Complex classes like Zend2 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. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
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 Zend2, and based on these observations, apply Extract Interface, too.
1 | <?php |
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12 | class Zend2 extends AdapterAbstract implements AdapterInterface |
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13 | { |
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14 | private $dbAdapter; |
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15 | |||
16 | 111 | public function __construct(Options $options, DbAdapter $dbAdapter) |
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17 | { |
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18 | 111 | $this->setOptions($options); |
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19 | 111 | $this->setDbAdapter($dbAdapter); |
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20 | 111 | } |
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21 | |||
22 | /** |
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23 | * @param DbAdapter $dbAdapter |
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24 | */ |
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25 | 111 | protected function setDbAdapter(DbAdapter $dbAdapter): void |
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26 | { |
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27 | 111 | $this->dbAdapter = $dbAdapter; |
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28 | 111 | } |
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29 | |||
30 | /** |
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31 | * @return DbAdapter |
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32 | */ |
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33 | 103 | protected function getDbAdapter(): DbAdapter |
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34 | { |
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35 | 103 | return $this->dbAdapter; |
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36 | } |
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37 | |||
38 | /** |
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39 | * Return base db select without any join, etc. |
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40 | * |
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41 | * @return Db\Sql\Select |
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42 | */ |
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43 | 84 | public function getBlankDbSelect(): Db\Sql\Select |
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44 | { |
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45 | 84 | return new Db\Sql\Select($this->getOptions()->getTableName()); |
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46 | } |
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47 | |||
48 | /** |
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49 | * Return default db select. |
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50 | * |
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51 | * @return Db\Sql\Select |
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52 | */ |
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53 | 28 | public function getDefaultDbSelect() |
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54 | { |
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55 | 28 | return $this->getDbSelectBuilder()(); |
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56 | } |
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57 | |||
58 | /** |
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59 | * {@inheritdoc} |
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60 | */ |
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61 | 31 | public function lockTree(): void |
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62 | { |
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63 | 31 | $options = $this->getOptions(); |
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64 | |||
65 | 31 | $dbAdapter = $this->getDbAdapter(); |
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66 | |||
67 | 31 | $select = $this->getBlankDbSelect(); |
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68 | 31 | $select->columns(array( |
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69 | 31 | 'i' => $options->getIdColumnName(), |
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70 | )); |
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71 | |||
72 | 31 | $sql = $select->getSqlString($dbAdapter->getPlatform()).' FOR UPDATE'; |
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73 | |||
74 | 31 | $dbAdapter->query($sql, DbAdapter::QUERY_MODE_EXECUTE); |
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75 | 31 | } |
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76 | |||
77 | /** |
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78 | * {@inheritdoc} |
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79 | */ |
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80 | 31 | public function beginTransaction(): void |
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81 | { |
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82 | 31 | $this->getDbAdapter() |
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83 | 31 | ->getDriver() |
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84 | 31 | ->getConnection() |
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85 | 31 | ->beginTransaction(); |
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86 | 31 | } |
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87 | |||
88 | /** |
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89 | * {@inheritdoc} |
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90 | */ |
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91 | 16 | public function commitTransaction(): void |
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92 | { |
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93 | 16 | $this->getDbAdapter() |
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94 | 16 | ->getDriver() |
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95 | 16 | ->getConnection() |
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96 | 16 | ->commit(); |
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97 | 16 | } |
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98 | |||
99 | /** |
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100 | * {@inheritdoc} |
