/// <summary>
/// role不能为null，且role.Id必须大于0。
/// 若计算得出role.Id没有对应的数据， 抛异常
/// </summary>
public int UpdateRole(Role role, List<long> powerIds)
{
CheckRoleNotNull(role);
CheckRoleIdGreatThan0(role.Id);
Role r = GetRole(new Role() { Id = role.Id, });
CheckRoleNotNull(r);
foreach (var field in typeof(Role).GetProperties()) // 修改角色信息
{
field.SetValue(r, field.GetValue(role));
}
dbContext.Entry(r).State = EntityState.Modified;
var oldrps = from RolePower in dbContext.RolePowers // 删除旧权限
where RolePower.RoleId == role.Id
select RolePower;
foreach (RolePower rp in oldrps)
{
dbContext.Entry(rp).State = EntityState.Deleted;
}
foreach (long powerId in powerIds) // 新增权限
{
RolePower rp = new RolePower()
{
// Id
RoleId = role.Id,
PowerId = powerId,
};
dbContext.RolePowers.Add(rp);
dbContext.Entry(rp).State = EntityState.Added;
}
return dbContext.SaveChanges();
}
/// <summary>
/// role不能为null, 且role.Id必须大于0
/// powerIds：给角色分配的权限(若不是全部存在， 抛异常)
/// </summary>
public void UpdateRole(Role role, List<long> powerIds)
{
CheckRoleNotNull(role);
CheckRoleIdGreatThan0(role.Id);
// CheckPowerIdsAllExist(powerIds);
dal.UpdateRole(role, powerIds);
}
/// <summary>
/// role不能为null。优先匹配Id, 再匹配Name
/// </summary>
public Role GetRole(Role role)
{
CheckRoleNotNull(role);
var r = from Role in dbContext.Roles
where Role.Id == role.Id || Role.Name == role.Name
select Role;
return r.FirstOrDefault();
}
/// <summary>
/// 新增角色时，分配权限（权限若不是全存在， 抛异常）
/// </summary>
public void AddRole(Role role, List<long> powerIds)
{
CheckRoleNotNull(role);
if (role.Id != default(long))
{
throw new Exception("不能为role赋值");
}
CheckPowerIdsAllExist(powerIds);
dal.AddRole(role, powerIds);
}
/// <summary>
/// role不能为Null, 只需对Id值赋值即可
/// </summary>
public List<RolePower> GetRolePowersByRole(Role role)
{
if (role == null || role.Id <= default(long))
{
throw new Exception("参数power非法");
}
var roles = from RolePower in dbContext.RolePowers
where RolePower.RoleId == role.Id
select RolePower;
return roles.ToList();
}
/// <summary>
/// 新增角色时，分配权限
/// </summary>
public int AddRole(Role role, List<long> powerIds)
{
CheckRoleNotNull(role);
dbContext.Roles.Add(role);
dbContext.Entry(role).State = EntityState.Added; // 新增角色
foreach (long powerId in powerIds)
{
RolePower rp = new RolePower()
{
// Id
RoleId = role.Id,
PowerId = powerId,
};
dbContext.RolePowers.Add(rp);
dbContext.Entry(rp).State = EntityState.Added; // 分配权限
}
return dbContext.SaveChanges();
}
/// <summary>
/// roleId值必须大于0
/// </summary>
public bool DeleteRole(long roleId)
{
CheckRoleIdGreatThan0(roleId);
Role role = new Role() { Id = roleId, };
int row = dal.DeleteRole(role);
if (row != 1)
{
AddLog(role, "删除角色发生错误");
}
return row == 1;
}
private void AddLog(Role role, string description)
{
ILog logger = LogManager.GetLogger(typeof(RoleBLL));
logger.Error(role, new Exception(string.Format("\r\n\r\n{0}", description)));
}
private void CheckRoleNotNull(Role role)
{
if (role == null)
{
throw new ArgumentNullException("参数role不能为null");
}
}
/// <summary>
/// role不能为null, 且role.Id必须大于0
/// </summary>
public int DeleteRole(Role role)
{
CheckRoleNotNull(role);
CheckRoleIdGreatThan0(role.Id);
/*List<RolePower> rps = rolePowerDAL.GetRolePowersByRole(role);
foreach (RolePower rp in rps)
{
dbContext.Entry(rp).State = EntityState.Deleted;
}*/
dbContext.Entry(role).State = EntityState.Deleted;
return dbContext.SaveChanges();
}