Mercurial > hg > orthanc-databases
annotate Framework/MySQL/MySQLStatement.cpp @ 214:ab96698c73a3
removed useless information about read-only in ITransaction and IPrecompiledStatement
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 25 Mar 2021 13:56:26 +0100 |
| parents | 3236894320d6 |
| children | b97a537f4613 |
| 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) 2017-2021 Osimis S.A., Belgium |
| 0 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "MySQLStatement.h" | |
| 23 | |
| 24 #include "../Common/BinaryStringValue.h" | |
| 25 #include "../Common/FileValue.h" | |
| 26 #include "../Common/Integer64Value.h" | |
| 27 #include "../Common/NullValue.h" | |
| 28 #include "../Common/Utf8StringValue.h" | |
| 29 #include "MySQLResult.h" | |
| 30 | |
|
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31 #include <Compatibility.h> // For std::unique_ptr<> |
| 152 | 32 #include <Logging.h> |
| 33 #include <OrthancException.h> | |
| 0 | 34 |
| 35 #include <list> | |
| 36 #include <memory> | |
| 37 | |
| 38 namespace OrthancDatabases | |
| 39 { | |
| 40 class MySQLStatement::ResultField : public boost::noncopyable | |
| 41 { | |
| 42 private: | |
| 186 | 43 IValue* CreateIntegerValue(const MYSQL_BIND& bind) const |
| 0 | 44 { |
| 45 if (length_ != buffer_.size()) | |
| 46 { | |
| 47 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 48 } | |
| 49 | |
| 50 switch (mysqlType_) | |
| 51 { | |
| 52 case MYSQL_TYPE_TINY: | |
| 53 if (bind.is_unsigned) | |
| 54 { | |
| 55 return new Integer64Value(*reinterpret_cast<const uint8_t*>(&buffer_[0])); | |
| 56 } | |
| 57 else | |
| 58 { | |
| 59 return new Integer64Value(*reinterpret_cast<const int8_t*>(&buffer_[0])); | |
| 60 } | |
| 61 | |
| 62 case MYSQL_TYPE_SHORT: | |
| 63 if (bind.is_unsigned) | |
| 64 { | |
| 65 return new Integer64Value(*reinterpret_cast<const uint16_t*>(&buffer_[0])); | |
| 66 } | |
| 67 else | |
| 68 { | |
| 69 return new Integer64Value(*reinterpret_cast<const int16_t*>(&buffer_[0])); | |
| 70 } | |
| 71 | |
| 72 break; | |
| 73 | |
| 74 case MYSQL_TYPE_LONG: | |
| 75 if (bind.is_unsigned) | |
| 76 { | |
| 77 return new Integer64Value(*reinterpret_cast<const uint32_t*>(&buffer_[0])); | |
| 78 } | |
| 79 else | |
| 80 { | |
| 81 return new Integer64Value(*reinterpret_cast<const int32_t*>(&buffer_[0])); | |
| 82 } | |
| 83 | |
| 84 break; | |
| 85 | |
| 86 case MYSQL_TYPE_LONGLONG: | |
| 87 if (bind.is_unsigned) | |
| 88 { | |
| 89 uint64_t value = *reinterpret_cast<const uint64_t*>(&buffer_[0]); | |
| 90 if (static_cast<uint64_t>(static_cast<int64_t>(value)) != value) | |
| 91 { | |
| 92 LOG(WARNING) << "Overflow in a 64 bit integer"; | |
| 93 } | |
| 94 | |
| 95 return new Integer64Value(static_cast<int64_t>(value)); | |
| 96 } | |
| 97 else | |
| 98 { | |
| 99 return new Integer64Value(*reinterpret_cast<const int64_t*>(&buffer_[0])); | |
| 100 } | |
| 101 | |
| 102 break; | |
| 103 | |
| 104 default: | |
| 105 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 106 } | |
| 107 } | |
| 108 | |
| 109 | |
| 110 enum enum_field_types mysqlType_; | |
| 111 ValueType orthancType_; | |
| 112 std::string buffer_; | |
| 188 | 113 |
|
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114 #if (MYSQL_VERSION_ID < 80000) || defined(MARIADB_VERSION_ID) |
| 0 | 115 my_bool isNull_; |
| 116 my_bool isError_; | |
| 188 | 117 #else |
| 118 bool isNull_; | |
| 119 bool isError_; | |
