IoT::Devices

class DatapointEventDispatcher

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
);

Destructor

~DatapointEventDispatcher virtual

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 inline

virtual const Poco::RemotingNG::Identifiable::TypeId & remoting__typeId() const;

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