// else then we don't really care. It will show up in
// the evaluator as a non-all member and trigger the
// join when we call RolapNativeSet.isJoinRequired().
final AtomicBoolean mustJoin = new AtomicBoolean(false);
filterExpr.accept(
new MdxVisitorImpl() {
public Object visit(MemberExpr memberExpr) {
if (memberExpr.getMember().isMeasure()) {
mustJoin.set(true);
return null;
}