Package org.atmosphere.cpr

Class DefaultMetaBroadcaster

java.lang.Object

org.atmosphere.cpr.DefaultMetaBroadcaster

All Implemented Interfaces:

MetaBroadcaster, AtmosphereConfigAware

public class DefaultMetaBroadcaster
extends Object
implements MetaBroadcaster

Broadcast events to all or a subset of available Broadcasters based on their Broadcaster.getID() value. This class allows broadcasting events to a set of broadcasters that maps to some String like:

        // Broadcast the event to all Broadcaster ID starting with /hello
        broadcast("/hello", event)
        // Broadcast the event to all Broadcaster ID
        broaccast("/*", event);
 

The rule used is similar to path/URI mapping used by technology like Servlet, Jersey, etc.

NOTE: Broadcasters' name must start with / in order to get retrieved by this class.

This class is NOT thread safe.

If you want to use MetaBroadcaster with Jersey or any framework, make sure all Broadcaster.getID() starts with '/'. For example, with Jersey:

Author:

Jeanfrancois Arcand

Nested Class Summary

Nested classes/interfaces inherited from interface org.atmosphere.cpr.MetaBroadcaster

MetaBroadcaster.MetaBroadcasterCache, MetaBroadcaster.NoCache, MetaBroadcaster.ThirtySecondsCache

Field Summary

Fields

Modifier and Type	Field	Description
static final String	MAPPING_REGEX

Constructor Summary

Constructors

Constructor	Description
DefaultMetaBroadcaster()

Method Summary

Modifier and Type	Method	Description
MetaBroadcaster	addBroadcasterListener(BroadcasterListener b)	Add a BroadcasterListener to all mapped Broadcasters.
protected org.atmosphere.cpr.DefaultMetaBroadcaster.MetaBroadcasterFuture	broadcast(String path, Object message, int time, TimeUnit unit, boolean delay, boolean cacheMessage)
Future<List<Broadcaster>>	broadcastTo(String broadcasterID, Object message)	Broadcast the message to all Broadcasters whose Broadcaster.getID() matches the broadcasterID value.
Future<List<Broadcaster>>	broadcastTo(String broadcasterID, Object message, boolean cacheMessage)	Broadcast the message to all Broadcasters whose Broadcaster.getID() matches the broadcasterID value.
MetaBroadcaster	cache(MetaBroadcaster.MetaBroadcasterCache cache)	Set the MetaBroadcaster.MetaBroadcasterCache.
void	configure(AtmosphereConfig config)	Configure an AtmosphereFramework object.
Future<List<Broadcaster>>	delayTo(String broadcasterID, Object message, int time, TimeUnit unit)	Delay the message delivery to Broadcasters whose Broadcaster.getID() matches the broadcasterID value.
void	destroy()
protected MetaBroadcaster	flushCache()	Flush the cached messages.
protected org.atmosphere.cpr.DefaultMetaBroadcaster.MetaBroadcasterFuture	map(String path, Object message, int time, TimeUnit unit, boolean delay, boolean cacheMessage)
MetaBroadcaster	removeBroadcasterListener(BroadcasterListener b)	Remove the BroadcasterListener.
Future<List<Broadcaster>>	scheduleTo(String broadcasterID, Object message, int time, TimeUnit unit)	Broadcast the message at a fixed rate to all Broadcasters whose Broadcaster.getID() matches the broadcasterID value.

Methods inherited from class java.lang.Object

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

Field Details

MAPPING_REGEX

public static final String MAPPING_REGEX

See Also:

• Constant Field Values

Constructor Details

DefaultMetaBroadcaster

public DefaultMetaBroadcaster()

Method Details

configure

public void configure(AtmosphereConfig config)

Description copied from interface: AtmosphereConfigAware

Configure an AtmosphereFramework object.

