Mercurial > hg > orthanc

annotate OrthancServer/OrthancFindRequestHandler.cpp @ 1888:512b6e76f531

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Lua: "IncomingFindRequestFilter()" to apply filters to incoming C-Find requests
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 11 Dec 2015 16:39:51 +0100
parents 4e7c318a3f69
children d7f63122c7f3
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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/Lua/LuaFunctionCall.h"
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38 #include "../Core/Logging.h"
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39 #include "FromDcmtkBridge.h"
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40 #include "OrthancInitialization.h"
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41 #include "Search/LookupResource.h"
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42 #include "ServerToolbox.h"
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43
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44 #include <boost/regex.hpp>
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45
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46
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47 namespace Orthanc
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48 {
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49 static void AddAnswer(DicomFindAnswers& answers,
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50 const Json::Value& resource,
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51 const DicomArray& query,
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52 const std::list<DicomTag>& sequencesToReturn)
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53 {
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54 DicomMap result;
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55
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56 for (size_t i = 0; i < query.GetSize(); i++)
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57 {
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58 if (query.GetElement(i).GetTag() == DICOM_TAG_QUERY_RETRIEVE_LEVEL)
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59 {
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60 // Fix issue 30 on Google Code (QR response missing "Query/Retrieve Level" (008,0052))
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61 result.SetValue(query.GetElement(i).GetTag(), query.GetElement(i).GetValue());
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62 }
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63 else if (query.GetElement(i).GetTag() == DICOM_TAG_SPECIFIC_CHARACTER_SET)
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64 {
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65 // Do not include the encoding, this is handled by class ParsedDicomFile
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66 }
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67 else
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68 {
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69 std::string tag = query.GetElement(i).GetTag().Format();
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70 std::string value;
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71 if (resource.isMember(tag))
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72 {
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73 value = resource.get(tag, Json::arrayValue).get("Value", "").asString();
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74 result.SetValue(query.GetElement(i).GetTag(), value);
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75 }
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76 else
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77 {
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78 result.SetValue(query.GetElement(i).GetTag(), "");
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79 }
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80 }
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81 }
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82
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83 if (result.GetSize() == 0 &&
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84 sequencesToReturn.empty())
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85 {
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86 LOG(WARNING) << "The C-FIND request does not return any DICOM tag";
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87 }
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88 else if (sequencesToReturn.empty())
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89 {
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90 answers.Add(result);
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91 }
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92 else
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93 {
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94 ParsedDicomFile dicom(result);
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95
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96 for (std::list<DicomTag>::const_iterator tag = sequencesToReturn.begin();
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97 tag != sequencesToReturn.end(); ++tag)
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98 {
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99 std::cout << tag->Format();
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100
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101 const Json::Value& source = resource[tag->Format()];
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102
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103 if (source.type() == Json::objectValue &&
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104 source.isMember("Type") &&
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105 source.isMember("Value") &&
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106 source["Type"].asString() == "Sequence" &&
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107 source["Value"].type() == Json::arrayValue)
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108 {
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109 Json::Value content = Json::arrayValue;
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110
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111 for (Json::Value::ArrayIndex i = 0; i < source["Value"].size(); i++)
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112 {
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113 Json::Value item;
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114 Toolbox::SimplifyTags(item, source["Value"][i], DicomToJsonFormat_Short);
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115 content.append(item);
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116 }
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117
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118 dicom.Replace(*tag, content, false);
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119 }
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120 }
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121
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122 answers.Add(dicom);
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123 }
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124 }
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125
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126
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127
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128 bool OrthancFindRequestHandler::FilterQueryTag(std::string& value /* can be modified */,
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129 ResourceType level,
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130 const DicomTag& tag,
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131 ModalityManufacturer manufacturer)
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132 {
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133 switch (manufacturer)
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134 {
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135 case ModalityManufacturer_EFilm2:
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136 // Following Denis Nesterov's mail on 2015-11-30
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137 if (tag == DicomTag(0x0008, 0x0000) || // "GenericGroupLength"
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138 tag == DicomTag(0x0010, 0x0000) || // "GenericGroupLength"
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139 tag == DicomTag(0x0020, 0x0000)) // "GenericGroupLength"
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140 {
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141 return false;
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142 }
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143
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144 break;
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145
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146 case ModalityManufacturer_Vitrea:
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147 // Following Denis Nesterov's mail on 2015-11-30
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148 if (tag == DicomTag(0x5653, 0x0010)) // "PrivateCreator = Vital Images SW 3.4"
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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 break;
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154
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155 default:
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156 break;
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157 }
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158
