Mercurial > hg > orthanc-databases
annotate Framework/Plugins/StorageBackend.cpp @ 246:483af3f35a4b
turning ResultFileValue into a base class, and implement its primitives for PostgreSQL
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 14 Apr 2021 08:42:31 +0200 |
parents | 9d00e5e073e8 |
children | 7f5ee2b42a86 |
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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 |
193
3236894320d6
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5 * Copyright (C) 2017-2021 Osimis S.A., Belgium |
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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 "StorageBackend.h" |
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23 |
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24 #if HAS_ORTHANC_EXCEPTION != 1 |
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25 # error HAS_ORTHANC_EXCEPTION must be set to 1 |
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26 #endif |
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27 |
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28 #include "../../Framework/Common/BinaryStringValue.h" |
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29 #include "../../Framework/Common/ResultFileValue.h" |
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30 |
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31 #include <Compatibility.h> // For std::unique_ptr<> |
152 | 32 #include <OrthancException.h> |
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33 |
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34 #include <cassert> |
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35 #include <limits> |
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36 |
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37 |
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38 #define ORTHANC_PLUGINS_DATABASE_CATCH \ |
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39 catch (::Orthanc::OrthancException& e) \ |
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40 { \ |
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41 return static_cast<OrthancPluginErrorCode>(e.GetErrorCode()); \ |
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42 } \ |
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43 catch (::std::runtime_error& e) \ |
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44 { \ |
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45 std::string s = "Exception in storage area back-end: " + std::string(e.what()); \ |
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46 OrthancPluginLogError(context_, s.c_str()); \ |
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47 return OrthancPluginErrorCode_DatabasePlugin; \ |
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48 } \ |
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49 catch (...) \ |
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50 { \ |
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51 OrthancPluginLogError(context_, "Native exception"); \ |
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52 return OrthancPluginErrorCode_DatabasePlugin; \ |
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53 } |
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54 |
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55 |
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56 namespace OrthancDatabases |
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57 { |
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58 void StorageBackend::SetDatabase(IDatabase* database) |
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59 { |
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60 if (database == NULL) |
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61 { |
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62 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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63 } |
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64 else if (manager_.get() != NULL) |
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65 { |
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66 delete database; |
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67 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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68 } |
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69 else |
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70 { |
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71 manager_.reset(new DatabaseManager(database)); |
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72 } |
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73 } |
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74 |
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75 DatabaseManager& StorageBackend::GetManager() |
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76 { |
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77 if (manager_.get() == NULL) |
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78 { |
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79 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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80 } |
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81 else |
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82 { |
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83 return *manager_; |
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84 } |
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85 } |
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86 |
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87 |
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88 void StorageBackend::AccessorBase::Create(const std::string& uuid, |
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89 const void* content, |
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90 size_t size, |
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91 OrthancPluginContentType type) |
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92 { |
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93 DatabaseManager::Transaction transaction(manager_, TransactionType_ReadWrite); |
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94 |
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95 { |
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96 DatabaseManager::CachedStatement statement( |
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97 STATEMENT_FROM_HERE, manager_, |
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98 "INSERT INTO StorageArea VALUES (${uuid}, ${content}, ${type})"); |
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99 |
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100 statement.SetParameterType("uuid", ValueType_Utf8String); |
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101 statement.SetParameterType("content", ValueType_InputFile); |
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102 statement.SetParameterType("type", ValueType_Integer64); |
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103 |
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104 Dictionary args; |
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105 args.SetUtf8Value("uuid", uuid); |
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106 args.SetFileValue("content", content, size); |
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107 args.SetIntegerValue("type", type); |
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108 |
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109 statement.Execute(args); |
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110 } |
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111 |
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112 transaction.Commit(); |
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113 } |
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114 |
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115 |
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116 void StorageBackend::AccessorBase::ReadWhole(StorageBackend::IFileContentVisitor& visitor, |
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117 const std::string& uuid, |
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118 OrthancPluginContentType type) |
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119 { |
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120 DatabaseManager::Transaction transaction(manager_, TransactionType_ReadOnly); |
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121 |
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122 { |
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123 DatabaseManager::CachedStatement statement( |
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124 STATEMENT_FROM_HERE, manager_, |
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125 "SELECT content FROM StorageArea WHERE uuid=${uuid} AND type=${type}"); |
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126 |
