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<?php |
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namespace SIL; |
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use LinkCache; |
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use Title; |
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use DatabaseBase; |
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/** |
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* Handling Title::getDbPageLanguageCode and Special:PageLanguage to avoid possible |
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* contradictory results when $wgPageLanguageUseDB is enabled. |
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* |
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* If wgPageLanguageUseDB is enabled then the PageContentLanguage hook is not |
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* going to be called in case Special:PageLanguage assigned a pagelanguage which |
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* could create a possible deviation between SIL annotation and the stored DB |
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* `page_lang`. |
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* |
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* @license GNU GPL v2+ |
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* @since 1.3 |
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* |
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* @author mwjames |
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*/ |
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class PageContentLanguageDbModifier { |
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/** |
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* @var Title |
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*/ |
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private $title; |
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/** |
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* @var DatabaseBase |
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*/ |
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private $connection; |
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/** |
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* @var LinkCache |
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*/ |
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private $linkCache; |
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/** |
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* @var boolean |
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*/ |
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private $isDbPageLanguage = false; |
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/** |
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* @var string|false |
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*/ |
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private $dbPageLanguage = false; |
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/** |
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* @since 1.3 |
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* |
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* @param Title $title |
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* @param DatabaseBase|null $connection |
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* @param LinkCache|null $linkCache |
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*/ |
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public function __construct( Title $title, DatabaseBase $connection = null, LinkCache $linkCache = null ) { |
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$this->title = $title; |
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$this->connection = $connection; |
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$this->linkCache = $linkCache; |
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} |
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/** |
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* @since 1.3 |
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* |
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* @param boolean $isDbPageLanguage |
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*/ |
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public function markAsPageLanguageByDB( $isDbPageLanguage ) { |
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$this->isDbPageLanguage = $isDbPageLanguage; |
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} |
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/** |
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* @since 1.3 |
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* |
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* @param string $expectedLanguageCode |
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*/ |
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public function updatePageLanguage( $expectedLanguageCode ) { |
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if ( !$this->isDbPageLanguage ) { |
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return null; |
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} |
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$expectedLanguageCode = strtolower( $expectedLanguageCode ); |
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// If the pagelanguage added via Special:PageLanguage is different from |
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// what SIL is expecting then push for a DB update |
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if ( $this->getDbPageLanguageCode() && $this->dbPageLanguage !== $expectedLanguageCode ) { |
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$this->doUpdate( $expectedLanguageCode, $this->dbPageLanguage ); |
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} |
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} |
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// @see Title::getDbPageLanguageCode |
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private function getDbPageLanguageCode() { |
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if ( $this->linkCache === null ) { |
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$this->linkCache = LinkCache::singleton(); |
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} |
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// check, if the page language could be saved in the database, and if so and |
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// the value is not requested already, lookup the page language using LinkCache |
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if ( $this->isDbPageLanguage && $this->dbPageLanguage === false ) { |
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$this->linkCache->addLinkObj( $this->title ); |
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$this->dbPageLanguage = $this->linkCache->getGoodLinkFieldObj( $this->title, 'lang' ); |
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} |
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return $this->dbPageLanguage; |
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} |
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// @see Special:PageLanguage::onSubmit |
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private function doUpdate( $expectedLanguageCode, $dbPageLanguage ) { |
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$connection = $this->connection; |
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$title = $this->title; |
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if ( $connection === null ) { |
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$connection = wfGetDB( DB_MASTER ); |
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} |
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$connection->onTransactionIdle( function() use ( $connection, $expectedLanguageCode, $dbPageLanguage, $title ) { |
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$pageId = $title->getArticleID(); |
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$connection->update( |
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'page', |
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array( |
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'page_lang' => $expectedLanguageCode |
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1 |
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), |
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array( |
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'page_id' => $pageId, |
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'page_lang' => $dbPageLanguage |
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1 |
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), |
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__METHOD__ |
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); |
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} ); |
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1 |
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} |
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} |
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SemanticMediaWiki /
SemanticInterlanguageLinks
