_TINY: | |
| 55 if (bind.is_unsigned) | |
| 56 { | |
| 57 return new Integer64Value(*reinterpret_cast<const uint8_t*>(&buffer_[0])); | |
| 58 } | |
| 59 else | |
| 60 { | |
| 61 return new Integer64Value(*reinterpret_cast<const int8_t*>(&buffer_[0])); | |
| 62 } | |
| 63 | |
| 64 case MYSQL_TYPE_SHORT: | |
| 65 if (bind.is_unsigned) | |
| 66 { | |
| 67 return new Integer64Value(*reinterpret_cast<const uint16_t*>(&buffer_[0])); | |
| 68 } | |
| 69 else | |
| 70 { | |
| 71 return new Integer64Value(*reinterpret_cast<const int16_t*>(&buffer_[0])); | |
| 72 } | |
| 73 | |
| 74 break; | |
| 75 | |
| 76 case MYSQL_TYPE_LONG: | |
| 77 if (bind.is_unsigned) | |
| 78 { | |
| 79 return new Integer64Value(*reinterpret_cast<const uint32_t*>(&buffer_[0])); | |
| 80 } | |
| 81 else | |
| 82 { | |
| 83 return new Integer64Value(*reinterpret_cast<const int32_t*>(&buffer_[0])); | |
| 84 } | |
| 85 | |
| 86 break; | |
| 87 | |
| 88 case MYSQL_TYPE_LONGLONG: | |
| 89 if (bind.is_unsigned) | |
| 90 { | |
| 91 uint64_t value = *reinterpret_cast<const uint64_t*>(&buffer_[0]); | |
| 92 if (static_cast<uint64_t>(static_cast<int64_t>(value)) != value) | |
| 93 { | |
| 94 LOG(WARNING) << "Overflow in a 64 bit integer"; | |
| 95 } | |
| 96 | |
| 97 return new Integer64Value(static_cast<int64_t>(value)); | |
| 98 } | |
| 99 else | |
| 100 { | |
| 101 return new Integer64Value(*reinterpret_cast<const int64_t*>(&buffer_[0])); | |
| 102 } | |
| 103 | |
| 104 break; | |
| 105 | |
| 106 default: | |
| 107 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 108 } | |
| 109 } | |
| 110 | |
| 111 | |
| 112 enum enum_field_types mysqlType_; | |
| 113 ValueType orthancType_; | |
| 114 std::string buffer_; | |
| 188 | 115 |
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116 #if (MYSQL_VERSION_ID < 80000) || defined(MARIADB_VERSION_ID) |
| 0 | 117 my_bool isNull_; |
| 118 my_bool isError_; | |
| 188 | 119 #else |
| 120 bool isNull_; | |
| 121 bool isError_; | |
| 122 #endif | |
| 123 | |
| 0 | 124 unsigned long length_; |
| 125 | |
| 126 public: | |
| 186 | 127 explicit ResultField(const MYSQL_FIELD& field) : |
| 128 mysqlType_(field.type), | |
| 129 length_(0) | |
| 0 | 130 { |
| 131 // https://dev.mysql.com/doc/refman/8.0/en/c-api-data-structures.html | |
| 132 // https://dev.mysql.com/doc/refman/8.0/en/mysql-stmt-fetch.html => size of "buffer_" | |
| 133 switch (field.type) | |
| 134 { | |
| 135 case MYSQL_TYPE_TINY: | |
| 136 orthancType_ = ValueType_Integer64; | |
| 137 buffer_.resize(1); | |
| 138 break; | |
| 139 | |
| 140 case MYSQL_TYPE_SHORT: | |
| 141 orthancType_ = ValueType_Integer64; | |
| 142 buffer_.resize(2); | |
| 143 break; | |
| 144 | |
| 145 case MYSQL_TYPE_LONG: | |
| 146 orthancType_ = ValueType_Integer64; | |
| 147 buffer_.resize(4); | |
| 148 break; | |
| 149 | |
| 150 case MYSQL_TYPE_LONGLONG: | |
| 151 orthancType_ = ValueType_Integer64; | |
| 152 buffer_.resize(8); | |
| 153 break; | |
| 154 | |
| 155 case MYSQL_TYPE_STRING: | |
| 156 case MYSQL_TYPE_VAR_STRING: | |
| 157 case MYSQL_TYPE_BLOB: | |
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158 case MYSQL_TYPE_LONG_BLOB: |
