@Transactional
public List<ReadingHistory> getUserReadingHistorys(User user) {
List<ReadingHistory> list = new ArrayList<ReadingHistory>();
if (user != null) {
int effectRows = this.rhDao.deleteReadingHistoryBooksByUserid(user.getUserid());
// 清除历史数据成功
if (effectRows >= 1) {
log.info("清除用户:" + user.getUsername() + "历史阅读数据");
}
// 不管取到有没有值，都会返回list的实例对象，只不过有可能是空的
list = rhDao.findReadingHistoryBookByUserid(user.getUserid());
}
return list;
}
@Service
public class ReadingHistoryService implements Serializable {
/** */
private static final long serialVersionUID = -5349990569168253452L;
private static Logger log = Logger.getLogger(ReadingHistoryService.class);
@Resource private ReadingHistoryDao rhDao;
@Resource private BookDao bookDao;
@Transactional
public List<ReadingHistory> getUserReadingHistorys(User user) {
List<ReadingHistory> list = new ArrayList<ReadingHistory>();
if (user != null) {
int effectRows = this.rhDao.deleteReadingHistoryBooksByUserid(user.getUserid());
// 清除历史数据成功
if (effectRows >= 1) {
log.info("清除用户:" + user.getUsername() + "历史阅读数据");
}
// 不管取到有没有值，都会返回list的实例对象，只不过有可能是空的
list = rhDao.findReadingHistoryBookByUserid(user.getUserid());
}
return list;
}
@Transactional
public List<Book> getUserBooks(User user) {
List<Book> books = new ArrayList<Book>();
if (user == null) {
return books;
}
List<ReadingHistory> list = this.getUserReadingHistorys(user);
for (ReadingHistory r : list) {
books.add(this.bookDao.findBookByBookid(r.getBookid()));
}
return books;
}
@Transactional
public List<ReadingHistoryBook> getUserReadingHistoryBooks(User user) {
List<ReadingHistoryBook> readHistoryBooks = new ArrayList<ReadingHistoryBook>();
if (user == null) {
return readHistoryBooks;
}
List<ReadingHistory> list = this.getUserReadingHistorys(user);
for (ReadingHistory r : list) {
ReadingHistoryBook rhBook = new ReadingHistoryBook();
Book b = this.bookDao.findBookByBookid(r.getBookid());
rhBook.setBook(b);
rhBook.setReadingHistory(r);
readHistoryBooks.add(rhBook);
}
return readHistoryBooks;
}
@Transactional
public int addReadingHistoryBook(ReadingHistory readingHistory) {
if (readingHistory == null) {
return 0;
}
return this.rhDao.insertReadingHistoryBook(readingHistory);
}
public int getReadingHistoryCount(String userid, String bookid) {
return this.rhDao.findAllReadCount(userid, bookid);
}
}