1 files changed, 41 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/DataValues/UniquenessConstraintValue.php b/www/wiki/extensions/SemanticMediaWiki/src/DataValues/UniquenessConstraintValue.php
new file mode 100644
index 00000000..5a6545e5
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/DataValues/UniquenessConstraintValue.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace SMW\DataValues;
+
+/**
+ * @license GNU GPL v2+
+ * @since 2.4
+ *
+ * @author mwjames
+ */
+class UniquenessConstraintValue extends BooleanValue {
+
+	/**
+	 * @since 2.4
+	 *
+	 * @param string $typeid
+	 */
+	public function __construct( $typeid = '' ) {
+		parent::__construct( '__pvuc' );
+	}
+
+	/**
+	 * @see DataValue::parseUserValue
+	 *
+	 * @param string $value
+	 */
+	protected function parseUserValue( $userValue ) {
+
+		if ( !$this->isEnabledFeature( SMW_DV_PVUC ) ) {
+			$this->addErrorMsg(
+				[
+					'smw-datavalue-feature-not-supported',
+					'SMW_DV_PVUC'
+				]
+			);
+		}
+
+		parent::parseUserValue( $userValue );
+	}
+
+}