gnu.mail.providers.nntp

Class NNTPRootFolder

java.lang.Object

javax.mail.Folder

gnu.mail.providers.nntp.NNTPRootFolder

public final class NNTPRootFolder
extends Folder

The "root" folder of the NNTP newsgroup list. The NNTP folder namespace is taken to be a flat namespace. This object allows us to retrieve folders corresponding to each newsgroup in that space.

Field Summary

Fields inherited from class javax.mail.Folder

HOLDS_FOLDERS, HOLDS_MESSAGES, mode, READ_ONLY, READ_WRITE, store

Method Summary

Methods

Modifier and Type	Method and Description
void	appendMessages(Message[] messages) Appends the specified messages to this folder.
void	close(boolean expunge) Closes this folder.
boolean	create(int type) Create this folder in the store.
boolean	delete(boolean flag) Deletes this folder.
boolean	exists() Indicates whether this folder exists in the Store.
Message[]	expunge() Expunges (permanently removing) all the messages marked DELETED.
Folder	getFolder(java.lang.String name) Returns a new Folder object associated with the specified name.
java.lang.String	getFullName() Returns the full name of this folder.
Message	getMessage(int msgnum) Returns the message with the given number.
int	getMessageCount() Returns the number of messages in this folder.
java.lang.String	getName() Returns the name of this folder.
Folder	getParent() Returns the parent folder of this folder, or null if this folder is the root of a folder hierarchy.
Flags	getPermanentFlags() Returns the permanent flags supported by this folder.
char	getSeparator() As we're dealing with a flat namespace, the value of this is irrelevant.
int	getType() This folder contains only folders.
boolean	hasNewMessages() Indicates whether this folder has new messages.
boolean	isOpen() Indicates whether this folder is open.
Folder[]	list(ListFolderListener listener) Returns the list of folders matching the specified pattern.
Folder[]	list(java.lang.String pattern) Returns the list of folders matching the specified pattern.
Folder[]	list(java.lang.String pattern, ListFolderListener listener) Returns the list of folders matching the specified pattern.
Folder[]	listSubscribed(java.lang.String pattern) Returns the list of subscribed folders matching the specified pattern.
void	open(int mode) Opens this folder.
boolean	renameTo(Folder folder) Renames this folder.
void	setSubscribed(boolean flag) This folder is always "subscribed".

Methods inherited from class javax.mail.Folder

addConnectionListener, addFolderListener, addMessageChangedListener, addMessageCountListener, copyMessages, fetch, getDeletedMessageCount, getMessages, getMessages, getMessages, getMode, getNewMessageCount, getStore, getUnreadMessageCount, getURLName, isSubscribed, list, listSubscribed, notifyConnectionListeners, notifyFolderListeners, notifyFolderRenamedListeners, notifyMessageAddedListeners, notifyMessageChangedListeners, notifyMessageRemovedListeners, removeConnectionListener, removeFolderListener, removeMessageChangedListener, removeMessageCountListener, search, search, setFlags, setFlags, setFlags, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

getName

public java.lang.String getName()

Description copied from class: Folder

Returns the name of this folder.

This method can be invoked on a closed folder.

Specified by:

getName in class Folder

getFullName

public java.lang.String getFullName()

Description copied from class: Folder

Returns the full name of this folder. If the folder resides under the root hierarchy of its store, the returned name is relative to the root. Otherwise an absolute name, starting with the hierarchy delimiter, is returned.

This method can be invoked on a closed folder.

Specified by:

getFullName in class Folder

list

public Folder[] list(java.lang.String pattern)
              throws MessagingException

Returns the list of folders matching the specified pattern.

Specified by:

list in class Folder

Parameters:

pattern - the JavaMail pattern

Throws:

MessagingException

list

public Folder[] list(ListFolderListener listener)
              throws MessagingException

Returns the list of folders matching the specified pattern.

Parameters:

listener - the listener to be called as soon as a new folder is listed

Throws:

MessagingException

list

public Folder[] list(java.lang.String pattern,
            ListFolderListener listener)
              throws MessagingException

Returns the list of folders matching the specified pattern.

Parameters:

pattern - the JavaMail pattern

listener - the listener that will be called for each folder name as soon as it is known

Throws:

MessagingException

listSubscribed

public Folder[] listSubscribed(java.lang.String pattern)
                        throws MessagingException

Returns the list of subscribed folders matching the specified pattern.

Overrides:

listSubscribed in class Folder

Parameters:

pattern - the JavaMail pattern

Throws:

MessagingException

getFolder

public Folder getFolder(java.lang.String name)
                 throws MessagingException

Returns a new Folder object associated with the specified name.

Specified by:

getFolder in class Folder

Parameters:

name - the name of the folder

Throws:

MessagingException

getParent

public Folder getParent()
                 throws MessagingException

Description copied from class: Folder

Returns the parent folder of this folder, or null if this folder is the root of a folder hierarchy.

