Mercurial > hg > orthanc

annotate OrthancServer/OrthancFindRequestHandler.cpp @ 1755:39c37a994b2f db-changes

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handling of DICOM_TAG_MODALITIES_IN_STUDY
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 28 Oct 2015 12:02:15 +0100
parents faf2ecab3472
children 98abb8d7f905
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #define USE_LOOKUP_RESOURCE 0
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34
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35
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36
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37 #include "PrecompiledHeadersServer.h"
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38 #include "OrthancFindRequestHandler.h"
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39
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40 #include "../Core/Logging.h"
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41 #include "../Core/DicomFormat/DicomArray.h"
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42 #include "ServerToolbox.h"
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43 #include "OrthancInitialization.h"
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44 #include "FromDcmtkBridge.h"
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45
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46 #include "ResourceFinder.h"
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47 #include "DicomFindQuery.h"
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48 #include "Search/LookupResource.h"
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49
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50 #include <boost/regex.hpp>
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51
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52
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53 namespace Orthanc
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54 {
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55 static void AddAnswer(DicomFindAnswers& answers,
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56 const Json::Value& resource,
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57 const DicomArray& query)
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58 {
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59 DicomMap result;
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60
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61 for (size_t i = 0; i < query.GetSize(); i++)
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62 {
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63 // Fix issue 30 (QR response missing "Query/Retrieve Level" (008,0052))
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64 if (query.GetElement(i).GetTag() == DICOM_TAG_QUERY_RETRIEVE_LEVEL)
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65 {
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66 result.SetValue(query.GetElement(i).GetTag(), query.GetElement(i).GetValue());
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67 }
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68 else if (query.GetElement(i).GetTag() == DICOM_TAG_SPECIFIC_CHARACTER_SET)
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69 {
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70 }
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71 else
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72 {
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73 std::string tag = query.GetElement(i).GetTag().Format();
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74 std::string value;
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75 if (resource.isMember(tag))
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76 {
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77 value = resource.get(tag, Json::arrayValue).get("Value", "").asString();
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78 result.SetValue(query.GetElement(i).GetTag(), value);
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79 }
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80 else
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81 {
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82 result.SetValue(query.GetElement(i).GetTag(), "");
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83 }
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84 }
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85 }
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86
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87 if (result.GetSize() == 0)
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88 {
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89 LOG(WARNING) << "The C-FIND request does not return any DICOM tag";
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90 }
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91 else
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92 {
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93 answers.Add(result);
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94 }
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95 }
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96
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97
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98 namespace
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99 {
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100 class CFindQuery : public DicomFindQuery
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101 {
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102 private:
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103 DicomFindAnswers& answers_;
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104 ServerIndex& index_;
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105 const DicomArray& query_;
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106 bool hasModalitiesInStudy_;
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107 std::set<std::string> modalitiesInStudy_;
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108
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109 public:
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110 CFindQuery(DicomFindAnswers& answers,
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111 ServerIndex& index,
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112 const DicomArray& query) :
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113 answers_(answers),
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114 index_(index),
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115 query_(query),
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116 hasModalitiesInStudy_(false)
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117 {
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118 }
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119
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120 void SetModalitiesInStudy(const std::string& value)
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121 {
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122 hasModalitiesInStudy_ = true;
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123
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124 std::vector<std::string> tmp;
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125 Toolbox::TokenizeString(tmp, value, '\\');
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126
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127 for (size_t i = 0; i < tmp.size(); i++)
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128 {
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129 modalitiesInStudy_.insert(tmp[i]);
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130 }
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131 }
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132
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133 virtual bool HasMainDicomTagsFilter(ResourceType level) const
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134 {
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135 if (DicomFindQuery::HasMainDicomTagsFilter(level))
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136 {
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137 return true;
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138 }
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139
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140 return (level == ResourceType_Study &&
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141 hasModalitiesInStudy_);
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142 }
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143
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144 virtual bool FilterMainDicomTags(const std::string& resourceId,
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145 ResourceType level,
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146 const DicomMap& mainTags) const
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147 {
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148 if (!DicomFindQuery::FilterMainDicomTags(resourceId, level, mainTags))
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149 {
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150 return false;
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151 }
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152
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153 if (level != ResourceType_Study ||
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154 !hasModalitiesInStudy_)
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155 {
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156 return true;
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157 }
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158
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159 try
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160 {
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161 // We are considering a single study, and the
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162 // "MODALITIES_IN_STUDY" tag is set in the C-Find. Check
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163 // whether one of its child series matches one of the
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164 // modalities.
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165
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166 Json::Value study;
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167 if (index_.LookupResource(study, resourceId, ResourceType_Study))
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168 {
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169 // Loop over the series of the considered study.
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170 for (Json::Value::ArrayIndex j = 0; j < study["Series"].size(); j++)
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171 {
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172 Json::Value series;
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173 if (index_.LookupResource(series, study["Series"][j].asString(), ResourceType_Series))
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174 {
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175 // Get the modality of this series
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176 if (series["MainDicomTags"].isMember("Modality"))
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177 {
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178 std::string modality = series["MainDicomTags"]["Modality"].asString();
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179 if (modalitiesInStudy_.find(modality) != modalitiesInStudy_.end())
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180 {
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181 // This series of the considered study matches one
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182 // of the required modalities. Take the study into
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183 // consideration for future filtering.