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101 | */ |
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102 | 16 | public function rollbackTransaction(): void |
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103 | { |
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104 | 16 | $this->getDbAdapter() |
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105 | 16 | ->getDriver() |
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106 | 16 | ->getConnection() |
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107 | 16 | ->rollback(); |
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108 | 16 | } |
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109 | |||
110 | /** |
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111 | * {@inheritdoc} |
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112 | */ |
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113 | 5 | public function update($nodeId, array $data): void |
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114 | { |
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115 | 5 | $options = $this->getOptions(); |
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116 | |||
117 | 5 | $dbAdapter = $this->getDbAdapter(); |
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118 | |||
119 | 5 | $data = $this->cleanData($data); |
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120 | |||
121 | 5 | $update = new Db\Sql\Update($options->getTableName()); |
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122 | 5 | $update->set($data) |
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123 | 5 | ->where(array( |
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124 | 5 | $options->getIdColumnName() => $nodeId, |
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125 | )); |
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126 | |||
127 | 5 | $dbAdapter->query($update->getSqlString($dbAdapter->getPlatform()), |
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128 | 5 | DbAdapter::QUERY_MODE_EXECUTE); |
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129 | 5 | } |
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130 | |||
131 | /** |
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132 | * {@inheritdoc} |
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133 | */ |
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134 | 12 | public function insert(NodeInfo $nodeInfo, array $data) |
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135 | { |
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136 | 12 | $options = $this->getOptions(); |
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137 | |||
138 | 12 | $dbAdapter = $this->getDbAdapter(); |
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139 | |||
140 | 12 | $data[$options->getParentIdColumnName()] = $nodeInfo->getParentId(); |
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141 | 12 | $data[$options->getLevelColumnName()] = $nodeInfo->getLevel(); |
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142 | 12 | $data[$options->getLeftColumnName()] = $nodeInfo->getLeft(); |
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143 | 12 | $data[$options->getRightColumnName()] = $nodeInfo->getRight(); |
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144 | |||
145 | 12 | if ($options->getScopeColumnName()) { |
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146 | 4 | $data[$options->getScopeColumnName()] = $nodeInfo->getScope(); |
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147 | } |
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148 | |||
149 | 12 | $insert = new Db\Sql\Insert($options->getTableName()); |
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150 | 12 | $insert->values($data); |
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151 | 12 | $dbAdapter->query($insert->getSqlString($dbAdapter->getPlatform()), |
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152 | 12 | DbAdapter::QUERY_MODE_EXECUTE); |
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153 | |||
154 | 12 | $lastGeneratedValue = $dbAdapter->getDriver() |
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155 | 12 | ->getLastGeneratedValue($options->getSequenceName()); |
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156 | |||
157 | 12 | return $lastGeneratedValue; |
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158 | } |
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159 | |||
160 | /** |
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161 | * {@inheritdoc} |
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162 | */ |
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163 | 4 | public function delete($nodeId): void |
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164 | { |
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165 | 4 | $options = $this->getOptions(); |
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166 | |||
167 | 4 | $dbAdapter = $this->getDbAdapter(); |
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168 | |||
169 | 4 | $delete = new Db\Sql\Delete($options->getTableName()); |
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170 | 4 | $delete->where |
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171 | 4 | ->equalTo($options->getIdColumnName(), $nodeId); |
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172 | |||
173 | 4 | $dbAdapter->query($delete->getSqlString($dbAdapter->getPlatform()), |
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174 | 4 | DbAdapter::QUERY_MODE_EXECUTE); |
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175 | 4 | } |
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176 | |||
177 | /** |
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178 | * {@inheritdoc} |
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179 | */ |
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180 | 14 | public function moveLeftIndexes($fromIndex, $shift, $scope = null): void |
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181 | { |
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182 | 14 | $options = $this->getOptions(); |
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183 | |||
184 | 14 | if (0 == $shift) { |
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185 | return; |
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186 | } |
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187 | |||
188 | 14 | $dbAdapter = $this->getDbAdapter(); |
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189 | 14 | $dbPlatform = $dbAdapter->getPlatform(); |