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159 return true;
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160 }
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161
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162
1888
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163 bool OrthancFindRequestHandler::ApplyLuaFilter(DicomMap& target,
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164 const DicomMap& source,
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165 const std::string& remoteIp,
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166 const std::string& remoteAet,
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167 const std::string& calledAet)
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168 {
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169 static const char* NAME = "IncomingFindRequestFilter";
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170
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171 Json::Value output;
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172
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173 {
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174 LuaScripting::Locker locker(context_.GetLua());
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175
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176 if (!locker.GetLua().IsExistingFunction(NAME))
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177 {
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178 return false;
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179 }
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180
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181 Json::Value tmp = Json::objectValue;
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182 DicomArray a(source);
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183
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184 for (size_t i = 0; i < a.GetSize(); i++)
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185 {
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186 const DicomValue& v = a.GetElement(i).GetValue();
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187 std::string s = (v.IsNull() || v.IsBinary()) ? "" : v.GetContent();
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188 tmp[a.GetElement(i).GetTag().Format()] = s;
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189 }
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diff changeset
190
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diff changeset
191 Json::Value origin = Json::objectValue;
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diff changeset
192 origin["RemoteIp"] = remoteIp;
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193 origin["RemoteAet"] = remoteAet;
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194 origin["CalledAet"] = calledAet;
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195
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196 LuaFunctionCall call(locker.GetLua(), NAME);
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197 call.PushJson(tmp);
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198 call.PushJson(origin);
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199
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diff changeset
200 call.ExecuteToJson(output, true);
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diff changeset
201 }
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diff changeset
202
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diff changeset
203 // The Lua context is released at this point
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diff changeset
204
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diff changeset
205 if (output.type() != Json::objectValue)
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diff changeset
206 {
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diff changeset
207 LOG(ERROR) << "Lua: IncomingFindRequestFilter must return a table";
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diff changeset
208 throw OrthancException(ErrorCode_LuaBadOutput);
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diff changeset
209 }
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diff changeset
210
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parents: 1859
diff changeset
211 Json::Value::Members members = output.getMemberNames();
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diff changeset
212
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parents: 1859
diff changeset
213 for (size_t i = 0; i < members.size(); i++)
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diff changeset
214 {
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parents: 1859
diff changeset
215 if (output[members[i]].type() != Json::stringValue)
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diff changeset
216 {
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diff changeset
217 LOG(ERROR) << "Lua: IncomingFindRequestFilter must return a table mapping names of DICOM tags to strings";
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diff changeset
218 throw OrthancException(ErrorCode_LuaBadOutput);
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diff changeset
219 }
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diff changeset
220
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diff changeset
221 DicomTag tag(FromDcmtkBridge::ParseTag(members[i]));
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diff changeset
222 target.SetValue(tag, output[members[i]].asString());
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diff changeset
223 }
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diff changeset
224
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diff changeset
225 return true;
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diff changeset
226 }
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diff changeset
227
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diff changeset
228
1800
30e97a1f4093 callback for handling worklists with plugins
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diff changeset
229 void OrthancFindRequestHandler::Handle(DicomFindAnswers& answers,
665
41b3e5ccb291 fix for medInria
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diff changeset
230 const DicomMap& input,
1859
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diff changeset
231 const std::list<DicomTag>& sequencesToReturn,
1573
3309878b3e16 more information about the origin of requests submitted to the DICOM handlers
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diff changeset
232 const std::string& remoteIp,
1799
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diff changeset
233 const std::string& remoteAet,
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diff changeset
234 const std::string& calledAet)
565
c931ac02db82 refactoring of find class
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diff changeset
235 {
c931ac02db82 refactoring of find class
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diff changeset
236 /**
1799
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diff changeset
237 * Ensure that the remote modality is known to Orthanc.
665
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diff changeset
238 **/
41b3e5ccb291 fix for medInria
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diff changeset
239
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diff changeset
240 RemoteModalityParameters modality;
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41b3e5ccb291 fix for medInria
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diff changeset
241
1573
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parents: 1486
diff changeset
242 if (!Configuration::LookupDicomModalityUsingAETitle(modality, remoteAet))
1361
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diff changeset
243 {
1582
bd1889029cbb encoding of exceptions
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diff changeset
244 throw OrthancException(ErrorCode_UnknownModality);
1361
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diff changeset
245 }
806
557575fd93e9 refactoring
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parents: 795
diff changeset
246
1382
1cd2e09cb0e5 case insensitive search by default
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diff changeset
247 bool caseSensitivePN = Configuration::GetGlobalBoolParameter("CaseSensitivePN", false);
1374
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diff changeset
248
665
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diff changeset
249
41b3e5ccb291 fix for medInria
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250 /**
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251 * Possibly apply the user-supplied Lua filter.
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252 **/
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253
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254 DicomMap lua;
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255 const DicomMap* filteredInput = &input;
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256
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257 if (ApplyLuaFilter(lua, input, remoteIp, remoteAet, calledAet))
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258 {
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259 filteredInput = &lua;
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260 }
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261
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262
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263 /**
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264 * Retrieve the query level.
