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annotate OrthancServer/Search/HierarchicalMatcher.cpp @ 3072:1b05fd072c57 db-changes

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 02 Jan 2019 11:47:58 +0100
parents 2df061cf2fec
children cf8cbeb35f33
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
1900
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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) 2017-2019 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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32
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33
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34 #include "../PrecompiledHeadersServer.h"
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35 #include "HierarchicalMatcher.h"
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36
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37 #include "../../Core/Logging.h"
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38 #include "../../Core/OrthancException.h"
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39 #include "../../Core/DicomParsing/FromDcmtkBridge.h"
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40 #include "../../Core/DicomParsing/ToDcmtkBridge.h"
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41 #include "../OrthancConfiguration.h"
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42
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43 #include <dcmtk/dcmdata/dcfilefo.h>
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44
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45 namespace Orthanc
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46 {
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47 HierarchicalMatcher::HierarchicalMatcher(ParsedDicomFile& query)
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48 {
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49 bool caseSensitivePN;
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50
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51 {
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52 OrthancConfiguration::ReaderLock lock;
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53 caseSensitivePN = lock.GetConfiguration().GetBooleanParameter("CaseSensitivePN", false);
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54 }
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55
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56 Setup(*query.GetDcmtkObject().getDataset(), caseSensitivePN, query.GetEncoding());
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57 }
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58
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59
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60 HierarchicalMatcher::~HierarchicalMatcher()
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61 {
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62 for (Sequences::iterator it = sequences_.begin();
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63 it != sequences_.end(); ++it)
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64 {
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65 if (it->second != NULL)
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66 {
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67 delete it->second;
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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
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73 void HierarchicalMatcher::Setup(DcmItem& dataset,
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74 bool caseSensitivePN,
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75 Encoding encoding)
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76 {
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77 for (unsigned long i = 0; i < dataset.card(); i++)
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78 {
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79 DcmElement* element = dataset.getElement(i);
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80 if (element == NULL)
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81 {
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82 throw OrthancException(ErrorCode_InternalError);
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83 }
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84
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85 DicomTag tag(FromDcmtkBridge::Convert(element->getTag()));
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86 if (tag == DICOM_TAG_SPECIFIC_CHARACTER_SET || // Ignore encoding
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87 tag.GetElement() == 0x0000) // Ignore all "Group Length" tags
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88 {
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89 continue;
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90 }
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91
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92 if (flatTags_.find(tag) != flatTags_.end() ||
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93 sequences_.find(tag) != sequences_.end())
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94 {
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95 // A constraint already exists on this tag
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96 throw OrthancException(ErrorCode_BadRequest);
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97 }
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98
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99 if (FromDcmtkBridge::LookupValueRepresentation(tag) == ValueRepresentation_Sequence)
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100 {
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101 DcmSequenceOfItems& sequence = dynamic_cast<DcmSequenceOfItems&>(*element);
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102
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103 if (sequence.card() == 0 ||
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104 (sequence.card() == 1 && sequence.getItem(0)->card() == 0))
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105 {
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106 // Universal matching of a sequence
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107 sequences_[tag] = NULL;
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108 }
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109 else if (sequence.card() == 1)
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110 {
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111 sequences_[tag] = new HierarchicalMatcher(*sequence.getItem(0), caseSensitivePN, encoding);
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112 }
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113 else
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114 {
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115 throw OrthancException(ErrorCode_BadRequest);
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116 }
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117 }
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118 else
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119 {
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120 flatTags_.insert(tag);
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121
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122 std::set<DicomTag> ignoreTagLength;
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123 std::auto_ptr<DicomValue> value(FromDcmtkBridge::ConvertLeafElement
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124 (*element, DicomToJsonFlags_None,
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125 0, encoding, ignoreTagLength));
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126
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127 // WARNING: Also modify "DatabaseLookup::IsMatch()" 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 // This is an universal constraint
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132 }
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133 else if (value->IsBinary())
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134 {
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135 if (!value->GetContent().empty())
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136 {
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137 LOG(WARNING) << "This C-Find modality worklist query contains a non-empty tag ("
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138 << tag.Format() << ") with UN (unknown) value representation. "
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139 << "It will be ignored.";
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140 }
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141 }
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142 else if (value->GetContent().empty())
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143 {
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144 // This is an universal matcher
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145 }
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146 else
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147 {
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148 flatConstraints_.AddDicomConstraint
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149 (tag, value->GetContent(), caseSensitivePN, true /* mandatory */);
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150 }
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151 }
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152 }
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153 }
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154
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155
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156 std::string HierarchicalMatcher::Format(const std::string& prefix) const
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157 {
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158 std::string s;
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159
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160 std::set<DicomTag> tags;
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161 for (size_t i = 0; i < flatConstraints_.GetConstraintsCount(); i++)
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162 {
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163 const DicomTagConstraint& c = flatConstraints_.GetConstraint(i);
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164
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165 s += c.Format() + "\n";
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166 tags.insert(c.GetTag());
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167 }
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168
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169 // Loop over the universal constraints
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170 for (std::set<DicomTag>::const_iterator it = flatTags_.begin();
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171 it != flatTags_.end(); ++it)
