annotate Framework/MySQL/MySQLTransaction.cpp @ 385:346fe629d638 db-protobuf

clarifying types of since/limit
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 03 Apr 2023 11:19:19 +0200
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children 3d6886f3e5b3
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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) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Affero General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Affero General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Affero General Public License
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19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #include "MySQLTransaction.h"
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24
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25 #include "MySQLStatement.h"
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27 #include <Compatibility.h> // For std::unique_ptr<>
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28 #include <Logging.h>
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29 #include <OrthancException.h>
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31 #include <memory>
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32
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33 namespace OrthancDatabases
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34 {
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35 MySQLTransaction::MySQLTransaction(MySQLDatabase& db,
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36 TransactionType type) :
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37 db_(db),
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38 active_(false)
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39 {
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40 switch (type)
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41 {
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42 case TransactionType_ReadWrite:
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43 db_.ExecuteMultiLines("START TRANSACTION READ WRITE", false);
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44 break;
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45
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46 case TransactionType_ReadOnly:
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47 db_.ExecuteMultiLines("START TRANSACTION READ ONLY", false);
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48 break;
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49
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50 default:
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51 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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52 }
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53
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54 active_ = true;
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55 }
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56
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57
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58 MySQLTransaction::~MySQLTransaction()
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59 {
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60 if (active_)
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61 {
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62 LOG(INFO) << "An active MySQL transaction was dismissed";
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63
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64 try
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65 {
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66 db_.ExecuteMultiLines("ROLLBACK", false);
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67 }
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68 catch (Orthanc::OrthancException&)
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69 {
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70 // Ignore possible exceptions due to connection loss
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71 }
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72 }
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73 }
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75
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76 void MySQLTransaction::Rollback()
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77 {
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78 if (active_)
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79 {
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80 db_.ExecuteMultiLines("ROLLBACK", false);
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81 active_ = false;
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82 }
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83 else
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84 {
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85 LOG(ERROR) << "MySQL: This transaction is already finished";
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86 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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87 }
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88 }
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89
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90
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91 void MySQLTransaction::Commit()
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92 {
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93 if (active_)
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94 {
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95 db_.ExecuteMultiLines("COMMIT", false);
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96 active_ = false;
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97 }
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98 else
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99 {
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100 LOG(ERROR) << "MySQL: This transaction is already finished";
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101 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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102 }
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103 }
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104
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105
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106 IResult* MySQLTransaction::Execute(IPrecompiledStatement& statement,
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107 const Dictionary& parameters)
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108 {
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109 return dynamic_cast<MySQLStatement&>(statement).Execute(*this, parameters);
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110 }
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111
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112
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113 void MySQLTransaction::ExecuteWithoutResult(IPrecompiledStatement& statement,
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114 const Dictionary& parameters)
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115 {
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116 dynamic_cast<MySQLStatement&>(statement).ExecuteWithoutResult(*this, parameters);
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117 }
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118 }