Total Complexity | 51 |
Total Lines | 205 |
Duplicated Lines | 0 % |
Changes | 1 | ||
Bugs | 0 | Features | 0 |
Complex classes like db_manager often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use db_manager, and based on these observations, apply Extract Interface, too.
1 | <?php |
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30 | class db_manager |
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31 | { |
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32 | public $s_tables = array(); |
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33 | public $f_tables = array(); |
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34 | public $db; |
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35 | |||
36 | public function __construct() |
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37 | { |
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38 | $this->db = XoopsDatabaseFactory::getDatabase(); |
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39 | $this->db->setPrefix(XOOPS_DB_PREFIX); |
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40 | } |
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41 | |||
42 | public function isConnectable() |
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43 | { |
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44 | return ($this->db->connect(false) != false) ? true : false; |
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45 | } |
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46 | |||
47 | public function dbExists() |
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48 | { |
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49 | return ($this->db->connect() != false) ? true : false; |
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50 | } |
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51 | |||
52 | public function createDB() |
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53 | { |
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54 | $this->db->connect(false); |
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55 | |||
56 | $result = $this->db->query("CREATE DATABASE " . XOOPS_DB_NAME); |
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57 | |||
58 | return ($result != false) ? true : false; |
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59 | } |
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60 | |||
61 | public function queryFromFile($sql_file_path) |
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62 | { |
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63 | $tables = array(); |
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64 | |||
65 | if (!file_exists($sql_file_path)) { |
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66 | return false; |
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67 | } |
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68 | $sql_query = trim(fread(fopen($sql_file_path, 'r'), filesize($sql_file_path))); |
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69 | SqlUtility::splitMySqlFile($pieces, $sql_query); |
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70 | $this->db->connect(); |
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71 | foreach ($pieces as $piece) { |
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72 | $piece = trim($piece); |
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73 | // [0] contains the prefixed query |
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74 | // [4] contains unprefixed table name |
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75 | $prefixed_query = SqlUtility::prefixQuery($piece, $this->db->prefix()); |
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76 | if ($prefixed_query != false) { |
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77 | $table = $this->db->prefix($prefixed_query[4]); |
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78 | if ($prefixed_query[1] == 'CREATE TABLE') { |
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79 | if ($this->db->query($prefixed_query[0]) != false) { |
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80 | if (!isset($this->s_tables['create'][$table])) { |
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81 | $this->s_tables['create'][$table] = 1; |
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82 | } |
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83 | } else { |
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84 | if (!isset($this->f_tables['create'][$table])) { |
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85 | $this->f_tables['create'][$table] = 1; |
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86 | } |
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87 | } |
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88 | } elseif ($prefixed_query[1] == 'INSERT INTO') { |
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89 | if ($this->db->query($prefixed_query[0]) != false) { |
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90 | if (!isset($this->s_tables['insert'][$table])) { |
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91 | $this->s_tables['insert'][$table] = 1; |
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92 | } else { |
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93 | $this->s_tables['insert'][$table]++; |
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94 | } |
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95 | } else { |
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96 | if (!isset($this->f_tables['insert'][$table])) { |
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97 | $this->f_tables['insert'][$table] = 1; |
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98 | } else { |
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99 | $this->f_tables['insert'][$table]++; |
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100 | } |
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101 | } |
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102 | } elseif ($prefixed_query[1] == 'ALTER TABLE') { |
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103 | if ($this->db->query($prefixed_query[0]) != false) { |
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104 | if (!isset($this->s_tables['alter'][$table])) { |
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105 | $this->s_tables['alter'][$table] = 1; |
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106 | } |
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107 | } else { |
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108 | if (!isset($this->s_tables['alter'][$table])) { |
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109 | $this->f_tables['alter'][$table] = 1; |
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110 | } |
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111 | } |
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112 | } elseif ($prefixed_query[1] == 'DROP TABLE') { |
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113 | if ($this->db->query('DROP TABLE '.$table) != false) { |
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114 | if (!isset($this->s_tables['drop'][$table])) { |
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115 | $this->s_tables['drop'][$table] = 1; |
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116 | } |
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117 | } else { |
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118 | if (!isset($this->s_tables['drop'][$table])) { |
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119 | $this->f_tables['drop'][$table] = 1; |
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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 | } |
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125 | return true; |
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126 | } |
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127 | |||
128 | public $successStrings = array( |
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129 | 'create' => 'create', |
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130 | 'insert' => 'insert', |
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131 | 'alter' => 'alter', |
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132 | 'drop' => 'drop', |
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133 | ); |
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134 | public $failureStrings = array( |
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135 | 'create' => 'fail', |
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136 | 'insert' => 'fail', |
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137 | 'alter' => 'error', |
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138 | 'drop' => 'error', |
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139 | ); |
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140 | |||
141 | |||
142 | public function report() |
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143 | { |
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144 | $commands = array( 'create', 'insert', 'alter', 'drop' ); |
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145 | $content = '<ul class="log">'; |
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146 | foreach ($commands as $cmd) { |
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147 | if (!@empty($this->s_tables[$cmd])) { |
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148 | foreach ($this->s_tables[$cmd] as $key => $val) { |
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149 | $content .= '<li class="success">'; |
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150 | $content .= ($cmd != 'insert') ? sprintf($this->successStrings[$cmd], $key) : sprintf($this->successStrings[$cmd], $val, $key); |
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151 | $content .= "</li>\n"; |
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152 | } |
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153 | } |
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154 | } |
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155 | foreach ($commands as $cmd) { |
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156 | if (!@empty($this->f_tables[$cmd])) { |
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157 | foreach ($this->f_tables[$cmd] as $key => $val) { |
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158 | $content .= '<li class="failure">'; |
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159 | $content .= ($cmd != 'insert') ? sprintf($this->failureStrings[$cmd], $key) : sprintf($this->failureStrings[$cmd], $val, $key); |
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160 | $content .= "</li>\n"; |
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161 | } |
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162 | } |
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163 | } |
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164 | $content .= '</ul>'; |
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165 | return $content; |
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166 | } |
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167 | |||
168 | public function query($sql) |
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169 | { |
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170 | $this->db->connect(); |
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171 | return $this->db->query($sql); |
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172 | } |
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173 | |||
174 | public function prefix($table) |
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175 | { |
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176 | $this->db->connect(); |
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177 | return $this->db->prefix($table); |
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178 | } |
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179 | |||
180 | public function fetchArray($ret) |
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181 | { |
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182 | $this->db->connect(); |
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183 | return $this->db->fetchArray($ret); |
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184 | } |
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185 | |||
186 | public function insert($table, $query) |
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205 | } |
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206 | } |
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207 | |||
208 | public function isError() |
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209 | { |
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210 | return (isset($this->f_tables)) ? true : false; |
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211 | } |
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212 | |||
213 | public function deleteTables($tables) |
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223 | } |
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224 | |||
225 | public function tableExists($table) |
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226 | { |
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227 | $table = trim($table); |
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235 | } |
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236 | } |
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237 |
This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces.
This is most likely a typographical error or the method has been renamed.