annotate Framework/MySQL/MySQLTransaction.cpp @ 317:be8b0ac774e2

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 19 Jul 2021 15:16:20 +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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3236894320d6 upgrade to year 2021
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5 * Copyright (C) 2017-2021 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "MySQLTransaction.h"
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23
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24 #include "MySQLStatement.h"
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26 #include <Compatibility.h> // For std::unique_ptr<>
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27 #include <Logging.h>
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28 #include <OrthancException.h>
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30 #include <memory>
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31
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32 namespace OrthancDatabases
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33 {
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34 MySQLTransaction::MySQLTransaction(MySQLDatabase& db,
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35 TransactionType type) :
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36 db_(db),
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37 active_(false)
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38 {
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39 switch (type)
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40 {
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41 case TransactionType_ReadWrite:
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42 db_.ExecuteMultiLines("START TRANSACTION READ WRITE", false);
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43 break;
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44
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45 case TransactionType_ReadOnly:
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46 db_.ExecuteMultiLines("START TRANSACTION READ ONLY", false);
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47 break;
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48
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49 default:
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50 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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51 }
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52
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53 active_ = true;
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54 }
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57 MySQLTransaction::~MySQLTransaction()
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58 {
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59 if (active_)
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60 {
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61 LOG(INFO) << "An active MySQL transaction was dismissed";
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62
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63 try
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64 {
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65 db_.ExecuteMultiLines("ROLLBACK", false);
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66 }
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67 catch (Orthanc::OrthancException&)
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68 {
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69 // Ignore possible exceptions due to connection loss
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70 }
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71 }
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72 }
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75 void MySQLTransaction::Rollback()
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76 {
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77 if (active_)
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78 {
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79 db_.ExecuteMultiLines("ROLLBACK", false);
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80 active_ = false;
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81 }
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82 else
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83 {
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84 LOG(ERROR) << "MySQL: This transaction is already finished";
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85 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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86 }
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87 }
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90 void MySQLTransaction::Commit()
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91 {
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92 if (active_)
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93 {
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94 db_.ExecuteMultiLines("COMMIT", false);
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95 active_ = false;
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96 }
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97 else
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98 {
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99 LOG(ERROR) << "MySQL: This transaction is already finished";
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100 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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101 }
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102 }
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103
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104
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105 IResult* MySQLTransaction::Execute(IPrecompiledStatement& statement,
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106 const Dictionary& parameters)
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107 {
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108 return dynamic_cast<MySQLStatement&>(statement).Execute(*this, parameters);
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109 }
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111
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112 void MySQLTransaction::ExecuteWithoutResult(IPrecompiledStatement& statement,
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113 const Dictionary& parameters)
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114 {
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115 dynamic_cast<MySQLStatement&>(statement).ExecuteWithoutResult(*this, parameters);
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116 }
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117 }