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127 statement.SetParameterType("uuid", ValueType_Utf8String); |
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128 statement.SetParameterType("type", ValueType_Integer64); |
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129 |
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130 Dictionary args; |
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131 args.SetUtf8Value("uuid", uuid); |
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132 args.SetIntegerValue("type", type); |
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133 |
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134 statement.Execute(args); |
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135 |
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136 if (statement.IsDone()) |
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137 { |
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138 throw Orthanc::OrthancException(Orthanc::ErrorCode_UnknownResource); |
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139 } |
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140 else if (statement.GetResultFieldsCount() != 1) |
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141 { |
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142 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); |
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143 } |
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144 else |
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145 { |
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146 const IValue& value = statement.GetResultField(0); |
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147 |
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148 switch (value.GetType()) |
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149 { |
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150 case ValueType_ResultFile: |
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151 { |
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152 std::string content; |
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153 dynamic_cast<const ResultFileValue&>(value).ReadWhole(content); |
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154 visitor.Assign(content); |
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155 break; |
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156 } |
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157 |
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158 case ValueType_BinaryString: |
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159 visitor.Assign(dynamic_cast<const BinaryStringValue&>(value).GetContent()); |
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160 break; |
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161 |
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162 default: |
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163 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); |
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164 } |
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165 } |
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166 } |
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167 |
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168 transaction.Commit(); |
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169 |
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170 if (!visitor.IsSuccess()) |
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171 { |
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172 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, "Could not read attachment from the storage area"); |
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173 } |
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174 } |
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175 |
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176 |
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177 void StorageBackend::AccessorBase::ReadRange(IFileContentVisitor& visitor, |
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178 const std::string& uuid, |
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179 OrthancPluginContentType type, |
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180 uint64_t start, |
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181 size_t length) |
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182 { |
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183 /** |
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184 * This is a generic implementation, that will only work if |
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185 * "ResultFileValue" is implemented by the database backend. For |
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186 * instance, this will *not* work with MySQL, as the latter uses |
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187 * BLOB columns to store files. |
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188 **/ |
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189 DatabaseManager::Transaction transaction(manager_, TransactionType_ReadOnly); |
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190 |
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191 { |
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192 DatabaseManager::CachedStatement statement( |
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193 STATEMENT_FROM_HERE, manager_, |
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194 "SELECT content FROM StorageArea WHERE uuid=${uuid} AND type=${type}"); |
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195 |
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196 statement.SetParameterType("uuid", ValueType_Utf8String); |
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197 statement.SetParameterType("type", ValueType_Integer64); |
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198 |
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199 Dictionary args; |
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200 args.SetUtf8Value("uuid", uuid); |
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201 args.SetIntegerValue("type", type); |
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202 |
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203 statement.Execute(args); |
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204 |
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205 if (statement.IsDone()) |
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206 { |
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207 throw Orthanc::OrthancException(Orthanc::ErrorCode_UnknownResource); |
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208 } |
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209 else if (statement.GetResultFieldsCount() != 1) |
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210 { |
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211 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); |
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212 } |
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213 else |
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214 { |
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215 const IValue& value = statement.GetResultField(0); |
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216 if (value.GetType() == ValueType_ResultFile) |
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217 { |
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218 std::string content; |
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219 dynamic_cast<const ResultFileValue&>(value).ReadRange(content, start, length); |
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220 visitor.Assign(content); |
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221 } |
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222 else |
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223 { |
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224 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); |
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225 } |
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226 } |
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227 } |
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228 |
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229 transaction.Commit(); |
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230 |
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231 if (!visitor.IsSuccess()) |
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232 { |
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233 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, "Could not read attachment from the storage area"); |
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234 } |
242
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235 } |
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236 |