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184 return true;
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185 }
612
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186 }
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187 }
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188 }
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189 }
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190 }
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191 catch (OrthancException&)
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192 {
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193 // This resource has probably been deleted during the find request
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194 }
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195
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196 return false;
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197 }
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198
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199 virtual bool HasInstanceFilter() const
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200 {
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201 return true;
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202 }
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203
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204 virtual bool FilterInstance(const std::string& instanceId,
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205 const Json::Value& content) const
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206 {
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207 bool ok = DicomFindQuery::FilterInstance(instanceId, content);
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208
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209 if (ok)
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210 {
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211 // Add this resource to the answers
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212 AddAnswer(answers_, content, query_);
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213 }
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214
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215 return ok;
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216 }
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217 };
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218 }
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219
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220
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221
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222 bool OrthancFindRequestHandler::Handle(DicomFindAnswers& answers,
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223 const DicomMap& input,
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224 const std::string& remoteIp,
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225 const std::string& remoteAet)
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226 {
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227 /**
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228 * Ensure that the calling modality is known to Orthanc.
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229 **/
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230
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231 RemoteModalityParameters modality;
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232
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233 if (!Configuration::LookupDicomModalityUsingAETitle(modality, remoteAet))
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234 {
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235 throw OrthancException(ErrorCode_UnknownModality);
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236 }
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237
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238 // ModalityManufacturer manufacturer = modality.GetManufacturer();
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239
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240 bool caseSensitivePN = Configuration::GetGlobalBoolParameter("CaseSensitivePN", false);
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241
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242
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243 /**
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244 * Retrieve the query level.
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245 **/
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246
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247 const DicomValue* levelTmp = input.TestAndGetValue(DICOM_TAG_QUERY_RETRIEVE_LEVEL);
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248 if (levelTmp == NULL ||
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249 levelTmp->IsNull() ||
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250 levelTmp->IsBinary())
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251 {
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252 throw OrthancException(ErrorCode_BadRequest);
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253 }
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254
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255 ResourceType level = StringToResourceType(levelTmp->GetContent().c_str());
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256
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257 if (level != ResourceType_Patient &&
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258 level != ResourceType_Study &&
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259 level != ResourceType_Series &&
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260 level != ResourceType_Instance)
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261 {
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262 throw OrthancException(ErrorCode_NotImplemented);
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263 }
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264
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265
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266 DicomArray query(input);
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267 LOG(INFO) << "DICOM C-Find request at level: " << EnumerationToString(level);
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268
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269 for (size_t i = 0; i < query.GetSize(); i++)
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270 {
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271 if (!query.GetElement(i).GetValue().IsNull())
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272 {
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273 LOG(INFO) << " " << query.GetElement(i).GetTag()
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274 << " " << FromDcmtkBridge::GetName(query.GetElement(i).GetTag())
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275 << " = " << query.GetElement(i).GetValue().GetContent();
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276 }
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277 }
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278
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279
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280 /**
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281 * Build up the query object.
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282 **/
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283
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284 #if USE_LOOKUP_RESOURCE == 1
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285 LookupResource finder(level);
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286 #else
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287 CFindQuery findQuery(answers, context_.GetIndex(), query);
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288 findQuery.SetLevel(level);
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289 #endif
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290
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291 for (size_t i = 0; i < query.GetSize(); i++)
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292 {
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293 const DicomTag tag = query.GetElement(i).GetTag();
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294
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295 if (query.GetElement(i).GetValue().IsNull() ||
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296 tag == DICOM_TAG_QUERY_RETRIEVE_LEVEL ||
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297 tag == DICOM_TAG_SPECIFIC_CHARACTER_SET)
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298 {
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299 continue;
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300 }
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301
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302 std::string value = query.GetElement(i).GetValue().GetContent();
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303 if (value.size() == 0)
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304 {
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305 // An empty string corresponds to a "*" wildcard constraint, so we ignore it
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306 continue;
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307 }
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308
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309 #if USE_LOOKUP_RESOURCE == 1
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310 finder.AddDicomConstraint(tag, value, caseSensitivePN);
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311 #else
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312
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313 if (tag == DICOM_TAG_MODALITIES_IN_STUDY)
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314 {
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315 findQuery.SetModalitiesInStudy(value);
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316 }
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317 else
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318 {
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319 findQuery.SetConstraint(tag, value, caseSensitivePN);
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320 }
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321 #endif
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322 }
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323
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324
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325 /**
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326 * Run the query.
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327 **/
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328
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329 #if USE_LOOKUP_RESOURCE != 1
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330 ResourceFinder finder(context_);
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331
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332 switch (level)
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333 {
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334 case ResourceType_Patient:
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335 case ResourceType_Study:
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336 case ResourceType_Series:
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337 finder.SetMaxResults(maxResults_);
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338 break;
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339
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340 case ResourceType_Instance:
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341 finder.SetMaxResults(maxInstances_);
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342 break;
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343
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344 default:
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345 throw OrthancException(ErrorCode_InternalError);
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346 }
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347 #else
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348 size_t maxResults = (level == ResourceType_Instance) ? maxInstances_ : maxResults_;
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349
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350 #endif
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351
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352 #if USE_LOOKUP_RESOURCE == 1
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353 std::vector<std::string> resources, instances;
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354 context_.GetIndex().FindCandidates(resources, instances, finder);
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355
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356 assert(resources.size() == instances.size());
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357 bool finished = true;
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358
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359 for (size_t i = 0; i < instances.size(); i++)
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360 {
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361 Json::Value dicom;
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362 context_.ReadJson(dicom, instances[i]);
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363
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364 if (finder.IsMatch(dicom))
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365 {
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366 if (maxResults != 0 &&
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367 answers.GetSize() >= maxResults)
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368 {
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369 finished = false;
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370 break;
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371 }
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372 else
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373 {
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374 AddAnswer(answers, dicom, query);
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375 }
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376 }
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377 }
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378
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379 #else
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380 std::list<std::string> tmp;
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381 bool finished = finder.Apply(tmp, findQuery);
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382 #endif
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383
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384 LOG(INFO) << "Number of matching resources: " << answers.GetSize();
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385
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386 return finished;
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387 }
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388 }