| 0 | 159 // https://medium.com/@adamhooper/in-mysql-never-use-utf8-use-utf8mb4-11761243e434 |
| 160 switch (field.charsetnr) | |
| 161 { | |
| 162 case 45: // utf8mb4_general_ci | |
| 163 case 46: // utf8mb4_bin | |
| 164 case 224: // utf8mb4_unicode_ci => RECOMMENDED collation | |
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165 case 255: // utf8mb4_0900_ai_ci => necessary for MySQL 8.0 |
| 0 | 166 // https://stackoverflow.com/questions/766809/whats-the-difference-between-utf8-general-ci-and-utf8-unicode-ci |
| 167 orthancType_ = ValueType_Utf8String; | |
| 168 break; | |
| 169 | |
| 170 case 63: | |
| 171 orthancType_ = ValueType_BinaryString; | |
| 172 break; | |
| 173 | |
| 174 default: | |
| 175 LOG(ERROR) << "Unsupported MySQL charset: " << field.charsetnr; | |
| 176 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 177 } | |
| 178 | |
| 179 if (field.max_length > 0) | |
| 180 { | |
| 181 buffer_.resize(field.max_length); | |
| 182 } | |
| 183 | |
| 184 break; | |
| 185 | |
| 186 default: | |
| 187 LOG(ERROR) << "MYSQL_TYPE not implemented: " << field.type; | |
| 188 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 189 } | |
| 190 } | |
| 191 | |
| 192 enum enum_field_types GetMysqlType() const | |
| 193 { | |
| 194 return mysqlType_; | |
| 195 } | |
| 196 | |
| 197 ValueType GetOrthancType() const | |
| 198 { | |
| 199 return orthancType_; | |
| 200 } | |
| 201 | |
| 202 void PrepareBind(MYSQL_BIND& bind) | |
| 203 { | |
| 204 memset(&bind, 0, sizeof(bind)); | |
| 205 | |
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206 isNull_ = false; |
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207 isError_ = false; |
| 0 | 208 length_ = 0; |
| 209 | |
| 210 bind.buffer_length = buffer_.size(); | |
| 211 bind.buffer_type = mysqlType_; | |
| 212 bind.is_null = &isNull_; | |
| 213 bind.length = &length_; | |
| 214 | |
| 215 if (buffer_.empty()) | |
| 216 { | |
| 217 // Only fetches the actual size of the field (*): | |
| 218 // mysql_stmt_fetch_column() must be invoked afterward | |
| 219 bind.buffer = 0; | |
| 220 } | |
| 221 else | |
| 222 { | |
| 223 bind.buffer = &buffer_[0]; | |
| 224 bind.error = &isError_; | |
| 225 } | |
| 226 } | |
| 227 | |
| 228 | |
| 229 IValue* FetchValue(MySQLDatabase& database, | |
| 230 MYSQL_STMT& statement, | |
| 231 MYSQL_BIND& bind, | |
| 232 unsigned int column) const | |
| 233 { | |
| 234 if (isError_) | |
| 235 { | |
| 236 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); | |
| 237 } | |
| 238 else if (isNull_) | |
| 239 { | |
| 240 return new NullValue; | |
| 241 } | |
| 242 else if (orthancType_ == ValueType_Integer64) | |
| 243 { | |
| 244 return CreateIntegerValue(bind); | |
| 245 } | |
| 246 else if (orthancType_ == ValueType_Utf8String || | |
| 247 orthancType_ == ValueType_BinaryString) | |
| 248 { | |
| 249 std::string tmp; | |
| 250 tmp.resize(length_); | |
| 251 | |
| 252 if (!tmp.empty()) | |
| 253 { | |
| 254 if (buffer_.empty()) | |
| 255 { | |
| 256 bind.buffer = &tmp[0]; | |
| 257 bind.buffer_length = tmp.size(); | |
| 258 | |
| 259 database.CheckErrorCode(mysql_stmt_fetch_column(&statement, &bind, column, 0)); | |
