Mercurial > hg > orthanc-databases

annotate Framework/MySQL/MySQLDatabase.h @ 522:c49136b34891 large-queries tip

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author Alain Mazy <am@orthanc.team>
date Fri, 05 Jul 2024 09:15:54 +0200
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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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
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8 *
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9 * This program is free software: you can redistribute it and/or
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10 * modify it under the terms of the GNU Affero General Public License
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11 * as published by the Free Software Foundation, either version 3 of
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12 * the License, or (at your option) any later version.
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13 *
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14 * This program is distributed in the hope that it will be useful, but
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 * Affero General Public License for more details.
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18 *
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19 * You should have received a copy of the GNU Affero General Public License
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20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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21 **/
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23
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24 #pragma once
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25
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26 #if ORTHANC_ENABLE_MYSQL != 1
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27 # error MySQL support must be enabled to use this file
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28 #endif
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29
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30 #include "../Common/IDatabaseFactory.h"
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31 #include "MySQLParameters.h"
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32
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33 #include <mysql.h>
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34
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35 namespace OrthancDatabases
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36 {
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37 class MySQLTransaction;
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38
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39 class MySQLDatabase : public IDatabase
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40 {
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41 private:
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42 class Factory;
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43
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44 MySQLParameters parameters_;
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45 MYSQL *mysql_;
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47 void OpenInternal(const char* database);
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48
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49 void Close();
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50
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51 bool RunAdvisoryLockStatement(Query& query,
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52 const std::string& lock);
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54 public:
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55 explicit MySQLDatabase(const MySQLParameters& parameters);
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57 virtual ~MySQLDatabase();
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59 void LogError();
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61 void CheckErrorCode(int code);
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62
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63 void ThrowException();
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65 MYSQL* GetObject();
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66
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67 void Open();
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69 void OpenRoot()
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70 {
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71 OpenInternal(NULL);
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72 }
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73
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74 static void ClearDatabase(const MySQLParameters& parameters);
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75
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76 bool LookupGlobalStringVariable(std::string& value,
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77 const std::string& variable);
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79 bool LookupGlobalIntegerVariable(int64_t& value,
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80 const std::string& variable);
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81
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82 bool AcquireAdvisoryLock(const std::string& lock);
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84 bool ReleaseAdvisoryLock(const std::string& lock);
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86 void AdvisoryLock(const std::string& lock);
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87
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88 void ExecuteMultiLines(const std::string& sql,
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89 bool arobaseSeparator);
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91 bool DoesTableExist(MySQLTransaction& transaction,
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92 const std::string& name);
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93
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94 bool DoesDatabaseExist(MySQLTransaction& transaction,
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95 const std::string& name);
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96
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97 bool DoesTriggerExist(MySQLTransaction& transaction,
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98 const std::string& name);
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99
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100 virtual Dialect GetDialect() const ORTHANC_OVERRIDE
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101 {
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102 return Dialect_MySQL;
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103 }
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104
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105 virtual IPrecompiledStatement* Compile(const Query& query) ORTHANC_OVERRIDE;
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106
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107 virtual ITransaction* CreateTransaction(TransactionType type) ORTHANC_OVERRIDE;
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108
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109 static void GlobalFinalization();
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110
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111 static bool IsValidDatabaseIdentifier(const std::string& s);
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112
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113 class TransientAdvisoryLock
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114 {
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115 private:
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116 MySQLDatabase& database_;
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117 std::string lock_;
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119 public:
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120 TransientAdvisoryLock(MySQLDatabase& database,
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121 const std::string& lock);
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123 ~TransientAdvisoryLock();
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124 };
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126 static IDatabaseFactory* CreateDatabaseFactory(const MySQLParameters& parameters);
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127
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128 static MySQLDatabase* CreateDatabaseConnection(const MySQLParameters& parameters);
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129 };
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130 }