org.cometd.bayeux.server
Interface ServerSession

All Superinterfaces:

Session

public interface ServerSession
extends Session

Objects implementing this interface are the server-side representation of remote Bayeux clients.

ServerSession contains the queue of messages to be delivered to the client; messages are normally queued on a ServerSession by publishing them to a channel to which the session is subscribed (via ServerChannel.publish(Session, ServerMessage)).

The deliver(Session, ServerMessage) and deliver(Session, String, Object, String) methods may be used to directly queue messages to a session without publishing them to all subscribers of a channel.

Version:

$Revision: 1483 $ $Date: 2009-03-04 14:56:47 +0100 (Wed, 04 Mar 2009) $

Nested Class Summary

static interface	ServerSession.DeQueueListener Listeners objects that implement this interface will be notified when the session queue is being drained to actually deliver the messages.
static interface	ServerSession.Extension Extension API for ServerSession.
static interface	ServerSession.MaxQueueListener Listeners objects that implement this interface will be notified when the session queue is full.
static interface	ServerSession.MessageListener Listeners objects that implement this interface will be notified of message arrival.
static interface	ServerSession.RemoveListener Listeners objects that implement this interface will be notified of session removal.
static interface	ServerSession.ServerSessionListener Common interface for ServerSession listeners.

Method Summary

void	addExtension(ServerSession.Extension extension) Adds the given extension to this session.
void	addListener(ServerSession.ServerSessionListener listener) Adds the given listener to this session.
void	deliver(Session from, ServerMessage message) Delivers the given message to this session.
void	deliver(Session from, String channel, Object data, String id) Delivers the given information to this session.
LocalSession	getLocalSession()
String	getUserAgent() Get the clients user agent
boolean	isLocalSession()
void	removeExtension(ServerSession.Extension extension) Removes the given extension from this session
void	removeListener(ServerSession.ServerSessionListener listener) Removes the given listener from this session.

Methods inherited from interface org.cometd.bayeux.Session

batch, disconnect, endBatch, getAttribute, getAttributeNames, getId, isConnected, isHandshook, removeAttribute, setAttribute, startBatch

Method Detail

addExtension

void addExtension(ServerSession.Extension extension)

Adds the given extension to this session.

Parameters:

extension - the extension to add

See Also:

removeExtension(Extension)

removeExtension

void removeExtension(ServerSession.Extension extension)

Removes the given extension from this session

Parameters:

extension - the extension to remove

See Also:

addExtension(Extension)

addListener

void addListener(ServerSession.ServerSessionListener listener)

Adds the given listener to this session.

Parameters:

listener - the listener to add

See Also:

removeListener(ServerSessionListener)

removeListener

void removeListener(ServerSession.ServerSessionListener listener)

Removes the given listener from this session.

Parameters:

listener - the listener to remove

See Also:

addListener(ServerSessionListener)

isLocalSession

boolean isLocalSession()

Returns:

whether this is a session for a local client on server-side

getLocalSession

LocalSession getLocalSession()

Returns:

the LocalSession associated with this session, or null if this is a session representing a remote client.

deliver

void deliver(Session from,
             ServerMessage message)

Delivers the given message to this session.

This is different from ServerChannel.publish(Session, ServerMessage) as the message is delivered only to this session and not to all subscribers of the channel.

The message should still have a channel id specified, so that the ClientSession may identify the listeners the message should be delivered to.

Parameters:

from - the session delivering the message

message - the message to deliver

See Also:

deliver(Session, String, Object, String)

deliver

void deliver(Session from,
             String channel,
             Object data,
             String id)

Delivers the given information to this session.

Parameters:

from - the session delivering the message

channel - the channel of the message

data - the data of the message

id - the id of the message, or null to let the implementation choose an id

See Also:

deliver(Session, ServerMessage)

getUserAgent

String getUserAgent()

Get the clients user agent

Returns:

The string indicating the client user agent, or null if not known