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237 |
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238 void StorageBackend::AccessorBase::Remove(const std::string& uuid, |
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239 OrthancPluginContentType type) |
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240 { |
230
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241 DatabaseManager::Transaction transaction(manager_, TransactionType_ReadWrite); |
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242 |
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243 { |
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244 DatabaseManager::CachedStatement statement( |
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245 STATEMENT_FROM_HERE, manager_, |
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246 "DELETE FROM StorageArea WHERE uuid=${uuid} AND type=${type}"); |
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247 |
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248 statement.SetParameterType("uuid", ValueType_Utf8String); |
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249 statement.SetParameterType("type", ValueType_Integer64); |
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250 |
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251 Dictionary args; |
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252 args.SetUtf8Value("uuid", uuid); |
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253 args.SetIntegerValue("type", type); |
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254 |
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255 statement.Execute(args); |
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256 } |
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257 |
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258 transaction.Commit(); |
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259 } |
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260 |
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261 |
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262 |
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263 static OrthancPluginContext* context_ = NULL; |
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264 static std::unique_ptr<StorageBackend> backend_; |
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265 |
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266 |
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267 static OrthancPluginErrorCode StorageCreate(const char* uuid, |
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268 const void* content, |
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269 int64_t size, |
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270 OrthancPluginContentType type) |
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271 { |
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272 try |
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273 { |
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274 if (backend_.get() == NULL) |
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275 { |
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276 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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277 } |
230
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278 else |
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279 { |
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280 std::unique_ptr<StorageBackend::IAccessor> accessor(backend_->CreateAccessor()); |
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281 accessor->Create(uuid, content, static_cast<size_t>(size), type); |
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282 return OrthancPluginErrorCode_Success; |
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283 } |
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284 } |
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285 ORTHANC_PLUGINS_DATABASE_CATCH; |
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286 } |
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287 |
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288 |
195
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289 #if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 9, 0) |
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290 static OrthancPluginErrorCode StorageReadWhole(OrthancPluginMemoryBuffer64* target, |
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291 const char* uuid, |
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292 OrthancPluginContentType type) |
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293 { |
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294 class Visitor : public StorageBackend::IFileContentVisitor |
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295 { |
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296 private: |
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297 OrthancPluginMemoryBuffer64* target_; |
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298 bool success_; |
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299 |
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300 public: |
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301 Visitor(OrthancPluginMemoryBuffer64* target) : |
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302 target_(target), |
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303 success_(false) |
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304 { |
242
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305 if (target == NULL) |
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306 { |
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307 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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308 } |
195
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309 } |
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310 |
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311 virtual bool IsSuccess() const ORTHANC_OVERRIDE |
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312 { |
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313 return success_; |
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314 } |
195
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315 |
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316 virtual void Assign(const std::string& content) ORTHANC_OVERRIDE |
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317 { |
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318 if (success_) |
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319 { |
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320 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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321 } |
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322 else |
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323 { |
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324 assert(context_ != NULL); |
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325 |
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326 if (OrthancPluginCreateMemoryBuffer64(context_, target_, static_cast<uint64_t>(content.size())) != |
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327 OrthancPluginErrorCode_Success) |
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328 { |
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329 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotEnoughMemory); |
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330 } |
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331 |
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332 if (!content.empty()) |
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333 { |
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334 memcpy(target_->data, content.c_str(), content.size()); |
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335 } |
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336 |
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337 success_ = true; |
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338 } |
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339 } |
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340 }; |
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341 |
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342 |
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343 try |
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344 { |
219
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345 if (backend_.get() == NULL) |
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346 { |
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347 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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348 } |
242
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349 else |
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350 { |
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351 Visitor visitor(target); |
