Mercurial > hg > orthanc
annotate OrthancFramework/Sources/SQLite/Connection.cpp @ 4984:c8cdf5163cd2
cppcheck
| author | Alain Mazy <am@osimis.io> |
|---|---|
| date | Mon, 25 Apr 2022 18:54:45 +0200 |
| parents | 43e613a7756b |
| children | 0ea402b4d901 |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 59 | 2 * Orthanc - A Lightweight, RESTful DICOM Store |
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3 * |
| 3063 | 4 * Copyright (C) 2012-2016 Sebastien Jodogne <s.jodogne@orthanc-labs.com>, |
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5 * Medical Physics Department, CHU of Liege, Belgium |
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6 * Copyright (C) 2017-2022 Osimis S.A., Belgium |
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7 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 0 | 8 * |
| 17 | 9 * Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 10 * | |
| 11 * Redistribution and use in source and binary forms, with or without | |
| 12 * modification, are permitted provided that the following conditions are | |
| 13 * met: | |
| 0 | 14 * |
| 17 | 15 * * Redistributions of source code must retain the above copyright |
| 16 * notice, this list of conditions and the following disclaimer. | |
| 17 * * Redistributions in binary form must reproduce the above | |
| 18 * copyright notice, this list of conditions and the following disclaimer | |
| 19 * in the documentation and/or other materials provided with the | |
| 20 * distribution. | |
| 21 * * Neither the name of Google Inc., the name of the CHU of Liege, | |
| 22 * nor the names of its contributors may be used to endorse or promote | |
| 23 * products derived from this software without specific prior written | |
| 24 * permission. | |
| 25 * | |
| 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 27 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 29 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 30 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 36 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 0 | 37 **/ |
| 38 | |
| 39 | |
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40 #if ORTHANC_SQLITE_STANDALONE != 1 |
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41 #include "../PrecompiledHeaders.h" |
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42 #endif |
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43 |
| 0 | 44 #include "Connection.h" |
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45 #include "OrthancSQLiteException.h" |
| 0 | 46 |
| 47 #include <memory> | |
| 48 #include <cassert> | |
| 49 #include <string.h> | |
| 50 | |
| 1225 | 51 #if ORTHANC_SQLITE_STANDALONE != 1 |
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52 #include "../Logging.h" |
| 1225 | 53 #endif |
| 54 | |
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55 #include "sqlite3.h" |
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56 |
| 1225 | 57 |
| 59 | 58 namespace Orthanc |
| 0 | 59 { |
| 60 namespace SQLite | |
| 61 { | |
| 62 Connection::Connection() : | |
| 63 db_(NULL), | |
| 64 transactionNesting_(0), | |
| 65 needsRollback_(false) | |
| 66 { | |
| 67 } | |
| 68 | |
| 69 | |
| 70 Connection::~Connection() | |
| 71 { | |
| 72 Close(); | |
| 73 } | |
| 74 | |
| 75 | |
| 76 void Connection::CheckIsOpen() const | |
| 77 { | |
| 78 if (!db_) | |
| 79 { | |
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80 throw OrthancSQLiteException(ErrorCode_SQLiteNotOpened); |
| 0 | 81 } |
| 82 } | |
| 83 | |
| 84 void Connection::Open(const std::string& path) | |
| 85 { | |
| 86 if (db_) | |
| 87 { | |
