annotate Core/SQLite/Statement.cpp @ 3818:4f78da5613a1 c-get

Add C-GET SCP support
author Stacy Loesch <stacy.loesch@varian.com>
date Fri, 27 Mar 2020 10:06:58 -0400
parents 113a9643e8bb
children
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) 2012-2016 Sebastien Jodogne <s.jodogne@orthanc-labs.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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37
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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 // Trace logging is disabled if this SQLite wrapper is used
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51 // independently of Orthanc
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52 # define LOG_CREATE(message);
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53 # define LOG_APPLY(message);
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54 #elif defined(NDEBUG)
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55 // Trace logging is disabled in release builds
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56 # include "../Logging.h"
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57 # define LOG_CREATE(message);
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58 # define LOG_APPLY(message);
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59 #else
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60 // Trace logging is enabled in debug builds
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61 # include "../Logging.h"
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62 # define LOG_CREATE(message) VLOG(1) << "SQLite::Statement create: " << message;
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63 # define LOG_APPLY(message); // VLOG(1) << "SQLite::Statement apply: " << message;
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64 #endif
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65
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66 #include "sqlite3.h"
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67
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68 #if defined(_MSC_VER)
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69 #define snprintf _snprintf
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70 #endif
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71
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72
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73 namespace Orthanc
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74 {
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75 namespace SQLite
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76 {
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77 int Statement::CheckError(int err, ErrorCode code) const
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78 {
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79 bool succeeded = (err == SQLITE_OK || err == SQLITE_ROW || err == SQLITE_DONE);
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80 if (!succeeded)
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81 {
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82 #if ORTHANC_SQLITE_STANDALONE != 1
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83 char buffer[128];
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84 snprintf(buffer, sizeof(buffer) - 1, "SQLite error code %d", err);
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85 LOG(ERROR) << buffer;
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86 #endif
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87
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88 throw OrthancSQLiteException(code);
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89 }
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90
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91 return err;
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92 }
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93
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94 void Statement::CheckOk(int err, ErrorCode code) const
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95 {
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96 if (err == SQLITE_RANGE)
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97 {
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98 // Binding to a non-existent variable is evidence of a serious error.
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99 throw OrthancSQLiteException(ErrorCode_SQLiteBindOutOfRange);
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100 }
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101 else if (err != SQLITE_OK)
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102 {
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103 #if ORTHANC_SQLITE_STANDALONE != 1
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104 char buffer[128];
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105 snprintf(buffer, sizeof(buffer) - 1, "SQLite error code %d", err);
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106 LOG(ERROR) << buffer;
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107 #endif
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108
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109 throw OrthancSQLiteException(code);
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110 }
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111 }
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112
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113
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114 Statement::Statement(Connection& database,
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115 const StatementId& id,
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116 const std::string& sql) :
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117 reference_(database.GetCachedStatement(id, sql.c_str()))
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118 {
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119 Reset(true);
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120 LOG_CREATE(sql);
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121 }
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122
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123
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124 Statement::Statement(Connection& database,
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125 const StatementId& id,
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126 const char* sql) :
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127 reference_(database.GetCachedStatement(id, sql))
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128 {
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129 Reset(true);
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130 LOG_CREATE(sql);
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131 }
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132
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133
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134 Statement::Statement(Connection& database,
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135 const std::string& sql) :
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136 reference_(database.GetWrappedObject(), sql.c_str())
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137 {
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138 LOG_CREATE(sql);
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139 }
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140
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141
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142 Statement::Statement(Connection& database,
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143 const char* sql) :
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144 reference_(database.GetWrappedObject(), sql)
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145 {
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146 LOG_CREATE(sql);
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147 }
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148
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149
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150 bool Statement::Run()
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151 {
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152 LOG_APPLY(sqlite3_sql(GetStatement()));
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153
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154 return CheckError(sqlite3_step(GetStatement()), ErrorCode_SQLiteCannotRun) == SQLITE_DONE;
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155 }
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156
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157 bool Statement::Step()
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158 {
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159 LOG_APPLY(sqlite3_sql(GetStatement()));
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160
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161 return CheckError(sqlite3_step(GetStatement()), ErrorCode_SQLiteCannotStep) == SQLITE_ROW;
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162 }
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163
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164 void Statement::Reset(bool clear_bound_vars)
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165 {
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166 // We don't call CheckError() here because sqlite3_reset() returns
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167 // the last error that Step() caused thereby generating a second
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168 // spurious error callback.