| 120 #endif | |
| 121 | |
| 0 | 122 unsigned long length_; |
| 123 | |
| 124 public: | |
| 186 | 125 explicit ResultField(const MYSQL_FIELD& field) : |
| 126 mysqlType_(field.type), | |
| 127 length_(0) | |
| 0 | 128 { |
| 129 // https://dev.mysql.com/doc/refman/8.0/en/c-api-data-structures.html | |
| 130 // https://dev.mysql.com/doc/refman/8.0/en/mysql-stmt-fetch.html => size of "buffer_" | |
| 131 switch (field.type) | |
| 132 { | |
| 133 case MYSQL_TYPE_TINY: | |
| 134 orthancType_ = ValueType_Integer64; | |
| 135 buffer_.resize(1); | |
| 136 break; | |
| 137 | |
| 138 case MYSQL_TYPE_SHORT: | |
| 139 orthancType_ = ValueType_Integer64; | |
| 140 buffer_.resize(2); | |
| 141 break; | |
| 142 | |
| 143 case MYSQL_TYPE_LONG: | |
| 144 orthancType_ = ValueType_Integer64; | |
| 145 buffer_.resize(4); | |
| 146 break; | |
| 147 | |
| 148 case MYSQL_TYPE_LONGLONG: | |
| 149 orthancType_ = ValueType_Integer64; | |
| 150 buffer_.resize(8); | |
| 151 break; | |
| 152 | |
| 153 case MYSQL_TYPE_STRING: | |
| 154 case MYSQL_TYPE_VAR_STRING: | |
| 155 case MYSQL_TYPE_BLOB: | |
| 156 // https://medium.com/@adamhooper/in-mysql-never-use-utf8-use-utf8mb4-11761243e434 | |
| 157 switch (field.charsetnr) | |
| 158 { | |
| 159 case 45: // utf8mb4_general_ci | |
| 160 case 46: // utf8mb4_bin | |
| 161 case 224: // utf8mb4_unicode_ci => RECOMMENDED collation | |
|
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162 case 255: // utf8mb4_0900_ai_ci => necessary for MySQL 8.0 |
| 0 | 163 // https://stackoverflow.com/questions/766809/whats-the-difference-between-utf8-general-ci-and-utf8-unicode-ci |
| 164 orthancType_ = ValueType_Utf8String; | |
| 165 break; | |
| 166 | |
| 167 case 63: | |
| 168 orthancType_ = ValueType_BinaryString; | |
| 169 break; | |
| 170 | |
| 171 default: | |
| 172 LOG(ERROR) << "Unsupported MySQL charset: " << field.charsetnr; | |
| 173 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 174 } | |
| 175 | |
| 176 if (field.max_length > 0) | |
| 177 { | |
| 178 buffer_.resize(field.max_length); | |
| 179 } | |
| 180 | |
| 181 break; | |
| 182 | |
| 183 default: | |
| 184 LOG(ERROR) << "MYSQL_TYPE not implemented: " << field.type; | |
| 185 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 186 } | |
| 187 } | |
| 188 | |
| 189 enum enum_field_types GetMysqlType() const | |
| 190 { | |
| 191 return mysqlType_; | |
| 192 } | |
| 193 | |
| 194 ValueType GetOrthancType() const | |
| 195 { | |
| 196 return orthancType_; | |
| 197 } | |
| 198 | |
| 199 void PrepareBind(MYSQL_BIND& bind) | |
| 200 { | |
| 201 memset(&bind, 0, sizeof(bind)); | |
| 202 | |
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203 isNull_ = false; |
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204 isError_ = false; |
| 0 | 205 length_ = 0; |
| 206 | |
| 207 bind.buffer_length = buffer_.size(); | |
| 208 bind.buffer_type = mysqlType_; | |
| 209 bind.is_null = &isNull_; | |
| 210 bind.length = &length_; | |
| 211 | |
| 212 if (buffer_.empty()) | |
| 213 { | |
| 214 // Only fetches the actual size of the field (*): | |
| 215 // mysql_stmt_fetch_column() must be invoked afterward | |
| 216 bind.buffer = 0; | |
| 217 } | |
| 218 else | |
| 219 { | |
| 220 bind.buffer = &buffer_[0]; | |
| 221 bind.error = &isError_; | |
| 222 } | |
| 223 } | |
| 224 | |
| 225 | |
| 226 IValue* FetchValue(MySQLDatabase& database, | |
| 227 MYSQL_STMT& statement, | |
