Mercurial > hg > orthanc
annotate OrthancServer/DicomFindQuery.cpp @ 1400:1c8df4424437
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 01 Jun 2015 14:05:35 +0200 |
| parents | d6971e18a324 |
| children | 8e23f16a198d |
| rev | line source |
|---|---|
| 1360 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
| 33 | |
| 34 #include "PrecompiledHeadersServer.h" | |
| 35 #include "DicomFindQuery.h" | |
| 36 | |
| 37 #include "FromDcmtkBridge.h" | |
| 38 | |
| 39 #include <boost/regex.hpp> | |
| 40 | |
| 41 | |
| 42 namespace Orthanc | |
| 43 { | |
| 44 class DicomFindQuery::ValueConstraint : public DicomFindQuery::IConstraint | |
| 45 { | |
| 46 private: | |
| 47 bool isCaseSensitive_; | |
| 48 std::string expected_; | |
| 49 | |
| 50 public: | |
| 51 ValueConstraint(const std::string& value, | |
| 52 bool caseSensitive) : | |
| 53 isCaseSensitive_(caseSensitive), | |
| 54 expected_(value) | |
| 55 { | |
| 56 } | |
| 57 | |
| 58 const std::string& GetValue() const | |
| 59 { | |
| 60 return expected_; | |
| 61 } | |
| 62 | |
| 63 virtual bool IsExactConstraint() const | |
| 64 { | |
| 65 return isCaseSensitive_; | |
| 66 } | |
| 67 | |
| 68 virtual bool Apply(const std::string& value) const | |
| 69 { | |
| 70 if (isCaseSensitive_) | |
| 71 { | |
| 72 return expected_ == value; | |
| 73 } | |
| 74 else | |
| 75 { | |
| 76 std::string v, c; | |
| 77 Toolbox::ToLowerCase(v, value); | |
| 78 Toolbox::ToLowerCase(c, expected_); | |
| 79 return v == c; | |
| 80 } | |
| 81 } | |
| 82 }; | |
| 83 | |
| 84 | |
| 85 class DicomFindQuery::ListConstraint : public DicomFindQuery::IConstraint | |
| 86 { | |
| 87 private: | |
| 88 std::set<std::string> values_; | |
| 89 | |
| 90 public: | |
| 91 ListConstraint(const std::string& values) | |
| 92 { | |
| 93 std::vector<std::string> items; | |
| 94 Toolbox::TokenizeString(items, values, '\\'); | |
| 95 | |
| 96 for (size_t i = 0; i < items.size(); i++) | |
| 97 { | |
| 98 std::string lower; | |
| 99 Toolbox::ToLowerCase(lower, items[i]); | |
| 100 values_.insert(lower); | |
| 101 } | |
| 102 } | |
| 103 | |
| 104 virtual bool Apply(const std::string& value) const | |
| 105 { | |
| 106 std::string tmp; | |
| 107 Toolbox::ToLowerCase(tmp, value); | |
| 108 return values_.find(tmp) != values_.end(); | |
| 109 } | |
| 110 }; | |
| 111 | |
| 112 | |
| 113 class DicomFindQuery::RangeConstraint : public DicomFindQuery::IConstraint | |
| 114 { | |
| 115 private: | |
| 116 std::string lower_; | |
| 117 std::string upper_; | |
| 118 | |
| 119 public: | |
| 120 RangeConstraint(const std::string& range) | |
| 121 { | |
| 122 size_t separator = range.find('-'); | |
| 123 Toolbox::ToLowerCase(lower_, range.substr(0, separator)); | |
| 124 Toolbox::ToLowerCase(upper_, range.substr(separator + 1)); | |
| 125 } | |
| 126 | |
| 127 virtual bool Apply(const std::string& value) const | |
| 128 { | |
| 129 std::string v; | |
| 130 Toolbox::ToLowerCase(v, value); | |
| 131 | |
| 132 if (lower_.size() == 0 && | |
| 133 upper_.size() == 0) | |
| 134 { | |
| 135 return false; | |
| 136 } | |
| 137 | |
| 138 if (lower_.size() == 0) | |
| 139 { | |
| 140 return v <= upper_; | |
| 141 } | |
| 142 | |
| 143 if (upper_.size() == 0) | |
| 144 { | |
| 145 return v >= lower_; | |
| 146 } | |
| 147 | |
| 148 return (v >= lower_ && v <= upper_); | |
| 149 } | |
| 150 }; | |
| 151 | |
| 152 | |
| 153 class DicomFindQuery::WildcardConstraint : public DicomFindQuery::IConstraint | |
| 154 { | |
| 155 private: | |
| 156 boost::regex pattern_; | |
| 157 | |
| 158 public: | |
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159 WildcardConstraint(const std::string& wildcard, |
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160 bool caseSensitive) |
| 1360 | 161 { |
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162 std::string re = Toolbox::WildcardToRegularExpression(wildcard); |
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163 |
