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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Deferred\LinksUpdate; |
| 4 | |
| 5 | use MediaWiki\ExternalLinks\LinkFilter; |
| 6 | use MediaWiki\Parser\ParserOutput; |
| 7 | |
| 8 | /** |
| 9 | * externallinks |
| 10 | * |
| 11 | * Link ID format: string URL |
| 12 | * |
| 13 | * @since 1.38 |
| 14 | */ |
| 15 | class ExternalLinksTable extends LinksTable { |
| 16 | /** @var array<string,array<string,true>> */ |
| 17 | private $newLinks = []; |
| 18 | /** @var array<string,array<string,true>>|null */ |
| 19 | private $existingLinks; |
| 20 | |
| 21 | public function setParserOutput( ParserOutput $parserOutput ) { |
| 22 | foreach ( $parserOutput->getExternalLinks() as $url => $unused ) { |
| 23 | foreach ( LinkFilter::makeIndexes( $url ) as [ $domainIndex, $path ] ) { |
| 24 | $this->newLinks[$domainIndex][$path] = true; |
| 25 | } |
| 26 | } |
| 27 | } |
| 28 | |
| 29 | /** @inheritDoc */ |
| 30 | protected function getTableName() { |
| 31 | return 'externallinks'; |
| 32 | } |
| 33 | |
| 34 | /** @inheritDoc */ |
| 35 | protected function getFromField() { |
| 36 | return 'el_from'; |
| 37 | } |
| 38 | |
| 39 | /** @inheritDoc */ |
| 40 | protected function getExistingFields() { |
| 41 | return [ 'el_to_domain_index', 'el_to_path' ]; |
| 42 | } |
| 43 | |
| 44 | /** |
| 45 | * Get the existing links as an array |
| 46 | * |
| 47 | * @return array |
| 48 | */ |
| 49 | private function getExistingLinks() { |
| 50 | if ( $this->existingLinks === null ) { |
| 51 | $this->existingLinks = []; |
| 52 | foreach ( $this->fetchExistingRows() as $row ) { |
| 53 | $this->existingLinks[$row->el_to_domain_index][$row->el_to_path ?? ''] = true; |
| 54 | } |
| 55 | } |
| 56 | return $this->existingLinks; |
| 57 | } |
| 58 | |
| 59 | /** @inheritDoc */ |
| 60 | protected function getNewLinkIDs() { |
| 61 | foreach ( $this->newLinks as $domainIndex => $paths ) { |
| 62 | foreach ( $paths as $path => $unused ) { |
| 63 | yield [ (string)$domainIndex, (string)$path ]; |
| 64 | } |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | /** @inheritDoc */ |
| 69 | protected function getExistingLinkIDs() { |
| 70 | foreach ( $this->getExistingLinks() as $domainIndex => $paths ) { |
| 71 | foreach ( $paths as $path => $unused ) { |
| 72 | yield [ (string)$domainIndex, (string)$path ]; |
| 73 | } |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | /** @inheritDoc */ |
| 78 | protected function isExisting( $linkId ) { |
| 79 | [ $domainIndex, $path ] = $linkId; |
| 80 | return isset( $this->getExistingLinks()[$domainIndex][$path] ); |
| 81 | } |
| 82 | |
| 83 | /** @inheritDoc */ |
| 84 | protected function isInNewSet( $linkId ) { |
| 85 | [ $domainIndex, $path ] = $linkId; |
| 86 | return isset( $this->newLinks[$domainIndex][$path] ); |
| 87 | } |
| 88 | |
| 89 | /** @inheritDoc */ |
| 90 | protected function insertLink( $linkId ) { |
| 91 | [ $domainIndex, $path ] = $linkId; |
| 92 | $params = [ |
| 93 | 'el_to_domain_index' => substr( $domainIndex, 0, 255 ), |
| 94 | 'el_to_path' => $path, |
| 95 | ]; |
| 96 | $this->insertRow( $params ); |
| 97 | } |
| 98 | |
| 99 | /** @inheritDoc */ |
| 100 | protected function deleteLink( $linkId ) { |
| 101 | [ $domainIndex, $path ] = $linkId; |
| 102 | $this->deleteRow( [ |
| 103 | 'el_to_domain_index' => substr( $domainIndex, 0, 255 ), |
| 104 | 'el_to_path' => $path |
| 105 | ] ); |
| 106 | if ( $path === '' ) { |
| 107 | // el_to_path is nullable, but null is not valid in php arrays, |
| 108 | // so both values are handled as one key, delete both rows when exists |
| 109 | $this->deleteRow( [ |
| 110 | 'el_to_domain_index' => substr( $domainIndex, 0, 255 ), |
| 111 | 'el_to_path' => null |
| 112 | ] ); |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Get an array of URLs of the given type |
| 118 | * |
| 119 | * @param int $setType One of the link set constants as in LinksTable::getLinkIDs() |
| 120 | * @return string[] |
| 121 | */ |
| 122 | public function getStringArray( $setType ) { |
| 123 | $ids = $this->getLinkIDs( $setType ); |
| 124 | $stringArray = []; |
| 125 | foreach ( $ids as $linkId ) { |
| 126 | [ $domainIndex, $path ] = $linkId; |
| 127 | $stringArray[] = LinkFilter::reverseIndexes( $domainIndex ) . $path; |
| 128 | } |
| 129 | return $stringArray; |
| 130 | } |
| 131 | |
| 132 | /** @inheritDoc */ |
| 133 | protected function virtualDomain() { |
| 134 | return self::VIRTUAL_DOMAIN; |
| 135 | } |
| 136 | } |