How to get the full file path when use "Upload" component

Does anybody know how to get the full file path when I use “Upload” component.

I have one scenario that user need locate one file in the client system and save the file absolute path into DB. I am trying approach this by “Upload”. After I set the Immediate Mode to be false, I could see that the full file path are shown in the page. but the problem is that there is no such API to get the file path.

Does anybody know how to achieve this? or any other idea?
Thanks any help from you.