[jira] Commented: (GERONIMO-4241) NPE when calling folder.getDeletedMessageCount() for POP3 store

["Dave Rushall (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GERONIMO-4241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12623975#action_12623975 ] 

Dave Rushall commented on GERONIMO-4241:
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Perhaps I'm missing something, but I don't understand why getDeletedMessageCount() is attempting to open the second connection, at all. If the application already has the folder open (read/write), then attempting to open the second session to the same POP3 folder is going to fail, isn't it? I would have thought that the POP3 folder implementation should be able to determine the count without making a second connection - getMessageCount() doesn't make a second connection, for example.

For now, I'm working around the problem for POP3 by assuming that getDeletedMessageCount() always returns 0, unless I have deleted a message in my active session. It seems odd that I have to do this and this workaround does not seem to be necessary when using another implementation of Javamail.


> NPE when calling folder.getDeletedMessageCount() for POP3 store
> ---------------------------------------------------------------
>
>                 Key: GERONIMO-4241
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-4241
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>          Components: mail
>         Environment: geronimo-javamail_1.4_mail-1.4.jar
> IBM JRE 6 SR 1
> Windows XP
>            Reporter: Dave Rushall
>
> Calling folder.getDeletedMessageCount() for POP3 store results in the following NPE...
> java.lang.NullPointerException
> 	at org.apache.geronimo.javamail.store.pop3.POP3Store.isConnected(POP3Store.java:238)
> 	at org.apache.geronimo.javamail.store.pop3.POP3Folder.isOpen(POP3Folder.java:354)
> 	at javax.mail.Folder.getCount(Folder.java:436)
> 	at javax.mail.Folder.getDeletedMessageCount(Folder.java:432)
> Note that calling folder.getMessageCount() functions as expected.
> The debug logs suggest that getDeletedMessageCount() attempts to open a second simultaneous connection, which is refused by the server...
> Loading javamail.default.providers from jar:file:/C:/Documents%20and%20Settings/Administrator/Desktop/Calico/other/geronimo-javamail_1.4_mail-1.4.jar!/META-INF/javamail.default.providers
> DEBUG: loading new provider protocol=smtp, className=org.apache.geronimo.javamail.transport.smtp.SMTPTransport, vendor=Apache Software Foundation, version=1.0
> DEBUG: loading new provider protocol=smtps, className=org.apache.geronimo.javamail.transport.smtp.SMTPTSransport, vendor=Apache Software Foundation, version=1.0
> DEBUG: loading new provider protocol=nntp-post, className=org.apache.geronimo.javamail.transport.nntp.NNTPTransport, vendor=Apache Software Foundation, version=1.0
> DEBUG: loading new provider protocol=nntp, className=org.apache.geronimo.javamail.store.nntp.NNTPStore, vendor=Apache Software Foundation, version=1.0
> DEBUG: loading new provider protocol=pop3, className=org.apache.geronimo.javamail.store.pop3.POP3Store, vendor=Apache Software Foundation, version=1.0
> DEBUG: loading new provider protocol=pop3s, className=org.apache.geronimo.javamail.store.pop3.POP3SSLStore, vendor=Apache Software Foundation, version=1.0
> DEBUG: loading new provider protocol=imap, className=org.apache.geronimo.javamail.store.imap.IMAPStore, vendor=Apache Software Foundation, version=1.0
> DEBUG: loading new provider protocol=imaps, className=org.apache.geronimo.javamail.store.imap.IMAPSSLStore, vendor=Apache Software Foundation, version=1.0
> DEBUG: getProvider() returning provider protocol=pop3; type=javax.mail.Provider$Type@67886788; class=org.apache.geronimo.javamail.store.pop3.POP3Store; vendor=Apache Software Foundation;version=1.0
> IMAPStore DEBUG: Attempting plain socket connection to server null:0
> POP3Store DEBUG: Connecting to server ********:110 for user ********
> IMAPStore DEBUG: Attempting plain socket connection to server ********:110
> +OK POP3 ******** v2003.83 server ready
> USER ********
> +OK User name accepted, password please
> PASS ********
> +OK Mailbox open, 0 messages
> NOOP
> +OK No-op to you too!
> STAT
> +OK 0 0
> IMAPStore DEBUG: Attempting plain socket connection to server ********:110
> +OK POP3 ******** v2003.83 server ready
> USER ********
> +OK User name accepted, password please
> PASS ********
> -ERR Can't get lock.  Mailbox in use

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