Re: Which application uses GNU JavaMail ?

Chris,

The exception is thrown on the indicated line:

  in getSharedNamespaces (IMAPStore.java)

         try
           {
             Namespaces ns =3D connection.namespace();
             if (ns =3D=3D null)
               {
                 throw new MethodNotSupportedException("IMAP =20
NAMESPACE " +
                                                        "command not =20
supported");
               }
             Namespaces.Namespace[] n =3D ns.getShared();
-->       Folder[] f =3D new Folder[n.length];
             for (int i =3D 0; i < n.length; i++)
               {
                 String prefix =3D n[i].getPrefix();
                 char delimiter =3D n[i].getDelimiter();
                 f[i] =3D new IMAPFolder(this, prefix, delimiter);
               }
             return f;
           }
         catch (IOException e)
           {
             throw new MessagingException(e.getMessage(), e);
           }


I modified the code not to open the folder. Now I start to see some =20
IMAP folders. However it seems that listing of a non default folder =20
returns itself as subfolder. Which make the recursive listing of =20
folders enter a loop.

Here is a test that could show the loop, if you want to try it.

This may be solved in the CVS_HEAD version that I will check ASAP. =20
Could you give me the cvs server connection info and the module list ?

Thanks,
Cedric

--------
	private Store connect() throws MessagingException {
	=09
		Properties props =3D new Properties();
		Store store;
		Session session;
		session =3D Session.getDefaultInstance(props, null);
	=09
		session.setDebug(true);
		store =3D session.getStore("imap");
		store.connect(host, username, password);
		return store;
	}
	private void listSubFolders(Folder folder, boolean recurse) =
throws =20
MessagingException {
		System.out.println("Folder " + folder.getFullName() + " =
type is " + =20
folder.getType());
		if ((folder.getType() & Folder.HOLDS_FOLDERS) =3D=3D 0) =
{
		=09
			System.out.println("Folder " + =
folder.getFullName() + " cannot =20
contain subfolders.");
			return;
		}
		System.out.println("Listing sub folders of " + =
folder.getFullName());
		listFolders(folder.list(), recurse);
	}	=09
=09
	private void listFolders(Folder[]array, boolean recurse) throws =20=

MessagingException {
		for (int i =3D 0 ; i < array.length ; i++) {
			Folder folder =3D array[i];
			System.out.println("Found folder " =
+folder.getFullName());
			if (recurse) {
				listSubFolders(folder, recurse);
			}
		}
	}
=09
=09
	public void testFolderList() throws MessagingException {
		Store store =3D connect();
		Folder folder =3D store.getDefaultFolder();
		listSubFolders(folder, true);
	}


Le 11 f=C3=A9vr. 06 =C3=A0 19:49, Chris Burdess a =C3=A9crit :

> Cedric Hyppolite wrote:
>> Here is a test that shows the issues and the log. I cut the =20
>> irrelevant part of the stack trace.
>> I ran this test under MacOSX with Eclipse compiler and SUN JVM 1.4.2.
>
> See my comments below.
>
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D TestCase =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D
>> import java.util.Properties;
>>
>> import javax.mail.Folder;
>> import javax.mail.MessagingException;
>> import javax.mail.Session;
>> import javax.mail.Store;
>>
>> import junit.framework.TestCase;
>>
>> public class IMAPFolderTest extends TestCase {
>> 	public void testIMAPFolder() throws MessagingException {
>> 		String host =3D "XXX";	=09
>> 		String username =3D "XXX";
>> 		String password =3D "XXX";
>> 	=09
>> 		Properties props =3D new Properties();
>> 		Store store;
>> 		Session session;
>> 		session =3D Session.getDefaultInstance(props, null);
>> 	=09
>> 		session.setDebug(true);
>> 		store =3D session.getStore("imap");
>> 		store.connect(host, username, password);
>> 		System.out.println("Listing Personal namespaces");
>> 		try {
>> 			// This will succeed.
>> 			listFolders(store.getPersonalNamespaces());
>> 			if (store.getPersonalNamespaces().length > 0) {
>> 				=
listSubFolders(store.getPersonalNamespaces()[0]);
>> 			}
>> 		} catch (Exception e) {
>> 			System.err.println("Error getting personal =
namespaces");
>> 			e.printStackTrace();		=09
>> 		}
>>
>> 		System.out.println("Listing Shared namespaces");
>> 		try {
>> 			// This will fail.
>> 			listFolders(store.getSharedNamespaces());
>> 		} catch (Exception e) {
>> 			System.err.println("Error getting shared =
namespaces");
>> 			e.printStackTrace();		=09
>> 		}
>
> I'm not sure what's going on with getSharedNamespaces as your =20
> stacktrace doesn't show line numbers that correspond to CVS HEAD - =20
> perhaps you could try with an up-to-date version and let me know =20
> the result?
>
>> 	=09
>> 		System.out.println("Listing User namespaces");
>> 		try {
>> 			// This will succeed.
>> 			listFolders(store.getUserNamespaces(username));
>> 		} catch (Exception e) {
>> 			System.err.println("Error getting user =
namespaces");
>> 			e.printStackTrace();		=09
>> 		}
>> 	=09
>> 		Folder folder =3D null;
>> 		try {
>> 			// This will fail.
>> 			folder =3D store.getDefaultFolder();
>> 			folder.open(Folder.READ_ONLY);
>> 			listSubFolders(folder);
>> 			folder.close(false);
>> 		} catch (MessagingException e){
>> 			System.err.println("Failed to open default =
folder as read-only");
>> 			e.printStackTrace();		=09
>> 		}
>>
>> 		try {
>> 			// This will fail.
>> 			folder =3D store.getDefaultFolder();
>> 			folder.open(Folder.READ_WRITE);
>> 			listSubFolders(folder);
>> 			folder.close(false);
>> 		} catch (MessagingException e){
>> 			System.err.println("Failed to open default =
folder as read-write");
>> 			e.printStackTrace();		=09
>> 		}
>
> This won't work: the "default folder" is supposed to be a sort of =20
> virtual root folder that contains other folders as children =20
> (notably INBOX). It can't be opened as it contains only folders, =20
> not messages: see the API documentation for Folder.open. You can =20
> use Folder.getType to discover whether a folder contains folders, =20
> messages, or both.
>
>> 		try {
>> 			// This will fail.
>> 			folder =3D store.getFolder("");
>> 			folder.open(Folder.READ_ONLY);
>> 			listSubFolders(folder);
>> 			folder.close(false);
>> 		} catch (MessagingException e){
>> 			System.err.println("Failed to open 'empty name' =
folder as read-=20
>> only");
>> 			e.printStackTrace();		=09
>> 		}
>> 		try {
>> 			// This will fail.
>> 			folder =3D store.getFolder("");
>> 			folder.open(Folder.READ_WRITE);
>> 			listSubFolders(folder);
>> 			folder.close(false);
>> 		} catch (MessagingException e){
>> 			System.err.println("Failed to open 'empty name' =
folder as read-=20
>> write");
>> 			e.printStackTrace();		=09
>> 		}
>
> The interpretation of this is up to your mail server, but typically =20=

> an empty-name folder refers to the default folder as above.
>
>> 		try {
>> 			// This will succeed.
>> 			folder =3D store.getFolder("INBOX");
>> 			folder.open(Folder.READ_ONLY);
>> 			listSubFolders(folder);
>> 			folder.close(false);
>> 		} catch (MessagingException e){
>> 			System.err.println("Failed to open 'INBOX' =
folder as read-only");
>> 			e.printStackTrace();
>> 		}
>> 		try {
>> 			// This will succeed.
>> 			folder =3D store.getFolder("INBOX");
>> 			folder.open(Folder.READ_WRITE);
>> 			listSubFolders(folder);
>> 			folder.close(false);
>> 		} catch (MessagingException e){
>> 			System.err.println("Failed to open 'INBOX' =
folder as read-write");
>> 			e.printStackTrace();
>> 		}
>> 	}
>> =09
>> 	private void listSubFolders(Folder folder) throws =20
>> MessagingException {
>> 		System.out.println("Folder " + folder.getFullName() + " =
type is =20
>> " + folder.getType());
>> 		if ((folder.getType() & Folder.HOLDS_FOLDERS) =3D=3D 0) =
{
>> 		=09
>> 			System.out.println("Folder " + =
folder.getFullName() + " cannot =20
>> contain subfolders.");
>> 			return;
>> 		}
>> 		System.out.println("Listing sub folders of " + =
folder.getFullName=20
>> ());
>> 		listFolders(folder.list());
>> 	}	=09
>> =09
>> 	private void listFolders(Folder[]array) {
>> 		for (int i =3D 0 ; i < array.length ; i++) {
>> 			Folder folder =3D array[i];
>> 			System.out.println("Found folder " =
+folder.getFullName());
>> 		=09
>> 		}
>> 	}
>> }
>
> --=20
> =E7=8A=AC Chris Burdess
>   "They that can give up essential liberty to obtain a little safety
>   deserve neither liberty nor safety." - Benjamin Franklin
>
>
>
>