Mercurial > hg > orthanc
annotate OrthancFramework/Sources/SQLite/Connection.cpp @ 5853:4d932683049d get-scu tip
very first implementation of C-Get SCU
| author | Alain Mazy <am@orthanc.team> |
|---|---|
| date | Tue, 29 Oct 2024 17:25:49 +0100 |
| parents | f7adfb22e20e |
| children |
| 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) 2017-2023 Osimis S.A., Belgium |
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7 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium |
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8 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 0 | 9 * |
| 17 | 10 * Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 11 * | |
| 12 * Redistribution and use in source and binary forms, with or without | |
| 13 * modification, are permitted provided that the following conditions are | |
| 14 * met: | |
| 0 | 15 * |
| 17 | 16 * * Redistributions of source code must retain the above copyright |
| 17 * notice, this list of conditions and the following disclaimer. | |
| 18 * * Redistributions in binary form must reproduce the above | |
| 19 * copyright notice, this list of conditions and the following disclaimer | |
| 20 * in the documentation and/or other materials provided with the | |
| 21 * distribution. | |
| 22 * * Neither the name of Google Inc., the name of the CHU of Liege, | |
| 23 * nor the names of its contributors may be used to endorse or promote | |
| 24 * products derived from this software without specific prior written | |
| 25 * permission. | |
| 26 * | |
| 27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 30 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 31 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 32 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 33 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 34 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 35 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 36 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 37 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 0 | 38 **/ |
| 39 | |
| 40 | |
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41 #if ORTHANC_SQLITE_STANDALONE != 1 |
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42 #include "../PrecompiledHeaders.h" |
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43 #endif |
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44 |
| 0 | 45 #include "Connection.h" |
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46 #include "OrthancSQLiteException.h" |
| 0 | 47 |
| 48 #include <memory> | |
| 49 #include <cassert> | |
| 50 #include <string.h> | |
| 51 | |
| 1225 | 52 #if ORTHANC_SQLITE_STANDALONE != 1 |
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53 #include "../Logging.h" |
| 1225 | 54 #endif |
| 55 | |
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56 #include "sqlite3.h" |
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57 |
| 1225 | 58 |
| 59 | 59 namespace Orthanc |
| 0 | 60 { |
| 61 namespace SQLite | |
| 62 { | |
| 63 Connection::Connection() : | |
| 64 db_(NULL), | |
| 65 transactionNesting_(0), | |
| 66 needsRollback_(false) | |
| 67 { | |
| 68 } | |
| 69 | |
| 70 | |
| 71 Connection::~Connection() | |
| 72 { | |
| 73 Close(); | |
| 74 } | |
| 75 | |
| 76 | |
| 77 void Connection::CheckIsOpen() const | |
| 78 { | |
| 79 if (!db_) | |
| 80 { | |
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81 throw OrthancSQLiteException(ErrorCode_SQLiteNotOpened); |
| 0 | 82 } |
| 83 } | |
| 84 | |
| 85 void Connection::Open(const std::string& path) | |
| 86 { | |
| 87 if (db_) | |
| 88 { | |
