Total Complexity | 59 |
Total Lines | 272 |
Duplicated Lines | 31.25 % |
Changes | 0 |
Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
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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33 | class db_manager |
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34 | { |
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35 | public $s_tables = array(); |
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36 | public $f_tables = array(); |
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37 | public $db; |
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38 | |||
39 | /** |
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40 | * db_manager constructor. |
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41 | */ |
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42 | public function __construct() |
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43 | { |
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44 | $this->db = XoopsDatabaseFactory::getDatabase(); |
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45 | $this->db->setPrefix(XOOPS_DB_PREFIX); |
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46 | $this->db->setLogger(XoopsLogger::instance()); |
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47 | } |
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48 | |||
49 | /** |
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50 | * @return bool |
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51 | */ |
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52 | public function isConnectable() |
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53 | { |
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54 | return ($this->db->connect(false) !== false) ? true : false; |
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55 | } |
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56 | |||
57 | /** |
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58 | * @return bool |
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59 | */ |
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60 | public function dbExists() |
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61 | { |
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62 | return ($this->db->connect() !== false) ? true : false; |
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63 | } |
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64 | |||
65 | /** |
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66 | * @return bool |
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67 | */ |
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68 | public function createDB() |
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69 | { |
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70 | $this->db->connect(false); |
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71 | |||
72 | $result = $this->db->query('CREATE DATABASE ' . XOOPS_DB_NAME); |
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73 | |||
74 | return ($result !== false) ? true : false; |
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75 | } |
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76 | |||
77 | /** |
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78 | * @param $sql_file_path |
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79 | * @return bool |
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80 | */ |
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81 | public function queryFromFile($sql_file_path) |
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82 | { |
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83 | global $pieces; |
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84 | $tables = array(); |
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85 | |||
86 | if (!file_exists($sql_file_path)) { |
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87 | return false; |
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88 | } |
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89 | $sql_query = trim(fread(fopen($sql_file_path, 'r'), filesize($sql_file_path))); |
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90 | SqlUtility::splitMySqlFile($pieces, $sql_query); |
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91 | $this->db->connect(); |
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92 | foreach ($pieces as $piece) { |
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93 | $piece = trim($piece); |
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94 | // [0] contains the prefixed query |
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95 | // [4] contains unprefixed table name |
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96 | $prefixed_query = SqlUtility::prefixQuery($piece, $this->db->prefix()); |
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97 | if ($prefixed_query !== false) { |
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98 | $table = $this->db->prefix($prefixed_query[4]); |
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99 | if ($prefixed_query[1] === 'CREATE TABLE') { |
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100 | View Code Duplication | if ($this->db->query($prefixed_query[0]) !== false) { |
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101 | if (!isset($this->s_tables['create'][$table])) { |
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102 | $this->s_tables['create'][$table] = 1; |
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103 | } |
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104 | } else { |
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105 | if (!isset($this->f_tables['create'][$table])) { |
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106 | $this->f_tables['create'][$table] = 1; |
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107 | } |
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108 | } |
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109 | } elseif ($prefixed_query[1] === 'INSERT INTO') { |
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110 | if ($this->db->query($prefixed_query[0]) !== false) { |
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111 | View Code Duplication | if (!isset($this->s_tables['insert'][$table])) { |
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112 | $this->s_tables['insert'][$table] = 1; |
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113 | } else { |
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114 | $this->s_tables['insert'][$table]++; |
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115 | } |
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116 | View Code Duplication | } else { |
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117 | if (!isset($this->f_tables['insert'][$table])) { |
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118 | $this->f_tables['insert'][$table] = 1; |
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119 | } else { |
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120 | $this->f_tables['insert'][$table]++; |
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121 | } |
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122 | } |
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123 | View Code Duplication | } elseif ($prefixed_query[1] === 'ALTER TABLE') { |
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124 | if ($this->db->query($prefixed_query[0]) !== false) { |
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125 | if (!isset($this->s_tables['alter'][$table])) { |
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126 | $this->s_tables['alter'][$table] = 1; |
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127 | } |
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128 | } else { |
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129 | if (!isset($this->s_tables['alter'][$table])) { |
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130 | $this->f_tables['alter'][$table] = 1; |
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131 | } |
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132 | } |
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133 | } elseif ($prefixed_query[1] === 'DROP TABLE') { |
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134 | if ($this->db->query('DROP TABLE ' . $table) !== false) { |
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135 | if (!isset($this->s_tables['drop'][$table])) { |
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136 | $this->s_tables['drop'][$table] = 1; |
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137 | } |
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138 | } else { |
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139 | if (!isset($this->s_tables['drop'][$table])) { |
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140 | $this->f_tables['drop'][$table] = 1; |
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141 | } |
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142 | } |
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143 | } |
