Mercurial > hg > orthanc-databases

annotate Framework/Common/ImplicitTransaction.cpp @ 152:063aa53b5917

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 01 Jul 2020 08:54:32 +0200
parents 4cd7e45b671e
children 275e14f57f1e
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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) 2017-2020 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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21
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22 #include "ImplicitTransaction.h"
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23
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24 #include <Logging.h>
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25 #include <OrthancException.h>
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26
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27 #include <memory>
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29 namespace OrthancDatabases
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30 {
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31 static bool isErrorOnDoubleExecution_ = false;
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32
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33
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34 ImplicitTransaction::ImplicitTransaction() :
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35 state_(State_Ready),
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36 readOnly_(true)
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37 {
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38 }
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41 ImplicitTransaction::~ImplicitTransaction()
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42 {
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43 switch (state_)
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44 {
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45 case State_Committed:
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46 case State_Ready:
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47 break;
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49 case State_Executed:
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50 LOG(ERROR) << "An implicit transaction has not been committed";
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51 break;
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53 default:
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54 LOG(ERROR) << "Internal error in ImplicitTransaction destructor";
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55 break;
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56 }
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57 }
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60 void ImplicitTransaction::Rollback()
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61 {
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62 LOG(ERROR) << "Cannot rollback an implicit transaction";
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63 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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64 }
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66
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67 void ImplicitTransaction::Commit()
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68 {
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69 switch (state_)
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70 {
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71 case State_Ready:
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72 LOG(ERROR) << "Cannot commit an implicit transaction that has not been executed yet";
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73 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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74
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75 case State_Executed:
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76 state_ = State_Committed;
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77 break;
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79 case State_Committed:
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80 LOG(ERROR) << "Cannot commit twice an implicit transaction";
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81 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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83 default:
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84 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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85 }
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86 }
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88
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89 void ImplicitTransaction::CheckStateForExecution()
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90 {
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91 switch (state_)
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92 {
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93 case State_Ready:
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94 // OK
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95 break;
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96
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97 case State_Executed:
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98 if (isErrorOnDoubleExecution_)
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99 {
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100 /**
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101 * This allows to detect errors wrt. the handling of
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102 * transactions in the Orthanc core.
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103 *
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104 * In Orthanc <= 1.3.2: problems in "/changes" (a transaction
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105 * was missing because of GetPublicId()).
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106 **/
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107 LOG(ERROR) << "Cannot execute more than one statement in an implicit transaction";
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108 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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109 }
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110
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111 break;
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112
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113 case State_Committed:
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114 LOG(ERROR) << "Cannot commit twice an implicit transaction";
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115 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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117 default:
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118 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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119 }
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120 }
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121
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122
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123 IResult* ImplicitTransaction::Execute(IPrecompiledStatement& statement,
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124 const Dictionary& parameters)
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125 {
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126 CheckStateForExecution();
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127 std::auto_ptr<IResult> result(ExecuteInternal(statement, parameters));
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128
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129 if (!statement.IsReadOnly())
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130 {
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131 readOnly_ = false;
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132 }
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133
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134 state_ = State_Executed;
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135 return result.release();
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136 }
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137
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138
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139 void ImplicitTransaction::ExecuteWithoutResult(IPrecompiledStatement& statement,
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140 const Dictionary& parameters)
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141 {
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142 CheckStateForExecution();
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143 ExecuteWithoutResultInternal(statement, parameters);
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144
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145 if (!statement.IsReadOnly())
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146 {
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147 readOnly_ = false;
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148 }
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149
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150 state_ = State_Executed;
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151 }
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152
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153
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154 void ImplicitTransaction::SetErrorOnDoubleExecution(bool isError)
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155 {
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156 isErrorOnDoubleExecution_ = isError;
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157 }
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158
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159
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160 bool ImplicitTransaction::IsErrorOnDoubleExecution()
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161 {
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162 return isErrorOnDoubleExecution_;
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163 }
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164 }
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165