annotate Framework/Common/Query.cpp @ 308:6a668f5d1069

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 12 Jul 2021 17:22:53 +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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22 #include "Query.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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27 #include <boost/regex.hpp>
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29 namespace OrthancDatabases
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30 {
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31 class Query::Token : public boost::noncopyable
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32 {
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33 private:
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34 bool isParameter_;
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35 std::string content_;
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36
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37 public:
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38 Token(bool isParameter,
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39 const std::string& content) :
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40 isParameter_(isParameter),
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41 content_(content)
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42 {
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43 }
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45 bool IsParameter() const
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46 {
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47 return isParameter_;
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48 }
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49
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50 const std::string& GetContent() const
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51 {
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52 return content_;
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53 }
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54 };
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55
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57 void Query::Setup(const std::string& sql)
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58 {
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59 boost::regex regex("\\$\\{(.*?)\\}");
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60
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61 std::string::const_iterator last = sql.begin();
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62 boost::sregex_token_iterator it(sql.begin(), sql.end(), regex, 0);
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63 boost::sregex_token_iterator end;
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64
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65 while (it != end)
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66 {
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67 if (last != it->first)
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68 {
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69 tokens_.push_back(new Token(false, std::string(last, it->first)));
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70 }
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71
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72 std::string parameter = *it;
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73 assert(parameter.size() >= 3);
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74 parameter = parameter.substr(2, parameter.size() - 3);
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76 tokens_.push_back(new Token(true, parameter));
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77 parameters_[parameter] = ValueType_Null;
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78
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79 last = it->second;
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81 ++it;
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82 }
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83
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84 if (last != sql.end())
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85 {
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86 tokens_.push_back(new Token(false, std::string(last, sql.end())));
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87 }
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88 }
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89
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90
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91 Query::Query(const std::string& sql) :
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92 readOnly_(false)
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93 {
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94 Setup(sql);
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95 }
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97
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98 Query::Query(const std::string& sql,
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99 bool readOnly) :
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100 readOnly_(readOnly)
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101 {
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102 Setup(sql);
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103 }
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104
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105
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106 Query::~Query()
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107 {
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108 for (size_t i = 0; i < tokens_.size(); i++)
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109 {
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110 assert(tokens_[i] != NULL);
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111 delete tokens_[i];
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112 }
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113 }
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114
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115
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116 bool Query::HasParameter(const std::string& parameter) const
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117 {
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118 return parameters_.find(parameter) != parameters_.end();
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119 }
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120
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121
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122 ValueType Query::GetType(const std::string& parameter) const
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123 {
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124 Parameters::const_iterator found = parameters_.find(parameter);
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125
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126 if (found == parameters_.end())
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127 {
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128 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem,
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129 "Inexistent parameter in a SQL query: " + parameter);
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130 }
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131 else
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132 {
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133 return found->second;
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134 }
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135 }
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136
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137
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138 void Query::SetType(const std::string& parameter,
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139 ValueType type)
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140 {
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141 Parameters::iterator found = parameters_.find(parameter);
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142
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143 if (found == parameters_.end())
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144 {
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145 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem,
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146 "Inexistent parameter in a SQL query: " + parameter);
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147 }
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148 else
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149 {
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150 found->second = type;
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151 }
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152 }
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153
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154
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155 void Query::Format(std::string& result,
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156 IParameterFormatter& formatter) const
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157 {
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158 result.clear();
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159
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160 for (size_t i = 0; i < tokens_.size(); i++)
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161 {
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162 assert(tokens_[i] != NULL);
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163
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164 const std::string& content = tokens_[i]->GetContent();
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165
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166 if (tokens_[i]->IsParameter())
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167 {
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168 std::string parameter;
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169 formatter.Format(parameter, content, GetType(content));
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170 result += parameter;
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171 }
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172 else
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173 {
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174 result += content;
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175 }
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176 }
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177 }
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178 }