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265 **/
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266
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267 assert(filteredInput != NULL);
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268 const DicomValue* levelTmp = filteredInput->TestAndGetValue(DICOM_TAG_QUERY_RETRIEVE_LEVEL);
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269 if (levelTmp == NULL ||
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270 levelTmp->IsNull() ||
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271 levelTmp->IsBinary())
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272 {
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273 LOG(ERROR) << "C-FIND request without the tag 0008,0052 (QueryRetrieveLevel)";
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274 throw OrthancException(ErrorCode_BadRequest);
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275 }
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276
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277 ResourceType level = StringToResourceType(levelTmp->GetContent().c_str());
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278
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279 if (level != ResourceType_Patient &&
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280 level != ResourceType_Study &&
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281 level != ResourceType_Series &&
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282 level != ResourceType_Instance)
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283 {
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284 throw OrthancException(ErrorCode_NotImplemented);
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285 }
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286
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287
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288 DicomArray query(*filteredInput);
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289 LOG(INFO) << "DICOM C-Find request at level: " << EnumerationToString(level);
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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 if (!query.GetElement(i).GetValue().IsNull())
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294 {
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295 LOG(INFO) << " " << query.GetElement(i).GetTag()
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296 << " " << FromDcmtkBridge::GetName(query.GetElement(i).GetTag())
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297 << " = " << query.GetElement(i).GetValue().GetContent();
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298 }
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299 }
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300
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301 for (std::list<DicomTag>::const_iterator it = sequencesToReturn.begin();
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302 it != sequencesToReturn.end(); ++it)
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303 {
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304 LOG(INFO) << " (" << it->Format()
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305 << ") " << FromDcmtkBridge::GetName(*it)
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306 << " : sequence tag whose content will be copied";
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307 }
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308
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309
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310 /**
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311 * Build up the query object.
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312 **/
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313
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314 LookupResource finder(level);
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315
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316 for (size_t i = 0; i < query.GetSize(); i++)
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317 {
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318 const DicomTag tag = query.GetElement(i).GetTag();
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319
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320 if (query.GetElement(i).GetValue().IsNull() ||
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321 tag == DICOM_TAG_QUERY_RETRIEVE_LEVEL ||
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322 tag == DICOM_TAG_SPECIFIC_CHARACTER_SET)
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323 {
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324 continue;
714
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325 }
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326
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327 std::string value = query.GetElement(i).GetValue().GetContent();
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328 if (value.size() == 0)
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329 {
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330 // An empty string corresponds to a "*" wildcard constraint, so we ignore it
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331 continue;
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332 }
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333
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334 if (FilterQueryTag(value, level, tag, modality.GetManufacturer()))
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335 {
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336 ValueRepresentation vr = FromDcmtkBridge::GetValueRepresentation(tag);
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337
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338 // DICOM specifies that searches must be case sensitive, except
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339 // for tags with a PN value representation
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340 bool sensitive = true;
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341 if (vr == ValueRepresentation_PatientName)
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342 {
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343 sensitive = caseSensitivePN;
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344 }
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345
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346 finder.AddDicomConstraint(tag, value, sensitive);
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347 }
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348 else
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349 {
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350 LOG(INFO) << "Because of a patch for the manufacturer of the remote modality, "
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351 << "ignoring constraint on tag (" << tag.Format() << ") " << FromDcmtkBridge::GetName(tag);
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352 }
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353 }
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354
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355
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diff changeset
356 /**
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357 * Run the query.
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358 **/
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359
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360 size_t maxResults = (level == ResourceType_Instance) ? maxInstances_ : maxResults_;
941
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diff changeset
361
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362 std::vector<std::string> resources, instances;
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363 context_.GetIndex().FindCandidates(resources, instances, finder);
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364
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365 assert(resources.size() == instances.size());
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366 bool complete = true;
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367
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368 for (size_t i = 0; i < instances.size(); i++)
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369 {
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370 Json::Value dicom;
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371 context_.ReadJson(dicom, instances[i]);
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372
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373 if (finder.IsMatch(dicom))
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374 {
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375 if (maxResults != 0 &&
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376 answers.GetSize() >= maxResults)
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377 {
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378 complete = false;
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379 break;
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380 }
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381 else
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diff changeset
382 {
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diff changeset
383 AddAnswer(answers, dicom, query, sequencesToReturn);
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384 }
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385 }
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diff changeset
386 }
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387
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388 LOG(INFO) << "Number of matching resources: " << answers.GetSize();
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389
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30e97a1f4093 callback for handling worklists with plugins
Sebastien Jodogne <s.jodogne@gmail.com>
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390 answers.SetComplete(complete);
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Sebastien Jodogne <s.jodogne@gmail.com>
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391 }
c931ac02db82 refactoring of find class
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392 }