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89 throw OrthancSQLiteException(ErrorCode_SQLiteAlreadyOpened); |
| 0 | 90 } |
| 91 | |
| 92 int err = sqlite3_open(path.c_str(), &db_); | |
| 93 if (err != SQLITE_OK) | |
| 94 { | |
| 95 Close(); | |
| 96 db_ = NULL; | |
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97 throw OrthancSQLiteException(ErrorCode_SQLiteCannotOpen); |
| 0 | 98 } |
| 99 | |
| 100 // Execute PRAGMAs at this point | |
| 101 // http://www.sqlite.org/pragma.html | |
| 102 Execute("PRAGMA FOREIGN_KEYS=ON;"); | |
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103 Execute("PRAGMA RECURSIVE_TRIGGERS=ON;"); |
| 0 | 104 } |
| 105 | |
| 106 void Connection::OpenInMemory() | |
| 107 { | |
| 108 Open(":memory:"); | |
| 109 } | |
| 110 | |
| 111 void Connection::Close() | |
| 112 { | |
| 113 ClearCache(); | |
| 114 | |
| 115 if (db_) | |
| 116 { | |
| 117 sqlite3_close(db_); | |
| 118 db_ = NULL; | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 void Connection::ClearCache() | |
| 123 { | |
| 124 for (CachedStatements::iterator | |
| 125 it = cachedStatements_.begin(); | |
| 656 | 126 it != cachedStatements_.end(); ++it) |
| 0 | 127 { |
| 128 delete it->second; | |
| 129 } | |
| 130 | |
| 131 cachedStatements_.clear(); | |
| 132 } | |
| 133 | |
| 134 | |
| 135 StatementReference& Connection::GetCachedStatement(const StatementId& id, | |
| 136 const char* sql) | |
| 137 { | |
| 138 CachedStatements::iterator i = cachedStatements_.find(id); | |
| 139 if (i != cachedStatements_.end()) | |
| 140 { | |
| 141 if (i->second->GetReferenceCount() >= 1) | |
| 142 { | |
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143 throw OrthancSQLiteException(ErrorCode_SQLiteStatementAlreadyUsed); |
| 0 | 144 } |
| 145 | |
| 146 return *i->second; | |
| 147 } | |
| 148 else | |
| 149 { | |
| 150 StatementReference* statement = new StatementReference(db_, sql); | |
| 151 cachedStatements_[id] = statement; | |
| 152 return *statement; | |
| 153 } | |
| 154 } | |
| 155 | |
| 156 | |
| 157 bool Connection::Execute(const char* sql) | |
| 158 { | |
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159 #if ORTHANC_SQLITE_STANDALONE != 1 |
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160 CLOG(TRACE, SQLITE) << "SQLite::Connection::Execute " << sql; |
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161 #endif |
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162 |
| 0 | 163 CheckIsOpen(); |
| 164 | |
| 165 int error = sqlite3_exec(db_, sql, NULL, NULL, NULL); | |
| 166 if (error == SQLITE_ERROR) | |
| 167 { | |
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168 #if ORTHANC_SQLITE_STANDALONE != 1 |
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169 LOG(ERROR) << "SQLite execute error: " << sqlite3_errmsg(db_) |
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170 << " (" << sqlite3_extended_errcode(db_) << ")"; |
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171 #endif |
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172 |
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173 throw OrthancSQLiteException(ErrorCode_SQLiteExecute); |
| 0 | 174 } |
| 175 else | |
| 176 { | |
| 177 return error == SQLITE_OK; | |
| 178 } | |
| 179 } | |
| 180 | |
| 4304 | 181 bool Connection::Execute(const std::string &sql) |
| 0 | 182 { |
| 4304 | 183 return Execute(sql.c_str()); |
| 0 | 184 } |
| 185 | |
| 186 // Info querying ------------------------------------------------------------- | |
| 187 | |
| 4304 | 188 bool Connection::IsSQLValid(const char* sql) |
| 0 | 189 { |
| 190 sqlite3_stmt* stmt = NULL; | |
| 191 if (sqlite3_prepare_v2(db_, sql, -1, &stmt, NULL) != SQLITE_OK) | |
