setter_impl.h File Reference

Abstract base class for all transport-specific setter (field writer) implementations. More...

#include "./node_impl.h"

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Classes
class	vlink::SetterImpl
	Transport-agnostic base for setter (field writer) node implementations. More...

Namespaces
namespace	vlink

Detailed Description

Abstract base class for all transport-specific setter (field writer) implementations.

SetterImpl is the intermediate layer between the generic Setter<T> template and a concrete transport backend. It inherits from NodeImpl and adds field-setter semantics:

• Value write via write() – sends the serialised latest value to all registered getters on the same topic.
• Synchronous notification via sync() – waits for the written value to be acknowledged or propagated, then fires a completion callback.

Field Model Overview

Unlike the event model (publish/subscribe), the field model maintains a single "latest value" per topic. A Setter always overwrites the previous value; a Getter can retrieve the most recent value at any time or be notified when it changes.

Note

Concrete subclasses must implement write(const Bytes&) and sync(SyncCallback&&).