File Information
Library: IoT/Devices
Package: Generated
Header: IoT/Devices/DatapointEventDispatcher.h
Description
The base class for datapoints. Datapoints typically represent the result of sensor measurements, or data obtained from monitoring processes.
The main difference between a Datapoint and a Sensor is that a Sensor is typically an interface to a specific device (i.e., a temperature sensor), whereas a Datapoint holds a value that has been acquired from another device (via a network or bus system) or computed from other data points.
In addition to the methods defined in this interface, a Sensor implementation should expose the following properties:
- displayValue (string, optional): The current value of the datapoint, formatted as string for display purposes.
- updated (timestamp, optional): The point in time when the datapoint's value was last updated.
- access (string, optional): Access permissions ("rw" - read/write, "ro" - read-only, "wo" - write-only).
Subclasses of Datapoint implement specific value types.
Inheritance
Direct Base Classes: Poco::RemotingNG::EventDispatcher
All Base Classes: Poco::RefCountedObject, Poco::RemotingNG::EventDispatcher
Member Summary
Member Functions: event__invalidated, event__statusChanged, remoting__typeId
Inherited Functions: accept, attributes, duplicate, protocol, referenceCount, release, removeEventFilter, setEventFilter, setEventFilterImpl, subscribe, transportForSubscriber, unsubscribe
Constructors
DatapointEventDispatcher
DatapointEventDispatcher(
IDatapoint * pInterface,
const Poco::RemotingNG::Identifiable::ObjectId & objectId,
const std::string & protocol
);
Creates a DatapointEventDispatcher.
Destructor
~DatapointEventDispatcher 
virtual ~DatapointEventDispatcher();
Destroys the DatapointEventDispatcher.
Member Functions
event__invalidated
void event__invalidated(
const void * pSender
);
event__statusChanged
void event__statusChanged(
const void * pSender,
const IoT::Devices::DeviceStatusChange & data
);
remoting__typeId 
virtual const Poco::RemotingNG::Identifiable::TypeId & remoting__typeId() const;