| 228 MYSQL_BIND& bind, | |
| 229 unsigned int column) const | |
| 230 { | |
| 231 if (isError_) | |
| 232 { | |
| 233 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); | |
| 234 } | |
| 235 else if (isNull_) | |
| 236 { | |
| 237 return new NullValue; | |
| 238 } | |
| 239 else if (orthancType_ == ValueType_Integer64) | |
| 240 { | |
| 241 return CreateIntegerValue(bind); | |
| 242 } | |
| 243 else if (orthancType_ == ValueType_Utf8String || | |
| 244 orthancType_ == ValueType_BinaryString) | |
| 245 { | |
| 246 std::string tmp; | |
| 247 tmp.resize(length_); | |
| 248 | |
| 249 if (!tmp.empty()) | |
| 250 { | |
| 251 if (buffer_.empty()) | |
| 252 { | |
| 253 bind.buffer = &tmp[0]; | |
| 254 bind.buffer_length = tmp.size(); | |
| 255 | |
| 256 database.CheckErrorCode(mysql_stmt_fetch_column(&statement, &bind, column, 0)); | |
| 257 } | |
| 258 else if (tmp.size() <= buffer_.size()) | |
| 259 { | |
| 260 memcpy(&tmp[0], &buffer_[0], length_); | |
| 261 } | |
| 262 else | |
| 263 { | |
| 264 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 265 } | |
| 266 } | |
| 267 | |
| 268 if (orthancType_ == ValueType_Utf8String) | |
| 269 { | |
| 270 return new Utf8StringValue(tmp); | |
| 271 } | |
| 272 else | |
| 273 { | |
| 274 return new BinaryStringValue(tmp); | |
| 275 } | |
| 276 } | |
| 277 else | |
| 278 { | |
| 279 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 280 } | |
| 281 } | |
| 282 }; | |
| 283 | |
| 284 | |
| 285 class MySQLStatement::ResultMetadata : public boost::noncopyable | |
| 286 { | |
| 287 private: | |
| 288 MYSQL_RES* metadata_; | |
| 289 | |
| 290 public: | |
| 291 ResultMetadata(MySQLDatabase& db, | |
| 292 MySQLStatement& statement) : | |
| 293 metadata_(NULL) | |
| 294 { | |
| 295 metadata_ = mysql_stmt_result_metadata(statement.GetObject()); | |
| 296 } | |
| 297 | |
| 298 ~ResultMetadata() | |
| 299 { | |
| 300 if (metadata_ != NULL) | |
| 301 { | |
| 302 mysql_free_result(metadata_); | |
| 303 } | |
| 304 } | |
| 305 | |
| 306 bool HasFields() const | |
| 307 { | |
| 308 return metadata_ != NULL; | |
| 309 } | |
| 310 | |
| 311 size_t GetFieldsCount() | |
| 312 { | |
| 313 if (HasFields()) | |
| 314 { | |
| 315 return mysql_num_fields(metadata_); | |
| 316 } | |
| 317 else | |
| 318 { | |
| 319 return 0; | |
| 320 } | |
| 321 } | |
| 322 | |
| 323 MYSQL_RES* GetObject() | |
| 324 { | |
| 325 return metadata_; | |
| 326 } | |
| 327 }; | |
| 328 | |
| 329 | |
| 330 void MySQLStatement::Close() | |
| 331 { | |
| 332 for (size_t i = 0; i < result_.size(); i++) | |
| 333 { | |
| 334 if (result_[i] != NULL) | |
| 335 { | |
| 336 delete result_[i]; | |
| 337 } | |
| 338 } | |
| 339 | |
| 340 if (statement_ != NULL) | |
| 341 { | |
| 342 mysql_stmt_close(statement_); | |
| 343 statement_ = NULL; | |
| 344 } | |
| 345 } | |
| 346 | |
| 347 | |
| 348 MySQLStatement::MySQLStatement(MySQLDatabase& db, | |
| 349 const Query& query) : | |
| 350 db_(db), | |
| 351 statement_(NULL), | |
| 352 formatter_(Dialect_MySQL) | |
| 353 { | |
| 354 std::string sql; | |
| 355 query.Format(sql, formatter_); | |
| 356 | |
| 357 statement_ = mysql_stmt_init(db.GetObject()); | |
| 358 if (statement_ == NULL) | |
| 359 { | |
| 360 db.LogError(); | |
| 361 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); | |
| 362 } | |
| 363 | |
|
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364 LOG(TRACE) << "Preparing MySQL statement: " << sql; |
