Package io.ably.lib.rest

Class ChannelBase

java.lang.Object

io.ably.lib.rest.ChannelBase

Direct Known Subclasses:

Channel

public class ChannelBase
extends Object

A class representing a Channel in the Ably REST API. In the REST API, the library is essentially stateless; a Channel object simply represents a channel for making REST requests, and existence of a channel does not signify that there is a realtime connection or attachment to that channel.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	ChannelBase.Presence	Enables the retrieval of the current and historic presence set for a channel.

Field Summary

Fields

Modifier and Type	Field	Description
final String	name	The Channel name
final ChannelBase.Presence	presence	The presence instance for this channel.

Method Summary

Modifier and Type	Method	Description
PaginatedResult<Message>	history(Param[] params)	Obtain recent history for this channel using the REST API.
void	historyAsync(Param[] params, Callback<AsyncPaginatedResult<Message>> callback)	Asynchronously obtain recent history for this channel using the REST API.
void	publish(Message[] messages)	Publish an array of messages on this channel.
void	publish(String name, Object data)	Publish a message on this channel using the REST API.
void	publishAsync(Message[] messages, CompletionListener listener)	Asynchronously publish an array of messages on this channel
void	publishAsync(String name, Object data, CompletionListener listener)	Publish a message on this channel using the REST API.

Methods inherited from class java.lang.Object

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

Field Details

name

public final String name

The Channel name

presence

public final ChannelBase.Presence presence

The presence instance for this channel.

Method Details

publish

public void publish(String name,
 Object data)
             throws AblyException

Publish a message on this channel using the REST API. Since the REST API is stateless, this request is made independently of any other request on this or any other channel.

Parameters:

name - the event name

data - the message payload; see io.ably.types.Data for details of supported data types.

Throws:

AblyException

publishAsync

public void publishAsync(String name,
 Object data,
 CompletionListener listener)

Publish a message on this channel using the REST API. Since the REST API is stateless, this request is made independently of any other request on this or any other channel.

Parameters:

name - the event name

data - the message payload; see io.ably.types.Data for

listener - a listener to be notified of the outcome of this message.

This listener is invoked on a background thread.

publish

public void publish(Message[] messages)
             throws AblyException

Publish an array of messages on this channel. When there are multiple messages to be sent, it is more efficient to use this method to publish them in a single request, as compared with publishing via multiple independent requests.

Parameters:

messages - array of messages to publish.

Throws:

AblyException

publishAsync

public void publishAsync(Message[] messages,
 CompletionListener listener)

Asynchronously publish an array of messages on this channel

Parameters:

messages - the message

listener - a listener to be notified of the outcome of this message.

This listener is invoked on a background thread.

history

public PaginatedResult<Message> history(Param[] params)
                                 throws AblyException

Obtain recent history for this channel using the REST API. The history provided relqtes to all clients of this application, not just this instance.

Parameters:

params - the request params. See the Ably REST API documentation for more details.

Returns:

an array of Messages for this Channel.

Throws:

AblyException

historyAsync

public void historyAsync(Param[] params,
 Callback<AsyncPaginatedResult<Message>> callback)

Asynchronously obtain recent history for this channel using the REST API.

Parameters:

params - the request params. See the Ably REST API

callback -