Mercurial > hg > orthanc-databases

annotate Framework/Common/ImplicitTransaction.cpp @ 260:793bbbe11287

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IDatabaseBackend::HasRevisionsSupport()
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 19 Apr 2021 16:45:15 +0200
parents ab96698c73a3
children 16aac0287485
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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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22 #include "ImplicitTransaction.h"
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24 #include <Compatibility.h> // For std::unique_ptr<>
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25 #include <Logging.h>
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26 #include <OrthancException.h>
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28 #include <memory>
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30 namespace OrthancDatabases
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31 {
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32 static bool isErrorOnDoubleExecution_ = false;
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34
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35 ImplicitTransaction::ImplicitTransaction() :
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36 state_(State_Ready)
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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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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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78
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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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82
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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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116
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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::unique_ptr<IResult> result(ExecuteInternal(statement, parameters));
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128
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129 state_ = State_Executed;
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130 return result.release();
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131 }
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132
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133
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134 void ImplicitTransaction::ExecuteWithoutResult(IPrecompiledStatement& statement,
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135 const Dictionary& parameters)
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136 {
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137 CheckStateForExecution();
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138 ExecuteWithoutResultInternal(statement, parameters);
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139
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140 state_ = State_Executed;
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141 }
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142
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143
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144 void ImplicitTransaction::SetErrorOnDoubleExecution(bool isError)
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145 {
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146 isErrorOnDoubleExecution_ = isError;
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147 }
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149
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150 bool ImplicitTransaction::IsErrorOnDoubleExecution()
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151 {
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152 return isErrorOnDoubleExecution_;
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153 }
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154 }
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155