File adapter, trigger if no file is polled for pre-defined time

Hi',
I am polling for a file in a directory, my requirement is to notify by a email
if no file is polled for 1 hour or so, i.e. if no file comes in that directory for
long time.
Is there a way we can achieve this, I tried using a pick activity instead of
receive, however it does not allow on-alarm in this condition.
Please advice.
Thanks
Yatan

If you dont want to use database then you can do with your files as well, if at all you are archieving the files.
Say as soon as i get the files in the folder the adapter will read its content and then move it to archive folder, then you can have a logic to list the file and get the timestamp of the latest file from archive and compare with current time stamp and that will trigger a mail.
You can achive the above using API.
Thanks,
Vijay

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