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190 | |||
191 | 14 | $sql = 'UPDATE '.$dbPlatform->quoteIdentifier($options->getTableName()) |
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192 | 14 | .' SET ' |
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193 | 14 | .$dbPlatform->quoteIdentifier($options->getLeftColumnName()).' = ' |
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194 | 14 | .$dbPlatform->quoteIdentifier($options->getLeftColumnName()).' + :shift' |
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195 | 14 | .' WHERE ' |
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196 | 14 | .$dbPlatform->quoteIdentifier($options->getLeftColumnName()).' > :fromIndex'; |
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197 | |||
198 | 14 | if ($options->getScopeColumnName()) { |
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199 | 4 | $sql .= ' AND '.$dbPlatform->quoteIdentifier($options->getScopeColumnName()).' = '.$dbPlatform->quoteValue($scope); |
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200 | } |
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201 | |||
202 | $binds = array( |
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203 | 14 | ':shift' => $shift, |
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204 | 14 | ':fromIndex' => $fromIndex, |
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205 | ); |
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206 | |||
207 | 14 | $dbAdapter->query($sql) |
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208 | 14 | ->execute($binds); |
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209 | 14 | } |
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210 | |||
211 | /** |
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212 | * {@inheritdoc} |
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213 | */ |
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214 | 14 | public function moveRightIndexes($fromIndex, $shift, $scope = null): void |
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215 | { |
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216 | 14 | $options = $this->getOptions(); |
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217 | |||
218 | 14 | if (0 == $shift) { |
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219 | return; |
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220 | } |
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221 | |||
222 | 14 | $dbAdapter = $this->getDbAdapter(); |
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223 | 14 | $dbPlatform = $dbAdapter->getPlatform(); |
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224 | |||
225 | 14 | $sql = 'UPDATE '.$dbPlatform->quoteIdentifier($options->getTableName()) |
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226 | 14 | .' SET ' |
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227 | 14 | .$dbPlatform->quoteIdentifier($options->getRightColumnName()).' = ' |
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228 | 14 | .$dbPlatform->quoteIdentifier($options->getRightColumnName()).' + :shift' |
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229 | 14 | .' WHERE ' |
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230 | 14 | .$dbPlatform->quoteIdentifier($options->getRightColumnName()).' > :fromIndex'; |
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231 | |||
232 | 14 | if ($options->getScopeColumnName()) { |
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233 | 4 | $sql .= ' AND '.$dbPlatform->quoteIdentifier($options->getScopeColumnName()).' = '.$dbPlatform->quoteValue($scope); |
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234 | } |
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235 | |||
236 | $binds = array( |
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237 | 14 | ':shift' => $shift, |
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238 | 14 | ':fromIndex' => $fromIndex, |
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239 | ); |
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240 | |||
241 | 14 | $dbAdapter->query($sql) |
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242 | 14 | ->execute($binds); |
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243 | 14 | } |
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244 | |||
245 | /** |
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246 | * {@inheritdoc} |
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247 | */ |
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248 | 5 | public function updateParentId($nodeId, $newParentId): void |
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249 | { |
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250 | 5 | $options = $this->getOptions(); |
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251 | |||
252 | 5 | $dbAdapter = $this->getDbAdapter(); |
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253 | |||
254 | 5 | $update = new Db\Sql\Update($options->getTableName()); |
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255 | 5 | $update->set(array( |
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256 | 5 | $options->getParentIdColumnName() => $newParentId, |
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257 | )) |
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258 | 5 | ->where(array( |
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259 | 5 | $options->getIdColumnName() => $nodeId, |
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260 | )); |
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261 | |||
262 | 5 | $dbAdapter->query($update->getSqlString($dbAdapter->getPlatform()), |
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263 | 5 | DbAdapter::QUERY_MODE_EXECUTE); |
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264 | 5 | } |
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265 | |||
266 | /** |
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267 | * {@inheritdoc} |
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268 | */ |
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269 | 6 | public function updateLevels(int $leftIndexFrom, int $rightIndexTo, int $shift, $scope = null): void |
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270 | { |
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271 | 6 | $options = $this->getOptions(); |
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272 | |||
273 | 6 | if (0 == $shift) { |
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274 | return; |
