@Override
public void saveRecord(SaleRecord record) {
// 遍历判断书的库存是否不够
for (BookSaleRecord r : record.getBookSaleRecords()) {
String bookId = r.getBook().getID();
Book b = bookDao.find(bookId);
// 当存库不够时,抛出异常
if (Integer.valueOf(r.getTRADE_SUM()) > Integer.valueOf(b.getREPERTORY_SIZE())) {
throw new BusinessException(b.getBOOK_NAME() + " 的库存不够");
}
}
// 先保存交易记录
String id = saleRecordDao.save(record);
// 再保存书的交易记录
for (BookSaleRecord r : record.getBookSaleRecords()) {
// 设置销售记录id
r.setT_SALE_RECORD_ID_FK(id);
bookSaleRecordDao.saveBookSaleRecord(r);
// 修改书的库存
String bookId = r.getBook().getID();
Book b = bookDao.find(bookId);
// 计算剩余的库存
int leave = Integer.valueOf(b.getREPERTORY_SIZE()) - Integer.valueOf(r.getTRADE_SUM());
// 设置库存并将库存数保存到数据库
b.setREPERTORY_SIZE(String.valueOf(leave));
bookDao.updateRepertory(b);
}
}
@Override
// 实现接口方法
public Collection<SaleRecord> getAll(Date date) {
// 得到下一天
Date nextDate = DateUtil.getNextDate(date);
// 得到今天的日期, 格式为yyyy-MM-dd
String today = DateUtil.getDateString(date);
// 得到明天的日期, 格式为yyyy-MM-dd
String tomorrow = DateUtil.getDateString(nextDate);
Collection<SaleRecord> records = saleRecordDao.findByDate(today, tomorrow);
for (SaleRecord r : records) {
processDatas(r);
}
return records;
}
@Override
public SaleRecord get(String id) {
SaleRecord r = saleRecordDao.findById(id);
return processDatas(r);
}