Mercurial > hg > orthanc

annotate OrthancServer/Search/DatabaseLookup.cpp @ 3694:9107cca846b6

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 25 Feb 2020 22:46:38 +0100
parents 6358923d3ced
children 2a170a8f1faf
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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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5 * Copyright (C) 2017-2020 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 General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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33
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34 #include "../PrecompiledHeadersServer.h"
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35 #include "DatabaseLookup.h"
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36
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37 #include "../ServerToolbox.h"
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38 #include "../../Core/DicomParsing/FromDcmtkBridge.h"
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39 #include "../../Core/DicomParsing/ToDcmtkBridge.h"
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40 #include "../../Core/OrthancException.h"
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41 #include "../../Core/Toolbox.h"
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42
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43 namespace Orthanc
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44 {
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45 DatabaseLookup::~DatabaseLookup()
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46 {
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47 for (size_t i = 0; i < constraints_.size(); i++)
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48 {
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49 assert(constraints_[i] != NULL);
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50 delete constraints_[i];
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51 }
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52 }
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54
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55 const DicomTagConstraint& DatabaseLookup::GetConstraint(size_t index) const
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56 {
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57 if (index >= constraints_.size())
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58 {
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59 throw OrthancException(ErrorCode_ParameterOutOfRange);
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60 }
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61 else
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62 {
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63 assert(constraints_[index] != NULL);
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64 return *constraints_[index];
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65 }
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66 }
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67
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68
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69 void DatabaseLookup::AddConstraint(DicomTagConstraint* constraint)
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70 {
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71 if (constraint == NULL)
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72 {
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73 throw OrthancException(ErrorCode_NullPointer);
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74 }
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75 else
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76 {
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77 constraints_.push_back(constraint);
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78 }
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79 }
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80
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81
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82 bool DatabaseLookup::IsMatch(const DicomMap& value) const
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83 {
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84 for (size_t i = 0; i < constraints_.size(); i++)
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85 {
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86 assert(constraints_[i] != NULL);
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87 if (!constraints_[i]->IsMatch(value))
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88 {
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89 return false;
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90 }
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91 }
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92
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93 return true;
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94 }
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95
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96
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97 bool DatabaseLookup::IsMatch(DcmItem& item,
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98 Encoding encoding,
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99 bool hasCodeExtensions) const
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100 {
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101 for (size_t i = 0; i < constraints_.size(); i++)
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102 {
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103 assert(constraints_[i] != NULL);
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104
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105 const bool isOptionalConstraint = !constraints_[i]->IsMandatory();
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106 const DcmTagKey tag = ToDcmtkBridge::Convert(constraints_[i]->GetTag());
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107
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108 DcmElement* element = NULL;
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109 if (!item.findAndGetElement(tag, element).good())
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110 {
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111 return isOptionalConstraint;
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112 }
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113
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114 if (element == NULL)
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115 {
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116 return false;
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117 }
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118
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119 std::set<DicomTag> ignoreTagLength;
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120 std::auto_ptr<DicomValue> value(FromDcmtkBridge::ConvertLeafElement
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121 (*element, DicomToJsonFlags_None,
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122 0, encoding, hasCodeExtensions, ignoreTagLength));
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123
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124 // WARNING: Also modify "HierarchicalMatcher::Setup()" if modifying this code
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125 if (value.get() == NULL ||
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126 value->IsNull())
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127 {
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128 return isOptionalConstraint;
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129 }
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130 else if (value->IsBinary() ||
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131 !constraints_[i]->IsMatch(value->GetContent()))
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132 {
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133 return false;
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134 }
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135 }
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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
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141 void DatabaseLookup::AddDicomConstraintInternal(const DicomTag& tag,
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142 ValueRepresentation vr,
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143 const std::string& dicomQuery,
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144 bool caseSensitive,
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145 bool mandatoryTag)
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146 {
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147 if ((vr == ValueRepresentation_Date ||
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148 vr == ValueRepresentation_DateTime ||
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149 vr == ValueRepresentation_Time) &&
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150 dicomQuery.find('-') != std::string::npos)
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151 {
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152 /**
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153 * Range matching is only defined for TM, DA and DT value
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154 * representations. This code fixes issues 35 and 37.
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155 *
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156 * Reference: "Range matching is not defined for types of
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157 * Attributes other than dates and times", DICOM PS 3.4,
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158 * C.2.2.2.5 ("Range Matching").
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159 **/
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160 size_t separator = dicomQuery.find('-');
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161 std::string lower = dicomQuery.substr(0, separator);
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162 std::string upper = dicomQuery.substr(separator + 1);
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163
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164 if (!lower.empty())
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165 {
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166 AddConstraint(new DicomTagConstraint
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167 (tag, ConstraintType_GreaterOrEqual, lower, caseSensitive, mandatoryTag));
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168 }
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169
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170 if (!upper.empty())
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171 {
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172 AddConstraint(new DicomTagConstraint
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173 (tag, ConstraintType_SmallerOrEqual, upper, caseSensitive, mandatoryTag));
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174 }
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175 }
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176 else if (tag == DICOM_TAG_MODALITIES_IN_STUDY ||
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177 dicomQuery.find('\\') != std::string::npos)
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178 {
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179 DicomTag fixedTag(tag);
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180
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181 if (tag == DICOM_TAG_MODALITIES_IN_STUDY)
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182 {
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183 // http://www.itk.org/Wiki/DICOM_QueryRetrieve_Explained
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184 // http://dicomiseasy.blogspot.be/2012/01/dicom-queryretrieve-part-i.html
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185 fixedTag = DICOM_TAG_MODALITY;
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186 }
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187
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188 std::auto_ptr<DicomTagConstraint> constraint
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189 (new DicomTagConstraint(fixedTag, ConstraintType_List, caseSensitive, mandatoryTag));
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190
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191 std::vector<std::string> items;
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192 Toolbox::TokenizeString(items, dicomQuery, '\\');
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193
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194 for (size_t i = 0; i < items.size(); i++)
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195 {
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196 constraint->AddValue(items[i]);
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197 }
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198
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199 AddConstraint(constraint.release());
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200 }
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201 else if (
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202 /**
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203 * New test in Orthanc 1.6.0: Wild card matching is only allowed
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204 * for a subset of value representations: AE, CS, LO, LT, PN,
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205 * SH, ST, UC, UR, UT.