| 0 | 365 |
| 366 db_.CheckErrorCode(mysql_stmt_prepare(statement_, sql.c_str(), sql.size())); | |
| 367 | |
| 368 if (mysql_stmt_param_count(statement_) != formatter_.GetParametersCount()) | |
| 369 { | |
| 370 Close(); | |
| 371 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 372 } | |
| 373 | |
| 374 try | |
| 375 { | |
| 376 ResultMetadata result(db, *this); | |
| 377 | |
| 378 if (result.HasFields()) | |
| 379 { | |
| 380 MYSQL_FIELD *field; | |
| 381 while ((field = mysql_fetch_field(result.GetObject()))) | |
| 382 { | |
| 383 result_.push_back(new ResultField(*field)); | |
| 384 } | |
| 385 } | |
| 386 | |
| 387 if (result_.size() != result.GetFieldsCount()) | |
| 388 { | |
| 389 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 390 } | |
| 391 } | |
| 392 catch (Orthanc::OrthancException&) | |
| 393 { | |
| 394 Close(); | |
| 395 throw; | |
| 396 } | |
| 397 | |
| 398 if (query.IsReadOnly()) | |
| 399 { | |
| 400 unsigned long type = (unsigned long) CURSOR_TYPE_READ_ONLY; | |
| 401 mysql_stmt_attr_set(statement_, STMT_ATTR_CURSOR_TYPE, (void*) &type); | |
| 402 } | |
| 403 } | |
| 404 | |
| 405 | |
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406 MySQLStatement::~MySQLStatement() |
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407 { |
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408 try |
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409 { |
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410 Close(); |
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411 } |
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412 catch (Orthanc::OrthancException&) |
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413 { |
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414 // Ignore possible exceptions due to connection loss |
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415 } |
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416 } |
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417 |
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418 |
| 0 | 419 MYSQL_STMT* MySQLStatement::GetObject() |
| 420 { | |
| 421 if (statement_ == NULL) | |
| 422 { | |
| 423 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 424 } | |
| 425 else | |
| 426 { | |
| 427 return statement_; | |
| 428 } | |
| 429 } | |
| 430 | |
| 431 | |
| 432 IValue* MySQLStatement::FetchResultField(size_t i) | |
| 433 { | |
| 434 if (i >= result_.size()) | |
| 435 { | |
| 436 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 437 } | |
| 438 else | |
| 439 { | |
| 440 assert(result_[i] != NULL); | |
| 441 return result_[i]->FetchValue(db_, *statement_, outputs_[i], i); | |
| 442 } | |
| 443 } | |
| 444 | |
| 445 | |
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446 IResult* MySQLStatement::Execute(ITransaction& transaction, |
| 0 | 447 const Dictionary& parameters) |
| 448 { | |
| 449 std::list<long long int> int64Parameters; | |
| 450 | |
| 451 std::vector<MYSQL_BIND> inputs(formatter_.GetParametersCount()); | |
| 452 | |
| 453 for (size_t i = 0; i < inputs.size(); i++) | |
| 454 { | |
| 455 memset(&inputs[i], 0, sizeof(MYSQL_BIND)); | |
| 456 | |
| 457 const std::string& name = formatter_.GetParameterName(i); | |
| 458 if (!parameters.HasKey(name)) | |
| 459 { | |
| 460 LOG(ERROR) << "Missing required parameter in a SQL query: " << name; | |
