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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Deferred\LinksUpdate; |
| 4 | |
| 5 | use MediaWiki\Parser\ParserOutput; |
| 6 | use MediaWiki\Parser\ParserOutputLinkTypes; |
| 7 | |
| 8 | /** |
| 9 | * langlinks |
| 10 | * |
| 11 | * Link ID format: string[] |
| 12 | * - 0: Language code |
| 13 | * - 1: Foreign title |
| 14 | * |
| 15 | * @since 1.38 |
| 16 | */ |
| 17 | class LangLinksTable extends LinksTable { |
| 18 | /** @var string[] */ |
| 19 | private $newLinks = []; |
| 20 | /** @var string[]|null */ |
| 21 | private $existingLinks; |
| 22 | |
| 23 | public function setParserOutput( ParserOutput $parserOutput ) { |
| 24 | // Convert the format of the interlanguage links |
| 25 | $this->newLinks = []; |
| 26 | foreach ( |
| 27 | $parserOutput->getLinkList( ParserOutputLinkTypes::LANGUAGE ) |
| 28 | as [ 'link' => $link ] |
| 29 | ) { |
| 30 | $key = $link->getInterwiki(); |
| 31 | $title = $link->getText(); |
| 32 | if ( $link->hasFragment() ) { |
| 33 | $title .= '#' . $link->getFragment(); |
| 34 | } |
| 35 | // Ensure that the "first" link has precedence (T26502) although |
| 36 | // ParserOutput::addLanguageLink() should ensure we don't see dups |
| 37 | $this->newLinks[$key] ??= $title; |
| 38 | } |
| 39 | } |
| 40 | |
| 41 | /** @inheritDoc */ |
| 42 | protected function getTableName() { |
| 43 | return 'langlinks'; |
| 44 | } |
| 45 | |
| 46 | /** @inheritDoc */ |
| 47 | protected function getFromField() { |
| 48 | return 'll_from'; |
| 49 | } |
| 50 | |
| 51 | /** @inheritDoc */ |
| 52 | protected function getExistingFields() { |
| 53 | return [ 'll_lang', 'll_title' ]; |
| 54 | } |
| 55 | |
| 56 | /** @inheritDoc */ |
| 57 | protected function getNewLinkIDs() { |
| 58 | foreach ( $this->newLinks as $key => $title ) { |
| 59 | yield [ (string)$key, $title ]; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Get the existing links as an array where the key is the language code |
| 65 | * and the value is the title of the target in that language. |
| 66 | * |
| 67 | * @return array |
| 68 | */ |
| 69 | private function getExistingLinks() { |
| 70 | if ( $this->existingLinks === null ) { |
| 71 | $this->existingLinks = []; |
| 72 | foreach ( $this->fetchExistingRows() as $row ) { |
| 73 | $this->existingLinks[$row->ll_lang] = $row->ll_title; |
| 74 | } |
| 75 | } |
| 76 | return $this->existingLinks; |
| 77 | } |
| 78 | |
| 79 | /** @inheritDoc */ |
| 80 | protected function getExistingLinkIDs() { |
| 81 | foreach ( $this->getExistingLinks() as $lang => $title ) { |
| 82 | yield [ (string)$lang, $title ]; |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | /** @inheritDoc */ |
| 87 | protected function isExisting( $linkId ) { |
| 88 | $links = $this->getExistingLinks(); |
| 89 | [ $lang, $title ] = $linkId; |
| 90 | return \array_key_exists( $lang, $links ) |
| 91 | && $links[$lang] === $title; |
| 92 | } |
| 93 | |
| 94 | /** @inheritDoc */ |
| 95 | protected function isInNewSet( $linkId ) { |
| 96 | [ $lang, $title ] = $linkId; |
| 97 | return \array_key_exists( $lang, $this->newLinks ) |
| 98 | && $this->newLinks[$lang] === $title; |
| 99 | } |
| 100 | |
| 101 | /** @inheritDoc */ |
| 102 | protected function insertLink( $linkId ) { |
| 103 | [ $lang, $title ] = $linkId; |
| 104 | $this->insertRow( [ |
| 105 | 'll_lang' => $lang, |
| 106 | 'll_title' => $title |
| 107 | ] ); |
| 108 | } |
| 109 | |
| 110 | /** @inheritDoc */ |
| 111 | protected function deleteLink( $linkId ) { |
| 112 | $this->deleteRow( [ |
| 113 | 'll_lang' => $linkId[0] |
| 114 | ] ); |
| 115 | } |
| 116 | } |