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352 |
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353 { |
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354 std::unique_ptr<StorageBackend::IAccessor> accessor(backend_->CreateAccessor()); |
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355 accessor->ReadWhole(visitor, uuid, type); |
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356 } |
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357 |
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358 return OrthancPluginErrorCode_Success; |
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359 } |
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360 } |
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361 ORTHANC_PLUGINS_DATABASE_CATCH; |
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362 } |
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363 |
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364 |
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365 static OrthancPluginErrorCode StorageReadRange(OrthancPluginMemoryBuffer64* target, |
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366 const char* uuid, |
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367 OrthancPluginContentType type, |
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368 uint64_t start) |
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369 { |
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370 class Visitor : public StorageBackend::IFileContentVisitor |
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371 { |
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372 private: |
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373 OrthancPluginMemoryBuffer64* target_; // This buffer is already allocated by the Orthanc core |
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374 bool success_; |
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375 |
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376 public: |
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377 Visitor(OrthancPluginMemoryBuffer64* target) : |
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378 target_(target), |
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379 success_(false) |
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380 { |
242
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381 if (target == NULL) |
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382 { |
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383 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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384 } |
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385 } |
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386 |
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387 virtual bool IsSuccess() const ORTHANC_OVERRIDE |
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388 { |
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389 return success_; |
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390 } |
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391 |
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392 virtual void Assign(const std::string& content) ORTHANC_OVERRIDE |
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393 { |
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394 if (success_) |
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395 { |
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396 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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397 } |
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398 else |
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399 { |
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400 if (content.size() != target_->size) |
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401 { |
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402 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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403 } |
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404 |
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405 if (!content.empty()) |
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406 { |
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407 memcpy(target_->data, content.c_str(), content.size()); |
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408 } |
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409 |
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410 success_ = true; |
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411 } |
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412 } |
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413 }; |
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414 |
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415 |
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416 try |
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417 { |
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418 if (backend_.get() == NULL) |
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419 { |
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420 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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421 } |
230
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422 else |
194
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423 { |
230
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424 Visitor visitor(target); |
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425 |
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426 { |
242
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427 std::unique_ptr<StorageBackend::IAccessor> accessor(backend_->CreateAccessor()); |
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428 accessor->ReadRange(visitor, uuid, type, start, target->size); |
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429 } |
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430 |
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431 return OrthancPluginErrorCode_Success; |
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432 } |
1
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433 } |
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434 ORTHANC_PLUGINS_DATABASE_CATCH; |
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435 } |
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436 #endif |
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437 |
219
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438 |
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439 static OrthancPluginErrorCode StorageRead(void** data, |
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440 int64_t* size, |
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441 const char* uuid, |
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442 OrthancPluginContentType type) |
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443 { |
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444 class Visitor : public StorageBackend::IFileContentVisitor |
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445 { |
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446 private: |
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447 void** data_; |
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448 int64_t* size_; |
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449 bool success_; |
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450 |
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451 public: |
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452 Visitor(void** data, |
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453 int64_t* size) : |
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454 data_(data), |
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455 size_(size), |
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456 success_(false) |
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457 { |
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458 } |
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459 |
230
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460 virtual bool IsSuccess() const ORTHANC_OVERRIDE |
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461 { |
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462 return success_; |
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463 } |
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464 |
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465 virtual void Assign(const std::string& content) ORTHANC_OVERRIDE |
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466 { |
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467 if (success_) |
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468 { |
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469 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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470 } |