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275 | } |
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276 | |||
277 | 6 | $dbAdapter = $this->getDbAdapter(); |
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278 | 6 | $dbPlatform = $dbAdapter->getPlatform(); |
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279 | |||
280 | 6 | $sql = 'UPDATE '.$dbPlatform->quoteIdentifier($options->getTableName()) |
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281 | 6 | .' SET ' |
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282 | 6 | .$dbPlatform->quoteIdentifier($options->getLevelColumnName()).' = ' |
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283 | 6 | .$dbPlatform->quoteIdentifier($options->getLevelColumnName()).' + :shift' |
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284 | 6 | .' WHERE ' |
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285 | 6 | .$dbPlatform->quoteIdentifier($options->getLeftColumnName()).' >= :leftFrom' |
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286 | 6 | .' AND '.$dbPlatform->quoteIdentifier($options->getRightColumnName()).' <= :rightTo'; |
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287 | |||
288 | 6 | if ($options->getScopeColumnName()) { |
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289 | 1 | $sql .= ' AND '.$dbPlatform->quoteIdentifier($options->getScopeColumnName()).' = '.$dbPlatform->quoteValue($scope); |
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290 | } |
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291 | |||
292 | $binds = array( |
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293 | 6 | ':shift' => $shift, |
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294 | 6 | ':leftFrom' => $leftIndexFrom, |
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295 | 6 | ':rightTo' => $rightIndexTo, |
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296 | ); |
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297 | |||
298 | 6 | $dbAdapter->query($sql) |
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299 | 6 | ->execute($binds); |
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300 | 6 | } |
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301 | |||
302 | /** |
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303 | * {@inheritdoc} |
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304 | */ |
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305 | 7 | public function moveBranch(int $leftIndexFrom, int $rightIndexTo, int $shift, $scope = null): void |
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306 | { |
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307 | 7 | if (0 == $shift) { |
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308 | return; |
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309 | } |
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310 | |||
311 | 7 | $options = $this->getOptions(); |
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312 | |||
313 | 7 | $dbAdapter = $this->getDbAdapter(); |
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314 | 7 | $dbPlatform = $dbAdapter->getPlatform(); |
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315 | |||
316 | 7 | $sql = 'UPDATE '.$dbPlatform->quoteIdentifier($options->getTableName()) |
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317 | 7 | .' SET ' |
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318 | 7 | .$dbPlatform->quoteIdentifier($options->getLeftColumnName()).' = ' |
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319 | 7 | .$dbPlatform->quoteIdentifier($options->getLeftColumnName()).' + :shift, ' |
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320 | 7 | .$dbPlatform->quoteIdentifier($options->getRightColumnName()).' = ' |
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321 | 7 | .$dbPlatform->quoteIdentifier($options->getRightColumnName()).' + :shift' |
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322 | 7 | .' WHERE ' |
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323 | 7 | .$dbPlatform->quoteIdentifier($options->getLeftColumnName()).' >= :leftFrom' |
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324 | 7 | .' AND '.$dbPlatform->quoteIdentifier($options->getRightColumnName()).' <= :rightTo'; |
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325 | |||
326 | 7 | if ($options->getScopeColumnName()) { |
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327 | 2 | $sql .= ' AND '.$dbPlatform->quoteIdentifier($options->getScopeColumnName()).' = '.$dbPlatform->quoteValue($scope); |
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328 | } |
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329 | |||
330 | $binds = array( |
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331 | 7 | ':shift' => $shift, |
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332 | 7 | ':leftFrom' => $leftIndexFrom, |
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333 | 7 | ':rightTo' => $rightIndexTo, |
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334 | ); |
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335 | |||
336 | 7 | $dbAdapter->query($sql) |
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337 | 7 | ->execute($binds); |
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338 | 7 | } |
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339 | |||
340 | /** |
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341 | * {@inheritdoc} |
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342 | */ |
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343 | 12 | public function getRoots($scope = null): array |
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344 | { |
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345 | 12 | $options = $this->getOptions(); |
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346 | |||
347 | 12 | $dbAdapter = $this->getDbAdapter(); |
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348 | |||
349 | 12 | $select = $this->getBlankDbSelect(); |
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350 | 12 | $select->where |
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351 | 12 | ->isNull($options->getParentIdColumnName(true)); |
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352 | 12 | $select->order($options->getIdColumnName(true)); |
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353 | |||
354 | 12 | if (null != $scope && $options->getScopeColumnName()) { |
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355 | 3 | $select->where |
