Mercurial > hg > orthanc
annotate OrthancServer/ResourceFinder.cpp @ 1514:d73a2178b319
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 10 Aug 2015 16:43:59 +0200 |
| parents | f967bdf8534e |
| children | a903d57d9f0c |
| rev | line source |
|---|---|
| 1358 | 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 #include "PrecompiledHeadersServer.h" | |
| 1360 | 34 #include "ResourceFinder.h" |
| 1359 | 35 |
|
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36 #include "../Core/Logging.h" |
| 1359 | 37 #include "FromDcmtkBridge.h" |
| 38 #include "ServerContext.h" | |
| 39 | |
| 40 #include <boost/algorithm/string/predicate.hpp> | |
| 1358 | 41 |
| 42 namespace Orthanc | |
| 43 { | |
| 1360 | 44 class ResourceFinder::CandidateResources |
| 1358 | 45 { |
| 1359 | 46 private: |
| 47 typedef std::map<DicomTag, std::string> Query; | |
| 48 | |
| 1360 | 49 ResourceFinder& finder_; |
| 1359 | 50 ServerIndex& index_; |
| 51 ResourceType level_; | |
| 52 bool isFilterApplied_; | |
| 53 std::set<std::string> filtered_; | |
| 54 | |
| 55 | |
| 56 static void ListToSet(std::set<std::string>& target, | |
| 57 const std::list<std::string>& source) | |
| 58 { | |
| 59 for (std::list<std::string>::const_iterator | |
| 60 it = source.begin(); it != source.end(); ++it) | |
| 61 { | |
| 62 target.insert(*it); | |
| 63 } | |
| 64 } | |
| 65 | |
| 66 | |
| 67 public: | |
| 1360 | 68 CandidateResources(ResourceFinder& finder) : |
| 1359 | 69 finder_(finder), |
| 70 index_(finder.context_.GetIndex()), | |
| 71 level_(ResourceType_Patient), | |
| 72 isFilterApplied_(false) | |
| 73 { | |
| 74 } | |
| 75 | |
| 76 ResourceType GetLevel() const | |
| 1358 | 77 { |
| 1359 | 78 return level_; |
| 79 } | |
| 80 | |
| 81 void GoDown() | |
| 82 { | |
| 83 assert(level_ != ResourceType_Instance); | |
| 84 | |
| 85 if (isFilterApplied_) | |
| 86 { | |
| 87 std::set<std::string> tmp = filtered_; | |
| 88 | |
| 89 filtered_.clear(); | |
| 90 | |
| 91 for (std::set<std::string>::const_iterator | |
| 92 it = tmp.begin(); it != tmp.end(); ++it) | |
| 93 { | |
| 94 std::list<std::string> children; | |
| 95 try | |
| 96 { | |
| 97 index_.GetChildren(children, *it); | |
| 98 ListToSet(filtered_, children); | |
| 99 } | |
| 100 catch (OrthancException&) | |
| 101 { | |
| 102 // The resource was removed in the meantime | |
| 103 } | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 switch (level_) | |
| 1358 | 108 { |
| 1359 | 109 case ResourceType_Patient: |
| 110 level_ = ResourceType_Study; | |
| 111 break; | |
| 112 | |
| 113 case ResourceType_Study: | |
| 114 level_ = ResourceType_Series; | |
| 115 break; | |
| 116 | |
| 117 case ResourceType_Series: | |
| 118 level_ = ResourceType_Instance; | |
| 119 break; | |
| 120 | |
| 121 default: | |
| 122 throw OrthancException(ErrorCode_InternalError); | |
| 123 } | |
| 124 } | |
| 125 | |
| 126 | |
| 127 void Flatten(std::list<std::string>& resources) const | |
| 128 { | |
| 129 resources.clear(); | |
| 130 | |
| 131 if (isFilterApplied_) | |
| 132 { | |
| 133 for (std::set<std::string>::const_iterator | |
| 134 it = filtered_.begin(); it != filtered_.end(); ++it) | |
| 135 { | |
| 136 resources.push_back(*it); | |
| 137 } | |
| 138 } | |
| 139 else | |
| 140 { | |
| 141 index_.GetAllUuids(resources, level_); | |
| 142 } | |
| 143 } | |
| 144 | |
| 145 | |
| 1360 | 146 void RestrictIdentifier(const IQuery& query, |
| 147 const DicomTag& tag) | |
| 1359 | 148 { |
