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; [EMAIL PROTECTED]; 
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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