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<?php |
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namespace PPP\Wikidata\Cache; |
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use Doctrine\Common\Cache\Cache; |
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use OutOfBoundsException; |
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use PPP\Wikidata\Wikipedia\SiteLinkProvider; |
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use RuntimeException; |
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use Wikibase\DataModel\SiteLink; |
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/** |
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* Cache whose keys are based on SiteLink |
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* |
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* @licence GPLv2+ |
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* @author Thomas Pellissier Tanon |
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*/ |
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class PerSiteLinkCache { |
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const CACHE_ID_PREFIX = 'ppp-wd-pslc-'; |
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const CACHE_LIFE_TIME = 86400; |
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/** |
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* @var Cache |
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*/ |
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private $cache; |
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/** |
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* @var string |
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*/ |
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private $name; |
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/** |
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* @param Cache $cache |
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* @param string $name |
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*/ |
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public function __construct(Cache $cache, $name) { |
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$this->cache = $cache; |
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$this->name = $name; |
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} |
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/** |
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* @param SiteLink $siteLink |
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* @return SiteLinkProvider |
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*/ |
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public function fetch(SiteLink $siteLink) { |
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$result = $this->cache->fetch($this->getCacheId($siteLink)); |
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if($result === false) { |
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throw new OutOfBoundsException('The search is not in the cache.'); |
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} |
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return $result; |
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} |
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/** |
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* @param SiteLink $siteLink |
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* @return bool |
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*/ |
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public function contains(SiteLink $siteLink) { |
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return $this->cache->contains($this->getCacheId($siteLink)); |
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} |
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/** |
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* @param SiteLinkProvider $value |
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*/ |
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public function save(SiteLinkProvider $value) { |
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if(!$this->cache->save( |
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$this->getCacheId($value->getSiteLink()), |
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$value, |
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self::CACHE_LIFE_TIME |
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)) { |
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throw new RuntimeException('The cache failed to save.'); |
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} |
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} |
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private function getCacheId(SiteLink $siteLink) { |
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return self::CACHE_ID_PREFIX . '-' . $this->name . '-' . $siteLink->getSiteId() . '-' . md5($this->normalizeTitle($siteLink->getPageName())); |
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} |
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private function normalizeTitle($title) { |
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return str_replace('_', ' ', $title); |
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} |
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} |
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ProjetPP /
PPP-Wikidata
