Remote JFileChooser

Question

Hi all,
I think this topic could be of common interest. I try to implement a remote JFileChooser with RMI.
I created a MyFileSystemView class on the client that extends FileSystemView and I also overwrote all methods, so that they delegate each call to a RemoteObject on the Server. This RemoteObject uses the class methods of:
- return FileSystemView.getFileSystemView().getHomeDirectory(); and returns a file.
Everything works fine when I run it on the same maschine, but If I separate it on a client and server I only get plain files(no directories) and I can not navigate at all.
My question is:
- Is it necessary to also implement the parameter File as an RemoteObject, like RemoteFile or just to implement a RemoteObject like RemoteFileView?
- another question is: I wrote some comments about some of the people are passing the whole JFileChooser from the Server to the client. Is it not sufficient to only exchange the FileSystemView class and the the FileView class?
Thanks for your time and effort!
best regards,
Gekko

Answer 1

I have written the following code in RemoteFileSystemView class (referred in the thread mentioned above).
public static void main(String args[])
          try {
          RemoteFileSystemView fsv = new RemoteFileSystemView(args[0]);
          JFileChooser fc;
          fc = new JFileChooser(new File("."), fsv);
          fc.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
          int status = fc.showDialog(null,"Select File");
          if (status == JFileChooser.APPROVE_OPTION)
               System.out.println(fc.getSelectedFile().getPath());
          catch(Exception e)
               System.out.println("Exception:"+e.getMessage());
               e.printStackTrace();
     }It is giving me the following errors:
Feb 24, 2013 8:28:25 PM RemoteFileSystemView getHomeDirectory
SEVERE: getHomeDirectory()
java.rmi.NoSuchObjectException: no such object in table
I suppose RemoteFileSystemView is the clientside program and RemoteFileSystemServer and RemoteFileSystem are on the serverside. I do not know how to specify the current directory path in the JFileChooser constructor. Could someone guide me? And client is not supposed to know the exact path to the server machine. Then how do we make the current directory to be the server's documents directory? And am I going wrong some where?