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206 * http://dicom.nema.org/medical/dicom/2019e/output/chtml/part04/sect_C.2.2.2.4.html
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207 **/
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208 (vr == ValueRepresentation_ApplicationEntity || // AE
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209 vr == ValueRepresentation_CodeString || // CS
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210 vr == ValueRepresentation_LongString || // LO
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211 vr == ValueRepresentation_LongText || // LT
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212 vr == ValueRepresentation_PersonName || // PN
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213 vr == ValueRepresentation_ShortString || // SH
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214 vr == ValueRepresentation_ShortText || // ST
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215 vr == ValueRepresentation_UnlimitedCharacters || // UC
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216 vr == ValueRepresentation_UniversalResource || // UR
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217 vr == ValueRepresentation_UnlimitedText // UT
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218 ) &&
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219 (dicomQuery.find('*') != std::string::npos ||
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220 dicomQuery.find('?') != std::string::npos))
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221 {
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222 AddConstraint(new DicomTagConstraint
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223 (tag, ConstraintType_Wildcard, dicomQuery, caseSensitive, mandatoryTag));
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224 }
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225 else
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226 {
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227 AddConstraint(new DicomTagConstraint
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228 (tag, ConstraintType_Equal, dicomQuery, caseSensitive, mandatoryTag));
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229 }
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230 }
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231
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232
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233 void DatabaseLookup::AddDicomConstraint(const DicomTag& tag,
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234 const std::string& dicomQuery,
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235 bool caseSensitivePN,
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236 bool mandatoryTag)
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237 {
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238 ValueRepresentation vr = FromDcmtkBridge::LookupValueRepresentation(tag);
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239
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240 if (vr == ValueRepresentation_Sequence)
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241 {
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242 throw OrthancException(ErrorCode_ParameterOutOfRange);
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243 }
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244
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245 /**
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246 * DICOM specifies that searches must always be case sensitive,
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247 * except for tags with a PN value representation. For PN, Orthanc
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248 * uses the configuration option "CaseSensitivePN" to decide
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249 * whether matching is case-sensitive or case-insensitive.
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250 *
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251 * Reference: DICOM PS 3.4
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252 * - C.2.2.2.1 ("Single Value Matching")
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253 * - C.2.2.2.4 ("Wild Card Matching")
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254 * http://medical.nema.org/Dicom/2011/11_04pu.pdf
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255 *
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256 * "Except for Attributes with a PN Value Representation, only
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257 * entities with values which match exactly the value specified in the
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258 * request shall match. This matching is case-sensitive, i.e.,
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259 * sensitive to the exact encoding of the key attribute value in
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260 * character sets where a letter may have multiple encodings (e.g.,
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261 * based on its case, its position in a word, or whether it is
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262 * accented)
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263 *
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264 * For Attributes with a PN Value Representation (e.g., Patient Name
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265 * (0010,0010)), an application may perform literal matching that is
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266 * either case-sensitive, or that is insensitive to some or all
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267 * aspects of case, position, accent, or other character encoding
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268 * variants."
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269 *
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270 * (0008,0018) UI SOPInstanceUID => Case-sensitive
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271 * (0008,0050) SH AccessionNumber => Case-sensitive
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272 * (0010,0020) LO PatientID => Case-sensitive
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273 * (0020,000D) UI StudyInstanceUID => Case-sensitive
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274 * (0020,000E) UI SeriesInstanceUID => Case-sensitive
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275 **/
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276
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277 if (vr == ValueRepresentation_PersonName)
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278 {
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279 AddDicomConstraintInternal(tag, vr, dicomQuery, caseSensitivePN, mandatoryTag);
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280 }
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281 else
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282 {
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283 AddDicomConstraintInternal(tag, vr, dicomQuery, true /* case sensitive */, mandatoryTag);
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284 }
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285 }
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286
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287
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288 void DatabaseLookup::AddRestConstraint(const DicomTag& tag,
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289 const std::string& dicomQuery,
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290 bool caseSensitive,
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291 bool mandatoryTag)
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292 {
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293 AddDicomConstraintInternal(tag, FromDcmtkBridge::LookupValueRepresentation(tag),
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294 dicomQuery, caseSensitive, mandatoryTag);
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295 }
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296
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297
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298 bool DatabaseLookup::HasOnlyMainDicomTags() const
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299 {
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300 std::set<DicomTag> mainTags;
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301 DicomMap::GetMainDicomTags(mainTags);
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302
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303 for (size_t i = 0; i < constraints_.size(); i++)
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304 {
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305 assert(constraints_[i] != NULL);
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306
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307 if (mainTags.find(constraints_[i]->GetTag()) == mainTags.end())
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308 {
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309 // This is not a main DICOM tag
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310 return false;
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311 }
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312 }
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313
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314 return true;
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315 }
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316 }