package com.chinasofti.dao;

import com.chinasofti.model.BookCopy;
import java.util.List;

public interface BookCopyDAO {
    List<BookCopy> selectByBookId(Long bookId);
    BookCopy selectAvailableByBookId(Long bookId); // 获取一个可借副本
    int updateStatus(Long copyId, String status);
    int insert(BookCopy copy);
    int countAvailableByBookId(Long bookId);
}