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|
471 else |
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|
472 { |
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473 if (content.empty()) |
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474 { |
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475 *data_ = NULL; |
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476 *size_ = 0; |
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477 } |
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478 else |
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479 { |
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480 *size_ = static_cast<int64_t>(content.size()); |
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481 |
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482 if (static_cast<size_t>(*size_) != content.size()) |
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483 { |
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484 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotEnoughMemory, |
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485 "File cannot be stored in a 63bit buffer"); |
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486 } |
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487 |
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488 *data_ = malloc(*size_); |
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489 if (*data_ == NULL) |
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490 { |
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491 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotEnoughMemory); |
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492 } |
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493 |
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494 memcpy(*data_, content.c_str(), *size_); |
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495 } |
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496 |
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497 success_ = true; |
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498 } |
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|
499 } |
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|
500 }; |
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|
501 |
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|
502 |
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|
503 try |
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|
504 { |
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|
505 if (backend_.get() == NULL) |
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|
506 { |
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|
507 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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508 } |
230
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509 else if (data == NULL || |
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diff
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|
510 size == NULL) |
219
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diff
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|
511 { |
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|
512 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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513 } |
230
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514 else |
219
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diff
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|
515 { |
230
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diff
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|
516 Visitor visitor(data, size); |
219
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diff
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|
517 |
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diff
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|
518 { |
242
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diff
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|
519 std::unique_ptr<StorageBackend::IAccessor> accessor(backend_->CreateAccessor()); |
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diff
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|
520 accessor->ReadWhole(visitor, uuid, type); |
230
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diff
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|
521 } |
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diff
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|
522 |
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refactored StorageBackend by introducing an accessor class
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diff
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|
523 return OrthancPluginErrorCode_Success; |
219
dd6cfc250747
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208
diff
changeset
|
524 } |
dd6cfc250747
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parents:
208
diff
changeset
|
525 } |
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208
diff
changeset
|
526 ORTHANC_PLUGINS_DATABASE_CATCH; |
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208
diff
changeset
|
527 } |
dd6cfc250747
removed useless class StorageAreaBuffer
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208
diff
changeset
|
528 |
1
d17b2631bb67
starting StorageBackend
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parents:
diff
changeset
|
529 |
d17b2631bb67
starting StorageBackend
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parents:
diff
changeset
|
530 static OrthancPluginErrorCode StorageRemove(const char* uuid, |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
531 OrthancPluginContentType type) |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
532 { |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
533 try |
d17b2631bb67
starting StorageBackend
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parents:
diff
changeset
|
534 { |
230
675f8322eb7c
refactored StorageBackend by introducing an accessor class
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226
diff
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|
535 if (backend_.get() == NULL) |
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refactored StorageBackend by introducing an accessor class
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226
diff
changeset
|
536 { |
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refactored StorageBackend by introducing an accessor class
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226
diff
changeset
|
537 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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refactored StorageBackend by introducing an accessor class
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diff
changeset
|
538 } |
675f8322eb7c
refactored StorageBackend by introducing an accessor class
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diff
changeset
|
539 else |
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refactored StorageBackend by introducing an accessor class
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diff
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|
540 { |
242
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diff
changeset
|
541 std::unique_ptr<StorageBackend::IAccessor> accessor(backend_->CreateAccessor()); |
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diff
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|
542 accessor->Remove(uuid, type); |
230
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|
543 return OrthancPluginErrorCode_Success; |
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refactored StorageBackend by introducing an accessor class
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diff
changeset
|
544 } |
1
d17b2631bb67
starting StorageBackend
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parents:
diff
changeset
|
545 } |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
546 ORTHANC_PLUGINS_DATABASE_CATCH; |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
547 } |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
548 |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
549 |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
550 void StorageBackend::Register(OrthancPluginContext* context, |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
551 StorageBackend* backend) |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
552 { |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
553 if (context == NULL || |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
554 backend == NULL) |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
555 { |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
556 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
557 } |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
558 |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
559 if (context_ != NULL || |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
