java中分页思路

分页：无法sql查询
int offset = 0;
			boolean enoughOver = true;
			for (int i = 0; i < pagesize; i++) {
				Record company = Db.findFirst("", offset++);
				while (!haveSaleActivity(company.getStr("companyguid"))) {
					company = Db.findFirst("", offset++);
					if (company == null) {
						enoughOver = false;
						break;
					}
				}
				
				if (enoughOver) {
					companyGuidList.add(company);
				} else {
					break;
				}
			}