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88 throw OrthancSQLiteException(ErrorCode_SQLiteAlreadyOpened); |
| 0 | 89 } |
| 90 | |
| 91 int err = sqlite3_open(path.c_str(), &db_); | |
| 92 if (err != SQLITE_OK) | |
| 93 { | |
| 94 Close(); | |
| 95 db_ = NULL; | |
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96 throw OrthancSQLiteException(ErrorCode_SQLiteCannotOpen); |
| 0 | 97 } |
| 98 | |
| 99 // Execute PRAGMAs at this point | |
| 100 // http://www.sqlite.org/pragma.html | |
| 101 Execute("PRAGMA FOREIGN_KEYS=ON;"); | |
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102 Execute("PRAGMA RECURSIVE_TRIGGERS=ON;"); |
| 0 | 103 } |
| 104 | |
| 105 void Connection::OpenInMemory() | |
| 106 { | |
| 107 Open(":memory:"); | |
| 108 } | |
| 109 | |
| 110 void Connection::Close() | |
| 111 { | |
| 112 ClearCache(); | |
| 113 | |
| 114 if (db_) | |
| 115 { | |
| 116 sqlite3_close(db_); | |
| 117 db_ = NULL; | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 void Connection::ClearCache() | |
| 122 { | |
| 123 for (CachedStatements::iterator | |
| 124 it = cachedStatements_.begin(); | |
| 656 | 125 it != cachedStatements_.end(); ++it) |
| 0 | 126 { |
| 127 delete it->second; | |
| 128 } | |
| 129 | |
| 130 cachedStatements_.clear(); | |
| 131 } | |
| 132 | |
| 133 | |
| 134 StatementReference& Connection::GetCachedStatement(const StatementId& id, | |
| 135 const char* sql) | |
| 136 { | |
| 137 CachedStatements::iterator i = cachedStatements_.find(id); | |
| 138 if (i != cachedStatements_.end()) | |
| 139 { | |
| 140 if (i->second->GetReferenceCount() >= 1) | |
| 141 { | |
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142 throw OrthancSQLiteException(ErrorCode_SQLiteStatementAlreadyUsed); |
| 0 | 143 } |
| 144 | |
| 145 return *i->second; | |
| 146 } | |
| 147 else | |
| 148 { | |
| 149 StatementReference* statement = new StatementReference(db_, sql); | |
| 150 cachedStatements_[id] = statement; | |
| 151 return *statement; | |
| 152 } | |
| 153 } | |
| 154 | |
| 155 | |
| 156 bool Connection::Execute(const char* sql) | |
| 157 { | |
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158 #if ORTHANC_SQLITE_STANDALONE != 1 |
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159 CLOG(TRACE, SQLITE) << "SQLite::Connection::Execute " << sql; |
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160 #endif |
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161 |
| 0 | 162 CheckIsOpen(); |
| 163 | |
| 164 int error = sqlite3_exec(db_, sql, NULL, NULL, NULL); | |
| 165 if (error == SQLITE_ERROR) | |
| 166 { | |
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167 #if ORTHANC_SQLITE_STANDALONE != 1 |
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168 LOG(ERROR) << "SQLite execute error: " << sqlite3_errmsg(db_) |
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169 << " (" << sqlite3_extended_errcode(db_) << ")"; |
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170 #endif |
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171 |
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172 throw OrthancSQLiteException(ErrorCode_SQLiteExecute); |
| 0 | 173 } |
| 174 else | |
| 175 { | |
| 176 return error == SQLITE_OK; | |
| 177 } | |
| 178 } | |
| 179 | |
| 4304 | 180 bool Connection::Execute(const std::string &sql) |
| 0 | 181 { |
| 4304 | 182 return Execute(sql.c_str()); |
| 0 | 183 } |
| 184 | |
| 185 // Info querying ------------------------------------------------------------- | |
| 186 | |
| 4304 | 187 bool Connection::IsSQLValid(const char* sql) |
| 0 | 188 { |
| 189 sqlite3_stmt* stmt = NULL; | |
| 190 if (sqlite3_prepare_v2(db_, sql, -1, &stmt, NULL) != SQLITE_OK) | |