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144 | } |
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145 | } |
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146 | |||
147 | return true; |
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148 | } |
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149 | |||
150 | /** |
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151 | * @return string |
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152 | */ |
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153 | public function report() |
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154 | { |
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155 | $content = "<table align='center'><tr><td align='left'>\n"; |
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156 | View Code Duplication | if (isset($this->s_tables['create'])) { |
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157 | foreach ($this->s_tables['create'] as $key => $val) { |
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158 | $content .= sprintf(_INSTALL_L45, "<b>$key</b>") . "<br>\n"; |
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159 | } |
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160 | } |
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161 | View Code Duplication | if (isset($this->s_tables['insert'])) { |
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162 | foreach ($this->s_tables['insert'] as $key => $val) { |
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163 | $content .= sprintf(_INSTALL_L119, $val, "<b>$key</b>") . "<br>\n"; |
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164 | } |
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165 | } |
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166 | View Code Duplication | if (isset($this->s_tables['alter'])) { |
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167 | foreach ($this->s_tables['alter'] as $key => $val) { |
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168 | $content .= sprintf(_INSTALL_L133, "<b>$key</b>") . "<br>\n"; |
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169 | } |
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170 | } |
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171 | View Code Duplication | if (isset($this->s_tables['drop'])) { |
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172 | foreach ($this->s_tables['drop'] as $key => $val) { |
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173 | $content .= sprintf(_INSTALL_L163, "<b>$key</b>") . "<br>\n"; |
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174 | } |
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175 | } |
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176 | $content .= "<br>\n"; |
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177 | View Code Duplication | if (isset($this->f_tables['create'])) { |
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178 | foreach ($this->f_tables['create'] as $key => $val) { |
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179 | $content .= sprintf(_INSTALL_L118, "<b>$key</b>") . "<br>\n"; |
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180 | } |
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181 | } |
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182 | View Code Duplication | if (isset($this->f_tables['insert'])) { |
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183 | foreach ($this->f_tables['insert'] as $key => $val) { |
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184 | $content .= sprintf(_INSTALL_L120, $val, "<b>$key</b>") . "<br>\n"; |
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185 | } |
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186 | } |
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187 | View Code Duplication | if (isset($this->f_tables['alter'])) { |
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188 | foreach ($this->f_tables['alter'] as $key => $val) { |
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189 | $content .= sprintf(_INSTALL_L134, "<b>$key</b>") . "<br>\n"; |
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190 | } |
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191 | } |
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192 | View Code Duplication | if (isset($this->f_tables['drop'])) { |
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193 | foreach ($this->f_tables['drop'] as $key => $val) { |
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194 | $content .= sprintf(_INSTALL_L164, "<b>$key</b>") . "<br>\n"; |
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195 | } |
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196 | } |
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197 | $content .= "</td></tr></table>\n"; |
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198 | |||
199 | return $content; |
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200 | } |
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201 | |||
202 | /** |
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203 | * @param $sql |
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204 | * @return mixed |
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205 | */ |
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206 | public function query($sql) |
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207 | { |
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208 | $this->db->connect(); |
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209 | |||
210 | return $this->db->query($sql); |
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211 | } |
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212 | |||
213 | /** |
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214 | * @param $table |
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215 | * @return mixed |
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216 | */ |
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217 | public function prefix($table) |
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218 | { |
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219 | $this->db->connect(); |
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220 | |||
221 | return $this->db->prefix($table); |
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222 | } |
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223 | |||
224 | /** |
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225 | * @param $ret |
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226 | * @return mixed |
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227 | */ |
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228 | public function fetchArray($ret) |
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229 | { |
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230 | $this->db->connect(); |
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231 | |||
232 | return $this->db->fetchArray($ret); |
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233 | } |
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234 | |||
235 | /** |
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236 | * @param $table |
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237 | * @param $query |
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238 | * @return bool |
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239 | */ |
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240 | public function insert($table, $query) |
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261 | } |
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262 | } |
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263 | |||
264 | /** |
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265 | * @return bool |
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266 | */ |
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267 | public function isError() |
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268 | { |
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269 | return isset($this->f_tables) ? true : false; |
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270 | } |
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271 | |||
272 | /** |
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273 | * @param $tables |
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274 | * @return array |
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275 | */ |
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276 | public function deleteTables($tables) |
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288 | } |
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289 | |||
290 | /** |
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291 | * @param $table |
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292 | * @return bool |
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293 | */ |
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294 | public function tableExists($table) |
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307 |