diff --git a/pglablib/catalog/PgLanguage.h b/pglablib/catalog/PgLanguage.h
index fe4a1a4..3178bc8 100644
--- a/pglablib/catalog/PgLanguage.h
+++ b/pglablib/catalog/PgLanguage.h
@@ -24,6 +24,12 @@ public:
 
 	QString createSql() const;
 	QString dropSql() const;
+
+	bool isC() const { return objectName() == "c"; }
+	bool isInternal() const { return objectName() == "internal"; }
+	bool isPlpgsql() const { return objectName() == "plpgsql"; }
+	bool isSql() const { return objectName() == "sql"; }
+
 };
 
 #endif // PGLANGUAGE_H