| 260 } | |
| 261 else if (tmp.size() <= buffer_.size()) | |
| 262 { | |
| 263 memcpy(&tmp[0], &buffer_[0], length_); | |
| 264 } | |
| 265 else | |
| 266 { | |
| 267 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 268 } | |
| 269 } | |
| 270 | |
| 271 if (orthancType_ == ValueType_Utf8String) | |
| 272 { | |
| 273 return new Utf8StringValue(tmp); | |
| 274 } | |
| 275 else | |
| 276 { | |
| 277 return new BinaryStringValue(tmp); | |
| 278 } | |
| 279 } | |
| 280 else | |
| 281 { | |
| 282 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 283 } | |
| 284 } | |
| 285 }; | |
| 286 | |
| 287 | |
| 288 class MySQLStatement::ResultMetadata : public boost::noncopyable | |
| 289 { | |
| 290 private: | |
| 291 MYSQL_RES* metadata_; | |
| 292 | |
| 293 public: | |
| 294 ResultMetadata(MySQLDatabase& db, | |
| 295 MySQLStatement& statement) : | |
| 296 metadata_(NULL) | |
| 297 { | |
| 298 metadata_ = mysql_stmt_result_metadata(statement.GetObject()); | |
| 299 } | |
| 300 | |
| 301 ~ResultMetadata() | |
| 302 { | |
| 303 if (metadata_ != NULL) | |
| 304 { | |
| 305 mysql_free_result(metadata_); | |
| 306 } | |
| 307 } | |
| 308 | |
| 309 bool HasFields() const | |
| 310 { | |
| 311 return metadata_ != NULL; | |
| 312 } | |
| 313 | |
| 314 size_t GetFieldsCount() | |
| 315 { | |
| 316 if (HasFields()) | |
| 317 { | |
| 318 return mysql_num_fields(metadata_); | |
| 319 } | |
| 320 else | |
| 321 { | |
| 322 return 0; | |
| 323 } | |
| 324 } | |
| 325 | |
| 326 MYSQL_RES* GetObject() | |
| 327 { | |
| 328 return metadata_; | |
| 329 } | |
| 330 }; | |
| 331 | |
| 332 | |
| 333 void MySQLStatement::Close() | |
| 334 { | |
| 335 for (size_t i = 0; i < result_.size(); i++) | |
| 336 { | |
| 337 if (result_[i] != NULL) | |
| 338 { | |
| 339 delete result_[i]; | |
| 340 } | |
| 341 } | |
| 342 | |
| 343 if (statement_ != NULL) | |
| 344 { | |
| 345 mysql_stmt_close(statement_); | |
| 346 statement_ = NULL; | |
| 347 } | |
| 348 } | |
| 349 | |
| 350 | |
| 351 MySQLStatement::MySQLStatement(MySQLDatabase& db, | |
| 352 const Query& query) : | |
| 353 db_(db), | |
| 354 statement_(NULL), | |
| 355 formatter_(Dialect_MySQL) | |
| 356 { | |
| 357 std::string sql; | |
| 358 query.Format(sql, formatter_); | |
| 359 | |
| 360 statement_ = mysql_stmt_init(db.GetObject()); | |
| 361 if (statement_ == NULL) | |
| 362 { | |
| 363 db.LogError(); | |
| 364 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); | |
| 365 } | |
| 366 | |
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367 LOG(TRACE) << "Preparing MySQL statement: " << sql; |
| 0 | 368 |
| 369 db_.CheckErrorCode(mysql_stmt_prepare(statement_, sql.c_str(), sql.size())); | |
| 370 | |
| 371 if (mysql_stmt_param_count(statement_) != formatter_.GetParametersCount()) | |
| 372 { | |
| 373 Close(); | |
| 374 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 375 } | |
| 376 | |
| 377 try | |
| 378 { | |
| 379 ResultMetadata result(db, *this); | |
| 380 | |
| 381 if (result.HasFields()) | |
| 382 { | |
| 383 MYSQL_FIELD *field; | |
| 384 while ((field = mysql_fetch_field(result.GetObject()))) | |
| 385 { | |
| 386 result_.push_back(new ResultField(*field)); | |