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164 if (caseSensitive) |
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165 { |
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166 pattern_ = boost::regex(re); |
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167 } |
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168 else |
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169 { |
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170 pattern_ = boost::regex(re, boost::regex::icase /* case insensitive search */); |
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171 } |
| 1360 | 172 } |
| 173 | |
| 174 virtual bool Apply(const std::string& value) const | |
| 175 { | |
| 176 return boost::regex_match(value, pattern_); | |
| 177 } | |
| 178 }; | |
| 179 | |
| 180 | |
| 181 void DicomFindQuery::PrepareMainDicomTags(ResourceType level) | |
| 182 { | |
| 183 std::set<DicomTag> tags; | |
| 184 DicomMap::GetMainDicomTags(tags, level); | |
| 185 | |
| 186 for (std::set<DicomTag>::const_iterator | |
| 187 it = tags.begin(); it != tags.end(); ++it) | |
| 188 { | |
| 189 mainDicomTags_[*it] = level; | |
| 190 } | |
| 191 } | |
| 192 | |
| 193 | |
| 194 DicomFindQuery::DicomFindQuery() : | |
| 195 level_(ResourceType_Patient), | |
| 196 filterJson_(false) | |
| 197 { | |
| 198 PrepareMainDicomTags(ResourceType_Patient); | |
| 199 PrepareMainDicomTags(ResourceType_Study); | |
| 200 PrepareMainDicomTags(ResourceType_Series); | |
| 201 PrepareMainDicomTags(ResourceType_Instance); | |
| 202 } | |
| 203 | |
| 204 | |
| 205 DicomFindQuery::~DicomFindQuery() | |
| 206 { | |
| 207 for (Constraints::iterator it = constraints_.begin(); | |
| 1384 | 208 it != constraints_.end(); ++it) |
| 1360 | 209 { |
| 210 delete it->second; | |
| 211 } | |
| 212 } | |
| 213 | |
| 214 | |
| 215 | |
| 216 | |
| 217 void DicomFindQuery::AssignConstraint(const DicomTag& tag, | |
| 218 IConstraint* constraint) | |
| 219 { | |
| 220 Constraints::iterator it = constraints_.find(tag); | |
| 221 | |
| 222 if (it != constraints_.end()) | |
| 223 { | |
| 224 constraints_.erase(it); | |
| 225 } | |
| 226 | |
| 227 constraints_[tag] = constraint; | |
| 228 | |
| 229 MainDicomTags::const_iterator tmp = mainDicomTags_.find(tag); | |
| 230 if (tmp == mainDicomTags_.end()) | |
| 231 { | |
| 232 // The query depends upon a DICOM tag that is not a main tag | |
| 233 // from the point of view of Orthanc, we need to decode the | |
| 234 // JSON file on the disk. | |
| 235 filterJson_ = true; | |
| 236 } | |
| 237 else | |
| 238 { | |
| 239 filteredLevels_.insert(tmp->second); | |
| 240 } | |
| 241 } | |
| 242 | |
| 243 | |
| 244 void DicomFindQuery::SetConstraint(const DicomTag& tag, | |
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245 const std::string& constraint, |
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246 bool caseSensitivePN) |
| 1360 | 247 { |
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248 bool sensitive = (FromDcmtkBridge::IsPNValueRepresentation(tag) ? caseSensitivePN : true); |
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249 |
| 1360 | 250 // http://www.itk.org/Wiki/DICOM_QueryRetrieve_Explained |
| 251 // http://dicomiseasy.blogspot.be/2012/01/dicom-queryretrieve-part-i.html | |
| 252 | |
| 253 if (constraint.find('-') != std::string::npos) | |
| 254 { | |
| 255 AssignConstraint(tag, new RangeConstraint(constraint)); | |
| 256 } | |
| 257 else if (constraint.find('\\') != std::string::npos) | |
| 258 { | |
| 259 AssignConstraint(tag, new ListConstraint(constraint)); | |
| 260 } | |
| 261 else if (constraint.find('*') != std::string::npos || | |
| 262 constraint.find('?') != std::string::npos) | |
| 263 { | |
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264 AssignConstraint(tag, new WildcardConstraint(constraint, sensitive)); |
| 1360 | 265 } |
| 266 else | |
| 267 { | |
| 268 /** | |
| 269 * Case-insensitive match for PN value representation (Patient | |