| 1360 | 149 assert((level_ == ResourceType_Patient && tag == DICOM_TAG_PATIENT_ID) || |
| 150 (level_ == ResourceType_Study && tag == DICOM_TAG_STUDY_INSTANCE_UID) || | |
| 151 (level_ == ResourceType_Study && tag == DICOM_TAG_ACCESSION_NUMBER) || | |
| 152 (level_ == ResourceType_Series && tag == DICOM_TAG_SERIES_INSTANCE_UID) || | |
| 153 (level_ == ResourceType_Instance && tag == DICOM_TAG_SOP_INSTANCE_UID)); | |
| 154 | |
| 155 std::string value; | |
| 156 if (!query.RestrictIdentifier(value, tag)) | |
| 157 { | |
| 158 return; | |
| 159 } | |
| 160 | |
| 161 LOG(INFO) << "Lookup for identifier tag " | |
| 162 << FromDcmtkBridge::GetName(tag) << " (value: " << value << ")"; | |
| 163 | |
| 164 std::list<std::string> resources; | |
| 165 index_.LookupIdentifier(resources, tag, value, level_); | |
| 166 | |
| 167 if (isFilterApplied_) | |
| 1359 | 168 { |
| 1360 | 169 std::set<std::string> s; |
| 170 ListToSet(s, resources); | |
| 171 | |
| 172 std::set<std::string> tmp = filtered_; | |
| 173 filtered_.clear(); | |
| 174 | |
| 175 for (std::set<std::string>::const_iterator | |
| 176 it = tmp.begin(); it != tmp.end(); ++it) | |
| 177 { | |
| 178 if (s.find(*it) != s.end()) | |
| 179 { | |
| 180 filtered_.insert(*it); | |
| 181 } | |
| 182 } | |
| 183 } | |
| 184 else | |
| 185 { | |
| 186 assert(filtered_.empty()); | |
| 187 isFilterApplied_ = true; | |
| 188 ListToSet(filtered_, resources); | |
| 1359 | 189 } |
| 190 } | |
| 191 | |
| 192 | |
| 1360 | 193 void RestrictMainDicomTags(const IQuery& query) |
| 1359 | 194 { |
| 1360 | 195 if (!query.HasMainDicomTagsFilter(level_)) |
| 1359 | 196 { |
| 197 return; | |
| 1358 | 198 } |
| 199 | |
| 1359 | 200 std::list<std::string> resources; |
| 201 Flatten(resources); | |
| 202 | |
| 203 isFilterApplied_ = true; | |
| 204 filtered_.clear(); | |
| 205 | |
| 206 for (std::list<std::string>::const_iterator | |
| 1384 | 207 it = resources.begin(); it != resources.end(); ++it) |
| 1359 | 208 { |
| 209 DicomMap mainTags; | |
| 210 if (index_.GetMainDicomTags(mainTags, *it, level_)) | |
| 211 { | |
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212 if (query.FilterMainDicomTags(*it, level_, mainTags)) |
| 1359 | 213 { |
| 214 filtered_.insert(*it); | |
| 215 } | |
| 216 } | |
| 217 } | |
| 218 } | |
| 219 }; | |
| 220 | |
| 221 | |
| 1360 | 222 ResourceFinder::ResourceFinder(ServerContext& context) : |
| 1359 | 223 context_(context), |
| 224 maxResults_(0) | |
| 225 { | |
| 226 } | |
| 227 | |
| 228 | |
| 1360 | 229 void ResourceFinder::ApplyAtLevel(CandidateResources& candidates, |
| 230 const IQuery& query, | |
| 231 ResourceType level) | |
| 1359 | 232 { |
| 233 if (level != ResourceType_Patient) | |
| 234 { | |
| 235 candidates.GoDown(); | |
| 236 } | |
| 237 | |
| 1360 | 238 switch (level) |
| 1359 | 239 { |
| 240 case ResourceType_Patient: | |
| 241 { | |
| 1360 | 242 candidates.RestrictIdentifier(query, DICOM_TAG_PATIENT_ID); |
| 1359 | 243 break; |
| 244 } | |
| 245 | |
| 246 case ResourceType_Study: | |
| 247 { | |
| 1360 | 248 candidates.RestrictIdentifier(query, DICOM_TAG_STUDY_INSTANCE_UID); |
| 249 candidates.RestrictIdentifier(query, DICOM_TAG_ACCESSION_NUMBER); | |
| 1359 | 250 break; |
| 251 } | |
| 252 | |
| 253 case ResourceType_Series: | |
| 254 { | |
| 1360 | 255 candidates.RestrictIdentifier(query, DICOM_TAG_SERIES_INSTANCE_UID); |
| 1359 | 256 break; |
| 257 } | |
| 258 | |
| 259 case ResourceType_Instance: | |
| 260 { | |