| 191 return false; | |
| 192 | |
| 193 sqlite3_finalize(stmt); | |
| 194 return true; | |
| 195 } | |
| 196 | |
| 197 bool Connection::DoesTableOrIndexExist(const char* name, | |
| 198 const char* type) const | |
| 199 { | |
| 200 // Our SQL is non-mutating, so this cast is OK. | |
| 201 Statement statement(const_cast<Connection&>(*this), | |
| 202 "SELECT name FROM sqlite_master WHERE type=? AND name=?"); | |
| 203 statement.BindString(0, type); | |
| 204 statement.BindString(1, name); | |
| 205 return statement.Step(); // Table exists if any row was returned. | |
| 206 } | |
| 207 | |
| 208 bool Connection::DoesTableExist(const char* table_name) const | |
| 209 { | |
| 210 return DoesTableOrIndexExist(table_name, "table"); | |
| 211 } | |
| 212 | |
| 213 bool Connection::DoesIndexExist(const char* index_name) const | |
| 214 { | |
| 215 return DoesTableOrIndexExist(index_name, "index"); | |
| 216 } | |
| 217 | |
| 218 bool Connection::DoesColumnExist(const char* table_name, const char* column_name) const | |
| 219 { | |
| 220 std::string sql("PRAGMA TABLE_INFO("); | |
| 221 sql.append(table_name); | |
| 222 sql.append(")"); | |
| 223 | |
| 224 // Our SQL is non-mutating, so this cast is OK. | |
| 225 Statement statement(const_cast<Connection&>(*this), sql.c_str()); | |
| 226 | |
| 227 while (statement.Step()) { | |
| 228 if (!statement.ColumnString(1).compare(column_name)) | |
| 229 return true; | |
| 230 } | |
| 231 return false; | |
| 232 } | |
| 233 | |
| 234 int64_t Connection::GetLastInsertRowId() const | |
| 235 { | |
| 236 return sqlite3_last_insert_rowid(db_); | |
| 237 } | |
| 238 | |
| 239 int Connection::GetLastChangeCount() const | |
| 240 { | |
| 241 return sqlite3_changes(db_); | |
| 242 } | |
| 243 | |
| 244 int Connection::GetErrorCode() const | |
| 245 { | |
| 246 return sqlite3_errcode(db_); | |
| 247 } | |
| 248 | |
| 249 int Connection::GetLastErrno() const | |
| 250 { | |
| 251 int err = 0; | |
| 252 if (SQLITE_OK != sqlite3_file_control(db_, NULL, SQLITE_LAST_ERRNO, &err)) | |
| 253 return -2; | |
| 254 | |
| 255 return err; | |
| 256 } | |
| 257 | |
| 258 const char* Connection::GetErrorMessage() const | |
| 259 { | |
| 260 return sqlite3_errmsg(db_); | |
| 261 } | |
| 262 | |
| 263 | |
| 4304 | 264 int Connection::ExecuteAndReturnErrorCode(const char* sql) |
| 265 { | |
| 266 CheckIsOpen(); | |
| 267 return sqlite3_exec(db_, sql, NULL, NULL, NULL); | |
| 268 } | |
| 269 | |
| 270 bool Connection::HasCachedStatement(const StatementId &id) const | |
| 271 { | |
| 272 return cachedStatements_.find(id) != cachedStatements_.end(); | |
| 273 } | |
| 274 | |
| 275 int Connection::GetTransactionNesting() const | |
| 276 { | |
| 277 return transactionNesting_; | |
| 278 } | |
| 279 | |
| 0 | 280 bool Connection::BeginTransaction() |
| 281 { | |
| 282 if (needsRollback_) | |
| 283 { | |
| 284 assert(transactionNesting_ > 0); | |
| 285 | |
| 286 // When we're going to rollback, fail on this begin and don't actually | |
| 287 // mark us as entering the nested transaction. | |
| 288 return false; | |
| 289 } | |
| 290 | |
| 291 bool success = true; | |
| 292 if (!transactionNesting_) | |
| 293 { | |
| 294 needsRollback_ = false; | |
| 295 | |
| 296 Statement begin(*this, SQLITE_FROM_HERE, "BEGIN TRANSACTION"); | |
| 297 if (!begin.Run()) | |
| 298 return false; | |
| 299 } | |
| 300 transactionNesting_++; | |
| 301 return success; | |
| 302 } | |
| 303 | |
| 304 void Connection::RollbackTransaction() | |
| 305 { | |
| 306 if (!transactionNesting_) | |
| 307 { | |
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308 throw OrthancSQLiteException(ErrorCode_SQLiteRollbackWithoutTransaction); |
