<PTDiffusionJSONValueStreamDelegate> Protocol Reference

Introduction

Methods implemented by classes handling streamed events for JSON value topics.

This protocol defines the methods to be implemented by classes wishing to receive streamed events when updates are received from the server for JSON topics.

See also

PTDiffusionJSON

Since

5.9

Inheritance diagram for <PTDiffusionJSONValueStreamDelegate>:

Instance Methods
(void)	- diffusionStream:didUpdateTopicPath:specification:oldJSON:newJSON:
Instance Methods inherited from <PTDiffusionSubscriberStreamDelegate>
(void)	- diffusionStream:didSubscribeToTopicPath:specification:
(void)	- diffusionStream:didUnsubscribeFromTopicPath:specification:reason:
Instance Methods inherited from <PTDiffusionStreamDelegate>
(void)	- diffusionStream:didFailWithError:
(void)	- diffusionDidCloseStream:

Method Documentation

diffusionStream:didUpdateTopicPath:specification:oldJSON:newJSON:

- (void) diffusionStream:		(PTDiffusionValueStream *)	stream
didUpdateTopicPath:		(NSString *)	topicPath
specification:		(PTDiffusionTopicSpecification *)	specification
oldJSON:		(nullable PTDiffusionJSON *)	oldJson
newJSON:		(PTDiffusionJSON *)	newJson

An update was received for a topic path handled by a JSON value stream.

Parameters

stream	The value stream that received the update.
topicPath	The topic path that was updated.
specification	The specification for the updated topic.
oldJson	The previous value. If nil then this is the first value.
newJson	The new value derived from the last update received from the server.

Since

5.9