1 files changed, 47 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/Query/Language/ThingDescription.php b/www/wiki/extensions/SemanticMediaWiki/src/Query/Language/ThingDescription.php
new file mode 100644
index 00000000..3419df19
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/Query/Language/ThingDescription.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace SMW\Query\Language;
+
+/**
+ * A dummy description that describes any object. Corresponds to
+ * owl:thing, the class of all abstract objects. Note that it is
+ * not used for datavalues of attributes in order to support type
+ * hinting in the API: descriptions of data are always
+ * ValueDescription objects.
+ *
+ * @license GNU GPL v2+
+ * @since 1.6
+ *
+ * @author Markus Krötzsch
+ */
+class ThingDescription extends Description {
+
+	public function getQueryString( $asValue = false ) {
+		return $asValue ? ( isset( $this->isNegation ) ? '!' : '' ) . '+' : '';
+	}
+
+	public function isSingleton() {
+		return false;
+	}
+
+	public function getSize() {
+		return 0; // no real condition, no size or depth
+	}
+
+	public function prune( &$maxsize, &$maxdepth, &$log ) {
+		return $this;
+	}
+
+	/**
+	 * @see Description::getFingerprint
+	 * @since 2.5
+	 *
+	 * @return string
+	 */
+	public function getFingerprint() {
+		// Avoid a simple 0 which may interfere with an associative array
+		// when compounding hash strings from different descriptions
+		return 'T:' . md5( 0 ) . ( isset( $this->isNegation ) ? '!' : '' );
+	}
+
+}