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annotate OrthancServer/Sources/Search/DatabaseLookup.cpp @ 4806:753f87dac208

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author Alain Mazy <am@osimis.io>
date Wed, 10 Nov 2021 15:29:35 +0100
parents d9473bd5ed43
children f0038043fb97 7053502fbf97
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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) 2017-2021 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU 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 "../../../OrthancFramework/Sources/DicomParsing/FromDcmtkBridge.h"
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39 #include "../../../OrthancFramework/Sources/DicomParsing/ToDcmtkBridge.h"
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40 #include "../../../OrthancFramework/Sources/OrthancException.h"
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41 #include "../../../OrthancFramework/Sources/Toolbox.h"
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42
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43 #include <boost/lexical_cast.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 DatabaseLookup::~DatabaseLookup()
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49 {
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50 for (size_t i = 0; i < constraints_.size(); i++)
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51 {
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52 assert(constraints_[i] != NULL);
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53 delete constraints_[i];
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54 }
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55 }
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56
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57
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58 const DicomTagConstraint& DatabaseLookup::GetConstraint(size_t index) const
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59 {
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60 if (index >= constraints_.size())
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61 {
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62 throw OrthancException(ErrorCode_ParameterOutOfRange);
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63 }
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64 else
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65 {
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66 assert(constraints_[index] != NULL);
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67 return *constraints_[index];
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68 }
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69 }
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70
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71
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72 void DatabaseLookup::AddConstraintInternal(DicomTagConstraint* constraint)
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73 {
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74 if (constraint == NULL)
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75 {
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76 throw OrthancException(ErrorCode_NullPointer);
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77 }
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78 else
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79 {
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80 constraints_.push_back(constraint);
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81 }
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82 }
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83
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84
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85 bool DatabaseLookup::IsMatch(const DicomMap& value) const
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86 {
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87 for (size_t i = 0; i < constraints_.size(); i++)
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88 {
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89 assert(constraints_[i] != NULL);
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90 if (!constraints_[i]->IsMatch(value))
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91 {
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92 return false;
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93 }
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94 }
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95
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96 return true;
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97 }
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98
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99
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100 bool DatabaseLookup::IsMatch(DcmItem& item,
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101 Encoding encoding,
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102 bool hasCodeExtensions) const
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103 {
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104 for (size_t i = 0; i < constraints_.size(); i++)
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105 {
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106 assert(constraints_[i] != NULL);
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107
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108 const bool isOptionalConstraint = !constraints_[i]->IsMandatory();
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109 const DcmTagKey tag = ToDcmtkBridge::Convert(constraints_[i]->GetTag());
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110
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111 DcmElement* element = NULL;
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112 if (!item.findAndGetElement(tag, element).good())
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113 {
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114 return isOptionalConstraint;
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115 }
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116
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117 if (element == NULL)
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118 {
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119 return false;
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120 }
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121
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122 std::set<DicomTag> ignoreTagLength;
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123 std::unique_ptr<DicomValue> value(FromDcmtkBridge::ConvertLeafElement
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124 (*element, DicomToJsonFlags_None,
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125 0, encoding, hasCodeExtensions, ignoreTagLength));
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126
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127 // WARNING: Also modify "HierarchicalMatcher::Setup()" if modifying this code
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128 if (value.get() == NULL ||
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129 value->IsNull())
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130 {
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131 return isOptionalConstraint;
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132 }
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133 else if (value->IsBinary() ||
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134 !constraints_[i]->IsMatch(value->GetContent()))
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135 {
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136 return false;
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137 }
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138 }
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139
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140 return true;
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141 }
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142
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143
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144 void DatabaseLookup::AddDicomConstraintInternal(const DicomTag& tag,
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145 ValueRepresentation vr,
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146 const std::string& dicomQuery,
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147 bool caseSensitive,
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148 bool mandatoryTag)
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149 {
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150 if ((vr == ValueRepresentation_Date ||
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151 vr == ValueRepresentation_DateTime ||
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152 vr == ValueRepresentation_Time) &&
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153 dicomQuery.find('-') != std::string::npos)
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154 {
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155 /**
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156 * Range matching is only defined for TM, DA and DT value
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157 * representations. This code fixes issues 35 and 37.
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158 *
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159 * Reference: "Range matching is not defined for types of
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160 * Attributes other than dates and times", DICOM PS 3.4,
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161 * C.2.2.2.5 ("Range Matching").
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162 **/
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163 size_t separator = dicomQuery.find('-');
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164 std::string lower = dicomQuery.substr(0, separator);
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165 std::string upper = dicomQuery.substr(separator + 1);
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166
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167 if (!lower.empty())
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168 {
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169 AddConstraintInternal(new DicomTagConstraint
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170 (tag, ConstraintType_GreaterOrEqual, lower, caseSensitive, mandatoryTag));
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171 }
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172
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173 if (!upper.empty())
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174 {
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175 AddConstraintInternal(new DicomTagConstraint
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176 (tag, ConstraintType_SmallerOrEqual, upper, caseSensitive, mandatoryTag));
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177 }
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178 }
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179 else if (dicomQuery.find('\\') != std::string::npos)
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180 {
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181 DicomTag fixedTag(tag);
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182
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183 std::unique_ptr<DicomTagConstraint> constraint
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184 (new DicomTagConstraint(fixedTag, ConstraintType_List, caseSensitive, mandatoryTag));
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185
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186 std::vector<std::string> items;
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187 Toolbox::TokenizeString(items, dicomQuery, '\\');
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188
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189 for (size_t i = 0; i < items.size(); i++)
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190 {
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191 constraint->AddValue(items[i]);
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192 }
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193
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194 AddConstraintInternal(constraint.release());
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195 }
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196 else if (
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197 /**
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198 * New test in Orthanc 1.6.0: Wild card matching is only allowed
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199 * for a subset of value representations: AE, CS, LO, LT, PN,
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200 * SH, ST, UC, UR, UT.
