DFS UCF import file

millyli

I tried the DFS UCF transfer mode to import files according to the DFS development guide. The Applet initialized the session and uid , then submit them to the servlet to invoke the UCF connection with browser client. It was workable. But I was wondering how to combine the two process into one action. That mean after Applet get the sessionId and Uid, then (render or submit)submit to servlet automatically. But how to do this? Can I invoke servlet in the applet? Must I import files like the sample? It would be appreciated if you could give me some advice or give me some JSP & JAVA example code.

Thanks a lot!

Oleg

Ok, so I assume you have UCF working as described in the “Client orchestrated UCF transfer” section of the DFS 6.5 Dev Guide: you have an applet to retrieve a UCF session id using UcfConnection and an HTML form to submit it to the server-side, where DFS invocation takes place.

Figure 19, “Topology with web application and service on separate hosts” on page 156 of the guide describes how exactly UCF works in this environment. As you can see, the UFC connection has to be established from the client’s browser. This is the reason why the applet is required to run in the browser – it initiates the UCF connection. From that point on you can decide yourself what you wish to do: you can submit these values to the server-side from within the applet. Unfortunately, this creates a tight coupling between the applet and the action you are performing (you have to submit to a specific URL in a specific way). OR you can make the applet very generic so that it’s only purpose is to establish the UCF connection and leave action specific details to the HTML/JSP/ASP/etc page. Our recommendation is to have a generic applet as it’s easier to maintain and understand.

Hope it makes sense. Please let me know if you need further clarifications.