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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) 2017-2018 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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25
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26 #include <Core/Logging.h>
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27 #include <Core/OrthancException.h>
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28
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29 #include <memory>
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30
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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");
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39 active_ = true;
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40 }
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41
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42
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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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48
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49 try
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50 {
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51 db_.Execute("ROLLBACK");
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52 }
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53 catch (Orthanc::OrthancException&)
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54 {
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55 }
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56 }
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57 }
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58
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59
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60 void MySQLTransaction::Rollback()
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61 {
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62 if (active_)
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63 {
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64 db_.Execute("ROLLBACK");
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65 active_ = false;
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66 readOnly_ = true;
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67 }
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68 else
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69 {
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70 LOG(ERROR) << "MySQL: This transaction is already finished";
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71 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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72 }
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73 }
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74
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75
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76 void MySQLTransaction::Commit()
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77 {
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78 if (active_)
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79 {
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80 db_.Execute("COMMIT");
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81 active_ = false;
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82 readOnly_ = true;
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83 }
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84 else
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85 {
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86 LOG(ERROR) << "MySQL: This transaction is already finished";
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87 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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88 }
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89 }
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90
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91
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92 IResult* MySQLTransaction::Execute(IPrecompiledStatement& statement,
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93 const Dictionary& parameters)
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94 {
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95 std::auto_ptr<IResult> result(dynamic_cast<MySQLStatement&>(statement).Execute(*this, parameters));
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96
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97 if (!statement.IsReadOnly())
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98 {
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99 readOnly_ = false;
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100 }
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101
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102 return result.release();
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103 }
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104
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105
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106 void MySQLTransaction::ExecuteWithoutResult(IPrecompiledStatement& statement,
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107 const Dictionary& parameters)
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108 {
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109 dynamic_cast<MySQLStatement&>(statement).ExecuteWithoutResult(*this, parameters);
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110
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111 if (!statement.IsReadOnly())
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112 {
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113 readOnly_ = false;
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114 }
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115 }
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116 }
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