| 387 } | |
| 388 } | |
| 389 | |
| 390 if (result_.size() != result.GetFieldsCount()) | |
| 391 { | |
| 392 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 393 } | |
| 394 } | |
| 395 catch (Orthanc::OrthancException&) | |
| 396 { | |
| 397 Close(); | |
| 398 throw; | |
| 399 } | |
| 400 | |
| 401 if (query.IsReadOnly()) | |
| 402 { | |
| 403 unsigned long type = (unsigned long) CURSOR_TYPE_READ_ONLY; | |
| 404 mysql_stmt_attr_set(statement_, STMT_ATTR_CURSOR_TYPE, (void*) &type); | |
| 405 } | |
| 406 } | |
| 407 | |
| 408 | |
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409 MySQLStatement::~MySQLStatement() |
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410 { |
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411 try |
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412 { |
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413 Close(); |
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414 } |
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415 catch (Orthanc::OrthancException&) |
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416 { |
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417 // Ignore possible exceptions due to connection loss |
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418 } |
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419 } |
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420 |
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421 |
| 0 | 422 MYSQL_STMT* MySQLStatement::GetObject() |
| 423 { | |
| 424 if (statement_ == NULL) | |
| 425 { | |
| 426 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 427 } | |
| 428 else | |
| 429 { | |
| 430 return statement_; | |
| 431 } | |
| 432 } | |
| 433 | |
| 434 | |
| 435 IValue* MySQLStatement::FetchResultField(size_t i) | |
| 436 { | |
| 437 if (i >= result_.size()) | |
| 438 { | |
| 439 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 440 } | |
| 441 else | |
| 442 { | |
| 443 assert(result_[i] != NULL); | |
| 444 return result_[i]->FetchValue(db_, *statement_, outputs_[i], i); | |
| 445 } | |
| 446 } | |
| 447 | |
| 448 | |
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449 IResult* MySQLStatement::Execute(ITransaction& transaction, |
| 0 | 450 const Dictionary& parameters) |
| 451 { | |
| 452 std::list<long long int> int64Parameters; | |
| 453 | |
| 454 std::vector<MYSQL_BIND> inputs(formatter_.GetParametersCount()); | |
| 455 | |
| 456 for (size_t i = 0; i < inputs.size(); i++) | |
| 457 { | |
| 458 memset(&inputs[i], 0, sizeof(MYSQL_BIND)); | |
| 459 | |
| 460 const std::string& name = formatter_.GetParameterName(i); | |
| 461 if (!parameters.HasKey(name)) | |
| 462 { | |
| 463 LOG(ERROR) << "Missing required parameter in a SQL query: " << name; | |
| 464 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem); | |
| 465 } | |
| 466 | |
| 467 ValueType type = formatter_.GetParameterType(i); | |
| 468 | |
| 469 const IValue& value = parameters.GetValue(name); | |
| 470 if (value.GetType() != type) | |
| 471 { | |
| 472 LOG(ERROR) << "Bad type of argument provided to a SQL query: " << name; | |
| 473 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