| 270 * Name). Case-senstive match for all the other value | |
| 271 * representations. | |
| 272 * | |
| 273 * Reference: DICOM PS 3.4 | |
| 274 * - C.2.2.2.1 ("Single Value Matching") | |
| 275 * - C.2.2.2.4 ("Wild Card Matching") | |
| 276 * http://medical.nema.org/Dicom/2011/11_04pu.pdf | |
| 277 * | |
| 278 * "Except for Attributes with a PN Value Representation, only | |
| 279 * entities with values which match exactly the value specified in the | |
| 280 * request shall match. This matching is case-sensitive, i.e., | |
| 281 * sensitive to the exact encoding of the key attribute value in | |
| 282 * character sets where a letter may have multiple encodings (e.g., | |
| 283 * based on its case, its position in a word, or whether it is | |
| 284 * accented) | |
| 285 * | |
| 286 * For Attributes with a PN Value Representation (e.g., Patient Name | |
| 287 * (0010,0010)), an application may perform literal matching that is | |
| 288 * either case-sensitive, or that is insensitive to some or all | |
| 289 * aspects of case, position, accent, or other character encoding | |
| 290 * variants." | |
| 291 * | |
| 292 * (0008,0018) UI SOPInstanceUID => Case-sensitive | |
| 293 * (0008,0050) SH AccessionNumber => Case-sensitive | |
| 294 * (0010,0020) LO PatientID => Case-sensitive | |
| 295 * (0020,000D) UI StudyInstanceUID => Case-sensitive | |
| 296 * (0020,000E) UI SeriesInstanceUID => Case-sensitive | |
| 297 **/ | |
| 298 | |
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299 AssignConstraint(tag, new ValueConstraint(constraint, sensitive)); |
| 1360 | 300 } |
| 301 } | |
| 302 | |
| 303 | |
| 304 bool DicomFindQuery::RestrictIdentifier(std::string& value, | |
| 305 DicomTag identifier) const | |
| 306 { | |
| 307 Constraints::const_iterator it = constraints_.find(identifier); | |
| 308 if (it == constraints_.end() || | |
| 309 !it->second->IsExactConstraint()) | |
| 310 { | |
| 311 return false; | |
| 312 } | |
| 313 else | |
| 314 { | |
| 315 value = dynamic_cast<ValueConstraint*>(it->second)->GetValue(); | |
| 316 return true; | |
| 317 } | |
| 318 } | |
| 319 | |
| 320 bool DicomFindQuery::HasMainDicomTagsFilter(ResourceType level) const | |
| 321 { | |
| 322 return filteredLevels_.find(level) != filteredLevels_.end(); | |
| 323 } | |
| 324 | |
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325 bool DicomFindQuery::FilterMainDicomTags(const std::string& resourceId, |
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326 ResourceType level, |
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327 const DicomMap& mainTags) const |
| 1360 | 328 { |
| 329 std::set<DicomTag> tags; | |
| 330 mainTags.GetTags(tags); | |
| 331 | |
| 332 for (std::set<DicomTag>::const_iterator | |
| 333 it = tags.begin(); it != tags.end(); ++it) | |
| 334 { | |
| 335 Constraints::const_iterator constraint = constraints_.find(*it); | |
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336 if (constraint != constraints_.end() && |
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337 !constraint->second->Apply(mainTags.GetValue(*it).AsString())) |
| 1360 | 338 { |
| 339 return false; | |
| 340 } | |
| 341 } | |
| 342 | |
| 343 return true; | |
| 344 } | |
| 345 | |
| 346 bool DicomFindQuery::HasInstanceFilter() const | |
| 347 { | |
| 348 return filterJson_; | |
| 349 } | |
| 350 | |
| 351 bool DicomFindQuery::FilterInstance(const std::string& instanceId, | |
| 352 const Json::Value& content) const | |
| 353 { | |
| 354 for (Constraints::const_iterator it = constraints_.begin(); | |
| 355 it != constraints_.end(); ++it) | |
| 356 { | |
| 357 std::string tag = it->first.Format(); | |
| 358 std::string value; | |
| 359 if (content.isMember(tag)) | |
| 360 { | |
| 361 value = content.get(tag, Json::arrayValue).get("Value", "").asString(); | |
| 362 } | |
| 363 | |
| 364 if (!it->second->Apply(value)) | |
| 365 { | |
| 366 return false; | |
| 367 } | |
| 368 } | |
| 369 | |
| 370 return true; | |
| 371 } | |
| 372 } |