@@ -0,0 +1,223 @@
+package foam.core;%0A%0Aimport foam.dao.DAO;%0Aimport foam.dao.Sink;%0A%0Aimport java.io.IOException;%0A%0A// TODO(drish): use Index interface.%0Apublic interface Journal extends Sink %7B%0A    public void replay(DAO dao) throws IOException;%0A%7D

create Journal interface