annotate Core/SQLite/Statement.cpp @ 1486:f967bdf8534e

refactoring to Logging.h
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 04 Aug 2015 10:01:31 +0200
parents 3b68924ffb24
children bd1889029cbb
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 *
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4 * Copyright (C) 2012-2015 Sebastien Jodogne <s.jodogne@gmail.com>,
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5 * Medical Physics Department, CHU of Liege, Belgium
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6 *
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7 * Copyright (c) 2012 The Chromium Authors. All rights reserved.
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8 *
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9 * Redistribution and use in source and binary forms, with or without
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10 * modification, are permitted provided that the following conditions are
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11 * met:
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12 *
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13 * * Redistributions of source code must retain the above copyright
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14 * notice, this list of conditions and the following disclaimer.
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15 * * Redistributions in binary form must reproduce the above
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16 * copyright notice, this list of conditions and the following disclaimer
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17 * in the documentation and/or other materials provided with the
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18 * distribution.
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19 * * Neither the name of Google Inc., the name of the CHU of Liege,
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20 * nor the names of its contributors may be used to endorse or promote
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21 * products derived from this software without specific prior written
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22 * permission.
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23 *
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24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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35 **/
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38 #if ORTHANC_SQLITE_STANDALONE != 1
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39 #include "../PrecompiledHeaders.h"
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40 #endif
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41
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42 #include "Statement.h"
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43 #include "Connection.h"
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44
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45 #include <string.h>
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46 #include <stdio.h>
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47 #include <algorithm>
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48
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49 #if ORTHANC_SQLITE_STANDALONE != 1
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50 #include "../Logging.h"
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51 #endif
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52
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53 #include "sqlite3.h"
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54
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55 #if defined(_MSC_VER)
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56 #define snprintf _snprintf
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57 #endif
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58
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59 namespace Orthanc
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60 {
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61 namespace SQLite
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62 {
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63 int Statement::CheckError(int err) const
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64 {
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65 bool succeeded = (err == SQLITE_OK || err == SQLITE_ROW || err == SQLITE_DONE);
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66 if (!succeeded)
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67 {
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68 char buffer[128];
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69 snprintf(buffer, sizeof(buffer) - 1, "SQLite error code %d", err);
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70 throw OrthancSQLiteException(buffer);
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71 }
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72
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73 return err;
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74 }
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75
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76 void Statement::CheckOk(int err) const
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77 {
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78 if (err == SQLITE_RANGE)
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79 {
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80 // Binding to a non-existent variable is evidence of a serious error.
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81 throw OrthancSQLiteException("Bind value out of range");
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82 }
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83 else if (err != SQLITE_OK)
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84 {
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85 char buffer[128];
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86 snprintf(buffer, sizeof(buffer) - 1, "SQLite error code %d", err);
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87 throw OrthancSQLiteException(buffer);
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88 }
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89 }
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91
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92 Statement::Statement(Connection& database,
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93 const StatementId& id,
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94 const std::string& sql) :
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95 reference_(database.GetCachedStatement(id, sql.c_str()))
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96 {
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97 Reset(true);
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98 }
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100
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101 Statement::Statement(Connection& database,
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102 const StatementId& id,
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103 const char* sql) :
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104 reference_(database.GetCachedStatement(id, sql))
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105 {
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106 Reset(true);
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107 }
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108
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109
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110 Statement::Statement(Connection& database,
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111 const std::string& sql) :
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112 reference_(database.GetWrappedObject(), sql.c_str())
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113 {
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114 }
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115
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116
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117 Statement::Statement(Connection& database,
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118 const char* sql) :
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119 reference_(database.GetWrappedObject(), sql)
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120 {
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121 }
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122
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123
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124 bool Statement::Run()
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125 {
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126 #if ORTHANC_SQLITE_STANDALONE != 1
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127 VLOG(1) << "SQLite::Statement::Run " << sqlite3_sql(GetStatement());
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128 #endif
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129
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130 return CheckError(sqlite3_step(GetStatement())) == SQLITE_DONE;
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131 }
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132
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133 bool Statement::Step()
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134 {
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135 #if ORTHANC_SQLITE_STANDALONE != 1
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136 VLOG(1) << "SQLite::Statement::Step " << sqlite3_sql(GetStatement());
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137 #endif
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138
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139 return CheckError(sqlite3_step(GetStatement())) == SQLITE_ROW;
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140 }
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141
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142 void Statement::Reset(bool clear_bound_vars)
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143 {
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144 // We don't call CheckError() here because sqlite3_reset() returns
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145 // the last error that Step() caused thereby generating a second
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146 // spurious error callback.
