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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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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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67
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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0
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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 Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "ResultBase.h"
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23
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24 #include "../Common/BinaryStringValue.h"
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25 #include "../Common/Integer64Value.h"
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26 #include "../Common/NullValue.h"
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27 #include "../Common/Utf8StringValue.h"
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28
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29 #include <Core/Logging.h>
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30 #include <Core/OrthancException.h>
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31
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32 #include <cassert>
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33 #include <memory>
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34
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35 namespace OrthancDatabases
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36 {
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37 void ResultBase::ClearFields()
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38 {
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39 for (size_t i = 0; i < fields_.size(); i++)
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40 {
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41 if (fields_[i] != NULL)
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42 {
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43 delete fields_[i];
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44 fields_[i] = NULL;
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45 }
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46 }
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47 }
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48
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49
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50 void ResultBase::ConvertFields()
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51 {
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52 assert(expectedType_.size() == fields_.size() &&
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53 hasExpectedType_.size() == fields_.size());
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54
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55 for (size_t i = 0; i < fields_.size(); i++)
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56 {
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57 if (fields_[i] == NULL)
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58 {
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59 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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60 }
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61
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62 ValueType sourceType = fields_[i]->GetType();
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63 ValueType targetType = expectedType_[i];
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64
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65 if (hasExpectedType_[i] &&
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66 sourceType != ValueType_Null &&
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67 sourceType != targetType)
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68 {
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69 std::auto_ptr<IValue> converted(fields_[i]->Convert(targetType));
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70
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71 if (converted.get() == NULL)
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72 {
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73 LOG(ERROR) << "Cannot convert between data types from a database";
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74 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType);
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75 }
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76 else
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77 {
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78 assert(fields_[i] != NULL);
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79 delete fields_[i];
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80 fields_[i] = converted.release();
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81 }
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82 }
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83 }
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84 }
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85
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86
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87 void ResultBase::FetchFields()
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88 {
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89 ClearFields();
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90
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91 if (!IsDone())
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92 {
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93 for (size_t i = 0; i < fields_.size(); i++)
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94 {
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95 fields_[i] = FetchField(i);
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96
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97 if (fields_[i] == NULL)
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98 {
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99 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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100 }
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101 }
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102
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103 ConvertFields();
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104 }
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105 }
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106
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107
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108 void ResultBase::SetFieldsCount(size_t count)
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109 {
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110 if (!fields_.empty())
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111 {
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112 // This method can only be invoked once
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113 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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114 }
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115
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116 fields_.resize(count);
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117 expectedType_.resize(count, ValueType_Null);
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118 hasExpectedType_.resize(count, false);
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119 }
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120
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121
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122 void ResultBase::SetExpectedType(size_t field,
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123 ValueType type)
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124 {
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125 assert(expectedType_.size() == fields_.size() &&
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126 hasExpectedType_.size() == fields_.size());
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127
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128 if (field < fields_.size())
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129 {
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130 expectedType_[field] = type;
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131 hasExpectedType_[field] = true;
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132
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133 if (!IsDone())
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134 {
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135 ConvertFields();
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136 }
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137 }
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138 }
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139
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140
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141 const IValue& ResultBase::GetField(size_t index) const
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142 {
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143 if (IsDone())
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144 {
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145 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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146 }
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147 else if (index >= fields_.size())
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148 {
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149 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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150 }
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151 else if (fields_[index] == NULL)
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152 {
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153 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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154 }
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155 else
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156 {
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157 return *fields_[index];
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158 }
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159 }
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160 }
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