| 0 | 309 } |
| 310 | |
| 311 transactionNesting_--; | |
| 312 | |
| 313 if (transactionNesting_ > 0) | |
| 314 { | |
| 315 // Mark the outermost transaction as needing rollback. | |
| 316 needsRollback_ = true; | |
| 317 return; | |
| 318 } | |
| 319 | |
| 320 DoRollback(); | |
| 321 } | |
| 322 | |
| 323 bool Connection::CommitTransaction() | |
| 324 { | |
| 325 if (!transactionNesting_) | |
| 326 { | |
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327 throw OrthancSQLiteException(ErrorCode_SQLiteCommitWithoutTransaction); |
| 0 | 328 } |
| 329 transactionNesting_--; | |
| 330 | |
| 331 if (transactionNesting_ > 0) | |
| 332 { | |
| 333 // Mark any nested transactions as failing after we've already got one. | |
| 334 return !needsRollback_; | |
| 335 } | |
| 336 | |
| 337 if (needsRollback_) | |
| 338 { | |
| 339 DoRollback(); | |
| 340 return false; | |
| 341 } | |
| 342 | |
| 343 Statement commit(*this, SQLITE_FROM_HERE, "COMMIT"); | |
| 344 return commit.Run(); | |
| 345 } | |
| 346 | |
| 347 void Connection::DoRollback() | |
| 348 { | |
| 349 Statement rollback(*this, SQLITE_FROM_HERE, "ROLLBACK"); | |
| 350 rollback.Run(); | |
| 351 needsRollback_ = false; | |
| 352 } | |
| 353 | |
| 354 | |
| 355 | |
| 356 | |
| 357 | |
| 358 | |
| 359 static void ScalarFunctionCaller(sqlite3_context* rawContext, | |
| 360 int argc, | |
| 361 sqlite3_value** argv) | |
| 362 { | |
| 363 FunctionContext context(rawContext, argc, argv); | |
| 364 | |
| 365 void* payload = sqlite3_user_data(rawContext); | |
| 366 assert(payload != NULL); | |
| 367 | |
| 656 | 368 IScalarFunction& func = *reinterpret_cast<IScalarFunction*>(payload); |
| 0 | 369 func.Compute(context); |
| 370 } | |
| 371 | |
| 372 | |
| 373 static void ScalarFunctionDestroyer(void* payload) | |
| 374 { | |
| 375 assert(payload != NULL); | |
| 656 | 376 delete reinterpret_cast<IScalarFunction*>(payload); |
| 0 | 377 } |
| 378 | |
| 379 | |
| 380 IScalarFunction* Connection::Register(IScalarFunction* func) | |
| 381 { | |
| 382 int err = sqlite3_create_function_v2(db_, | |
| 383 func->GetName(), | |
| 384 func->GetCardinality(), | |
| 385 SQLITE_UTF8, | |
| 386 func, | |
| 387 ScalarFunctionCaller, | |
| 388 NULL, | |
| 389 NULL, | |
| 390 ScalarFunctionDestroyer); | |
| 391 | |
| 392 if (err != SQLITE_OK) | |
| 393 { | |
| 394 delete func; | |
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395 throw OrthancSQLiteException(ErrorCode_SQLiteRegisterFunction); |
| 0 | 396 } |
| 397 | |
| 398 return func; | |
| 399 } | |
| 400 | |
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401 |
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402 void Connection::FlushToDisk() |
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403 { |
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404 #if ORTHANC_SQLITE_STANDALONE != 1 |
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405 CLOG(TRACE, SQLITE) << "SQLite::Connection::FlushToDisk"; |
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406 #endif |
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407 |
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408 int err = sqlite3_wal_checkpoint(db_, NULL); |
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409 |
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410 if (err != SQLITE_OK) |
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411 { |
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412 throw OrthancSQLiteException(ErrorCode_SQLiteFlush); |
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413 } |
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414 } |
| 0 | 415 } |
| 416 } |