Interface BayeuxServer
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- All Superinterfaces:
Bayeux
- All Known Implementing Classes:
BayeuxServerImpl
public interface BayeuxServer extends Bayeux
The server-side Bayeux interface.
An instance of the
BayeuxServer
interface is available to web applications via the ""org.cometd.bayeux"" attribute of thejavax.servlet.ServletContext
.The
BayeuxServer
APIs give access to theServerSession
s via thegetSession(String)
method. It also allows newLocalSession
to be created within the server using thenewLocalSession(String)
method.ServerChannel
instances may be accessed via thegetChannel(String)
method, but the server has no direct relationship withClientSessionChannel
s orClientSession
.If subscription semantics is required, then the
newLocalSession(String)
method should be used to create aLocalSession
that can subscribe and publish like a client-side Bayeux session.
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Nested Class Summary
Nested Classes Modifier and Type Interface Description static interface
BayeuxServer.BayeuxServerListener
Common base interface for all server-side Bayeux listeners.static interface
BayeuxServer.ChannelListener
Specialized listener forServerChannel
events.static interface
BayeuxServer.Extension
Extension API forBayeuxServer
.static interface
BayeuxServer.SessionListener
Specialized listener forServerSession
events.static interface
BayeuxServer.SubscriptionListener
Specialized listener forServerChannel
subscription events.-
Nested classes/interfaces inherited from interface org.cometd.bayeux.Bayeux
Bayeux.BayeuxListener, Bayeux.Validator
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Field Summary
Fields Modifier and Type Field Description static java.lang.String
ATTRIBUTE
ServletContext attribute name used to obtain the Bayeux object
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description void
addExtension(BayeuxServer.Extension extension)
Adds the given extension to this Bayeux object.void
addListener(BayeuxServer.BayeuxServerListener listener)
Adds a listener to this Bayeux object.MarkedReference<ServerChannel>
createChannelIfAbsent(java.lang.String channelName, ConfigurableServerChannel.Initializer... initializers)
Creates aServerChannel
and initializes it atomically if the channel does not exist, or returns it if it already exists.ServerChannel
getChannel(java.lang.String channelId)
java.util.List<ServerChannel>
getChannels()
java.util.List<BayeuxServer.Extension>
getExtensions()
SecurityPolicy
getSecurityPolicy()
ServerSession
getSession(java.lang.String clientId)
java.util.List<ServerSession>
getSessions()
LocalSession
newLocalSession(java.lang.String idHint)
Creates a newLocalSession
.ServerMessage.Mutable
newMessage()
void
removeExtension(BayeuxServer.Extension extension)
Removes the given extension from this Bayeux object.void
removeListener(BayeuxServer.BayeuxServerListener listener)
Removes a listener from this Bayeux object.boolean
removeSession(ServerSession session)
Removes the givensession
from this BayeuxServer.void
setSecurityPolicy(SecurityPolicy securityPolicy)
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Methods inherited from interface org.cometd.bayeux.Bayeux
getAllowedTransports, getKnownTransportNames, getOption, getOptionNames, getTransport, setOption
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Field Detail
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ATTRIBUTE
static final java.lang.String ATTRIBUTE
ServletContext attribute name used to obtain the Bayeux object- See Also:
- Constant Field Values
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Method Detail
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addExtension
void addExtension(BayeuxServer.Extension extension)
Adds the given extension to this Bayeux object.
- Parameters:
extension
- the extension to add- See Also:
removeExtension(Extension)
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removeExtension
void removeExtension(BayeuxServer.Extension extension)
Removes the given extension from this Bayeux object.
- Parameters:
extension
- the extension to remove- See Also:
addExtension(Extension)
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getExtensions
java.util.List<BayeuxServer.Extension> getExtensions()
- Returns:
- an immutable list of extensions present in this BayeuxServer instance
- See Also:
addExtension(Extension)
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addListener
void addListener(BayeuxServer.BayeuxServerListener listener)
Adds a listener to this Bayeux object.
- Parameters:
listener
- the listener to add- See Also:
removeListener(BayeuxServerListener)
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removeListener
void removeListener(BayeuxServer.BayeuxServerListener listener)
Removes a listener from this Bayeux object.
- Parameters:
listener
- the listener to remove- See Also:
addListener(BayeuxServerListener)
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getChannel
ServerChannel getChannel(java.lang.String channelId)
- Parameters:
channelId
- the channel identifier- Returns:
- a
ServerChannel
with the givenchannelId
, or null if no such channel exists - See Also:
createChannelIfAbsent(String, ConfigurableServerChannel.Initializer...)
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getChannels
java.util.List<ServerChannel> getChannels()
- Returns:
- the list of channels known to this BayeuxServer object
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createChannelIfAbsent
MarkedReference<ServerChannel> createChannelIfAbsent(java.lang.String channelName, ConfigurableServerChannel.Initializer... initializers)
Creates a
ServerChannel
and initializes it atomically if the channel does not exist, or returns it if it already exists.This method can be used instead of adding a
BayeuxServer.ChannelListener
to atomically initialize a channel. Theinitializers
will be called before any other thread can access the new channel instance.This method should be used when a channel needs to be initialized (e.g. by adding listeners) before any publish or subscribes can occur on the channel, or before any other thread may concurrently create the same channel.
- Parameters:
channelName
- the channel nameinitializers
- the initializers invoked to configure the channel- Returns:
- a
MarkedReference
whose reference is the channel, and the mark signals whether the channel has been created because it did not exist before.
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getSession
ServerSession getSession(java.lang.String clientId)
- Parameters:
clientId
- theServerSession
identifier- Returns:
- the
ServerSession
with the givenclientId
or null if no such valid session exists.
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getSessions
java.util.List<ServerSession> getSessions()
- Returns:
- the list of
ServerSession
s known to this BayeuxServer object
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removeSession
boolean removeSession(ServerSession session)
Removes the given
session
from this BayeuxServer.This method triggers the invocation of all listeners that would be called if the session was disconnected or if the session timed out.
- Parameters:
session
- the session to remove- Returns:
- true if the session was known to this BayeuxServer and was removed
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newLocalSession
LocalSession newLocalSession(java.lang.String idHint)
Creates a new
LocalSession
.A
LocalSession
is a server-side ClientSession that allows server-side code to have special clients (resident within the same JVM) that can be used to publish and subscribe like a client-side session would do.- Parameters:
idHint
- a hint to be included in the unique clientId of the session.- Returns:
- a new
LocalSession
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newMessage
ServerMessage.Mutable newMessage()
- Returns:
- a new or recycled mutable message instance.
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getSecurityPolicy
SecurityPolicy getSecurityPolicy()
- Returns:
- the
SecurityPolicy
associated with this session - See Also:
setSecurityPolicy(SecurityPolicy)
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setSecurityPolicy
void setSecurityPolicy(SecurityPolicy securityPolicy)
- Parameters:
securityPolicy
- theSecurityPolicy
associated with this session- See Also:
getSecurityPolicy()
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