command1.execute();
if(!command1.isExist())
throw new KeyNotExistException(id, db, key);
ListZSet command = new ListZSet(id, db, key);
command.execute();
return command.getValues();
}
public Set<Tuple> getPage(int id, int db, String key, int start, int end){
ListZSetPage command = new ListZSetPage(id, db, key, start, end);
command.execute();