| 474 } | |
| 475 | |
| 476 // https://dev.mysql.com/doc/refman/8.0/en/c-api-prepared-statement-type-codes.html | |
| 477 switch (type) | |
| 478 { | |
| 479 case ValueType_Integer64: | |
| 480 { | |
| 481 int64Parameters.push_back(dynamic_cast<const Integer64Value&>(value).GetValue()); | |
| 482 inputs[i].buffer = &int64Parameters.back(); | |
| 483 inputs[i].buffer_type = MYSQL_TYPE_LONGLONG; | |
| 484 break; | |
| 485 } | |
| 486 | |
| 487 case ValueType_Utf8String: | |
| 488 { | |
| 489 const std::string& utf8 = dynamic_cast<const Utf8StringValue&>(value).GetContent(); | |
| 490 inputs[i].buffer = const_cast<char*>(utf8.c_str()); | |
| 491 inputs[i].buffer_length = utf8.size(); | |
| 492 inputs[i].buffer_type = MYSQL_TYPE_STRING; | |
| 493 break; | |
| 494 } | |
| 495 | |
| 496 case ValueType_BinaryString: | |
| 497 { | |
| 498 const std::string& content = dynamic_cast<const BinaryStringValue&>(value).GetContent(); | |
| 499 inputs[i].buffer = const_cast<char*>(content.c_str()); | |
| 500 inputs[i].buffer_length = content.size(); | |
| 501 inputs[i].buffer_type = MYSQL_TYPE_BLOB; | |
| 502 break; | |
| 503 } | |
| 504 | |
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505 case ValueType_InputFile: |
| 0 | 506 { |
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507 const std::string& content = dynamic_cast<const InputFileValue&>(value).GetContent(); |
| 0 | 508 inputs[i].buffer = const_cast<char*>(content.c_str()); |
| 509 inputs[i].buffer_length = content.size(); | |
| 510 inputs[i].buffer_type = MYSQL_TYPE_BLOB; | |
| 511 break; | |
| 512 } | |
| 513 | |
| 514 case ValueType_Null: | |
| 515 { | |
| 516 inputs[i].buffer = NULL; | |
| 517 inputs[i].buffer_type = MYSQL_TYPE_NULL; | |
| 518 break; | |
| 519 } | |
| 520 | |
| 521 default: | |
| 522 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 523 } | |
| 524 } | |
| 525 | |
| 526 if (!inputs.empty()) | |
| 527 { | |
| 528 db_.CheckErrorCode(mysql_stmt_bind_param(statement_, &inputs[0])); | |
| 529 } | |
| 530 | |
| 531 db_.CheckErrorCode(mysql_stmt_execute(statement_)); | |
| 532 | |
| 533 outputs_.resize(result_.size()); | |
| 534 | |
| 535 for (size_t i = 0; i < result_.size(); i++) | |
| 536 { | |
| 537 assert(result_[i] != NULL); | |
| 538 result_[i]->PrepareBind(outputs_[i]); | |
| 539 } | |
| 540 | |
| 541 if (!outputs_.empty()) | |
| 542 { | |
| 543 db_.CheckErrorCode(mysql_stmt_bind_result(statement_, &outputs_[0])); | |
| 544 db_.CheckErrorCode(mysql_stmt_store_result(statement_)); | |
| 545 } | |
| 546 | |
| 547 return new MySQLResult(db_, *this); | |
| 548 } | |
| 549 | |
| 550 | |
|
23
b2ff1cd2907a
handling of implicit transactions in DatabaseManager
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
9
diff
changeset
|
551 void MySQLStatement::ExecuteWithoutResult(ITransaction& transaction, |
| 0 | 552 const Dictionary& parameters) |
| 553 { | |
|
157
275e14f57f1e
replacing deprecated std::auto_ptr by std::unique_ptr
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
152
diff
changeset
|
554 std::unique_ptr<IResult> dummy(Execute(transaction, parameters)); |
| 0 | 555 } |
| 556 } |