Mercurial > hg > orthanc

annotate Plugins/Samples/Common/FullOrthancDataset.cpp @ 2237:403d92d8df83

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 16 Dec 2016 14:45:40 +0100
parents 71b8bec8ca91
children a3a65de1840f
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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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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 "FullOrthancDataset.h"
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34
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35 #include "OrthancPluginException.h"
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36
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37 #include <stdio.h>
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38 #include <cassert>
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39
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40 namespace OrthancPlugins
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41 {
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42 static const Json::Value* AccessTag(const Json::Value& dataset,
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43 const DicomTag& tag)
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44 {
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45 if (dataset.type() != Json::objectValue)
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46 {
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47 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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48 }
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49
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50 char name[16];
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51 sprintf(name, "%04x,%04x", tag.GetGroup(), tag.GetElement());
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52
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53 if (!dataset.isMember(name))
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54 {
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55 return NULL;
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56 }
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57
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58 const Json::Value& value = dataset[name];
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59 if (value.type() != Json::objectValue ||
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60 !value.isMember("Name") ||
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61 !value.isMember("Type") ||
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62 !value.isMember("Value") ||
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63 value["Name"].type() != Json::stringValue ||
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64 value["Type"].type() != Json::stringValue)
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65 {
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66 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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67 }
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68
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69 return &value;
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70 }
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71
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72
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73 static const Json::Value& GetSequenceContent(const Json::Value& sequence)
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74 {
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75 assert(sequence.type() == Json::objectValue);
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76 assert(sequence.isMember("Type"));
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77 assert(sequence.isMember("Value"));
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78
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79 const Json::Value& value = sequence["Value"];
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80
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81 if (sequence["Type"].asString() != "Sequence" ||
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82 value.type() != Json::arrayValue)
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83 {
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84 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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85 }
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86 else
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87 {
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88 return value;
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89 }
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90 }
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91
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92
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93 static bool GetStringInternal(std::string& result,
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94 const Json::Value& tag)
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95 {
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96 assert(tag.type() == Json::objectValue);
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97 assert(tag.isMember("Type"));
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98 assert(tag.isMember("Value"));
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99
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100 const Json::Value& value = tag["Value"];
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101
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102 if (tag["Type"].asString() != "String" ||
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103 value.type() != Json::stringValue)
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104 {
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105 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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106 }
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107 else
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108 {
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109 result = value.asString();
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110 return true;
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111 }
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112 }
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113
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114
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115 const Json::Value* FullOrthancDataset::LookupPath(const DicomPath& path) const
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116 {
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117 const Json::Value* content = &root_;
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118
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119 for (unsigned int depth = 0; depth < path.GetPrefixLength(); depth++)
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120 {
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121 const Json::Value* sequence = AccessTag(*content, path.GetPrefixTag(depth));
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122 if (sequence == NULL)
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123 {
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124 return NULL;
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125 }
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126
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127 const Json::Value& nextContent = GetSequenceContent(*sequence);
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128
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129 size_t index = path.GetPrefixIndex(depth);
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130 if (index >= nextContent.size())
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131 {
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132 return NULL;
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133 }
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134 else
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135 {
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136 content = &nextContent[static_cast<Json::Value::ArrayIndex>(index)];
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137 }
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138 }
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139
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140 return AccessTag(*content, path.GetFinalTag());
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141 }
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142
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143
2180
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144 void FullOrthancDataset::CheckRoot() const
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145 {
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146 if (root_.type() != Json::objectValue)
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147 {
2237
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148 ORTHANC_PLUGINS_THROW_EXCEPTION(BadFileFormat);
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149 }
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150 }
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151
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152
2179
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153 FullOrthancDataset::FullOrthancDataset(IOrthancConnection& orthanc,
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154 const std::string& uri)
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155 {
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156 IOrthancConnection::RestApiGet(root_, orthanc, uri);
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157 CheckRoot();
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158 }
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159
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160
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161 FullOrthancDataset::FullOrthancDataset(const std::string& content)
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162 {
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163 IOrthancConnection::ParseJson(root_, content);
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164 CheckRoot();
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165 }
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166
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167
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168 bool FullOrthancDataset::GetStringValue(std::string& result,
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169 const DicomPath& path) const
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170 {
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171 const Json::Value* value = LookupPath(path);
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172
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173 if (value == NULL)
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174 {
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175 return false;
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176 }
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177 else
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178 {
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179 return GetStringInternal(result, *value);
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180 }
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181 }
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182
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183
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184 bool FullOrthancDataset::GetSequenceSize(size_t& size,
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185 const DicomPath& path) const
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186 {
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187 const Json::Value* sequence = LookupPath(path);
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188
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189 if (sequence == NULL)
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190 {
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191 return false;
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192 }
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193 else
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194 {
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195 size = GetSequenceContent(*sequence).size();
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196 return true;
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197 }
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198 }
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199 }