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172 {
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173 if (tags.find(*it) == tags.end())
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174 {
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175 s += prefix + it->Format() + " == *\n";
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176 }
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177 }
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178
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179 for (Sequences::const_iterator it = sequences_.begin();
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180 it != sequences_.end(); ++it)
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181 {
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182 s += prefix + it->first.Format() + " ";
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183
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184 if (it->second == NULL)
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185 {
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186 s += "*\n";
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187 }
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188 else
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189 {
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190 s += "Sequence:\n" + it->second->Format(prefix + " ");
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191 }
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192 }
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193
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194 return s;
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195 }
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196
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197
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198 bool HierarchicalMatcher::Match(ParsedDicomFile& dicom) const
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199 {
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200 return MatchInternal(*dicom.GetDcmtkObject().getDataset(),
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201 dicom.GetEncoding());
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202 }
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203
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204
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205 bool HierarchicalMatcher::MatchInternal(DcmItem& item,
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206 Encoding encoding) const
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207 {
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208 if (!flatConstraints_.IsMatch(item, encoding))
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209 {
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210 return false;
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211 }
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212
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213 for (Sequences::const_iterator it = sequences_.begin();
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214 it != sequences_.end(); ++it)
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215 {
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216 if (it->second != NULL)
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217 {
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218 DcmTagKey tag = ToDcmtkBridge::Convert(it->first);
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219
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220 DcmSequenceOfItems* sequence = NULL;
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221 if (!item.findAndGetSequence(tag, sequence).good() ||
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222 sequence == NULL)
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223 {
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224 continue;
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225 }
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226
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227 bool match = false;
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228
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229 for (unsigned long i = 0; i < sequence->card(); i++)
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230 {
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231 if (it->second->MatchInternal(*sequence->getItem(i), encoding))
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232 {
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233 match = true;
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234 break;
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235 }
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236 }
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237
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238 if (!match)
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239 {
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240 return false;
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241 }
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242 }
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243 }
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244
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245 return true;
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246 }
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247
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248
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249 DcmDataset* HierarchicalMatcher::ExtractInternal(DcmItem& source,
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250 Encoding encoding) const
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251 {
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252 std::auto_ptr<DcmDataset> target(new DcmDataset);
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253
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254 for (std::set<DicomTag>::const_iterator it = flatTags_.begin();
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255 it != flatTags_.end(); ++it)
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256 {
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257 DcmTagKey tag = ToDcmtkBridge::Convert(*it);
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258
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259 DcmElement* element = NULL;
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260 if (source.findAndGetElement(tag, element).good() &&
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261 element != NULL)
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262 {
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263 std::auto_ptr<DcmElement> cloned(FromDcmtkBridge::CreateElementForTag(*it));
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264 cloned->copyFrom(*element);
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265 target->insert(cloned.release());
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266 }
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267 }
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268
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269 for (Sequences::const_iterator it = sequences_.begin();
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270 it != sequences_.end(); ++it)
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271 {
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272 DcmTagKey tag = ToDcmtkBridge::Convert(it->first);
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273
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274 DcmSequenceOfItems* sequence = NULL;
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275 if (source.findAndGetSequence(tag, sequence).good() &&
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276 sequence != NULL)
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277 {
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278 std::auto_ptr<DcmSequenceOfItems> cloned(new DcmSequenceOfItems(tag));
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279
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280 for (unsigned long i = 0; i < sequence->card(); i++)
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281 {
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282 if (it->second == NULL)
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283 {
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284 cloned->append(new DcmItem(*sequence->getItem(i)));
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285 }
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286 else if (it->second->MatchInternal(*sequence->getItem(i), encoding)) // TODO Might be optimized
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287 {
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288 // It is necessary to encapsulate the child dataset into a
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289 // "DcmItem" object before it can be included in a
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290 // sequence. Otherwise, "dciodvfy" reports an error "Bad
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291 // tag in sequence - Expecting Item or Sequence Delimiter."
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292 std::auto_ptr<DcmDataset> child(it->second->ExtractInternal(*sequence->getItem(i), encoding));
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293 cloned->append(new DcmItem(*child));
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294 }
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295 }
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296
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297 target->insert(cloned.release());
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298 }
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299 }
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300
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301 return target.release();
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302 }
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303
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304
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305 ParsedDicomFile* HierarchicalMatcher::Extract(ParsedDicomFile& dicom) const
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306 {
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307 std::auto_ptr<DcmDataset> dataset(ExtractInternal(*dicom.GetDcmtkObject().getDataset(),
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308 dicom.GetEncoding()));
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309
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310 std::auto_ptr<ParsedDicomFile> result(new ParsedDicomFile(*dataset));
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311 result->SetEncoding(dicom.GetEncoding());
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312
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313 return result.release();
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314 }
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315 }