private IEnumerable<string> _Iterate(GroupAddressInstance ga)
{
switch (Kind)
{
case FilterKinds.GroupAddress:
return IterateGroupAddresses(ga);
case FilterKinds.GroupAddressDescription:
return IterateGroupAddressDescriptions(ga);
default:
throw new NotImplementedException("Filter Kind is not valid");
}
}
private static IEnumerable<string> IterateGroupAddressDescriptions(GroupAddressInstance ga)
{
if (ga.Ref == null)
yield break;
yield return ga.Ref.Name;
if (ga.Ref.ParentRange == null)
yield break;
yield return ga.Ref.ParentRange.Name;
yield return ga.Ref.ParentRange.Description;
if (ga.Ref.ParentRange.ParentRange == null)
yield break;
yield return ga.Ref.ParentRange.ParentRange.Name;
yield return ga.Ref.ParentRange.ParentRange.Description;
}
private static IEnumerable<string> IterateGroupAddresses(GroupAddressInstance ga)
{
if (ga.Ref == null)
yield break;
yield return ga.Ref.ToString();
}
public IEnumerable<string> Iterate(GroupAddressInstance obj)
{
return _Iterate(obj).Where(row => !string.IsNullOrEmpty(row));
}