TitleCondition.php
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TitleCondition.php
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	<?php

	namespace MediaWiki\RecentChanges\ChangesListQuery;

	use MediaWiki\Linker\LinkTarget;
	use MediaWiki\Page\PageReference;
	use stdClass;
	use Wikimedia\Rdbms\IReadableDatabase;
	use Wikimedia\Rdbms\RawSQLExpression;

	/**
	* A condition matching a set of titles
	*
	* @since 1.45
	*/
	class TitleCondition extends ChangesListConditionBase {

	/**
	* @param LinkTarget\|PageReference $value
	* @return TitleConditionValue
	*/
	public function validateValue( $value ) {
	return TitleConditionValue::create( $value );
	}

	/** @inheritDoc */
	public function evaluate( stdClass $row, $value ): bool {
	return (int)$row->rc_namespace === $value->namespace
	&& $row->rc_title === $value->dbKey;
	}

	/** @inheritDoc */
	protected function prepareCapture( IReadableDatabase $dbr, QueryBackend $query ) {
	$query->fields( [ 'rc_namespace', 'rc_title' ] );
	}

	/** @inheritDoc */
	protected function prepareConds( IReadableDatabase $dbr, QueryBackend $query ) {
	[ $required, $excluded ] = $this->getUniqueValues();
	if ( $required === [] ) {
	$query->forceEmptySet();
	} elseif ( $required ) {
	$query->where(
	new RawSQLExpression(
	'(' .
	$dbr->makeWhereFrom2d(
	TitleConditionValue::makeSet( $required ),
	'rc_namespace',
	'rc_title'
	) . ')'
	)
	);
	} elseif ( $excluded ) {
	$query->where(
	new RawSQLExpression(
	'NOT (' .
	$dbr->makeWhereFrom2d(
	TitleConditionValue::makeSet( $excluded ),
	'rc_namespace',
	'rc_title'
	) . ')'
	)
	);
	}
	}
	}