<PTDiffusionStringValueStreamDelegate> Protocol Reference

Introduction

Methods implemented by classes handling streamed events for string 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 string topics.

See also

PTDiffusionPrimitive

Since

6.0

Inheritance diagram for <PTDiffusionStringValueStreamDelegate>:

Instance Methods
(void)	- diffusionStream:didUpdateTopicPath:specification:oldString:newString:
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:oldString:newString:

- (void) diffusionStream:		(PTDiffusionValueStream *)	stream
didUpdateTopicPath:		(NSString *)	topicPath
specification:		(PTDiffusionTopicSpecification *)	specification
oldString:		(nullable NSString *)	oldString
newString:		(nullable NSString *)	newString

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

Parameters

stream	The topic stream that received the update.
topicPath	The topic path that was updated.
specification	The specification for the updated topic.
oldString	The previous value. If nil then this is either the first value, or the previous value was nil indicating no value.
newString	The new value derived from the last update received from the server, or nil if there is no value.

Since

6.0