560 backend_.get() != NULL) |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
561 { |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
562 // This function can only be invoked once in the plugin |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
563 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
564 } |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
565 else |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
566 { |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
567 context_ = context; |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
568 backend_.reset(backend); |
d17b2631bb67
starting StorageBackend
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
569 |
219
dd6cfc250747
removed useless class StorageAreaBuffer
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208
diff
changeset
|
570 bool hasLoadedV2 = false; |
dd6cfc250747
removed useless class StorageAreaBuffer
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208
diff
changeset
|
571 |
dd6cfc250747
removed useless class StorageAreaBuffer
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parents:
208
diff
changeset
|
572 #if defined(ORTHANC_PLUGINS_VERSION_IS_ABOVE) // Macro introduced in Orthanc 1.3.1 |
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removed useless class StorageAreaBuffer
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208
diff
changeset
|
573 # if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 9, 0) |
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208
diff
changeset
|
574 if (OrthancPluginCheckVersionAdvanced(context, 1, 9, 0) == 1) |
dd6cfc250747
removed useless class StorageAreaBuffer
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208
diff
changeset
|
575 { |
242
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231
diff
changeset
|
576 OrthancPluginStorageReadRange readRange = NULL; |
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MySQL: Support of range reads for the storage area
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231
diff
changeset
|
577 if (backend_->HasReadRange()) |
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231
diff
changeset
|
578 { |
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diff
changeset
|
579 readRange = StorageReadRange; |
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diff
changeset
|
580 } |
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diff
changeset
|
581 |
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231
diff
changeset
|
582 OrthancPluginRegisterStorageArea2(context_, StorageCreate, StorageReadWhole, readRange, StorageRemove); |
219
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208
diff
changeset
|
583 hasLoadedV2 = true; |
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removed useless class StorageAreaBuffer
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diff
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|
584 } |
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585 # endif |
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586 #endif |
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587 |
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588 if (!hasLoadedV2) |
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589 { |
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590 OrthancPluginRegisterStorageArea(context_, StorageCreate, StorageRead, StorageRemove); |
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591 } |
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592 } |
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593 } |
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594 |
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595 |
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596 void StorageBackend::Finalize() |
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597 { |
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598 backend_.reset(NULL); |
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599 context_ = NULL; |
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600 } |
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601 |
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602 |
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603 class StorageBackend::StringVisitor : public StorageBackend::IFileContentVisitor |
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604 { |
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605 private: |
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606 std::string& target_; |
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607 bool success_; |
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608 |
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609 public: |
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610 StringVisitor(std::string& target) : |
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611 target_(target), |
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612 success_(false) |
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613 { |
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614 } |
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615 |
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616 virtual bool IsSuccess() const ORTHANC_OVERRIDE |
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617 { |
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618 return success_; |
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619 } |
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620 |
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621 virtual void Assign(const std::string& content) ORTHANC_OVERRIDE |
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622 { |
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623 if (success_) |
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624 { |
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625 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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626 } |
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627 else |
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628 { |
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629 target_.assign(content); |
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630 success_ = true; |
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631 } |
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632 } |
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633 }; |
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634 |
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635 |
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636 void StorageBackend::ReadWholeToString(std::string& target, |
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637 IAccessor& accessor, |
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638 const std::string& uuid, |
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639 OrthancPluginContentType type) |
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640 { |
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641 StringVisitor visitor(target); |
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642 accessor.ReadWhole(visitor, uuid, type); |
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643 |
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644 if (!visitor.IsSuccess()) |
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645 { |
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646 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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647 } |
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648 } |
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649 |
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650 |
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651 void StorageBackend::ReadRangeToString(std::string& target, |
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652 IAccessor& accessor, |
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653 const std::string& uuid, |
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654 OrthancPluginContentType type, |
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655 uint64_t start, |
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656 size_t length) |
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657 { |
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658 StringVisitor visitor(target); |
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659 accessor.ReadRange(visitor, uuid, type, start, length); |
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660 |
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661 if (!visitor.IsSuccess()) |
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662 { |
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663 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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664 } |
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665 } |
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666 } |