// test a native sql execute - remove all persons
DbConnection con = manager.getPool().getConnection();
con.createStatement("DELETE FROM $db.Person$", null ).execute(manager.getNameMapping());
con.commit();
System.out.println("----------------------");
col = manager.executeQuery(new Person(), "select * from $db.Person$", null);
count = 0;
for (Person pp : col) {