problems returning a resultset from a function

hi.

I have a problem with postgres functions.
I need return a resultset from a postgres function and
browse the resultset in a java app.
I try with this simple function:

create function test() returns catalog.refcursor as'
declare aux refcursor;
BEGIN
OPEN aux FOR SELECT name, address FROM table;
RETURN aux;
END;
'LANGUAGE 'plpgsql';

and the java

CallableStatement cs = null;
ResultSet rs = null;
cs = con.prepareCall("{ ? = call test()}");
cs.registerOutParameter(1, java.sql.Types.OTHER);
rs = cs.executeQuery();
rs.next();
System.out.println("name: " +rs.getString(1));

but throws te following error:

cursor "<unnamed portal 1>" does not exist

I try this too:

Statement s = null;
rs = s.executeQuery("select test()");
rs.next();
System.out.println("name: " +rs.getString(1));

and don't throws an error, but show me the following
result:

name: <unnamed portal 1>

anybody can help me with this?

thnx;

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