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147 if (clear_bound_vars)
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148 sqlite3_clear_bindings(GetStatement());
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149 //VLOG(1) << "SQLite::Statement::Reset";
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150 sqlite3_reset(GetStatement());
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151 }
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152
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153 std::string Statement::GetOriginalSQLStatement()
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154 {
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155 return std::string(sqlite3_sql(GetStatement()));
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156 }
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157
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158
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159 void Statement::BindNull(int col)
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160 {
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161 CheckOk(sqlite3_bind_null(GetStatement(), col + 1));
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162 }
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163
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164 void Statement::BindBool(int col, bool val)
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165 {
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166 BindInt(col, val ? 1 : 0);
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167 }
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168
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169 void Statement::BindInt(int col, int val)
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170 {
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171 CheckOk(sqlite3_bind_int(GetStatement(), col + 1, val));
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172 }
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173
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174 void Statement::BindInt64(int col, int64_t val)
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175 {
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176 CheckOk(sqlite3_bind_int64(GetStatement(), col + 1, val));
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177 }
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178
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179 void Statement::BindDouble(int col, double val)
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180 {
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181 CheckOk(sqlite3_bind_double(GetStatement(), col + 1, val));
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182 }
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183
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184 void Statement::BindCString(int col, const char* val)
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185 {
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186 CheckOk(sqlite3_bind_text(GetStatement(), col + 1, val, -1, SQLITE_TRANSIENT));
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187 }
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188
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189 void Statement::BindString(int col, const std::string& val)
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190 {
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191 CheckOk(sqlite3_bind_text(GetStatement(),
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192 col + 1,
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193 val.data(),
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194 val.size(),
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195 SQLITE_TRANSIENT));
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196 }
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197
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198 /*void Statement::BindString16(int col, const string16& value)
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199 {
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200 BindString(col, UTF16ToUTF8(value));
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201 }*/
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202
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203 void Statement::BindBlob(int col, const void* val, int val_len)
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204 {
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205 CheckOk(sqlite3_bind_blob(GetStatement(), col + 1, val, val_len, SQLITE_TRANSIENT));
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206 }
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207
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208
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209 int Statement::ColumnCount() const
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210 {
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211 return sqlite3_column_count(GetStatement());
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212 }
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213
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214
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215 ColumnType Statement::GetColumnType(int col) const
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216 {
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217 // Verify that our enum matches sqlite's values.
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218 assert(COLUMN_TYPE_INTEGER == SQLITE_INTEGER);
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219 assert(COLUMN_TYPE_FLOAT == SQLITE_FLOAT);
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220 assert(COLUMN_TYPE_TEXT == SQLITE_TEXT);
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221 assert(COLUMN_TYPE_BLOB == SQLITE_BLOB);
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222 assert(COLUMN_TYPE_NULL == SQLITE_NULL);
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223
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224 return static_cast<ColumnType>(sqlite3_column_type(GetStatement(), col));
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225 }
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226
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227 ColumnType Statement::GetDeclaredColumnType(int col) const
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228 {
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229 std::string column_type(sqlite3_column_decltype(GetStatement(), col));
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230 std::transform(column_type.begin(), column_type.end(), column_type.begin(), tolower);
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231
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232 if (column_type == "integer")
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233 return COLUMN_TYPE_INTEGER;
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234 else if (column_type == "float")
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235 return COLUMN_TYPE_FLOAT;
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236 else if (column_type == "text")
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237 return COLUMN_TYPE_TEXT;
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238 else if (column_type == "blob")
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239 return COLUMN_TYPE_BLOB;
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240
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241 return COLUMN_TYPE_NULL;
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242 }
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243
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244 bool Statement::ColumnIsNull(int col) const
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245 {
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246 return sqlite3_column_type(GetStatement(), col) == SQLITE_NULL;
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247 }
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248
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249 bool Statement::ColumnBool(int col) const
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250 {
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251 return !!ColumnInt(col);
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252 }
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253
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254 int Statement::ColumnInt(int col) const
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255 {
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256 return sqlite3_column_int(GetStatement(), col);
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257 }
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258
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259 int64_t Statement::ColumnInt64(int col) const
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260 {
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261 return sqlite3_column_int64(GetStatement(), col);
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262 }
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263
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264 double Statement::ColumnDouble(int col) const
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265 {
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266 return sqlite3_column_double(GetStatement(), col);
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267 }
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268
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269 std::string Statement::ColumnString(int col) const
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270 {
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271 const char* str = reinterpret_cast<const char*>(
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272 sqlite3_column_text(GetStatement(), col));
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273 int len = sqlite3_column_bytes(GetStatement(), col);
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274
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275 std::string result;
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276 if (str && len > 0)
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277 result.assign(str, len);
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278 return result;
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279 }
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280
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281 /*string16 Statement::ColumnString16(int col) const
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282 {
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283 std::string s = ColumnString(col);
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284 return !s.empty() ? UTF8ToUTF16(s) : string16();
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285 }*/
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286
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287 int Statement::ColumnByteLength(int col) const
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288 {
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289 return sqlite3_column_bytes(GetStatement(), col);
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290 }
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291
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292 const void* Statement::ColumnBlob(int col) const
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293 {
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294 return sqlite3_column_blob(GetStatement(), col);
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295 }
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296
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297 bool Statement::ColumnBlobAsString(int col, std::string* blob)
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298 {
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299 const void* p = ColumnBlob(col);
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300 size_t len = ColumnByteLength(col);
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301 blob->resize(len);
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302 if (blob->size() != len) {
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303 return false;
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304 }
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305 blob->assign(reinterpret_cast<const char*>(p), len);
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306 return true;
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307 }
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308
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309 /*bool Statement::ColumnBlobAsString16(int col, string16* val) const
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310 {
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311 const void* data = ColumnBlob(col);
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312 size_t len = ColumnByteLength(col) / sizeof(char16);
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313 val->resize(len);
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314 if (val->size() != len)
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315 return false;
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316 val->assign(reinterpret_cast<const char16*>(data), len);
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317 return true;
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318 }*/
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319
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320 /*bool Statement::ColumnBlobAsVector(int col, std::vector<char>* val) const
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321 {
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322 val->clear();
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323
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324 const void* data = sqlite3_column_blob(GetStatement(), col);
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325 int len = sqlite3_column_bytes(GetStatement(), col);
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326 if (data && len > 0) {
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327 val->resize(len);
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328 memcpy(&(*val)[0], data, len);
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329 }
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330 return true;
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331 }*/
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332
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333 /*bool Statement::ColumnBlobAsVector(
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334 int col,
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335 std::vector<unsigned char>* val) const
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336 {
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337 return ColumnBlobAsVector(col, reinterpret_cast< std::vector<char>* >(val));
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338 }*/
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339
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340 }
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341 }