annotate Framework/MySQL/MySQLTransaction.cpp @ 96:a060f97a1f72 db-changes

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 21 Jan 2019 14:37:32 +0100
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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) 2017-2019 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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22 #include "MySQLTransaction.h"
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24 #include "MySQLStatement.h"
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26 #include <Core/Logging.h>
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27 #include <Core/OrthancException.h>
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29 #include <memory>
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31 namespace OrthancDatabases
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32 {
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33 MySQLTransaction::MySQLTransaction(MySQLDatabase& db) :
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34 db_(db),
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35 readOnly_(true),
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36 active_(false)
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37 {
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38 db_.Execute("START TRANSACTION", false);
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39 active_ = true;
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40 }
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43 MySQLTransaction::~MySQLTransaction()
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44 {
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45 if (active_)
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46 {
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47 LOG(WARNING) << "An active MySQL transaction was dismissed";
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49 try
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50 {
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51 db_.Execute("ROLLBACK", false);
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52 }
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53 catch (Orthanc::OrthancException&)
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54 {
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55 // Ignore possible exceptions due to connection loss
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56 }
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57 }
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58 }
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61 void MySQLTransaction::Rollback()
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62 {
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63 if (active_)
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64 {
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65 db_.Execute("ROLLBACK", false);
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66 active_ = false;
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67 readOnly_ = true;
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68 }
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69 else
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70 {
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71 LOG(ERROR) << "MySQL: This transaction is already finished";
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72 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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73 }
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74 }
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77 void MySQLTransaction::Commit()
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78 {
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79 if (active_)
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80 {
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81 db_.Execute("COMMIT", false);
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82 active_ = false;
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83 readOnly_ = true;
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84 }
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85 else
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86 {
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87 LOG(ERROR) << "MySQL: This transaction is already finished";
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88 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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89 }
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90 }
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93 IResult* MySQLTransaction::Execute(IPrecompiledStatement& statement,
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94 const Dictionary& parameters)
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95 {
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96 std::auto_ptr<IResult> result(dynamic_cast<MySQLStatement&>(statement).Execute(*this, parameters));
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97
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98 if (!statement.IsReadOnly())
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99 {
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100 readOnly_ = false;
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101 }
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102
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103 return result.release();
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104 }
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105
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106
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107 void MySQLTransaction::ExecuteWithoutResult(IPrecompiledStatement& statement,
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108 const Dictionary& parameters)
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109 {
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110 dynamic_cast<MySQLStatement&>(statement).ExecuteWithoutResult(*this, parameters);
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111
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112 if (!statement.IsReadOnly())
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113 {
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114 readOnly_ = false;
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115 }
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116 }
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117 }