Mercurial > hg > orthanc-databases
annotate Framework/Odbc/OdbcPreparedStatement.cpp @ 354:2a3bbb4104fa
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 25 Nov 2021 13:17:51 +0100 |
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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 * 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 "OdbcPreparedStatement.h" |
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23 |
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24 #include "../Common/InputFileValue.h" |
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25 #include "../Common/Integer64Value.h" |
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26 #include "../Common/Utf8StringValue.h" |
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27 #include "OdbcResult.h" |
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28 |
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29 #include <Logging.h> |
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30 #include <OrthancException.h> |
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31 |
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32 #include <sqlext.h> |
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33 |
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34 |
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35 namespace OrthancDatabases |
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36 { |
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37 void OdbcPreparedStatement::Setup(const Query& query) |
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38 { |
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39 formatter_.SetNamedDialect(Dialect_MSSQL); /* ODBC uses "?" to name its parameters */ |
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40 |
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41 std::string sql; |
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42 query.Format(sql, formatter_); |
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43 |
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44 LOG(INFO) << "Preparing ODBC statement: " << sql; |
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45 SQLCHAR* s = const_cast<SQLCHAR*>(reinterpret_cast<const SQLCHAR*>(sql.c_str())); |
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46 |
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47 if (!SQL_SUCCEEDED(SQLPrepare(statement_.GetHandle(), s, SQL_NTS))) |
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48 { |
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49 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, |
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50 "Cannot prepare ODBC statement: " + sql); |
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51 } |
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52 |
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53 paramsIndex_.resize(formatter_.GetParametersCount()); |
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54 |
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55 size_t countInt64 = 0; |
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56 size_t countStrings = 0; |
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57 |
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58 for (size_t i = 0; i < paramsIndex_.size(); i++) |
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59 { |
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60 switch (formatter_.GetParameterType(i)) |
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61 { |
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62 case ValueType_Integer64: |
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63 paramsIndex_[i] = countInt64; |
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64 countInt64++; |
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65 break; |
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66 |
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67 case ValueType_InputFile: |
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68 case ValueType_Utf8String: |
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69 paramsIndex_[i] = countStrings; |
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70 countStrings++; |
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71 break; |
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72 |
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73 default: |
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74 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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75 } |
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76 } |
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77 |
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78 paramsInt64_.resize(countInt64); |
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79 paramsString_.resize(countStrings); |
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80 } |
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81 |
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82 |
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83 OdbcPreparedStatement::OdbcPreparedStatement(SQLHSTMT databaseHandle, |
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84 Dialect dialect, |
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85 const Query& query) : |
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86 statement_(databaseHandle), |
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87 formatter_(dialect) |
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88 { |
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89 Setup(query); |
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90 } |
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91 |
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92 |
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93 OdbcPreparedStatement::OdbcPreparedStatement(SQLHSTMT databaseHandle, |
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94 Dialect dialect, |
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95 const std::string& sql) : |
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96 statement_(databaseHandle), |
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97 formatter_(dialect) |
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98 { |
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99 Query query(sql); |
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100 Setup(query); |
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101 } |
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102 |
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103 |
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104 IResult* OdbcPreparedStatement::Execute() |
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105 { |
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106 Dictionary parameters; |
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107 return Execute(parameters); |
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108 } |
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109 |
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110 |
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111 IResult* OdbcPreparedStatement::Execute(const Dictionary& parameters) |
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112 { |
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113 /** |
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114 * NB: This class creates a copy of all the string parameters from |
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115 * "parameters", because "SQLBindParameter()" assumes that the |
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116 * lifetime of the bound values must be larger than the lifetime |
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117 * of the cursor. This is no problem for the index plugin, but |
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118 * might be problematic if storing large files in the storage area |
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119 * (as this doubles RAM requirements). |
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120 **/ |
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121 |
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122 for (size_t i = 0; i < formatter_.GetParametersCount(); i++) |
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123 { |
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124 const std::string& name = formatter_.GetParameterName(i); |
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125 |
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126 if (!parameters.HasKey(name)) |
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127 { |
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128 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem, |
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129 "Missing parameter to SQL prepared statement: " + name); |
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130 } |
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131 else |
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132 { |
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133 const IValue& value = parameters.GetValue(name); |
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134 if (value.GetType() == ValueType_Null) |
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135 { |
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136 SQLSMALLINT cType, sqlType; |
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137 |
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138 switch (formatter_.GetParameterType(i)) |
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139 { |
