annotate Core/SQLite/Statement.cpp @ 1380:31b884468b05

fix
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 29 May 2015 13:23:54 +0200
parents 63d47b1fa239
children 3b68924ffb24
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 <sqlite3.h>
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46 #include <string.h>
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47 #include <stdio.h>
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48 #include <algorithm>
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49
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50 #if ORTHANC_SQLITE_STANDALONE != 1
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51 #include <glog/logging.h>
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52 #endif
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53
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54 #if defined(_MSC_VER)
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55 #define snprintf _snprintf
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56 #endif
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57
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58 namespace Orthanc
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59 {
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60 namespace SQLite
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61 {
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62 int Statement::CheckError(int err) const
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63 {
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64 bool succeeded = (err == SQLITE_OK || err == SQLITE_ROW || err == SQLITE_DONE);
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65 if (!succeeded)
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66 {
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67 char buffer[128];
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68 snprintf(buffer, sizeof(buffer) - 1, "SQLite error code %d", err);
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69 throw OrthancSQLiteException(buffer);
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70 }
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71
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72 return err;
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73 }
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74
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75 void Statement::CheckOk(int err) const
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76 {
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77 if (err == SQLITE_RANGE)
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78 {
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79 // Binding to a non-existent variable is evidence of a serious error.
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80 throw OrthancSQLiteException("Bind value out of range");
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81 }
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82 else if (err != SQLITE_OK)
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83 {
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84 char buffer[128];
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85 snprintf(buffer, sizeof(buffer) - 1, "SQLite error code %d", err);
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86 throw OrthancSQLiteException(buffer);
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87 }
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88 }
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90
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91 Statement::Statement(Connection& database,
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92 const StatementId& id,
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93 const std::string& sql) :
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94 reference_(database.GetCachedStatement(id, sql.c_str()))
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95 {
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96 Reset(true);
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97 }
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98
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99
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100 Statement::Statement(Connection& database,
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101 const StatementId& id,
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102 const char* sql) :
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103 reference_(database.GetCachedStatement(id, sql))
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104 {
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105 Reset(true);
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106 }
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107
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108
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109 Statement::Statement(Connection& database,
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110 const std::string& sql) :
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111 reference_(database.GetWrappedObject(), sql.c_str())
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112 {
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113 }
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114
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115
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116 Statement::Statement(Connection& database,
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117 const char* sql) :
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118 reference_(database.GetWrappedObject(), sql)
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119 {
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120 }
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121
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122
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123 bool Statement::Run()
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124 {
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125 #if ORTHANC_SQLITE_STANDALONE != 1
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126 VLOG(1) << "SQLite::Statement::Run " << sqlite3_sql(GetStatement());
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127 #endif
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128
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129 return CheckError(sqlite3_step(GetStatement())) == SQLITE_DONE;
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130 }
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131
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132 bool Statement::Step()
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133 {
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134 #if ORTHANC_SQLITE_STANDALONE != 1
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135 VLOG(1) << "SQLite::Statement::Step " << sqlite3_sql(GetStatement());
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136 #endif
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137
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138 return CheckError(sqlite3_step(GetStatement())) == SQLITE_ROW;
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139 }
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140
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141 void Statement::Reset(bool clear_bound_vars)
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142 {
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143 // We don't call CheckError() here because sqlite3_reset() returns
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144 // the last error that Step() caused thereby generating a second
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145 // spurious error callback.
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146 if (clear_bound_vars)
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147 sqlite3_clear_bindings(GetStatement());
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148 //VLOG(1) << "SQLite::Statement::Reset";
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149 sqlite3_reset(GetStatement());
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150 }
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151
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152 std::string Statement::GetOriginalSQLStatement()
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153 {
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154 return std::string(sqlite3_sql(GetStatement()));
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155 }
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156
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157
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158 void Statement::BindNull(int col)
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159 {
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160 CheckOk(sqlite3_bind_null(GetStatement(), col + 1));
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161 }
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162
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163 void Statement::BindBool(int col, bool val)
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164 {
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165 BindInt(col, val ? 1 : 0);
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166 }
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167
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168 void Statement::BindInt(int col, int val)
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169 {
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170 CheckOk(sqlite3_bind_int(GetStatement(), col + 1, val));
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171 }
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172
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173 void Statement::BindInt64(int col, int64_t val)
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174 {
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175 CheckOk(sqlite3_bind_int64(GetStatement(), col + 1, val));
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176 }
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177
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178 void Statement::BindDouble(int col, double val)
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179 {
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180 CheckOk(sqlite3_bind_double(GetStatement(), col + 1, val));
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181 }
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182
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183 void Statement::BindCString(int col, const char* val)
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184 {
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185 CheckOk(sqlite3_bind_text(GetStatement(), col + 1, val, -1, SQLITE_TRANSIENT));
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186 }
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187
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188 void Statement::BindString(int col, const std::string& val)
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189 {
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190 CheckOk(sqlite3_bind_text(GetStatement(),
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191 col + 1,
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192 val.data(),
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193 val.size(),
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194 SQLITE_TRANSIENT));
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195 }
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196
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197 /*void Statement::BindString16(int col, const string16& value)
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198 {
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199 BindString(col, UTF16ToUTF8(value));
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200 }*/
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201
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202 void Statement::BindBlob(int col, const void* val, int val_len)
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203 {
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204 CheckOk(sqlite3_bind_blob(GetStatement(), col + 1, val, val_len, SQLITE_TRANSIENT));
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205 }
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206
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207
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208 int Statement::ColumnCount() const
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209 {
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210 return sqlite3_column_count(GetStatement());
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211 }
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212
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213
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214 ColumnType Statement::GetColumnType(int col) const
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215 {
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216 // Verify that our enum matches sqlite's values.
