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 ConvertDoctrine1Schema 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 ConvertDoctrine1Schema, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 37 | class ConvertDoctrine1Schema |
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| 38 | { |
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| 39 | /** |
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| 40 | * @var array |
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| 41 | */ |
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| 42 | private $from; |
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| 43 | |||
| 44 | /** |
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| 45 | * @var array |
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| 46 | */ |
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| 47 | private $legacyTypeMap = [ |
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| 48 | // TODO: This list may need to be updated |
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| 49 | 'clob' => 'text', |
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| 50 | 'timestamp' => 'datetime', |
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| 51 | 'enum' => 'string' |
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| 52 | ]; |
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| 53 | |||
| 54 | /** |
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| 55 | * Constructor passes the directory or array of directories |
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| 56 | * to convert the Doctrine 1 schema files from. |
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| 57 | * |
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| 58 | * @param array $from |
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| 59 | * |
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| 60 | * @author Jonathan Wage |
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| 61 | */ |
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| 62 | 2 | public function __construct($from) |
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| 66 | |||
| 67 | /** |
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| 68 | * Gets an array of ClassMetadataInfo instances from the passed |
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| 69 | * Doctrine 1 schema. |
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| 70 | * |
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| 71 | * @return array An array of ClassMetadataInfo instances |
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| 72 | */ |
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| 73 | 2 | public function getMetadata() |
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| 94 | |||
| 95 | /** |
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| 96 | * @param string $className |
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| 97 | * @param array $mappingInformation |
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| 98 | * |
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| 99 | * @return \Doctrine\ORM\Mapping\ClassMetadataInfo |
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| 100 | */ |
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| 101 | 1 | private function convertToClassMetadataInfo($className, $mappingInformation) |
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| 112 | |||
| 113 | /** |
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| 114 | * @param string $className |
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| 115 | * @param array $model |
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| 116 | * @param ClassMetadataInfo $metadata |
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| 117 | * |
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| 118 | * @return void |
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| 119 | */ |
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| 120 | 1 | private function convertTableName($className, array $model, ClassMetadataInfo $metadata) |
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| 133 | |||
| 134 | /** |
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| 135 | * @param string $className |
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| 136 | * @param array $model |
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| 137 | * @param ClassMetadataInfo $metadata |
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| 138 | * |
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| 139 | * @return void |
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| 140 | */ |
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| 141 | 1 | private function convertColumns($className, array $model, ClassMetadataInfo $metadata) |
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| 166 | |||
| 167 | /** |
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| 168 | * @param string $className |
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| 169 | * @param string $name |
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| 170 | * @param string|array $column |
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| 171 | * @param ClassMetadataInfo $metadata |
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| 172 | * |
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| 173 | * @return array |
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| 174 | * |
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| 175 | * @throws ToolsException |
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| 176 | */ |
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| 177 | 1 | private function convertColumn($className, $name, $column, ClassMetadataInfo $metadata) |
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| 178 | { |
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| 179 | 1 | if (is_string($column)) { |
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| 180 | 1 | $string = $column; |
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| 181 | 1 | $column = []; |
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| 182 | 1 | $column['type'] = $string; |
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| 183 | } |
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| 184 | |||
| 185 | 1 | if ( ! isset($column['name'])) { |
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| 186 | 1 | $column['name'] = $name; |
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| 187 | } |
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| 188 | |||
| 189 | // check if a column alias was used (column_name as field_name) |
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| 190 | 1 | View Code Duplication | if (preg_match("/(\w+)\sas\s(\w+)/i", $column['name'], $matches)) { |
