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 CacheManager extends CacheInvalidator |
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26 | { |
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27 | /** |
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28 | * @var UrlGeneratorInterface |
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29 | */ |
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30 | private $urlGenerator; |
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31 | |||
32 | /** |
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33 | * What type of urls to generate. |
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34 | * |
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35 | * @var bool|string |
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36 | */ |
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37 | private $generateUrlType = UrlGeneratorInterface::ABSOLUTE_PATH; |
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38 | |||
39 | /** |
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40 | * Constructor. |
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41 | * |
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42 | * @param ProxyClientInterface $cache HTTP cache proxy client |
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43 | * @param UrlGeneratorInterface $urlGenerator Symfony route generator |
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44 | */ |
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45 | 11 | public function __construct(ProxyClientInterface $cache, UrlGeneratorInterface $urlGenerator) |
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50 | |||
51 | /** |
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52 | * Set what type of URLs to generate. |
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53 | * |
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54 | * @param bool|string $generateUrlType One of the constants in UrlGeneratorInterface |
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55 | */ |
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56 | 8 | public function setGenerateUrlType($generateUrlType) |
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57 | { |
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58 | 8 | $this->generateUrlType = $generateUrlType; |
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59 | 8 | } |
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60 | |||
61 | /** |
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62 | * Assign cache tags to a response. |
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63 | * |
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64 | * @param Response $response |
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65 | * @param array $tags |
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66 | * @param bool $replace Whether to replace the current tags on the |
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67 | * response |
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68 | * |
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69 | * @return $this |
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70 | * |
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71 | * @deprecated Add tags with TagHandler::addTags and then use TagHandler::tagResponse |
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72 | */ |
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73 | 1 | public function tagResponse(Response $response, array $tags, $replace = false) |
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74 | { |
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75 | 1 | @trigger_error('The '.__METHOD__.' method is deprecated since version 1.2 and will be removed in 2.0. Use the TagHandler instead.', E_USER_DEPRECATED); |
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76 | |||
77 | 1 | View Code Duplication | if (!$replace && $response->headers->has($this->getTagsHeader())) { |
78 | 1 | $header = $response->headers->get($this->getTagsHeader()); |
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79 | 1 | if ('' !== $header) { |
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80 | 1 | $tags = array_merge( |
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81 | 1 | explode(',', $response->headers->get($this->getTagsHeader())), |
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82 | $tags |
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83 | ); |
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84 | } |
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85 | } |
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86 | |||
87 | 1 | $uniqueTags = array_unique($tags); |
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88 | 1 | $response->headers->set($this->getTagsHeader(), implode(',', $uniqueTags)); |
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89 | |||
90 | 1 | return $this; |
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91 | } |
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92 | |||
93 | /** |
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94 | * Invalidate a route. |
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95 | * |
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96 | * @param string $name Route name |
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97 | * @param array $parameters Route parameters (optional) |
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98 | * @param array $headers Extra HTTP headers to send to the caching proxy (optional) |
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99 | * |
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100 | * @return $this |
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101 | */ |
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102 | 1 | public function invalidateRoute($name, array $parameters = array(), array $headers = array()) |
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108 | |||
109 | /** |
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110 | * Refresh a route. |
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111 | * |
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112 | * @param string $route Route name |
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113 | * @param array $parameters Route parameters (optional) |
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114 | * @param array $headers Extra HTTP headers to send to the caching proxy (optional) |
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115 | * |
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116 | * @return $this |
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117 | */ |
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118 | 1 | public function refreshRoute($route, array $parameters = array(), array $headers = array()) |
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124 | } |
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125 |
If you suppress an error, we recommend checking for the error condition explicitly: