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Getting the first new Email out of a folder....

Posted on 2004-04-26
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Last Modified: 2013-11-24
Hi all,
I want to search for the first new (UNSEEN) email in a folder through JavaMail. Am i correct in saying that there is no such method in the API, which is unusual?

So if there's not, whats the best way of getting it? Is it something like this?

Message m = null;
Flags flag[];
int nextNewMessage;

Message[] msgs = folder.getMessages();

for (int i = msgs.length; i == 0; i--) {
   flag[i] = msgs[i].getFlags();
   if (flag[i] == "SEEN") {              << I know its wrong, any help?!
           nextNewMessage = i;
   } // end if  
           
}


Also, i can do this to CREATE a new folder, right?
   folder.getFolder("Trash Can");
   folder.create(Folder.HOLDS_MESSAGES);


Thanks in Advance
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Question by:BaconAndCabbage
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14 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 10919154
>>Am i correct in saying that there is no such method in the API, which is unusual?

Yes, if you're using POP (normal). There is no concept of seen/unseen in the protocol. The messages are either on the server or they've been deleted from it
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Expert Comment

by:CEHJ
ID: 10919165
...so if you want to only look at new ones, you have to ensure you delete the messages from the server after getting them.
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Author Comment

by:BaconAndCabbage
ID: 10919190
No, i'm actually using IMAP
0
 
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Expert Comment

by:maheshexp
ID: 10919319
one such answer is posted in this forum...

http://www.jguru.com/faq/view.jsp?EID=26898
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Expert Comment

by:maheshexp
ID: 10919338
UNSEEN, u mean a new Message....if iam correct,  need the new message, then sort all the messages by date and time, and pick out the recent one....
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Expert Comment

by:maheshexp
ID: 10919343
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Expert Comment

by:maheshexp
ID: 10919371
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LVL 86

Expert Comment

by:CEHJ
ID: 10919375
I'm not familiar with IMAP, but i don't think even that has a concept of 'read/unread'. You could probably treat is as above, or move it into a different folder
0
 

Author Comment

by:BaconAndCabbage
ID: 10919514
Thanks for the replies, but i don't think the links help.
          "then sort all the messages by date and time, and pick out the recent one"
That won't work because an unread email need not neccessarily be the most recent one, ie a unread email may be days old.

Ya see, i can check the NUMBER of new Messages in a folder, thats not a problem - what i want to get is the position (ie, msgCount) of any new emails!

Thanks again, any solution would be greatly appreciated
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Accepted Solution

by:
Tommy Braas earned 50 total points
ID: 10919550
The IMAP protocol is defined in http://www.faqs.org/rfcs/rfc3501.html

Change your code to read:
for (int j=0; j<flag[i].length; j++ ) {
   flags = msgs[i].getFlags();
   if ("\\Seen".equals(flag[j])) {
           nextNewMessage = i;
   } // end if  


More to the point is the fact that you can specify that you only want to receive unseen emails etc. Read the above document for more information.
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Expert Comment

by:CEHJ
ID: 10919556
The thing to do, if no changes are being done on the server, is to save the ids of the messages you HAVE read, and do a set intersection using those, leaving you with unread ones
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Expert Comment

by:CEHJ
ID: 10919672
Interesting - so you can flag the message as \Seen. I'm always trying to find an elusive site where they've formatted these rfcs as html, but failing ;-)
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Expert Comment

by:Tommy Braas
ID: 10919781
>>  I'm always trying to find an elusive site where they've formatted these rfcs as html, but failing ;-)
Yes, I haven't found one either...
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Author Comment

by:BaconAndCabbage
ID: 10921006
As always lads, thanks a lot
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