| 192 return false; | |
| 193 | |
| 194 sqlite3_finalize(stmt); | |
| 195 return true; | |
| 196 } | |
| 197 | |
| 198 bool Connection::DoesTableOrIndexExist(const char* name, | |
| 199 const char* type) const | |
| 200 { | |
| 201 // Our SQL is non-mutating, so this cast is OK. | |
| 202 Statement statement(const_cast<Connection&>(*this), | |
| 203 "SELECT name FROM sqlite_master WHERE type=? AND name=?"); | |
| 204 statement.BindString(0, type); | |
| 205 statement.BindString(1, name); | |
| 206 return statement.Step(); // Table exists if any row was returned. | |
| 207 } | |
| 208 | |
| 209 bool Connection::DoesTableExist(const char* table_name) const | |
| 210 { | |
| 211 return DoesTableOrIndexExist(table_name, "table"); | |
| 212 } | |
| 213 | |
| 214 bool Connection::DoesIndexExist(const char* index_name) const | |
| 215 { | |
| 216 return DoesTableOrIndexExist(index_name, "index"); | |
| 217 } | |
| 218 | |
| 219 bool Connection::DoesColumnExist(const char* table_name, const char* column_name) const | |
| 220 { | |
| 221 std::string sql("PRAGMA TABLE_INFO("); | |
| 222 sql.append(table_name); | |
| 223 sql.append(")"); | |
| 224 | |
| 225 // Our SQL is non-mutating, so this cast is OK. | |
| 226 Statement statement(const_cast<Connection&>(*this), sql.c_str()); | |
| 227 | |
| 228 while (statement.Step()) { | |
| 229 if (!statement.ColumnString(1).compare(column_name)) | |
| 230 return true; | |
| 231 } | |
| 232 return false; | |
| 233 } | |
| 234 | |
| 235 int64_t Connection::GetLastInsertRowId() const | |
| 236 { | |
| 237 return sqlite3_last_insert_rowid(db_); | |
| 238 } | |
| 239 | |
| 240 int Connection::GetLastChangeCount() const | |
| 241 { | |
| 242 return sqlite3_changes(db_); | |
| 243 } | |
| 244 | |
| 245 int Connection::GetErrorCode() const | |
| 246 { | |
| 247 return sqlite3_errcode(db_); | |
| 248 } | |
| 249 | |
| 250 int Connection::GetLastErrno() const | |
| 251 { | |
| 252 int err = 0; | |
| 253 if (SQLITE_OK != sqlite3_file_control(db_, NULL, SQLITE_LAST_ERRNO, &err)) | |
| 254 return -2; | |
| 255 | |
| 256 return err; | |
| 257 } | |
| 258 | |
| 259 const char* Connection::GetErrorMessage() const | |
| 260 { | |
| 261 return sqlite3_errmsg(db_); | |
| 262 } | |
| 263 | |
| 264 | |
| 4304 | 265 int Connection::ExecuteAndReturnErrorCode(const char* sql) |
| 266 { | |
| 267 CheckIsOpen(); | |
| 268 return sqlite3_exec(db_, sql, NULL, NULL, NULL); | |
| 269 } | |
| 270 | |
| 271 bool Connection::HasCachedStatement(const StatementId &id) const | |
| 272 { | |
| 273 return cachedStatements_.find(id) != cachedStatements_.end(); | |
| 274 } | |
| 275 | |
| 276 int Connection::GetTransactionNesting() const | |
| 277 { | |
| 278 return transactionNesting_; | |
| 279 } | |
| 280 | |
| 0 | 281 bool Connection::BeginTransaction() |
| 282 { | |
| 283 if (needsRollback_) | |
| 284 { | |
| 285 assert(transactionNesting_ > 0); | |
| 286 | |
| 287 // When we're going to rollback, fail on this begin and don't actually | |
| 288 // mark us as entering the nested transaction. | |
| 289 return false; | |
| 290 } | |
| 291 | |
| 292 bool success = true; | |
| 293 if (!transactionNesting_) | |
| 294 { | |
| 295 needsRollback_ = false; | |
| 296 | |
| 297 Statement begin(*this, SQLITE_FROM_HERE, "BEGIN TRANSACTION"); | |
| 298 if (!begin.Run()) | |
| 299 return false; | |
| 300 } | |
| 301 transactionNesting_++; | |
| 302 return success; | |
| 303 } | |
| 304 | |
| 305 void Connection::RollbackTransaction() | |
| 306 { | |
| 307 if (!transactionNesting_) | |
| 308 { | |
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309 throw OrthancSQLiteException(ErrorCode_SQLiteRollbackWithoutTransaction); |