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217 assert(COLUMN_TYPE_INTEGER == SQLITE_INTEGER);
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218 assert(COLUMN_TYPE_FLOAT == SQLITE_FLOAT);
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219 assert(COLUMN_TYPE_TEXT == SQLITE_TEXT);
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220 assert(COLUMN_TYPE_BLOB == SQLITE_BLOB);
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221 assert(COLUMN_TYPE_NULL == SQLITE_NULL);
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222
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223 return static_cast<ColumnType>(sqlite3_column_type(GetStatement(), col));
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224 }
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225
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226 ColumnType Statement::GetDeclaredColumnType(int col) const
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227 {
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228 std::string column_type(sqlite3_column_decltype(GetStatement(), col));
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229 std::transform(column_type.begin(), column_type.end(), column_type.begin(), tolower);
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230
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231 if (column_type == "integer")
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232 return COLUMN_TYPE_INTEGER;
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233 else if (column_type == "float")
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234 return COLUMN_TYPE_FLOAT;
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235 else if (column_type == "text")
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236 return COLUMN_TYPE_TEXT;
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237 else if (column_type == "blob")
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238 return COLUMN_TYPE_BLOB;
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239
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240 return COLUMN_TYPE_NULL;
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241 }
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242
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243 bool Statement::ColumnIsNull(int col) const
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244 {
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245 return sqlite3_column_type(GetStatement(), col) == SQLITE_NULL;
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246 }
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247
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248 bool Statement::ColumnBool(int col) const
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249 {
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250 return !!ColumnInt(col);
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251 }
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252
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253 int Statement::ColumnInt(int col) const
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254 {
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255 return sqlite3_column_int(GetStatement(), col);
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256 }
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257
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258 int64_t Statement::ColumnInt64(int col) const
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259 {
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260 return sqlite3_column_int64(GetStatement(), col);
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261 }
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262
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263 double Statement::ColumnDouble(int col) const
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264 {
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265 return sqlite3_column_double(GetStatement(), col);
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266 }
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267
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268 std::string Statement::ColumnString(int col) const
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269 {
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270 const char* str = reinterpret_cast<const char*>(
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271 sqlite3_column_text(GetStatement(), col));
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272 int len = sqlite3_column_bytes(GetStatement(), col);
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273
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274 std::string result;
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275 if (str && len > 0)
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276 result.assign(str, len);
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277 return result;
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278 }
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279
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280 /*string16 Statement::ColumnString16(int col) const
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281 {
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282 std::string s = ColumnString(col);
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283 return !s.empty() ? UTF8ToUTF16(s) : string16();
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284 }*/
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285
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286 int Statement::ColumnByteLength(int col) const
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287 {
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288 return sqlite3_column_bytes(GetStatement(), col);
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289 }
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290
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291 const void* Statement::ColumnBlob(int col) const
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292 {
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293 return sqlite3_column_blob(GetStatement(), col);
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294 }
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295
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296 bool Statement::ColumnBlobAsString(int col, std::string* blob)
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297 {
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298 const void* p = ColumnBlob(col);
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299 size_t len = ColumnByteLength(col);
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300 blob->resize(len);
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301 if (blob->size() != len) {
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302 return false;
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303 }
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304 blob->assign(reinterpret_cast<const char*>(p), len);
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305 return true;
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306 }
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307
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308 /*bool Statement::ColumnBlobAsString16(int col, string16* val) const
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309 {
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310 const void* data = ColumnBlob(col);
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311 size_t len = ColumnByteLength(col) / sizeof(char16);
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312 val->resize(len);
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313 if (val->size() != len)
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314 return false;
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315 val->assign(reinterpret_cast<const char16*>(data), len);
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316 return true;
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317 }*/
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318
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319 /*bool Statement::ColumnBlobAsVector(int col, std::vector<char>* val) const
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320 {
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321 val->clear();
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322
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323 const void* data = sqlite3_column_blob(GetStatement(), col);
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324 int len = sqlite3_column_bytes(GetStatement(), col);
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325 if (data && len > 0) {
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326 val->resize(len);
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327 memcpy(&(*val)[0], data, len);
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328 }
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329 return true;
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330 }*/
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331
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332 /*bool Statement::ColumnBlobAsVector(
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333 int col,
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334 std::vector<unsigned char>* val) const
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335 {
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336 return ColumnBlobAsVector(col, reinterpret_cast< std::vector<char>* >(val));
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337 }*/
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338
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339 }
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340 }