Mercurial > hg > orthanc

annotate OrthancServer/OrthancFindRequestHandler.cpp @ 1823:0ef4e6e66b56

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 25 Nov 2015 10:32:54 +0100
parents 30e97a1f4093
children d364926389e0
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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 #include "PrecompiledHeadersServer.h"
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34 #include "OrthancFindRequestHandler.h"
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35
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36 #include "../Core/DicomFormat/DicomArray.h"
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37 #include "../Core/Logging.h"
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38 #include "FromDcmtkBridge.h"
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39 #include "OrthancInitialization.h"
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40 #include "Search/LookupResource.h"
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41 #include "ServerToolbox.h"
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42
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43 #include <boost/regex.hpp>
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44
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45
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46 namespace Orthanc
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47 {
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48 static void AddAnswer(DicomFindAnswers& answers,
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49 const Json::Value& resource,
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50 const DicomArray& query)
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51 {
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52 DicomMap result;
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53
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54 for (size_t i = 0; i < query.GetSize(); i++)
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55 {
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56 // Fix issue 30 (QR response missing "Query/Retrieve Level" (008,0052))
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57 if (query.GetElement(i).GetTag() == DICOM_TAG_QUERY_RETRIEVE_LEVEL)
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58 {
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59 result.SetValue(query.GetElement(i).GetTag(), query.GetElement(i).GetValue());
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60 }
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61 else if (query.GetElement(i).GetTag() == DICOM_TAG_SPECIFIC_CHARACTER_SET)
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62 {
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63 }
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64 else
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65 {
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66 std::string tag = query.GetElement(i).GetTag().Format();
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67 std::string value;
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68 if (resource.isMember(tag))
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69 {
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70 value = resource.get(tag, Json::arrayValue).get("Value", "").asString();
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71 result.SetValue(query.GetElement(i).GetTag(), value);
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72 }
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73 else
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74 {
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75 result.SetValue(query.GetElement(i).GetTag(), "");
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76 }
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77 }
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78 }
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79
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80 if (result.GetSize() == 0)
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81 {
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82 LOG(WARNING) << "The C-FIND request does not return any DICOM tag";
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83 }
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84 else
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85 {
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86 answers.Add(result);
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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 void OrthancFindRequestHandler::Handle(DicomFindAnswers& answers,
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92 const DicomMap& input,
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93 const std::string& remoteIp,
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94 const std::string& remoteAet,
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95 const std::string& calledAet)
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96 {
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97 /**
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98 * Ensure that the remote modality is known to Orthanc.
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99 **/
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100
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101 RemoteModalityParameters modality;
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102
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103 if (!Configuration::LookupDicomModalityUsingAETitle(modality, remoteAet))
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104 {
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105 throw OrthancException(ErrorCode_UnknownModality);
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106 }
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107
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108 // ModalityManufacturer manufacturer = modality.GetManufacturer();
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109
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110 bool caseSensitivePN = Configuration::GetGlobalBoolParameter("CaseSensitivePN", false);
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111
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112
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113 /**
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114 * Retrieve the query level.
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115 **/
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116
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117 const DicomValue* levelTmp = input.TestAndGetValue(DICOM_TAG_QUERY_RETRIEVE_LEVEL);
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118 if (levelTmp == NULL ||
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119 levelTmp->IsNull() ||
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120 levelTmp->IsBinary())
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121 {
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122 throw OrthancException(ErrorCode_BadRequest);
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123 }
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124
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125 ResourceType level = StringToResourceType(levelTmp->GetContent().c_str());
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126
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127 if (level != ResourceType_Patient &&
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128 level != ResourceType_Study &&
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129 level != ResourceType_Series &&
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130 level != ResourceType_Instance)
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131 {
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132 throw OrthancException(ErrorCode_NotImplemented);
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133 }
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134
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135
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136 DicomArray query(input);
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137 LOG(INFO) << "DICOM C-Find request at level: " << EnumerationToString(level);
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138
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139 for (size_t i = 0; i < query.GetSize(); i++)
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140 {
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141 if (!query.GetElement(i).GetValue().IsNull())
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142 {
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143 LOG(INFO) << " " << query.GetElement(i).GetTag()
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144 << " " << FromDcmtkBridge::GetName(query.GetElement(i).GetTag())
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145 << " = " << query.GetElement(i).GetValue().GetContent();
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146 }
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147 }
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148
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149
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150 /**
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151 * Build up the query object.
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152 **/
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153
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154 LookupResource finder(level);
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155
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156 for (size_t i = 0; i < query.GetSize(); i++)
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157 {
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158 const DicomTag tag = query.GetElement(i).GetTag();
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159
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160 if (query.GetElement(i).GetValue().IsNull() ||
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161 tag == DICOM_TAG_QUERY_RETRIEVE_LEVEL ||
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162 tag == DICOM_TAG_SPECIFIC_CHARACTER_SET)
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163 {
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164 continue;
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165 }
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166
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167 std::string value = query.GetElement(i).GetValue().GetContent();
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168 if (value.size() == 0)
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169 {
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170 // An empty string corresponds to a "*" wildcard constraint, so we ignore it
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171 continue;
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172 }
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173
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174 ValueRepresentation vr = FromDcmtkBridge::GetValueRepresentation(tag);
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175
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176 // DICOM specifies that searches must be case sensitive, except
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177 // for tags with a PN value representation
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178 bool sensitive = true;
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179 if (vr == ValueRepresentation_PatientName)
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180 {
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181 sensitive = caseSensitivePN;
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182 }
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183
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184 finder.AddDicomConstraint(tag, value, sensitive);
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185 }
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186
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187
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188 /**
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189 * Run the query.
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190 **/
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191
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192 size_t maxResults = (level == ResourceType_Instance) ? maxInstances_ : maxResults_;
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193
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194 std::vector<std::string> resources, instances;
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195 context_.GetIndex().FindCandidates(resources, instances, finder);
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196
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197 assert(resources.size() == instances.size());
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198 bool complete = true;
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199
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200 for (size_t i = 0; i < instances.size(); i++)
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201 {
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202 Json::Value dicom;
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203 context_.ReadJson(dicom, instances[i]);
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204
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205 if (finder.IsMatch(dicom))
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206 {
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207 if (maxResults != 0 &&
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208 answers.GetSize() >= maxResults)
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209 {
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210 complete = false;
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211 break;
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212 }
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213 else
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214 {
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215 AddAnswer(answers, dicom, query);
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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 LOG(INFO) << "Number of matching resources: " << answers.GetSize();
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221
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222 answers.SetComplete(complete);
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223 }
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224 }