public int getBookCountByBookIdFromDatabase(String _idBook)
{
return(m_BookDAL.getBookCountByBookIdFromDatabase(_idBook));
}
//Ham tinh ra so sach toi da co the ban
public int getCountBookMaxCanSale(String _idBook)
{
return(m_BookDAL.getBookCountByBookIdFromDatabase(_idBook) - m_RegulationsDAL.getRegulationsDataByRuleFromDatabase("SoLuongTonToiThieuSauBan"));
}