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169 if (clear_bound_vars)
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170 sqlite3_clear_bindings(GetStatement());
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171 //VLOG(1) << "SQLite::Statement::Reset";
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172 sqlite3_reset(GetStatement());
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173 }
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174
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175 std::string Statement::GetOriginalSQLStatement()
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176 {
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177 return std::string(sqlite3_sql(GetStatement()));
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178 }
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179
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180
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181 void Statement::BindNull(int col)
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182 {
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183 CheckOk(sqlite3_bind_null(GetStatement(), col + 1),
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184 ErrorCode_BadParameterType);
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185 }
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186
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187 void Statement::BindBool(int col, bool val)
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188 {
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189 BindInt(col, val ? 1 : 0);
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190 }
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191
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192 void Statement::BindInt(int col, int val)
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193 {
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194 CheckOk(sqlite3_bind_int(GetStatement(), col + 1, val),
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195 ErrorCode_BadParameterType);
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196 }
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197
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198 void Statement::BindInt64(int col, int64_t val)
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199 {
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200 CheckOk(sqlite3_bind_int64(GetStatement(), col + 1, val),
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201 ErrorCode_BadParameterType);
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202 }
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203
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204 void Statement::BindDouble(int col, double val)
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205 {
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206 CheckOk(sqlite3_bind_double(GetStatement(), col + 1, val),
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207 ErrorCode_BadParameterType);
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208 }
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209
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210 void Statement::BindCString(int col, const char* val)
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211 {
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212 CheckOk(sqlite3_bind_text(GetStatement(), col + 1, val, -1, SQLITE_TRANSIENT),
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213 ErrorCode_BadParameterType);
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214 }
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215
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216 void Statement::BindString(int col, const std::string& val)
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217 {
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218 CheckOk(sqlite3_bind_text(GetStatement(),
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219 col + 1,
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220 val.data(),
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221 static_cast<int>(val.size()),
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222 SQLITE_TRANSIENT),
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223 ErrorCode_BadParameterType);
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224 }
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225
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226 /*void Statement::BindString16(int col, const string16& value)
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227 {
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228 BindString(col, UTF16ToUTF8(value));
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229 }*/
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230
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231 void Statement::BindBlob(int col, const void* val, int val_len)
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232 {
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233 CheckOk(sqlite3_bind_blob(GetStatement(), col + 1, val, val_len, SQLITE_TRANSIENT),
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234 ErrorCode_BadParameterType);
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235 }
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236
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237
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238 int Statement::ColumnCount() const
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239 {
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240 return sqlite3_column_count(GetStatement());
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241 }
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242
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243
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244 ColumnType Statement::GetColumnType(int col) const
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245 {
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246 // Verify that our enum matches sqlite's values.