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356 | 3 | ->equalTo($options->getScopeColumnName(true), $scope); |
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357 | } |
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358 | |||
359 | 12 | $result = $dbAdapter->query($select->getSqlString($dbAdapter->getPlatform()), |
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360 | 12 | DbAdapter::QUERY_MODE_EXECUTE); |
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361 | |||
362 | 12 | return $result->toArray(); |
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363 | } |
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364 | |||
365 | /** |
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366 | * {@inheritdoc} |
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367 | */ |
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368 | 9 | public function getRoot($scope = null): array |
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369 | { |
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370 | 9 | $roots = $this->getRoots($scope); |
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371 | |||
372 | 9 | return (0 < count($roots)) ? $roots[0] : array(); |
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373 | } |
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374 | |||
375 | /** |
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376 | * {@inheritdoc} |
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377 | */ |
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378 | 5 | public function getNode($nodeId): ?array |
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379 | { |
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380 | 5 | $options = $this->getOptions(); |
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381 | |||
382 | 5 | $nodeId = (int) $nodeId; |
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383 | |||
384 | 5 | $dbAdapter = $this->getDbAdapter(); |
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385 | |||
386 | 5 | $select = $this->getDefaultDbSelect() |
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387 | 5 | ->where(array($options->getIdColumnName(true) => $nodeId)); |
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388 | |||
389 | 5 | $result = $dbAdapter->query($select->getSqlString($dbAdapter->getPlatform()), |
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390 | 5 | DbAdapter::QUERY_MODE_EXECUTE); |
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391 | |||
392 | 5 | $array = $result->toArray(); |
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393 | |||
394 | 5 | return (0 < count($array)) ? $array[0] : null; |
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395 | } |
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396 | |||
397 | /** |
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398 | * {@inheritdoc} |
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399 | */ |
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400 | 60 | public function getNodeInfo($nodeId): ?NodeInfo |
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401 | { |
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402 | 60 | $options = $this->getOptions(); |
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403 | |||
404 | 60 | $nodeId = (int) $nodeId; |
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405 | |||
406 | 60 | $dbAdapter = $this->getDbAdapter(); |
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407 | |||
408 | 60 | $select = $this->getBlankDbSelect() |
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409 | 60 | ->where(array($options->getIdColumnName(true) => $nodeId)); |
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410 | |||
411 | 60 | $result = $dbAdapter->query($select->getSqlString($dbAdapter->getPlatform()), |
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412 | 60 | DbAdapter::QUERY_MODE_EXECUTE); |
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413 | |||
414 | 60 | $array = $result->toArray(); |
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415 | |||
416 | 60 | $result = ($array) ? $this->_buildNodeInfoObject($array[0]) : null; |
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417 | |||
418 | 60 | return $result; |
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419 | } |
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420 | |||
421 | /** |
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422 | * {@inheritdoc} |
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423 | */ |
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424 | 7 | public function getChildrenNodeInfo($parentNodeId): array |
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425 | { |
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426 | 7 | $dbAdapter = $this->getDbAdapter(); |
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427 | 7 | $options = $this->getOptions(); |
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428 | |||
429 | $columns = array( |
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430 | 7 | $options->getIdColumnName(), |
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431 | 7 | $options->getLeftColumnName(), |
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432 | 7 | $options->getRightColumnName(), |
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433 | 7 | $options->getParentIdColumnName(), |
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434 | 7 | $options->getLevelColumnName(), |
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435 | ); |
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436 | |||
437 | 7 | if ($options->getScopeColumnName()) { |
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438 | 5 | $columns[] = $options->getScopeColumnName(); |
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439 | } |
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440 | |||
441 | 7 | $select = $this->getBlankDbSelect(); |
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442 | 7 | $select->columns($columns); |
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443 | 7 | $select->order($options->getLeftColumnName(true)); |
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444 | 7 | $select->where(array( |
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445 | 7 | $options->getParentIdColumnName(true) => $parentNodeId, |
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446 | )); |
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447 | |||
448 | 7 | $data = $dbAdapter->query($select->getSqlString($dbAdapter->getPlatform()), |