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201 * http://dicom.nema.org/medical/dicom/2019e/output/chtml/part04/sect_C.2.2.2.4.html
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202 **/
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203 (vr == ValueRepresentation_ApplicationEntity || // AE
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204 vr == ValueRepresentation_CodeString || // CS
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205 vr == ValueRepresentation_LongString || // LO
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206 vr == ValueRepresentation_LongText || // LT
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207 vr == ValueRepresentation_PersonName || // PN
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208 vr == ValueRepresentation_ShortString || // SH
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209 vr == ValueRepresentation_ShortText || // ST
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210 vr == ValueRepresentation_UnlimitedCharacters || // UC
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211 vr == ValueRepresentation_UniversalResource || // UR
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212 vr == ValueRepresentation_UnlimitedText // UT
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213 ) &&
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214 (dicomQuery.find('*') != std::string::npos ||
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215 dicomQuery.find('?') != std::string::npos))
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216 {
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217 AddConstraintInternal(new DicomTagConstraint
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218 (tag, ConstraintType_Wildcard, dicomQuery, caseSensitive, mandatoryTag));
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219 }
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220 else
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221 {
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222 AddConstraintInternal(new DicomTagConstraint
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223 (tag, ConstraintType_Equal, dicomQuery, caseSensitive, mandatoryTag));
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224 }
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225 }
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226
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227
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228 void DatabaseLookup::AddDicomConstraint(const DicomTag& tag,
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229 const std::string& dicomQuery,
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230 bool caseSensitivePN,
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231 bool mandatoryTag)
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232 {
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233 ValueRepresentation vr = FromDcmtkBridge::LookupValueRepresentation(tag);
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234
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235 if (vr == ValueRepresentation_Sequence)
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236 {
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237 throw OrthancException(ErrorCode_ParameterOutOfRange);
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238 }
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239
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240 /**
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241 * DICOM specifies that searches must always be case sensitive,
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242 * except for tags with a PN value representation. For PN, Orthanc
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243 * uses the configuration option "CaseSensitivePN" to decide
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244 * whether matching is case-sensitive or case-insensitive.
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245 *
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246 * Reference: DICOM PS 3.4
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247 * - C.2.2.2.1 ("Single Value Matching")
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248 * - C.2.2.2.4 ("Wild Card Matching")
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249 * http://medical.nema.org/Dicom/2011/11_04pu.pdf
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250 *
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251 * "Except for Attributes with a PN Value Representation, only
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252 * entities with values which match exactly the value specified in the
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253 * request shall match. This matching is case-sensitive, i.e.,
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254 * sensitive to the exact encoding of the key attribute value in
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255 * character sets where a letter may have multiple encodings (e.g.,
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256 * based on its case, its position in a word, or whether it is
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257 * accented)
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258 *
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259 * For Attributes with a PN Value Representation (e.g., Patient Name
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260 * (0010,0010)), an application may perform literal matching that is
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261 * either case-sensitive, or that is insensitive to some or all
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262 * aspects of case, position, accent, or other character encoding
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263 * variants."
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264 *
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265 * (0008,0018) UI SOPInstanceUID => Case-sensitive
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266 * (0008,0050) SH AccessionNumber => Case-sensitive
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267 * (0010,0020) LO PatientID => Case-sensitive
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268 * (0020,000D) UI StudyInstanceUID => Case-sensitive
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269 * (0020,000E) UI SeriesInstanceUID => Case-sensitive
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270 **/
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271
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272 if (vr == ValueRepresentation_PersonName)
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273 {
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274 AddDicomConstraintInternal(tag, vr, dicomQuery, caseSensitivePN, mandatoryTag);
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275 }
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276 else
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277 {
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278 AddDicomConstraintInternal(tag, vr, dicomQuery, true /* case sensitive */, mandatoryTag);
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279 }
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280 }
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281
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282
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283 void DatabaseLookup::AddRestConstraint(const DicomTag& tag,
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284 const std::string& dicomQuery,
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285 bool caseSensitive,
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286 bool mandatoryTag)
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287 {
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288 AddDicomConstraintInternal(tag, FromDcmtkBridge::LookupValueRepresentation(tag),
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289 dicomQuery, caseSensitive, mandatoryTag);
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290 }
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291
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292
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293 bool DatabaseLookup::HasOnlyMainDicomTags() const
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294 {
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295 std::set<DicomTag> mainTags;
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296 DicomMap::GetMainDicomTags(mainTags);
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297
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298 for (size_t i = 0; i < constraints_.size(); i++)
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299 {
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300 assert(constraints_[i] != NULL);
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301
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302 if (mainTags.find(constraints_[i]->GetTag()) == mainTags.end())
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303 {
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304 // This is not a main DICOM tag
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305 return false;
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306 }
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307 }
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308
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309 return true;
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310 }
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311
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312
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313 std::string DatabaseLookup::Format() const
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314 {
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315 std::string s;
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316
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317 for (size_t i = 0; i < constraints_.size(); i++)
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318 {
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319 assert(constraints_[i] != NULL);
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320 s += ("Contraint " + boost::lexical_cast<std::string>(i) + ": " +
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321 constraints_[i]->Format() + "\n");
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322 }
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323
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324 return s;
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325 }
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326
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327
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328 bool DatabaseLookup::HasTag(const DicomTag& tag) const
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329 {
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330 for (size_t i = 0; i < constraints_.size(); i++)
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331 {
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332 assert(constraints_[i] != NULL);
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333 if (constraints_[i]->GetTag() == tag)
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334 {
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335 return true;
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336 }
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337 }
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338
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339 return false;
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340 }
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341 }