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247 assert(COLUMN_TYPE_INTEGER == SQLITE_INTEGER);
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248 assert(COLUMN_TYPE_FLOAT == SQLITE_FLOAT);
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249 assert(COLUMN_TYPE_TEXT == SQLITE_TEXT);
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250 assert(COLUMN_TYPE_BLOB == SQLITE_BLOB);
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251 assert(COLUMN_TYPE_NULL == SQLITE_NULL);
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252
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253 return static_cast<ColumnType>(sqlite3_column_type(GetStatement(), col));
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254 }
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255
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256 ColumnType Statement::GetDeclaredColumnType(int col) const
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257 {
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258 std::string column_type(sqlite3_column_decltype(GetStatement(), col));
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259 std::transform(column_type.begin(), column_type.end(), column_type.begin(), tolower);
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260
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261 if (column_type == "integer")
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262 return COLUMN_TYPE_INTEGER;
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263 else if (column_type == "float")
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264 return COLUMN_TYPE_FLOAT;
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265 else if (column_type == "text")
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266 return COLUMN_TYPE_TEXT;
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267 else if (column_type == "blob")
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268 return COLUMN_TYPE_BLOB;
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269
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270 return COLUMN_TYPE_NULL;
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271 }
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272
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273 bool Statement::ColumnIsNull(int col) const
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274 {
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275 return sqlite3_column_type(GetStatement(), col) == SQLITE_NULL;
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276 }
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277
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278 bool Statement::ColumnBool(int col) const
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279 {
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280 return !!ColumnInt(col);
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281 }
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282
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283 int Statement::ColumnInt(int col) const
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284 {
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285 return sqlite3_column_int(GetStatement(), col);
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286 }
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287
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288 int64_t Statement::ColumnInt64(int col) const
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289 {
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290 return sqlite3_column_int64(GetStatement(), col);
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291 }
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292
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293 double Statement::ColumnDouble(int col) const
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294 {
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295 return sqlite3_column_double(GetStatement(), col);
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296 }
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297
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298 std::string Statement::ColumnString(int col) const
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299 {
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300 const char* str = reinterpret_cast<const char*>(
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301 sqlite3_column_text(GetStatement(), col));
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302 int len = sqlite3_column_bytes(GetStatement(), col);
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303
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304 std::string result;
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305 if (str && len > 0)
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306 result.assign(str, len);
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307 return result;
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308 }
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309
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310 /*string16 Statement::ColumnString16(int col) const
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311 {
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312 std::string s = ColumnString(col);
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313 return !s.empty() ? UTF8ToUTF16(s) : string16();
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314 }*/
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315
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316 int Statement::ColumnByteLength(int col) const
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317 {
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318 return sqlite3_column_bytes(GetStatement(), col);
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319 }
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320
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321 const void* Statement::ColumnBlob(int col) const
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322 {
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323 return sqlite3_column_blob(GetStatement(), col);
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324 }
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325
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326 bool Statement::ColumnBlobAsString(int col, std::string* blob)
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327 {
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328 const void* p = ColumnBlob(col);
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329 size_t len = ColumnByteLength(col);
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330 blob->resize(len);
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331 if (blob->size() != len) {
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332 return false;
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333 }
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334 blob->assign(reinterpret_cast<const char*>(p), len);
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335 return true;
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336 }
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337
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338 /*bool Statement::ColumnBlobAsString16(int col, string16* val) const
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339 {
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340 const void* data = ColumnBlob(col);
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341 size_t len = ColumnByteLength(col) / sizeof(char16);
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342 val->resize(len);
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343 if (val->size() != len)
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344 return false;
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345 val->assign(reinterpret_cast<const char16*>(data), len);
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346 return true;
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347 }*/
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348
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349 /*bool Statement::ColumnBlobAsVector(int col, std::vector<char>* val) const
0
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350 {
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351 val->clear();
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352
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353 const void* data = sqlite3_column_blob(GetStatement(), col);
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354 int len = sqlite3_column_bytes(GetStatement(), col);
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355 if (data && len > 0) {
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356 val->resize(len);
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357 memcpy(&(*val)[0], data, len);
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358 }
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359 return true;
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360 }*/
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361
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362 /*bool Statement::ColumnBlobAsVector(
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363 int col,
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364 std::vector<unsigned char>* val) const
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365 {
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366 return ColumnBlobAsVector(col, reinterpret_cast< std::vector<char>* >(val));
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367 }*/
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368
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369 }
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370 }