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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Deferred\LinksUpdate; |
| 4 | |
| 5 | use MediaWiki\JobQueue\Utils\PurgeJobUtils; |
| 6 | use MediaWiki\Page\PageReferenceValue; |
| 7 | use MediaWiki\Parser\ParserOutput; |
| 8 | use MediaWiki\Parser\ParserOutputLinkTypes; |
| 9 | use MediaWiki\Title\Title; |
| 10 | |
| 11 | /** |
| 12 | * imagelinks |
| 13 | * |
| 14 | * Link ID format: string image name |
| 15 | * |
| 16 | * @since 1.38 |
| 17 | */ |
| 18 | class ImageLinksTable extends TitleLinksTable { |
| 19 | /** |
| 20 | * @var array New links with the name in the key, value arbitrary |
| 21 | */ |
| 22 | private $newLinks; |
| 23 | |
| 24 | /** |
| 25 | * @var array Existing links with the name in the key, value arbitrary |
| 26 | */ |
| 27 | private $existingLinks; |
| 28 | |
| 29 | public function setParserOutput( ParserOutput $parserOutput ) { |
| 30 | // Convert the format of the local links |
| 31 | $this->newLinks = []; |
| 32 | foreach ( |
| 33 | $parserOutput->getLinkList( ParserOutputLinkTypes::MEDIA ) |
| 34 | as [ 'link' => $link ] |
| 35 | ) { |
| 36 | $this->newLinks[$link->getDBkey()] = 1; |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | /** @inheritDoc */ |
| 41 | protected function getTableName() { |
| 42 | return 'imagelinks'; |
| 43 | } |
| 44 | |
| 45 | /** @inheritDoc */ |
| 46 | protected function getFromField() { |
| 47 | return 'il_from'; |
| 48 | } |
| 49 | |
| 50 | /** @inheritDoc */ |
| 51 | protected function getTargetIdField() { |
| 52 | return 'il_target_id'; |
| 53 | } |
| 54 | |
| 55 | /** @inheritDoc */ |
| 56 | protected function getExistingFields() { |
| 57 | return [ 'lt_title' ]; |
| 58 | } |
| 59 | |
| 60 | /** @inheritDoc */ |
| 61 | protected function getNewLinkIDs() { |
| 62 | foreach ( $this->newLinks as $link => $unused ) { |
| 63 | yield (string)$link; |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Get existing links with the name in the key, value arbitrary. |
| 69 | * |
| 70 | * @return array |
| 71 | */ |
| 72 | private function getExistingLinks() { |
| 73 | if ( $this->existingLinks === null ) { |
| 74 | $this->existingLinks = []; |
| 75 | foreach ( $this->fetchExistingRows() as $row ) { |
| 76 | $this->existingLinks[$row->lt_title] = true; |
| 77 | } |
| 78 | } |
| 79 | return $this->existingLinks; |
| 80 | } |
| 81 | |
| 82 | /** @inheritDoc */ |
| 83 | protected function getExistingLinkIDs() { |
| 84 | foreach ( $this->getExistingLinks() as $link => $unused ) { |
| 85 | yield (string)$link; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | /** @inheritDoc */ |
| 90 | protected function isExisting( $linkId ) { |
| 91 | return \array_key_exists( $linkId, $this->getExistingLinks() ); |
| 92 | } |
| 93 | |
| 94 | /** @inheritDoc */ |
| 95 | protected function isInNewSet( $linkId ) { |
| 96 | return \array_key_exists( $linkId, $this->newLinks ); |
| 97 | } |
| 98 | |
| 99 | /** @inheritDoc */ |
| 100 | protected function needForcedLinkRefresh() { |
| 101 | return $this->isCrossNamespaceMove(); |
| 102 | } |
| 103 | |
| 104 | /** @inheritDoc */ |
| 105 | protected function insertLink( $linkId ) { |
| 106 | $this->insertRow( [ |
| 107 | 'il_from_namespace' => $this->getSourcePage()->getNamespace(), |
| 108 | 'il_target_id' => $this->linkTargetLookup->acquireLinkTargetId( |
| 109 | $this->makeTitle( $linkId ), |
| 110 | $this->getDB() |
| 111 | ), |
| 112 | ] ); |
| 113 | } |
| 114 | |
| 115 | /** @inheritDoc */ |
| 116 | protected function deleteLink( $linkId ) { |
| 117 | $this->deleteRow( [ |
| 118 | 'il_target_id' => $this->linkTargetLookup->acquireLinkTargetId( |
| 119 | $this->makeTitle( $linkId ), |
| 120 | $this->getDB() |
| 121 | ) |
| 122 | ] ); |
| 123 | } |
| 124 | |
| 125 | /** @inheritDoc */ |
| 126 | protected function makePageReferenceValue( $linkId ): PageReferenceValue { |
| 127 | return PageReferenceValue::localReference( NS_FILE, $linkId ); |
| 128 | } |
| 129 | |
| 130 | /** @inheritDoc */ |
| 131 | protected function makeTitle( $linkId ): Title { |
| 132 | return Title::makeTitle( NS_FILE, $linkId ); |
| 133 | } |
| 134 | |
| 135 | /** @inheritDoc */ |
| 136 | protected function deduplicateLinkIds( $linkIds ) { |
| 137 | if ( !is_array( $linkIds ) ) { |
| 138 | $linkIds = iterator_to_array( $linkIds ); |
| 139 | } |
| 140 | return array_unique( $linkIds ); |
| 141 | } |
| 142 | |
| 143 | protected function finishUpdate() { |
| 144 | // A update of namespace on cross namespace move is detected as insert + delete, |
| 145 | // but the updates are not needed there. |
| 146 | $allInsertedLinks = array_column( $this->insertedLinks, 0 ); |
| 147 | $allDeletedLinks = array_column( $this->deletedLinks, 0 ); |
| 148 | $insertedLinks = array_diff( $allInsertedLinks, $allDeletedLinks ); |
| 149 | $deletedLinks = array_diff( $allDeletedLinks, $allInsertedLinks ); |
| 150 | |
| 151 | $this->invalidateImageDescriptions( $insertedLinks, $deletedLinks ); |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Invalidate all image description pages which had links added or removed |
| 156 | * @param array $insertedLinks |
| 157 | * @param array $deletedLinks |
| 158 | */ |
| 159 | private function invalidateImageDescriptions( array $insertedLinks, array $deletedLinks ) { |
| 160 | PurgeJobUtils::invalidatePages( |
| 161 | $this->getDB(), NS_FILE, |
| 162 | array_merge( $insertedLinks, $deletedLinks ) ); |
| 163 | } |
| 164 | |
| 165 | /** @inheritDoc */ |
| 166 | protected function virtualDomain() { |
| 167 | return self::VIRTUAL_DOMAIN; |
| 168 | } |
| 169 | } |