| 191 | 1 | $name = $matches[1]; |
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| 192 | 1 | $column['name'] = $name; |
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| 193 | 1 | $column['alias'] = $matches[2]; |
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| 194 | } |
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| 195 | |||
| 196 | 1 | View Code Duplication | if (preg_match("/([a-zA-Z]+)\(([0-9]+)\)/", $column['type'], $matches)) { |
| 197 | 1 | $column['type'] = $matches[1]; |
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| 198 | 1 | $column['length'] = $matches[2]; |
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| 199 | } |
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| 200 | |||
| 201 | 1 | $column['type'] = strtolower($column['type']); |
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| 202 | // check if legacy column type (1.x) needs to be mapped to a 2.0 one |
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| 203 | 1 | if (isset($this->legacyTypeMap[$column['type']])) { |
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| 204 | 1 | $column['type'] = $this->legacyTypeMap[$column['type']]; |
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| 205 | } |
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| 206 | |||
| 207 | 1 | if ( ! Type::hasType($column['type'])) { |
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| 208 | throw ToolsException::couldNotMapDoctrine1Type($column['type']); |
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| 209 | } |
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| 210 | |||
| 211 | 1 | $fieldMapping = []; |
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| 212 | |||
| 213 | 1 | if (isset($column['primary'])) { |
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| 214 | $fieldMapping['id'] = true; |
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| 215 | } |
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| 216 | |||
| 217 | 1 | $fieldMapping['fieldName'] = $column['alias'] ?? $name; |
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| 218 | 1 | $fieldMapping['columnName'] = $column['name']; |
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| 219 | 1 | $fieldMapping['type'] = $column['type']; |
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| 220 | |||
| 221 | 1 | if (isset($column['length'])) { |
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| 222 | 1 | $fieldMapping['length'] = $column['length']; |
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| 223 | } |
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| 224 | |||
| 225 | 1 | $allowed = ['precision', 'scale', 'unique', 'options', 'notnull', 'version']; |
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| 226 | |||
| 227 | 1 | foreach ($column as $key => $value) { |
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| 228 | 1 | if (in_array($key, $allowed)) { |
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| 229 | 1 | $fieldMapping[$key] = $value; |
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| 230 | } |
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| 231 | } |
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| 232 | |||
| 233 | 1 | $metadata->mapField($fieldMapping); |
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| 234 | |||
| 235 | 1 | if (isset($column['autoincrement'])) { |
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| 236 | $metadata->setIdGeneratorType(ClassMetadataInfo::GENERATOR_TYPE_AUTO); |
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| 237 | 1 | } elseif (isset($column['sequence'])) { |
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| 238 | $metadata->setIdGeneratorType(ClassMetadataInfo::GENERATOR_TYPE_SEQUENCE); |
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| 239 | |||
| 240 | $definition = [ |
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| 241 | 'sequenceName' => is_array($column['sequence']) ? $column['sequence']['name']:$column['sequence'] |
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| 242 | ]; |
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| 243 | |||
| 244 | if (isset($column['sequence']['size'])) { |
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| 245 | $definition['allocationSize'] = $column['sequence']['size']; |
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| 246 | } |
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| 247 | |||
| 248 | if (isset($column['sequence']['value'])) { |
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| 249 | $definition['initialValue'] = $column['sequence']['value']; |
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| 250 | } |
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| 251 | |||
| 252 | $metadata->setSequenceGeneratorDefinition($definition); |
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| 253 | } |
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| 254 | |||
| 255 | 1 | return $fieldMapping; |
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| 256 | } |
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| 257 | |||
| 258 | /** |
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| 259 | * @param string $className |
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| 260 | * @param array $model |
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| 261 | * @param ClassMetadataInfo $metadata |
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| 262 | * |
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| 263 | * @return void |
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| 264 | */ |
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| 265 | 1 | private function convertIndexes($className, array $model, ClassMetadataInfo $metadata) |
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| 280 | |||
| 281 | /** |
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| 282 | * @param string $className |
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| 283 | * @param array $model |
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| 284 | * @param ClassMetadataInfo $metadata |
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| 285 | * |
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| 286 | * @return void |
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| 287 | */ |
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| 288 | 1 | private function convertRelations($className, array $model, ClassMetadataInfo $metadata) |
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| 344 | } |
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| 345 |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.