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449 | 7 | DbAdapter::QUERY_MODE_EXECUTE); |
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450 | |||
451 | 7 | $result = array(); |
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452 | |||
453 | 7 | foreach ($data->toArray() as $nodeData) { |
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454 | 6 | $result[] = $this->_buildNodeInfoObject($nodeData); |
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455 | } |
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456 | |||
457 | 7 | return $result; |
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458 | } |
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459 | |||
460 | /** |
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461 | * {@inheritdoc} |
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462 | */ |
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463 | 3 | public function updateNodeMetadata(NodeInfo $nodeInfo): void |
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464 | { |
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465 | 3 | $dbAdapter = $this->getDbAdapter(); |
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466 | 3 | $options = $this->getOptions(); |
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467 | |||
468 | 3 | $update = new Db\Sql\Update($options->getTableName()); |
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469 | |||
470 | 3 | $update->set(array( |
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471 | 3 | $options->getRightColumnName() => $nodeInfo->getRight(), |
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472 | 3 | $options->getLeftColumnName() => $nodeInfo->getLeft(), |
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473 | 3 | $options->getLevelColumnName() => $nodeInfo->getLevel(), |
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474 | )); |
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475 | |||
476 | 3 | $update->where(array( |
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477 | 3 | $options->getIdColumnName() => $nodeInfo->getId(), |
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478 | )); |
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479 | |||
480 | 3 | $dbAdapter->query($update->getSqlString($dbAdapter->getPlatform()), |
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481 | 3 | DbAdapter::QUERY_MODE_EXECUTE); |
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482 | 3 | } |
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483 | |||
484 | /** |
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485 | * {@inheritdoc} |
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486 | */ |
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487 | 10 | public function getAncestors($nodeId, int $startLevel = 0, int $excludeLastNLevels = 0): array |
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488 | { |
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489 | 10 | $options = $this->getOptions(); |
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490 | |||
491 | 10 | $startLevel = (int) $startLevel; |
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492 | |||
493 | // node does not exist |
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494 | 10 | $nodeInfo = $this->getNodeInfo($nodeId); |
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495 | 10 | if (!$nodeInfo) { |
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496 | 2 | return array(); |
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497 | } |
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498 | |||
499 | 8 | $dbAdapter = $this->getDbAdapter(); |
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500 | |||
501 | 8 | $select = $this->getDefaultDbSelect(); |
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502 | |||
503 | 8 | if ($options->getScopeColumnName()) { |
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504 | 3 | $select->where |
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505 | 3 | ->equalTo($options->getScopeColumnName(true), $nodeInfo->getScope()); |
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506 | } |
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507 | |||
508 | 8 | $select->where |
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509 | 8 | ->lessThanOrEqualTo($options->getLeftColumnName(true), $nodeInfo->getLeft()) |
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510 | 8 | ->AND |
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511 | 8 | ->greaterThanOrEqualTo($options->getRightColumnName(true), $nodeInfo->getRight()); |
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512 | |||
513 | 8 | $select->order($options->getLeftColumnName(true).' ASC'); |
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514 | |||
515 | 8 | if (0 < $startLevel) { |
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516 | 3 | $select->where |
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517 | 3 | ->greaterThanOrEqualTo($options->getLevelColumnName(true), $startLevel); |
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518 | } |
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519 | |||
520 | 8 | if (0 < $excludeLastNLevels) { |
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521 | 4 | $select->where |
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522 | 4 | ->lessThanOrEqualTo($options->getLevelColumnName(true), $nodeInfo->getLevel() - $excludeLastNLevels); |
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523 | } |
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524 | |||
525 | 8 | $result = $dbAdapter->query($select->getSqlString($dbAdapter->getPlatform()), |
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526 | 8 | DbAdapter::QUERY_MODE_EXECUTE); |
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527 | |||
528 | 8 | return $result->toArray(); |
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529 | } |
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530 | |||
531 | /** |
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532 | * {@inheritdoc} |
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533 | */ |
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534 | 16 | public function getDescendants($nodeId, int $startLevel = 0, ?int $levels = null, $excludeBranch = null): array |
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594 | } |
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595 |
In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: