--- Khawaja Shams <[EMAIL PROTECTED]> wrote: > Hello all, > I am curious if anyone has ever had to write a > servlet that listens for > new files on the server and processes them upon > appearence. Basically, I > need to write a server side program that detects > when (our automated > process) delivers a file to the server filesystem > and then process the > file. I would sincerely appreciate any pointers on > how this can be > accomplished from within tomcat. > > > Happy Holidays. > > > Sincerely, > Khawaja Shams >
My theory is always copy something that is working now. Go to www.netbeans.org,download a source zip as available here (http://www.netbeans.info/downloads/download.php?a=n&p=2) ... maybe choose a daily build ... keep following the arrows eventually you'll get to the download and be able to select a source download...that or figure out how to use their CVS repository, and then follow the source directory structure to the directory (relative obviously): openide\fs\src\org\openide\filesystems see the files: FileChangeListener.java FileChangeAdapter.java FileEvent.java AbstractFolder.java (this actually has the code to watch the directory) also the tomcat code watches directory contents and files as well. I don't know exactly where, but you'll be looking for code that watches the webapps directory for .war files and possibly other files. Auto-deploy of war files works this way. Anyways, all you're doing is watching a directory for files and storing previous states so you can compare later to see what has happened. You could store state in a DB and use SQL to determine changes or store it in memory. This will all depend on what you need ... speed vs. memory usage. SQL and connections obviously slower than an in memory map, but it should save you on always keeping your memory used. Hope it helps, Wade --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
