Class: TopicNotificationListener

Methods

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onClose()

Called when the listener is closed. The listener will be closed if the session is closed, or if the listener is closed by the TopicNotificationRegistration

Once closed, no further calls will be made to the listener.

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onDescendantNotification(topicPath, type)

Notification for an immediate descendant of a selected topic path. This notifies the presence or absence of a descendant topic that may subsequently be explicitly selected.

Parameters:

Name	Type	Description
topicPath	String	the path of the selected immediate descendant
type	Session.notifications.TopicNotificationType	the type of notification

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onError(error)

Notification of a contextual error related to this listener. This is analogous to an Error being thrown. Situations in which onError is called include the session being closed before the listener is registered, a communication timeout, or a problem with the provided parameters. No further calls will be made to this listener.

Parameters:

Name	Type	Description
error	Object	The error

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onTopicNotification(topicPath, specification, type)

A notification for a selected topic.

Parameters:

Name	Type	Description
topicPath	String	the path of the selected topic
specification	diffusion.topics.TopicSpecification	the specification of the topic that this notification is for
type	Session.notifications.TopicNotificationType	the type of notification