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140 case ValueType_Integer64: |
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141 cType = SQL_C_SBIGINT; |
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142 sqlType = SQL_BIGINT; |
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143 break; |
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144 |
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145 case ValueType_Utf8String: |
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146 cType = SQL_C_CHAR; |
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147 sqlType = SQL_VARCHAR; |
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148 break; |
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149 |
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150 default: |
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151 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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152 } |
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153 |
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154 SQLLEN null = SQL_NULL_DATA; |
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155 if (!SQL_SUCCEEDED(SQLBindParameter(statement_.GetHandle(), i + 1, SQL_PARAM_INPUT, cType, sqlType, |
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156 0 /* ignored */, 0 /* ignored */, NULL, 0, &null))) |
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157 { |
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158 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, |
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159 "Cannot bind NULL parameter: " + statement_.FormatError()); |
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160 } |
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161 } |
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162 else if (value.GetType() != formatter_.GetParameterType(i)) |
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163 { |
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164 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType, |
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165 "Parameter \"" + name + "\" should be of type \"" + |
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166 EnumerationToString(formatter_.GetParameterType(i)) + |
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167 "\", found \"" + EnumerationToString(value.GetType()) + "\""); |
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168 } |
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169 else |
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170 { |
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171 assert(i < paramsIndex_.size()); |
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172 size_t index = paramsIndex_[i]; |
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173 |
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174 switch (value.GetType()) |
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175 { |
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176 case ValueType_Integer64: |
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177 assert(index < paramsInt64_.size()); |
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178 paramsInt64_[index] = dynamic_cast<const Integer64Value&>(value).GetValue(); |
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179 |
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180 if (!SQL_SUCCEEDED(SQLBindParameter(statement_.GetHandle(), i + 1, SQL_PARAM_INPUT, SQL_C_SBIGINT, SQL_BIGINT, |
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181 0 /* ignored */, 0 /* ignored */, ¶msInt64_[index], |
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182 sizeof(int64_t), NULL))) |
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183 { |
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184 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, |
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185 "Cannot bind integer parameter: " + statement_.FormatError()); |
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186 } |
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187 |
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188 break; |
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189 |
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190 case ValueType_Utf8String: |
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191 { |
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192 assert(index < paramsString_.size()); |
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193 paramsString_[index] = dynamic_cast<const Utf8StringValue&>(value).GetContent(); |
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194 |
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195 const char* content = (paramsString_[index].empty() ? "" : paramsString_[index].c_str()); |
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196 |
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197 if (!SQL_SUCCEEDED(SQLBindParameter( |
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198 statement_.GetHandle(), i + 1, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_VARCHAR, |
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199 0 /* ignored */, 0 /* ignored */, const_cast<char*>(content), paramsString_[index].size(), NULL))) |
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200 { |
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201 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, |
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202 "Cannot bind UTF-8 parameter: " + statement_.FormatError()); |
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203 } |
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204 |
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205 break; |
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206 } |
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207 |
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208 case ValueType_InputFile: |
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209 { |
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210 assert(index < paramsString_.size()); |
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211 paramsString_[index] = dynamic_cast<const InputFileValue&>(value).GetContent(); |
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212 |
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213 const char* content = (paramsString_[index].empty() ? NULL : paramsString_[index].c_str()); |
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214 |
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215 SQLLEN a = paramsString_[index].size(); |
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216 if (!SQL_SUCCEEDED(SQLBindParameter( |
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217 statement_.GetHandle(), i + 1, SQL_PARAM_INPUT, SQL_C_BINARY, SQL_LONGVARBINARY, |
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218 paramsString_[index].size() /* only used by MSSQL */, |
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219 0 /* ignored */, const_cast<char*>(content), 0, &a))) |
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220 { |
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221 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, |
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222 "Cannot bind binary parameter: " + statement_.FormatError()); |
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223 } |
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224 |
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225 break; |
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226 } |
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227 |
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228 default: |
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229 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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230 } |
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231 } |
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232 } |
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233 } |
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234 |
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235 const Dialect dialect = formatter_.GetAutoincrementDialect(); |
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236 |
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237 SQLRETURN code = SQLExecute(statement_.GetHandle()); |
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238 |
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239 if (code == SQL_SUCCESS || |
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240 code == SQL_NO_DATA /* this is the case of DELETE in PostgreSQL and MSSQL */) |
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241 { |
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242 return new OdbcResult(statement_, dialect); |
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243 } |
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244 else |
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245 { |
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246 statement_.CheckCollision(dialect); |
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247 |
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248 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, |
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249 "Cannot execute ODBC statement:\n" + statement_.FormatError()); |
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250 } |
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251 } |
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252 } |