InterwikiLinksTable.php

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<?php
 
namespace MediaWiki\Deferred\LinksUpdate;
 
use MediaWiki\Parser\ParserOutput;
use MediaWiki\Parser\ParserOutputLinkTypes;
 
class InterwikiLinksTable extends LinksTable {
    public const VIRTUAL_DOMAIN = 'virtual-interwikilinks';
 
    private $newLinks = [];
 
    private $existingLinks;
 
    public function setParserOutput( ParserOutput $parserOutput ) {
        $this->newLinks = [];
        foreach (
            $parserOutput->getLinkList( ParserOutputLinkTypes::INTERWIKI )
            as [ 'link' => $link ]
        ) {
            $this->newLinks[$link->getInterwiki()][$link->getDBkey()] = 1;
        }
    }
 
    protected function getTableName() {
        return 'iwlinks';
    }
 
    protected function getFromField() {
        return 'iwl_from';
    }
 
    protected function getExistingFields() {
        return [ 'iwl_prefix', 'iwl_title' ];
    }
 
    protected function getNewLinkIDs() {
        foreach ( $this->newLinks as $prefix => $links ) {
            foreach ( $links as $title => $unused ) {
                yield [ (string)$prefix, (string)$title ];
            }
        }
    }
 
    private function getExistingLinks() {
        if ( $this->existingLinks === null ) {
            $this->existingLinks = [];
            foreach ( $this->fetchExistingRows() as $row ) {
                $this->existingLinks[$row->iwl_prefix][$row->iwl_title] = true;
            }
        }
        return $this->existingLinks;
    }
 
    protected function getExistingLinkIDs() {
        foreach ( $this->getExistingLinks() as $prefix => $links ) {
            foreach ( $links as $title => $unused ) {
                yield [ (string)$prefix, (string)$title ];
            }
        }
    }
 
    protected function isExisting( $linkId ) {
        $links = $this->getExistingLinks();
        [ $prefix, $title ] = $linkId;
        return isset( $links[$prefix][$title] );
    }
 
    protected function isInNewSet( $linkId ) {
        [ $prefix, $title ] = $linkId;
        return isset( $this->newLinks[$prefix][$title] );
    }
 
    protected function insertLink( $linkId ) {
        [ $prefix, $title ] = $linkId;
        $this->insertRow( [
            'iwl_prefix' => $prefix,
            'iwl_title' => $title
        ] );
    }
 
    protected function deleteLink( $linkId ) {
        [ $prefix, $title ] = $linkId;
        $this->deleteRow( [
            'iwl_prefix' => $prefix,
            'iwl_title' => $title
        ] );
    }
 
    protected function getVirtualDomain() {
        return self::VIRTUAL_DOMAIN;
    }
}