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<?php namespace MediaWiki\Deferred\LinksUpdate; use HTMLCacheUpdateJob; use JobQueueGroup; use MediaWiki\Config\ServiceOptions; use MediaWiki\MainConfigNames; use MediaWiki\Parser\ParserOutput; /** * page_props * * Link ID format: string[] * 0: Property name (pp_propname) * 1: Property value (pp_value) * * @since 1.38 */ class PagePropsTable extends LinksTable { /** @var JobQueueGroup */ private $jobQueueGroup; /** @var array */ private $newProps = []; /** @var array|null */ private $existingProps; /** * The configured PagePropLinkInvalidations. An associative array where the * key is the property name and the value is a string or array of strings * giving the link table names which will be used for backlink cache * invalidation. * * @var array */ private $linkInvalidations; public const CONSTRUCTOR_OPTIONS = [ MainConfigNames::PagePropLinkInvalidations ]; public function __construct( ServiceOptions $options, JobQueueGroup $jobQueueGroup ) { $this->jobQueueGroup = $jobQueueGroup; $options->assertRequiredOptions( self::CONSTRUCTOR_OPTIONS ); $this->linkInvalidations = $options->get( MainConfigNames::PagePropLinkInvalidations ); } public function setParserOutput( ParserOutput $parserOutput ) { $this->newProps = $parserOutput->getPageProperties(); } protected function getTableName() { return 'page_props'; } protected function getFromField() { return 'pp_page'; } protected function getExistingFields() { return [ 'pp_propname', 'pp_value' ]; } protected function getNewLinkIDs() { foreach ( $this->newProps as $name => $value ) { yield [ (string)$name, $value ]; } } /** * Get the existing page_props as an associative array * * @return array */ private function getExistingProps() { if ( $this->existingProps === null ) { $this->existingProps = []; foreach ( $this->fetchExistingRows() as $row ) { $this->existingProps[$row->pp_propname] = $row->pp_value; } } return $this->existingProps; } protected function getExistingLinkIDs() { foreach ( $this->getExistingProps() as $name => $value ) { yield [ (string)$name, $value ]; } } protected function isExisting( $linkId ) { $existing = $this->getExistingProps(); [ $name, $value ] = $linkId; return \array_key_exists( $name, $existing ) && $this->encodeValue( $existing[$name] ) === $this->encodeValue( $value ); } protected function isInNewSet( $linkId ) { [ $name, $value ] = $linkId; return \array_key_exists( $name, $this->newProps ) && $this->encodeValue( $this->newProps[$name] ) === $this->encodeValue( $value ); } private function encodeValue( $value ) { if ( is_bool( $value ) ) { return (string)(int)$value; } elseif ( $value === null ) { return ''; } else { return (string)$value; } } protected function insertLink( $linkId ) { [ $name, $value ] = $linkId; $this->insertRow( [ 'pp_propname' => $name, 'pp_value' => $this->encodeValue( $value ), 'pp_sortkey' => $this->getPropertySortKeyValue( $value ) ] ); } /** * Determines the sort key for the given property value. * This will return $value if it is a float or int, * 1 or resp. 0 if it is a bool, and null otherwise. * * @note In the future, we may allow the sortkey to be specified explicitly * in ParserOutput::setPageProperty (T357783). * * @param mixed $value * * @return float|null */ private function getPropertySortKeyValue( $value ) { if ( is_int( $value ) || is_float( $value ) || is_bool( $value ) ) { return floatval( $value ); } return null; } protected function deleteLink( $linkId ) { $this->deleteRow( [ 'pp_propname' => $linkId[0] ] ); } protected function finishUpdate() { $changed = array_unique( array_merge( array_column( $this->insertedLinks, 0 ), array_column( $this->deletedLinks, 0 ) ) ); $this->invalidateProperties( $changed ); } /** * Invalidate the properties given the list of changed property names * * @param string[] $changed */ private function invalidateProperties( array $changed ) { $jobs = []; foreach ( $changed as $name ) { if ( isset( $this->linkInvalidations[$name] ) ) { $inv = $this->linkInvalidations[$name]; if ( !is_array( $inv ) ) { $inv = [ $inv ]; } foreach ( $inv as $table ) { $jobs[] = HTMLCacheUpdateJob::newForBacklinks( $this->getSourcePage(), $table, [ 'causeAction' => 'page-props' ] ); } } } if ( $jobs ) { $this->jobQueueGroup->lazyPush( $jobs ); } } /** * Get the properties for a given link set as an associative array * * @param int $setType The set type as in LinksTable::getLinkIDs() * @return array */ public function getAssocArray( $setType ) { $props = []; foreach ( $this->getLinkIDs( $setType ) as [ $name, $value ] ) { $props[$name] = $value; } return $props; } }
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