Specified by:

configure in interface AtmosphereConfigAware

Parameters:

config - AtmosphereConfig

broadcast

protected org.atmosphere.cpr.DefaultMetaBroadcaster.MetaBroadcasterFuture broadcast(String path,
 Object message,
 int time,
 TimeUnit unit,
 boolean delay,
 boolean cacheMessage)

map

protected org.atmosphere.cpr.DefaultMetaBroadcaster.MetaBroadcasterFuture map(String path,
 Object message,
 int time,
 TimeUnit unit,
 boolean delay,
 boolean cacheMessage)

broadcastTo

public Future<List<Broadcaster>> broadcastTo(String broadcasterID,
 Object message)

Description copied from interface: MetaBroadcaster

Broadcast the message to all Broadcasters whose Broadcaster.getID() matches the broadcasterID value.

Specified by:

broadcastTo in interface MetaBroadcaster

Parameters:

broadcasterID - a String (or path) that can potentially match a Broadcaster.getID()

message - a message to be broadcasted

Returns:

a Future

broadcastTo

public Future<List<Broadcaster>> broadcastTo(String broadcasterID,
 Object message,
 boolean cacheMessage)

Description copied from interface: MetaBroadcaster

Broadcast the message to all Broadcasters whose Broadcaster.getID() matches the broadcasterID value.

Specified by:

broadcastTo in interface MetaBroadcaster

Parameters:

broadcasterID - a String (or path) that can potentially match a Broadcaster.getID()

message - a message to be broadcasted

cacheMessage - allow the cache to be cached or not.

Returns:

a Future

flushCache

protected MetaBroadcaster flushCache()

Flush the cached messages.

Returns:

this

scheduleTo

public Future<List<Broadcaster>> scheduleTo(String broadcasterID,
 Object message,
 int time,
 TimeUnit unit)

Description copied from interface: MetaBroadcaster

Broadcast the message at a fixed rate to all Broadcasters whose Broadcaster.getID() matches the broadcasterID value. This operation will invoke Broadcaster.scheduleFixedBroadcast(Object, long, java.util.concurrent.TimeUnit)}

Specified by:

scheduleTo in interface MetaBroadcaster

Parameters:

broadcasterID - a String (or path) that can potentially match a Broadcaster.getID()

message - a message to be broadcasted

time - a time value

unit - a TimeUnit

Returns:

a Future

delayTo

public Future<List<Broadcaster>> delayTo(String broadcasterID,
 Object message,
 int time,
 TimeUnit unit)

Description copied from interface: MetaBroadcaster

Delay the message delivery to Broadcasters whose Broadcaster.getID() matches the broadcasterID value. This operation will invoke Broadcaster.delayBroadcast(Object, long, java.util.concurrent.TimeUnit) (Object, long, java.util.concurrent.TimeUnit)}}

Specified by:

delayTo in interface MetaBroadcaster

Parameters:

broadcasterID - a String (or path) that can potentially match a Broadcaster.getID()

message - a message to be broadcasted

time - a time value

unit - a TimeUnit

Returns:

a Future

addBroadcasterListener

public MetaBroadcaster addBroadcasterListener(BroadcasterListener b)

Description copied from interface: MetaBroadcaster

Add a BroadcasterListener to all mapped Broadcasters.

Specified by:

addBroadcasterListener in interface MetaBroadcaster

Parameters:

b - BroadcasterListener

Returns:

this

removeBroadcasterListener

public MetaBroadcaster removeBroadcasterListener(BroadcasterListener b)

Description copied from interface: MetaBroadcaster

Remove the BroadcasterListener.

Specified by:

removeBroadcasterListener in interface MetaBroadcaster

Parameters:

b - BroadcasterListener

Returns:

this

cache

public MetaBroadcaster cache(MetaBroadcaster.MetaBroadcasterCache cache)

Description copied from interface: MetaBroadcaster

Set the MetaBroadcaster.MetaBroadcasterCache. Default is MetaBroadcaster.NoCache.

Specified by:

cache in interface MetaBroadcaster

Parameters:

cache -

Returns:

this

destroy

public void destroy()

Specified by:

destroy in interface MetaBroadcaster