| 461 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem); | |
| 462 } | |
| 463 | |
| 464 ValueType type = formatter_.GetParameterType(i); | |
| 465 | |
| 466 const IValue& value = parameters.GetValue(name); | |
| 467 if (value.GetType() != type) | |
| 468 { | |
| 469 LOG(ERROR) << "Bad type of argument provided to a SQL query: " << name; | |
| 470 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
| 471 } | |
| 472 | |
| 473 // https://dev.mysql.com/doc/refman/8.0/en/c-api-prepared-statement-type-codes.html | |
| 474 switch (type) | |
| 475 { | |
| 476 case ValueType_Integer64: | |
| 477 { | |
| 478 int64Parameters.push_back(dynamic_cast<const Integer64Value&>(value).GetValue()); | |
| 479 inputs[i].buffer = &int64Parameters.back(); | |
| 480 inputs[i].buffer_type = MYSQL_TYPE_LONGLONG; | |
| 481 break; | |
| 482 } | |
| 483 | |
| 484 case ValueType_Utf8String: | |
| 485 { | |
| 486 const std::string& utf8 = dynamic_cast<const Utf8StringValue&>(value).GetContent(); | |
| 487 inputs[i].buffer = const_cast<char*>(utf8.c_str()); | |
| 488 inputs[i].buffer_length = utf8.size(); | |
| 489 inputs[i].buffer_type = MYSQL_TYPE_STRING; | |
| 490 break; | |
| 491 } | |
| 492 | |
| 493 case ValueType_BinaryString: | |
| 494 { | |
| 495 const std::string& content = dynamic_cast<const BinaryStringValue&>(value).GetContent(); | |
| 496 inputs[i].buffer = const_cast<char*>(content.c_str()); | |
| 497 inputs[i].buffer_length = content.size(); | |
| 498 inputs[i].buffer_type = MYSQL_TYPE_BLOB; | |
| 499 break; | |
| 500 } | |
| 501 | |
| 502 case ValueType_File: | |
| 503 { | |
| 504 const std::string& content = dynamic_cast<const FileValue&>(value).GetContent(); | |
| 505 inputs[i].buffer = const_cast<char*>(content.c_str()); | |
| 506 inputs[i].buffer_length = content.size(); | |
| 507 inputs[i].buffer_type = MYSQL_TYPE_BLOB; | |
| 508 break; | |
| 509 } | |
| 510 | |
| 511 case ValueType_Null: | |
| 512 { | |
| 513 inputs[i].buffer = NULL; | |
| 514 inputs[i].buffer_type = MYSQL_TYPE_NULL; | |
| 515 break; | |
| 516 } | |
| 517 | |
| 518 default: | |
| 519 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 520 } | |
| 521 } | |
| 522 | |
| 523 if (!inputs.empty()) | |
| 524 { | |
| 525 db_.CheckErrorCode(mysql_stmt_bind_param(statement_, &inputs[0])); | |
| 526 } | |
| 527 | |
| 528 db_.CheckErrorCode(mysql_stmt_execute(statement_)); | |
| 529 | |
| 530 outputs_.resize(result_.size()); | |
| 531 | |
| 532 for (size_t i = 0; i < result_.size(); i++) | |
| 533 { | |
| 534 assert(result_[i] != NULL); | |
| 535 result_[i]->PrepareBind(outputs_[i]); | |
| 536 } | |
| 537 | |
| 538 if (!outputs_.empty()) | |
| 539 { | |
| 540 db_.CheckErrorCode(mysql_stmt_bind_result(statement_, &outputs_[0])); | |
| 541 db_.CheckErrorCode(mysql_stmt_store_result(statement_)); | |
| 542 } | |
| 543 | |
| 544 return new MySQLResult(db_, *this); | |
| 545 } | |
| 546 | |
| 547 | |
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548 void MySQLStatement::ExecuteWithoutResult(ITransaction& transaction, |
| 0 | 549 const Dictionary& parameters) |
| 550 { | |
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275e14f57f1e
replacing deprecated std::auto_ptr by std::unique_ptr
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
152
diff
changeset
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551 std::unique_ptr<IResult> dummy(Execute(transaction, parameters)); |
| 0 | 552 } |
| 553 } |