Mercurial > hg > orthanc
annotate OrthancFramework/Sources/SQLite/Connection.h @ 5566:8b507b1514eb find-refactoring
cache dynamic SQLite statements (imported from large-queries branch)
| author | Alain Mazy <am@orthanc.team> |
|---|---|
| date | Tue, 23 Apr 2024 14:37:11 +0200 |
| parents | 48b8dae6dc77 |
| children | 3f13db27b399 |
| 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) 2017-2024 Osimis S.A., Belgium |
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7 * Copyright (C) 2021-2024 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 | |
| 40 #pragma once | |
| 41 | |
| 42 #include "Statement.h" | |
| 43 #include "IScalarFunction.h" | |
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44 #include "SQLiteTypes.h" |
| 0 | 45 |
| 46 #include <string> | |
| 47 #include <map> | |
| 48 | |
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49 #if !defined(__ORTHANC_FILE__) |
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50 # if defined(_MSC_VER) |
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51 # pragma message("Warning: Macro __ORTHANC_FILE__ is not defined, this will leak the full path of the source files in the binaries") |
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52 # else |
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53 # warning Warning: Macro __ORTHANC_FILE__ is not defined, this will leak the full path of the source files in the binaries |
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54 # endif |
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55 # define __ORTHANC_FILE__ __FILE__ |
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56 #endif |
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57 |
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58 #define SQLITE_FROM_HERE ::Orthanc::SQLite::StatementId(__ORTHANC_FILE__, __LINE__) |
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59 #define SQLITE_FROM_HERE_DYNAMIC(sql) ::Orthanc::SQLite::StatementId(__ORTHANC_FILE__, __LINE__, sql) |
| 0 | 60 |
| 59 | 61 namespace Orthanc |
| 0 | 62 { |
| 63 namespace SQLite | |
| 64 { | |
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65 class ORTHANC_PUBLIC Connection : NonCopyable |
| 0 | 66 { |
| 67 friend class Statement; | |
| 68 friend class Transaction; | |
| 69 | |
| 70 private: | |
| 71 // All cached statements. Keeping a reference to these statements means that | |
| 72 // they'll remain active. | |
| 73 typedef std::map<StatementId, StatementReference*> CachedStatements; | |
| 74 CachedStatements cachedStatements_; | |
| 75 | |
| 76 // The actual sqlite database. Will be NULL before Init has been called or if | |
| 77 // Init resulted in an error. | |
| 78 sqlite3* db_; | |
| 79 | |
| 80 // Number of currently-nested transactions. | |
| 81 int transactionNesting_; | |
| 82 | |
| 83 // True if any of the currently nested transactions have been rolled back. | |
| 84 // When we get to the outermost transaction, this will determine if we do | |
| 85 // a rollback instead of a commit. | |
| 86 bool needsRollback_; | |
| 87 | |
| 88 void ClearCache(); | |
| 89 | |
| 90 void CheckIsOpen() const; | |
| 91 | |
| 92 sqlite3* GetWrappedObject() | |
| 93 { | |
| 94 return db_; | |
| 95 } | |
| 96 | |
| 97 StatementReference& GetCachedStatement(const StatementId& id, | |
| 98 const char* sql); | |
| 99 | |
| 100 bool DoesTableOrIndexExist(const char* name, | |
| 101 const char* type) const; | |
| 102 | |
| 103 void DoRollback(); | |
| 104 | |
| 105 public: | |
| 106 // The database is opened by calling Open[InMemory](). Any uncommitted | |
| 107 // transactions will be rolled back when this object is deleted. | |
| 108 Connection(); | |
| 109 ~Connection(); | |
| 110 | |
| 111 void Open(const std::string& path); | |
| 112 | |
| 113 void OpenInMemory(); | |
| 114 | |
| 115 void Close(); | |
| 116 | |
| 117 bool Execute(const char* sql); | |
| 118 | |
| 4304 | 119 bool Execute(const std::string& sql); |
| 0 | 120 |
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121 void FlushToDisk(); |
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122 |
| 0 | 123 IScalarFunction* Register(IScalarFunction* func); // Takes the ownership of the function |
| 124 | |
| 125 // Info querying ------------------------------------------------------------- | |
| 126 | |
| 127 // Used to check a |sql| statement for syntactic validity. If the | |
| 128 // statement is valid SQL, returns true. | |
| 129 bool IsSQLValid(const char* sql); | |
| 130 | |
| 131 // Returns true if the given table exists. | |
| 132 bool DoesTableExist(const char* table_name) const; | |
| 133 | |
| 134 // Returns true if the given index exists. | |
| 135 bool DoesIndexExist(const char* index_name) const; | |
| 136 | |
| 137 // Returns true if a column with the given name exists in the given table. | |
| 138 bool DoesColumnExist(const char* table_name, const char* column_name) const; | |
| 139 | |
| 140 // Returns sqlite's internal ID for the last inserted row. Valid only | |
| 141 // immediately after an insert. | |
| 142 int64_t GetLastInsertRowId() const; | |
| 143 | |
| 144 // Returns sqlite's count of the number of rows modified by the last | |
| 145 // statement executed. Will be 0 if no statement has executed or the database | |
| 146 // is closed. | |
| 147 int GetLastChangeCount() const; | |
| 148 | |
| 149 // Errors -------------------------------------------------------------------- | |
| 150 | |
| 151 // Returns the error code associated with the last sqlite operation. | |
| 152 int GetErrorCode() const; | |
| 153 | |
| 154 // Returns the errno associated with GetErrorCode(). See | |
| 155 // SQLITE_LAST_ERRNO in SQLite documentation. | |
| 156 int GetLastErrno() const; | |
| 157 | |
| 158 // Returns a pointer to a statically allocated string associated with the | |
| 159 // last sqlite operation. | |
| 160 const char* GetErrorMessage() const; | |
| 161 | |
| 162 | |
| 163 // Diagnostics (for unit tests) ---------------------------------------------- | |
| 164 | |
| 165 int ExecuteAndReturnErrorCode(const char* sql); | |
| 166 | |
| 4304 | 167 bool HasCachedStatement(const StatementId& id) const; |
| 0 | 168 |
| 4304 | 169 int GetTransactionNesting() const; |
| 0 | 170 |
| 171 // Transactions -------------------------------------------------------------- | |
| 172 | |
| 173 bool BeginTransaction(); | |
| 174 void RollbackTransaction(); | |
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175 bool CommitTransaction(); |
| 0 | 176 }; |
| 177 } | |
| 178 } |