annotate Core/SQLite/StatementReference.cpp @ 1489:1389834e130f

basic logger
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 04 Aug 2015 12:22:08 +0200
parents f967bdf8534e
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 "StatementReference.h"
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43 #include "OrthancSQLiteException.h"
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44
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45 #if ORTHANC_SQLITE_STANDALONE != 1
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46 #include "../Logging.h"
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47 #endif
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48
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49 #include <string>
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50 #include <cassert>
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51 #include "sqlite3.h"
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52
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53 namespace Orthanc
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54 {
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55 namespace SQLite
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56 {
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57 bool StatementReference::IsRoot() const
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58 {
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59 return root_ == NULL;
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60 }
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61
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62 StatementReference::StatementReference()
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63 {
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64 root_ = NULL;
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65 refCount_ = 0;
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66 statement_ = NULL;
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67 assert(IsRoot());
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68 }
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69
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70 StatementReference::StatementReference(sqlite3* database,
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71 const char* sql)
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72 {
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73 if (database == NULL || sql == NULL)
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74 {
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75 throw OrthancSQLiteException("Parameter out of range");
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76 }
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78 root_ = NULL;
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79 refCount_ = 0;
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80
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81 int error = sqlite3_prepare_v2(database, sql, -1, &statement_, NULL);
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82 if (error != SQLITE_OK)
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83 {
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84 throw OrthancSQLiteException("SQLite: " + std::string(sqlite3_errmsg(database)));
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85 }
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86
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87 assert(IsRoot());
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88 }
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89
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90 StatementReference::StatementReference(StatementReference& other)
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91 {
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92 refCount_ = 0;
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93
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94 if (other.IsRoot())
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95 {
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96 root_ = &other;
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97 }
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98 else
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99 {
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100 root_ = other.root_;
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101 }
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102
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103 root_->refCount_++;
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104 statement_ = root_->statement_;
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105
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106 assert(!IsRoot());
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107 }
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108
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109 StatementReference::~StatementReference()
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110 {
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111 if (IsRoot())
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112 {
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113 if (refCount_ != 0)
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114 {
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115 // There remain references to this object. We cannot throw
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116 // an exception because:
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117 // http://www.parashift.com/c++-faq/dtors-shouldnt-throw.html
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118
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119 #if ORTHANC_SQLITE_STANDALONE != 1
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120 LOG(ERROR) << "Bad value of the reference counter";
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121 #endif
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122 }
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123 else if (statement_ != NULL)
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124 {
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125 sqlite3_finalize(statement_);
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126 }
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127 }
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128 else
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129 {
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130 if (root_->refCount_ == 0)
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131 {
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132 // There remain references to this object. We cannot throw
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133 // an exception because:
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134 // http://www.parashift.com/c++-faq/dtors-shouldnt-throw.html
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135
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136 #if ORTHANC_SQLITE_STANDALONE != 1
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137 LOG(ERROR) << "Bad value of the reference counter";
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138 #endif
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139 }
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140 else
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141 {
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142 root_->refCount_--;
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143 }
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144 }
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145 }
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146
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147 uint32_t StatementReference::GetReferenceCount() const
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148 {
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149 return refCount_;
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150 }
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151 }
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152 }