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<?php
namespace SMW\SPARQLStore\QueryEngine\Condition;
use SMWExpElement;
/**
* A SPARQL condition that can match only a single element, or nothing at all.
*
* @ingroup SMWStore
*
* @license GNU GPL v2+
* @since 1.6
*
* @author Markus Krötzsch
*/
class SingletonCondition extends Condition {
/**
* Pattern string. Anything that can be used as a WHERE condition
* when put between "{" and "}". Can be empty if the result
* unconditionally is the given element.
* @var string
*/
public $condition;
/**
* The single element that this condition may possibly match.
* @var SMWExpElement
*/
public $matchElement;
/**
* Whether this condition is safe.
* @see SMWSparqlCondition::isSafe().
* @var boolean
*/
public $isSafe;
public function __construct( SMWExpElement $matchElement, $condition = '', $isSafe = false, $namespaces = [] ) {
$this->matchElement = $matchElement;
$this->condition = $condition;
$this->isSafe = $isSafe;
$this->namespaces = $namespaces;
}
public function getCondition() {
return $this->condition;
}
public function isSafe() {
return $this->isSafe;
}
}
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