| 1360 | 261 candidates.RestrictIdentifier(query, DICOM_TAG_SOP_INSTANCE_UID); |
| 1359 | 262 break; |
| 263 } | |
| 264 | |
| 265 default: | |
| 266 throw OrthancException(ErrorCode_InternalError); | |
| 267 } | |
| 268 | |
| 1360 | 269 candidates.RestrictMainDicomTags(query); |
| 1359 | 270 } |
| 271 | |
| 272 | |
| 273 | |
| 274 static bool LookupOneInstance(std::string& result, | |
| 275 ServerIndex& index, | |
| 276 const std::string& id, | |
| 277 ResourceType type) | |
| 278 { | |
| 279 if (type == ResourceType_Instance) | |
| 280 { | |
| 281 result = id; | |
| 282 return true; | |
| 283 } | |
| 284 | |
| 285 std::string childId; | |
| 1358 | 286 |
| 1359 | 287 { |
| 288 std::list<std::string> children; | |
| 289 index.GetChildInstances(children, id); | |
| 290 | |
| 291 if (children.empty()) | |
| 292 { | |
| 293 return false; | |
| 294 } | |
| 295 | |
| 296 childId = children.front(); | |
| 297 } | |
| 298 | |
| 299 return LookupOneInstance(result, index, childId, GetChildResourceType(type)); | |
| 1358 | 300 } |
| 301 | |
| 1359 | 302 |
| 1360 | 303 bool ResourceFinder::Apply(std::list<std::string>& result, |
| 304 const IQuery& query) | |
| 1359 | 305 { |
| 306 CandidateResources candidates(*this); | |
| 307 | |
| 1360 | 308 ApplyAtLevel(candidates, query, ResourceType_Patient); |
| 309 | |
| 310 const ResourceType level = query.GetLevel(); | |
| 1359 | 311 |
| 1360 | 312 if (level == ResourceType_Study || |
| 313 level == ResourceType_Series || | |
| 314 level == ResourceType_Instance) | |
| 1359 | 315 { |
| 1360 | 316 ApplyAtLevel(candidates, query, ResourceType_Study); |
| 1359 | 317 } |
| 318 | |
| 1360 | 319 if (level == ResourceType_Series || |
| 320 level == ResourceType_Instance) | |
| 1359 | 321 { |
| 1360 | 322 ApplyAtLevel(candidates, query, ResourceType_Series); |
| 1359 | 323 } |
| 324 | |
| 1360 | 325 if (level == ResourceType_Instance) |
| 1359 | 326 { |
| 1360 | 327 ApplyAtLevel(candidates, query, ResourceType_Instance); |
| 1359 | 328 } |
| 329 | |
| 1360 | 330 if (!query.HasInstanceFilter()) |
| 1359 | 331 { |
| 332 candidates.Flatten(result); | |
| 333 | |
| 334 if (maxResults_ != 0 && | |
| 335 result.size() >= maxResults_) | |
| 336 { | |
| 337 result.resize(maxResults_); | |
| 338 return false; | |
| 339 } | |
| 340 else | |
| 341 { | |
| 342 return true; | |
| 343 } | |
| 344 } | |
| 345 else | |
| 346 { | |
| 347 std::list<std::string> tmp; | |
| 348 candidates.Flatten(tmp); | |
| 349 | |
| 350 result.clear(); | |
| 351 for (std::list<std::string>::const_iterator | |
| 352 resource = tmp.begin(); resource != tmp.end(); ++resource) | |
| 353 { | |
| 354 try | |
| 355 { | |
| 356 std::string instance; | |
| 1360 | 357 if (LookupOneInstance(instance, context_.GetIndex(), *resource, level)) |
| 1359 | 358 { |
| 359 Json::Value content; | |
| 360 context_.ReadJson(content, instance); | |
| 1360 | 361 if (query.FilterInstance(*resource, content)) |
| 1359 | 362 { |
| 363 result.push_back(*resource); | |
| 364 | |
| 365 if (maxResults_ != 0 && | |
| 366 result.size() >= maxResults_) | |
| 367 { | |
| 368 // Too many results, stop before recording this new match | |
| 369 return false; | |
| 370 } | |
| 371 } | |
| 372 } | |
| 373 } | |
| 374 catch (OrthancException&) | |
| 375 { | |
| 376 // This resource has been deleted since the search was started | |
| 377 } | |
| 378 } | |
| 379 } | |
| 380 | |
| 381 return true; // All the matching resources have been returned | |
| 382 } | |
| 1358 | 383 } |