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Store.javaAPI DocGlassfish v2 API12030Mon May 14 15:28:48 BST 2007javax.mail

Store

public abstract class Store extends Service
An abstract class that models a message store and its access protocol, for storing and retrieving messages. Subclasses provide actual implementations.

Note that Store extends the Service class, which provides many common methods for naming stores, connecting to stores, and listening to connection events.

author
John Mani
author
Bill Shannon
version
1.28, 07/05/04
see
javax.mail.Service
see
javax.mail.event.ConnectionEvent
see
javax.mail.event.StoreEvent

Fields Summary
private volatile Vector
storeListeners
private volatile Vector
folderListeners
Constructors Summary
protected Store(Session session, URLName urlname)
Constructor.

param
session Session object for this Store.
param
urlname URLName object to be used for this Store

	super(session, urlname);
    
Methods Summary
public synchronized voidaddFolderListener(javax.mail.event.FolderListener l)
Add a listener for Folder events on any Folder object obtained from this Store. FolderEvents are delivered to FolderListeners on the affected Folder as well as to FolderListeners on the containing Store.

The default implementation provided here adds this listener to an internal list of FolderListeners.

param
l the Listener for Folder events
see
javax.mail.event.FolderEvent


                                                                                       
         
   	if (folderListeners == null)
	    folderListeners = new Vector();
	folderListeners.addElement(l);
    
public synchronized voidaddStoreListener(javax.mail.event.StoreListener l)
Add a listener for StoreEvents on this Store.

The default implementation provided here adds this listener to an internal list of StoreListeners.

param
l the Listener for Store events
see
javax.mail.event.StoreEvent


                                                             
         
	if (storeListeners == null)
	    storeListeners = new Vector();
	storeListeners.addElement(l);
    
public abstract javax.mail.FoldergetDefaultFolder()
Returns a Folder object that represents the 'root' of the default namespace presented to the user by the Store.

return
the root Folder
exception
IllegalStateException if this Store is not connected.

public abstract javax.mail.FoldergetFolder(java.lang.String name)
Return the Folder object corresponding to the given name. Note that a Folder object is returned even if the named folder does not physically exist on the Store. The exists() method on the folder object indicates whether this folder really exists.

Folder objects are not cached by the Store, so invoking this method on the same name multiple times will return that many distinct Folder objects.

param
name The name of the Folder. In some Stores, name can be an absolute path if it starts with the hierarchy delimiter. Else it is interpreted relative to the 'root' of this namespace.
return
Folder object
exception
IllegalStateException if this Store is not connected.
see
Folder#exists
see
Folder#create

public abstract javax.mail.FoldergetFolder(javax.mail.URLName url)
Return a closed Folder object, corresponding to the given URLName. The store specified in the given URLName should refer to this Store object.

Implementations of this method may obtain the name of the actual folder using the getFile() method on URLName, and use that name to create the folder.

param
url URLName that denotes a folder
see
URLName
exception
IllegalStateException if this Store is not connected.
return
Folder object

public javax.mail.Folder[]getPersonalNamespaces()
Return a set of folders representing the personal namespaces for the current user. A personal namespace is a set of names that is considered within the personal scope of the authenticated user. Typically, only the authenticated user has access to mail folders in their personal namespace. If an INBOX exists for a user, it must appear within the user's personal namespace. In the typical case, there should be only one personal namespace for each user in each Store.

This implementation returns an array with a single entry containing the return value of the getDefaultFolder method. Subclasses should override this method to return appropriate information.

exception
IllegalStateException if this Store is not connected.
return
array of Folder objects
since
JavaMail 1.2

	return new Folder[] { getDefaultFolder() };
    
public javax.mail.Folder[]getSharedNamespaces()
Return a set of folders representing the shared namespaces. A shared namespace is a namespace that consists of mail folders that are intended to be shared amongst users and do not exist within a user's personal namespace.

This implementation returns an empty array. Subclasses should override this method to return appropriate information.

exception
IllegalStateException if this Store is not connected.
return
array of Folder objects
since
JavaMail 1.2

	return new Folder[0];
    
public javax.mail.Folder[]getUserNamespaces(java.lang.String user)
Return a set of folders representing the namespaces for user. The namespaces returned represent the personal namespaces for the user. To access mail folders in the other user's namespace, the currently authenticated user must be explicitly granted access rights. For example, it is common for a manager to grant to their secretary access rights to their mail folders.

This implementation returns an empty array. Subclasses should override this method to return appropriate information.

exception
IllegalStateException if this Store is not connected.
return
array of Folder objects
since
JavaMail 1.2

	return new Folder[0];
    
protected voidnotifyFolderListeners(int type, javax.mail.Folder folder)
Notify all FolderListeners. Store implementations are expected to use this method to broadcast Folder events.

The provided default implementation queues the event into an internal event queue. An event dispatcher thread dequeues events from the queue and dispatches them to the registered FolderListeners. Note that the event dispatching occurs in a separate thread, thus avoiding potential deadlock problems.

param
type type of FolderEvent
param
folder affected Folder
see
#notifyFolderRenamedListeners

   	if (folderListeners == null) 
	    return;
	
	FolderEvent e = new FolderEvent(this, folder, type);
	queueEvent(e, folderListeners);
    
protected voidnotifyFolderRenamedListeners(javax.mail.Folder oldF, javax.mail.Folder newF)
Notify all FolderListeners about the renaming of a folder. Store implementations are expected to use this method to broadcast Folder events indicating the renaming of folders.

The provided default implementation queues the event into an internal event queue. An event dispatcher thread dequeues events from the queue and dispatches them to the registered FolderListeners. Note that the event dispatching occurs in a separate thread, thus avoiding potential deadlock problems.

param
oldF the folder being renamed
param
newF the folder representing the new name.
since
JavaMail 1.1

   	if (folderListeners == null) 
	    return;
	
	FolderEvent e = new FolderEvent(this, oldF, newF,FolderEvent.RENAMED);
	queueEvent(e, folderListeners);
    
protected voidnotifyStoreListeners(int type, java.lang.String message)
Notify all StoreListeners. Store implementations are expected to use this method to broadcast StoreEvents.

The provided default implementation queues the event into an internal event queue. An event dispatcher thread dequeues events from the queue and dispatches them to the registered StoreListeners. Note that the event dispatching occurs in a separate thread, thus avoiding potential deadlock problems.

   	if (storeListeners == null)
	    return;
	
	StoreEvent e = new StoreEvent(this, type, message);
	queueEvent(e, storeListeners);
    
public synchronized voidremoveFolderListener(javax.mail.event.FolderListener l)
Remove a listener for Folder events.

The default implementation provided here removes this listener from the internal list of FolderListeners.

param
l the listener
see
#addFolderListener

   	if (folderListeners != null)
	    folderListeners.removeElement(l);
    
public synchronized voidremoveStoreListener(javax.mail.event.StoreListener l)
Remove a listener for Store events.

The default implementation provided here removes this listener from the internal list of StoreListeners.

param
l the listener
see
#addStoreListener

	if (storeListeners != null)
	    storeListeners.removeElement(l);