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1791
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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 #include "../PrecompiledHeadersServer.h"
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34 #include "IFindConstraint.h"
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35
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36 #include "../FromDcmtkBridge.h"
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37 #include "ListConstraint.h"
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38 #include "RangeConstraint.h"
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39 #include "ValueConstraint.h"
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40 #include "WildcardConstraint.h"
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41
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42 namespace Orthanc
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43 {
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44 IFindConstraint* IFindConstraint::ParseDicomConstraint(const DicomTag& tag,
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45 const std::string& dicomQuery,
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46 bool caseSensitive)
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47 {
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48 ValueRepresentation vr = FromDcmtkBridge::GetValueRepresentation(tag);
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49
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50 if ((vr == ValueRepresentation_Date ||
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51 vr == ValueRepresentation_DateTime ||
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52 vr == ValueRepresentation_Time) &&
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53 dicomQuery.find('-') != std::string::npos)
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54 {
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55 /**
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56 * Range matching is only defined for TM, DA and DT value
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57 * representations. This code fixes issues 35 and 37.
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58 *
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59 * Reference: "Range matching is not defined for types of
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60 * Attributes other than dates and times", DICOM PS 3.4,
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61 * C.2.2.2.5 ("Range Matching").
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62 **/
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63 size_t separator = dicomQuery.find('-');
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64 std::string lower = dicomQuery.substr(0, separator);
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65 std::string upper = dicomQuery.substr(separator + 1);
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66 return new RangeConstraint(lower, upper, caseSensitive);
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67 }
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68 else if (dicomQuery.find('\\') != std::string::npos)
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69 {
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70 std::auto_ptr<ListConstraint> constraint(new ListConstraint(caseSensitive));
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71
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72 std::vector<std::string> items;
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73 Toolbox::TokenizeString(items, dicomQuery, '\\');
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74
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75 for (size_t i = 0; i < items.size(); i++)
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76 {
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77 constraint->AddAllowedValue(items[i]);
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78 }
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79
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80 return constraint.release();
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81 }
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82 else if (dicomQuery.find('*') != std::string::npos ||
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83 dicomQuery.find('?') != std::string::npos)
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84 {
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85 return new WildcardConstraint(dicomQuery, caseSensitive);
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86 }
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87 else
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88 {
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89 /**
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90 * Case-insensitive match for PN value representation (Patient
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91 * Name). Case-senstive match for all the other value
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92 * representations.
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93 *
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94 * Reference: DICOM PS 3.4
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95 * - C.2.2.2.1 ("Single Value Matching")
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96 * - C.2.2.2.4 ("Wild Card Matching")
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97 * http://medical.nema.org/Dicom/2011/11_04pu.pdf
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98 *
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99 * "Except for Attributes with a PN Value Representation, only
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100 * entities with values which match exactly the value specified in the
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101 * request shall match. This matching is case-sensitive, i.e.,
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102 * sensitive to the exact encoding of the key attribute value in
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103 * character sets where a letter may have multiple encodings (e.g.,
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104 * based on its case, its position in a word, or whether it is
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105 * accented)
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106 *
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107 * For Attributes with a PN Value Representation (e.g., Patient Name
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108 * (0010,0010)), an application may perform literal matching that is
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109 * either case-sensitive, or that is insensitive to some or all
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110 * aspects of case, position, accent, or other character encoding
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111 * variants."
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112 *
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113 * (0008,0018) UI SOPInstanceUID => Case-sensitive
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114 * (0008,0050) SH AccessionNumber => Case-sensitive
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115 * (0010,0020) LO PatientID => Case-sensitive
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116 * (0020,000D) UI StudyInstanceUID => Case-sensitive
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117 * (0020,000E) UI SeriesInstanceUID => Case-sensitive
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118 **/
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119
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120 return new ValueConstraint(dicomQuery, caseSensitive);
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121 }
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122 }
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123 }
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