public UserRole(User user, Role role)
{
if (user == null)
{
throw new ArgumentNullException("user");
}
if (role == null)
{
throw new ArgumentNullException("role");
}
User = user;
Role = role;
}
private void FixupRole(Role previousValue)
{
if (previousValue != null && previousValue.UsersInRoles.Contains(this))
{
previousValue.UsersInRoles.Remove(this);
}
if (Role != null)
{
if (!Role.UsersInRoles.Contains(this))
{
Role.UsersInRoles.Add(this);
}
if (RoleId != Role.Id)
{
RoleId = Role.Id;
}
}
}
/// <summary>
/// Adds the role.
/// </summary>
/// <param name="role">The role.</param>
public void AddRole(Role role)
{
if (role == null)
throw new BusinessException("Role must be specified.");
if (UserRoles.Select(ur => ur.Role.Id).Contains(role.Id))
throw new BusinessException("User is already assigned to role: " + role.RoleName);
UserRoles.Add(new UserRole(this, role));
}