org.atmosphere.cpr

Interface BroadcastFilter

All Known Subinterfaces:

BroadcastFilterLifecycle, ClusterBroadcastFilter, PerRequestBroadcastFilter

All Known Implementing Classes:

BroadcastFilterAdapter, StringFilterAggregator, TrackMessageSizeFilter, XSSHtmlFilter

public interface BroadcastFilter

Transform a message before it get broadcasted to AtmosphereHandler.onStateChange(org.atmosphere.cpr.AtmosphereResourceEvent).

See XSSHtmlFilter for an example.

Author:

Jeanfrancois Arcand

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	BroadcastFilter.BroadcastAction Simple class that tells the Broadcaster to broadcast or not the transformed value.

Field Summary

Fields

Modifier and Type	Field and Description
static String	VOID_ATMOSPHERE_RESOURCE_UUID When a message is about to get cached and some BroadcastFilter are defined, and when no AtmosphereResource is available, a no-op AtmosphereResource with uuid == -1 will be used to invoke BroadcastFilter.

Method Summary

Methods

Modifier and Type	Method and Description
BroadcastFilter.BroadcastAction	filter(Object originalMessage, Object message) Transform or filter a message.

Field Detail

VOID_ATMOSPHERE_RESOURCE_UUID

static final String VOID_ATMOSPHERE_RESOURCE_UUID

When a message is about to get cached and some BroadcastFilter are defined, and when no AtmosphereResource is available, a no-op AtmosphereResource with uuid == -1 will be used to invoke BroadcastFilter.

See Also:

Constant Field Values

Method Detail

filter

BroadcastFilter.BroadcastAction filter(Object originalMessage,
                                     Object message)

Transform or filter a message. Return BroadcastAction(ACTION.ABORT, message) Broadcaster to discard the message, eg. to not broadcast it.

Parameters:

originalMessage - The original message which was Broadcaster.broadcast(Object);

message - The transformed or not message.

Returns:

a transformed message.