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<?php
namespace SMW\SQLStore\QueryEngine\DescriptionInterpreters;
use SMW\Query\Language\Description;
use SMW\Query\Language\ThingDescription;
use SMW\SQLStore\QueryEngine\DescriptionInterpreter;
use SMW\SQLStore\QueryEngine\QuerySegment;
use SMW\SQLStore\QueryEngine\QuerySegmentListBuilder;
/**
* @license GNU GPL v2+
* @since 2.2
*
* @author mwjames
*/
class ThingDescriptionInterpreter implements DescriptionInterpreter {
/**
* @var QuerySegmentListBuilder
*/
private $querySegmentListBuilder;
/**
* @since 2.2
*
* @param QuerySegmentListBuilder $querySegmentListBuilder
*/
public function __construct( QuerySegmentListBuilder $querySegmentListBuilder ) {
$this->querySegmentListBuilder = $querySegmentListBuilder;
}
/**
* @since 2.2
*
* @return boolean
*/
public function canInterpretDescription( Description $description ) {
return $description instanceof ThingDescription;
}
/**
* @since 2.2
*
* @param Description $description
*
* @return QuerySegment
*/
public function interpretDescription( Description $description ) {
$query = new QuerySegment();
$query->type = QuerySegment::Q_NOQUERY;
return $query;
}
}
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