1 files changed, 55 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/SPARQLStore/QueryEngine/Condition/SingletonCondition.php b/www/wiki/extensions/SemanticMediaWiki/src/SPARQLStore/QueryEngine/Condition/SingletonCondition.php
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+++ b/www/wiki/extensions/SemanticMediaWiki/src/SPARQLStore/QueryEngine/Condition/SingletonCondition.php
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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;
+	}
+
+}