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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #pragma once
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34
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35 #include "ServerIndex.h"
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36
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37 #include <boost/noncopyable.hpp>
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38
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39 namespace Orthanc
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40 {
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41 class ResourceFinder : public boost::noncopyable
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42 {
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43 public:
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44 class IQuery : public boost::noncopyable
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45 {
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46 public:
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47 virtual ~IQuery()
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48 {
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49 }
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50
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51 virtual ResourceType GetLevel() const = 0;
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52
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53 virtual bool RestrictIdentifier(std::string& value,
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54 DicomTag identifier) const = 0;
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55
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56 virtual bool HasMainDicomTagsFilter(ResourceType level) const = 0;
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57
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58 virtual bool FilterMainDicomTags(const DicomMap& mainTags,
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59 ResourceType level) const = 0;
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60
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61 virtual bool HasInstanceFilter() const = 0;
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62
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63 virtual bool FilterInstance(const std::string& instanceId,
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64 const Json::Value& content) const = 0;
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65 };
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66
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67
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68 private:
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69 typedef std::map<DicomTag, std::string> Identifiers;
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70
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71 class CandidateResources;
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72
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73 ServerContext& context_;
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74 size_t maxResults_;
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75
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76 void ApplyAtLevel(CandidateResources& candidates,
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77 const IQuery& query,
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78 ResourceType level);
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79
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80 public:
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81 ResourceFinder(ServerContext& context);
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82
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83 void SetMaxResults(size_t value)
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84 {
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85 maxResults_ = value;
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86 }
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87
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88 size_t GetMaxResults() const
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89 {
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90 return maxResults_;
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91 }
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92
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93 // Returns "true" iff. all the matching resources have been
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94 // returned. Will be "false" if the results were truncated by
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95 // "SetMaxResults()".
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96 bool Apply(std::list<std::string>& result,
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97 const IQuery& query);
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98 };
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99
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100 }
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