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<?php
namespace MediaWiki\Deferred\LinksUpdate;
use MediaWiki\Parser\ParserOutput;
/**
* iwlinks
*
* Link ID format: string[]
* - 0: Interwiki prefix
* - 1: Foreign title
*
* @since 1.38
*/
class InterwikiLinksTable extends LinksTable {
/** @var array */
private $newLinks = [];
/** @var array|null */
private $existingLinks;
public function setParserOutput( ParserOutput $parserOutput ) {
$this->newLinks = $parserOutput->getInterwikiLinks();
}
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 ];
}
}
}
/**
* Get the existing links as a 2-d array, with the prefix in the first key,
* the title in the second key, and the value arbitrary.
*
* @return array|null
*/
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
] );
}
}
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