| 0 | 310 } |
| 311 | |
| 312 transactionNesting_--; | |
| 313 | |
| 314 if (transactionNesting_ > 0) | |
| 315 { | |
| 316 // Mark the outermost transaction as needing rollback. | |
| 317 needsRollback_ = true; | |
| 318 return; | |
| 319 } | |
| 320 | |
| 321 DoRollback(); | |
| 322 } | |
| 323 | |
| 324 bool Connection::CommitTransaction() | |
| 325 { | |
| 326 if (!transactionNesting_) | |
| 327 { | |
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328 throw OrthancSQLiteException(ErrorCode_SQLiteCommitWithoutTransaction); |
| 0 | 329 } |
| 330 transactionNesting_--; | |
| 331 | |
| 332 if (transactionNesting_ > 0) | |
| 333 { | |
| 334 // Mark any nested transactions as failing after we've already got one. | |
| 335 return !needsRollback_; | |
| 336 } | |
| 337 | |
| 338 if (needsRollback_) | |
| 339 { | |
| 340 DoRollback(); | |
| 341 return false; | |
| 342 } | |
| 343 | |
| 344 Statement commit(*this, SQLITE_FROM_HERE, "COMMIT"); | |
| 345 return commit.Run(); | |
| 346 } | |
| 347 | |
| 348 void Connection::DoRollback() | |
| 349 { | |
| 350 Statement rollback(*this, SQLITE_FROM_HERE, "ROLLBACK"); | |
| 351 rollback.Run(); | |
| 352 needsRollback_ = false; | |
| 353 } | |
| 354 | |
| 355 | |
| 356 | |
| 357 | |
| 358 | |
| 359 | |
| 360 static void ScalarFunctionCaller(sqlite3_context* rawContext, | |
| 361 int argc, | |
| 362 sqlite3_value** argv) | |
| 363 { | |
| 364 FunctionContext context(rawContext, argc, argv); | |
| 365 | |
| 366 void* payload = sqlite3_user_data(rawContext); | |
| 367 assert(payload != NULL); | |
| 368 | |
| 656 | 369 IScalarFunction& func = *reinterpret_cast<IScalarFunction*>(payload); |
| 0 | 370 func.Compute(context); |
| 371 } | |
| 372 | |
| 373 | |
| 374 static void ScalarFunctionDestroyer(void* payload) | |
| 375 { | |
| 376 assert(payload != NULL); | |
| 656 | 377 delete reinterpret_cast<IScalarFunction*>(payload); |
| 0 | 378 } |
| 379 | |
| 380 | |
| 381 IScalarFunction* Connection::Register(IScalarFunction* func) | |
| 382 { | |
| 383 int err = sqlite3_create_function_v2(db_, | |
| 384 func->GetName(), | |
| 385 func->GetCardinality(), | |
| 386 SQLITE_UTF8, | |
| 387 func, | |
| 388 ScalarFunctionCaller, | |
| 389 NULL, | |
| 390 NULL, | |
| 391 ScalarFunctionDestroyer); | |
| 392 | |
| 393 if (err != SQLITE_OK) | |
| 394 { | |
| 395 delete func; | |
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396 throw OrthancSQLiteException(ErrorCode_SQLiteRegisterFunction); |
| 0 | 397 } |
| 398 | |
| 399 return func; | |
| 400 } | |
| 401 | |
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402 |
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403 void Connection::FlushToDisk() |
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404 { |
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405 #if ORTHANC_SQLITE_STANDALONE != 1 |
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406 CLOG(TRACE, SQLITE) << "SQLite::Connection::FlushToDisk"; |
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407 #endif |
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408 |
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409 int err = sqlite3_wal_checkpoint(db_, NULL); |
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410 |
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411 if (err != SQLITE_OK) |
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412 { |
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413 throw OrthancSQLiteException(ErrorCode_SQLiteFlush); |
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414 } |
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415 } |
| 0 | 416 } |
| 417 } |