1 files changed, 111 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/SQLStore/PropertyTypeFinder.php b/www/wiki/extensions/SemanticMediaWiki/src/SQLStore/PropertyTypeFinder.php
new file mode 100644
index 00000000..f65c8e7b
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/SQLStore/PropertyTypeFinder.php
@@ -0,0 +1,111 @@
+<?php
+
+namespace SMW\SQLStore;
+
+use RuntimeException;
+use SMW\DIProperty;
+use SMW\MediaWiki\Database;
+
+/**
+ * @private
+ *
+ * @license GNU GPL v2+
+ * @since 2.5
+ *
+ * @author mwjames
+ */
+class PropertyTypeFinder {
+
+	/**
+	 * @var Database
+	 */
+	private $connection;
+
+	/**
+	 * @var string
+	 */
+	private $typeTableName = '';
+
+	/**
+	* @since 2.5
+	*
+	* @param Database $connection
+	*/
+	public function __construct( Database $connection ) {
+		$this->connection = $connection;
+	}
+
+	/**
+	* @since 2.5
+	*
+	* @param string $typeTableName
+	*/
+	public function setTypeTableName( $typeTableName ) {
+		$this->typeTableName = $typeTableName;
+	}
+
+	/**
+	* @since 2.5
+	*
+	* @param DIProperty $property
+	*
+	* @return string
+	* @throws RuntimeException
+	*/
+	public function findTypeID( DIProperty $property ) {
+
+		try {
+			$row = $this->connection->selectRow(
+				SQLStore::ID_TABLE,
+				[
+					'smw_id'
+				],
+				[
+					'smw_namespace' => SMW_NS_PROPERTY,
+					'smw_title' => $property->getKey(),
+					'smw_iw' => '',
+					'smw_subobject' => ''
+				],
+				__METHOD__
+			);
+		} catch ( \Exception $e ) {
+			$row = false;
+		}
+
+		if ( !isset( $row->smw_id ) ) {
+			return $GLOBALS['smwgPDefaultType'];
+		}
+
+		if ( $this->typeTableName === '' ) {
+			throw new RuntimeException( "Missing a table name" );
+		}
+
+		// The Finder is executed before tables are initialized with a corresponding
+		// and matchable DIHandler therefore using Store::getPropertyValue cannot
+		// be used at this point as it would create a circular reference during
+		// the table initialization.
+		//
+		// We expect it to be a URI table with `o_serialized` containing the
+		// type string
+		$row = $this->connection->selectRow(
+			$this->typeTableName,
+			[
+				'o_serialized'
+			],
+			[
+				's_id' => $row->smw_id
+			],
+			__METHOD__
+		);
+
+		if ( $row === false ) {
+			return $GLOBALS['smwgPDefaultType'];
+		}
+
+		// e.g. http://semantic-mediawiki.org/swivt/1.0#_num
+		list( $url, $fragment ) = explode( "#", $row->o_serialized );
+
+		return $fragment;
+	}
+
+}