Class IoT::Devices::VectorDatapoint

File Information

Library: IoT/Devices
Package: Datapoints
Header: IoT/Devices/VectorDatapoint.h

The base class for datapoints holding a vector value.

In addition to the methods defined in this interface, a VectorDatapoint implementation should expose the following properties:

displayValue (string, optional): The current value of the datapoint, formatted as string for display purposes.

Direct Base Classes: Datapoint

All Base Classes: Datapoint, Device

Member Functions: update, validValue, value

Inherited Functions: getFeature, getPropertyBool, getPropertyDouble, getPropertyInt, getPropertyInt16, getPropertyInt64, getPropertyString, getPropertyTimestamp, hasFeature, hasProperty, invalidate, setFeature, setPropertyBool, setPropertyDouble, setPropertyInt, setPropertyInt16, setPropertyInt64, setPropertyString, setPropertyTimestamp, valid

using Vector = std::vector < double >;

Destroys the VectorDatapoint.

virtual void update(
const Vector & value
) = 0;

Updates the value of the datapoint and makes it valid.

Not all Datapoint implementations may support this method.

virtual Poco::Optional < Vector > validValue() const = 0;

Returns the current value of the datapoint if it is valid, otherwise an empty value.

virtual Vector value() const = 0;

Returns the current value of the datapoint, even if it has been invalidated.

Use validValue() to get a valid value only.

Fired when an invalid datapoint becomes valid again, by being updated with a new value. The new valud is given as event argument.

Poco::BasicEvent < const Vector > valueChanged;

Fired when the value of the datapoint has changed.

Actual behavior of this event (e.g., minimum interval between fires) are implementation specific and can be configured via properties.

Poco::BasicEvent < const Vector > valueUpdated;

Fired when the value of the datapoint has been updated by calling update(). This event is also fired if the actual value has not changed.