This method can be invoked on a closed folder.

Specified by:

getParent in class Folder

Throws:

MessagingException

exists

public boolean exists()
               throws MessagingException

Description copied from class: Folder

Indicates whether this folder exists in the Store.

This method can be invoked on a closed folder.

Specified by:

exists in class Folder

Throws:

MessagingException

getSeparator

public char getSeparator()
                  throws MessagingException

As we're dealing with a flat namespace, the value of this is irrelevant.

Specified by:

getSeparator in class Folder

Throws:

MessagingException

getType

public int getType()

This folder contains only folders.

Specified by:

getType in class Folder

open

public void open(int mode)
          throws MessagingException

Description copied from class: Folder

Opens this folder. This method can only be invoked on a closed folder that can contain messages.

Specified by:

open in class Folder

Parameters:

mode - open the Folder READ_ONLY or READ_WRITE

Throws:

FolderNotFoundException - if this folder does not exist

MessagingException

close

public void close(boolean expunge)
           throws MessagingException

Description copied from class: Folder

Closes this folder. This method can only be invoked on an open folder.

Specified by:

close in class Folder

Parameters:

expunge - if true, expunge all deleted messages

Throws:

MessagingException

expunge

public Message[] expunge()
                  throws MessagingException

Description copied from class: Folder

Expunges (permanently removing) all the messages marked DELETED. Returns an array containing the expunged messages.

Expunge causes the renumbering of any messages with numbers higher than the message number of the lowest-numbered expunged message.

After a message has been expunged, only the isExpunged and getMessageNumber methods are still valid on the corresponding Message object; other methods may throw MessageRemovedException.

Specified by:

expunge in class Folder

Throws:

FolderNotFoundException - if this folder does not exist

MessagingException

isOpen

public boolean isOpen()

Description copied from class: Folder

Indicates whether this folder is open.

Specified by:

isOpen in class Folder

getPermanentFlags

public Flags getPermanentFlags()

Description copied from class: Folder

Returns the permanent flags supported by this folder.

Specified by:

getPermanentFlags in class Folder

getMessageCount

public int getMessageCount()
                    throws MessagingException

Description copied from class: Folder

Returns the number of messages in this folder.

This method can be invoked on a closed folder; however, note that for some stores, getting the message count can be an expensive operation involving actually opening the folder. In such cases, a provider can choose to return -1 here when the folder is closed.

Specified by:

getMessageCount in class Folder

Throws:

MessagingException

getMessage

public Message getMessage(int msgnum)
                   throws MessagingException

Description copied from class: Folder

Returns the message with the given number. The message number is the relative position of a message in its folder, starting at 1.

Note that message numbers can change within a session if the folder is expunged, therefore the use of message numbers as references to messages is inadvisable.

Specified by:

getMessage in class Folder

Parameters:

msgnum - the message number

Throws:

FolderNotFoundException - if this folder does not exist

MessagingException

setSubscribed

public void setSubscribed(boolean flag)
                   throws MessagingException

This folder is always "subscribed".

Overrides:

setSubscribed in class Folder

Throws:

MessagingException

hasNewMessages

public boolean hasNewMessages()
                       throws MessagingException

Description copied from class: Folder

Indicates whether this folder has new messages.

This method can be invoked on a closed folder that can contain messages.

Specified by:

hasNewMessages in class Folder

Throws:

MessagingException

appendMessages

public void appendMessages(Message[] messages)
                    throws MessagingException

Description copied from class: Folder

Appends the specified messages to this folder.

This method can be invoked on a closed folder.

Specified by:

appendMessages in class Folder

Parameters:

messages - array of messages to be appended

Throws:

FolderNotFoundException - if this folder does not exist

MessagingException - if the append operation failed

create

public boolean create(int type)
               throws MessagingException

Description copied from class: Folder

Create this folder in the store. When this folder is created, any folders in its path that do not exist are also created.

If the creation is successful, a CREATED FolderEvent is delivered to any FolderListeners registered on this Folder and this Store.

Specified by:

create in class Folder

Parameters:

type - the desired type of the folder

Throws:

MessagingException

delete

public boolean delete(boolean flag)
               throws MessagingException

Description copied from class: Folder

Deletes this folder. This method can only be invoked on a closed folder.

Specified by:

delete in class Folder

Parameters:

flag - delete any subfolders

Returns:

true if the folder is deleted successfully, false otherwise

Throws:

FolderNotFoundException - if this folder does not exist

MessagingException

renameTo

public boolean renameTo(Folder folder)
                 throws MessagingException

Description copied from class: Folder

Renames this folder. This method can only be invoked on a closed folder.

Specified by:

renameTo in class Folder

Parameters:

folder - a folder representing the new name for this folder

Returns:

true if the folder is renamed successfully, false otherwise

Throws:

FolderNotFoundException - if this folder does not exist

MessagingException