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:
| 1 | <?php |
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| 25 | class TranslatableRepository extends Repository |
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| 26 | { |
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| 27 | /** |
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| 28 | * @var LocaleContextInterface |
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| 29 | */ |
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| 30 | private $localeContext; |
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| 31 | |||
| 32 | /** |
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| 33 | * @var string[] |
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| 34 | */ |
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| 35 | private $cache; |
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| 36 | |||
| 37 | /** |
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| 38 | * @param EntityManager $em |
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| 39 | * @param ClassMetadata $class |
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| 40 | * @param ResourceInterface $resource |
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| 41 | * @param LocaleContextInterface $localeContext |
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| 42 | */ |
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| 43 | 4 | public function __construct( |
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| 53 | |||
| 54 | /** |
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| 55 | * {@inheritdoc} |
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| 56 | */ |
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| 57 | 2 | public function createQueryBuilder($alias = null, $indexBy = null) |
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| 66 | |||
| 67 | /** |
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| 68 | * {@inheritdoc} |
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| 69 | */ |
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| 70 | 1 | public function createQueryBuilderForCollection($alias = null, $indexBy = null) |
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| 84 | |||
| 85 | /** |
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| 86 | * {@inheritdoc} |
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| 87 | */ |
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| 88 | 3 | View Code Duplication | public function getProperty($property, $root = null) |
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| 108 | /** |
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| 109 | * @param QueryBuilder|string|null $root |
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| 110 | * |
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| 111 | * @return string |
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| 112 | */ |
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| 113 | 3 | private function getTranslationAlias($root) |
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| 117 | |||
| 118 | /** |
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| 119 | * @param QueryBuilder|string|null $root |
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| 120 | * |
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| 121 | * @return string |
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| 122 | */ |
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| 123 | 3 | private function getRootAlias($root) |
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| 131 | |||
| 132 | /** |
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| 133 | * @param ClassMetadata $metadata |
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| 134 | * |
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| 135 | * @return string[] |
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| 136 | */ |
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| 137 | 3 | private function getProperties(ClassMetadata $metadata) |
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| 144 | |||
| 145 | /** |
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| 146 | * @param string $property |
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| 147 | * |
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| 148 | * @return string |
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| 149 | */ |
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| 150 | 3 | private function getRootProperty($property) |
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| 154 | |||
| 155 | /** |
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| 156 | * @return string[] |
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| 157 | */ |
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| 158 | 1 | View Code Duplication | private function getLocales() |
| 168 | } |
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| 169 |
This check looks for a call to a parent method whose name is different than the method from which it is called.
Consider the following code:
The
getFirstName()method in theSoncalls the wrong method in the parent class.