1 files changed, 35 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/QueryEngine.php b/www/wiki/extensions/SemanticMediaWiki/src/QueryEngine.php
new file mode 100644
index 00000000..b25541c2
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/QueryEngine.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace SMW;
+
+use SMWQuery as Query;
+use SMWQueryResult as QueryResult;
+
+/**
+ * Interface for query answering that depend on concrete implementations to
+ * provide the filtering and matching process for specific conditions against a
+ * select back-end.
+ *
+ * @license GNU GPL v2+
+ * @since 2.5
+ *
+ * @author mwjames
+ */
+interface QueryEngine {
+
+	/**
+	 * Returns a QueryResult object that matches the condition described by a
+	 * query.
+	 *
+	 * @note If the request was made for a debug (querymode MODE_DEBUG) query
+	 * then a simple HTML-compatible string is returned.
+	 *
+	 * @since 2.5
+	 *
+	 * @param Query $query
+	 *
+	 * @return QueryResult|string
+	 */
+	public function getQueryResult( Query $query );
+
+}