Class IoT::Devices::IScalarDatapoint

File Information

Library: IoT/Devices
Package: Generated
Header: IoT/Devices/IScalarDatapoint.h

Description

A scalar datapoint holding a single numeric (double) value.

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

physicalQuantity (string): The physical quantity that is being measured by the datapoint, e.g. "temperature".
physicalUnit (string): The physical unit the measured value is being represented in (e.g. "Cel" for degree Celsius). This should use the "c/s" symbols from the Unified Code for Units of Measure (http://unitsofmeasure.org/ucum.html). See the PHYSICAL_UNIT_* strings for predefined values.
displayValue (string, optional): The current value of the datapoint, formatted as string for display purposes.

Inheritance

Direct Base Classes: IDatapoint

All Base Classes: IDatapoint, IDevice, Poco::OSP::Service, Poco::RefCountedObject

Known Derived Classes: ScalarDatapointRemoteObject

Member Summary

Member Functions: clearValueChangedFilter, isA, remoting__enableEvents, remoting__typeId, setValueChangedHysteresisFilter, setValueChangedIsGreaterThanFilter, setValueChangedIsGreaterThanOrEqualToFilter, setValueChangedIsLessThanFilter, setValueChangedIsLessThanOrEqualToFilter, setValueChangedMinimumDeltaFilter, setValueChangedMinimumIntervalAndDeltaFilter, setValueChangedMinimumIntervalFilter, setValueChangedMinimumIntervalOrDeltaFilter, type, update, validValue, value

Inherited Functions: duplicate, getFeature, getPropertyBool, getPropertyDouble, getPropertyInt, getPropertyInt16, getPropertyInt64, getPropertyString, getPropertyTimestamp, hasFeature, hasProperty, invalidate, isA, referenceCount, release, remoting__enableEvents, remoting__typeId, setFeature, setPropertyBool, setPropertyDouble, setPropertyInt, setPropertyInt16, setPropertyInt64, setPropertyString, setPropertyTimestamp, type, valid

Types Aliases

Ptr

using Ptr = Poco::AutoPtr < IScalarDatapoint >;

Constructors

IScalarDatapoint

IScalarDatapoint();

Creates a IScalarDatapoint.

Destructor

~IScalarDatapoint

virtual ~IScalarDatapoint();

Destroys the IScalarDatapoint.

Member Functions

clearValueChangedFilter

virtual void clearValueChangedFilter(
const std::string & subscriberURI
) = 0;

Clears the filter set for the valueChanged event.

isA

bool isA(
const std::type_info & otherType
) const;

Returns true if the class is a subclass of the class given by otherType.

See also: IoT::Devices::IDatapoint::isA()

remoting__enableEvents

virtual std::string remoting__enableEvents(
Poco::RemotingNG::Listener::Ptr pListener,
bool enable = bool (true)
) = 0;

Enable or disable delivery of remote events.

The given Listener instance must implement the Poco::RemotingNG::EventListener interface, otherwise this method will fail with a RemotingException.

This method is only used with Proxy objects; calling this method on a RemoteObject will do nothing.

remoting__typeId

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

Returns the TypeId of the class.

setValueChangedHysteresisFilter

virtual void setValueChangedHysteresisFilter(
    const std::string & subscriberURI,
    double lowerThreshold,
    double upperThreshold
) = 0;

Sets a Poco::RemotingNG::HysteresisFilter for the valueChanged event.

setValueChangedIsGreaterThanFilter

virtual void setValueChangedIsGreaterThanFilter(
const std::string & subscriberURI,
double limit
) = 0;

Sets a Poco::RemotingNG::GreaterThanFilter for the valueChanged event.

setValueChangedIsGreaterThanOrEqualToFilter

virtual void setValueChangedIsGreaterThanOrEqualToFilter(
const std::string & subscriberURI,
double limit
) = 0;

Sets a Poco::RemotingNG::GreaterThanFilter for the valueChanged event.

setValueChangedIsLessThanFilter

virtual void setValueChangedIsLessThanFilter(
const std::string & subscriberURI,
double limit
) = 0;

Sets a Poco::RemotingNG::LessThanFilter for the valueChanged event.

setValueChangedIsLessThanOrEqualToFilter

virtual void setValueChangedIsLessThanOrEqualToFilter(
const std::string & subscriberURI,
double limit
) = 0;

Sets a Poco::RemotingNG::LessThanOrEqualToFilter for the valueChanged event.

setValueChangedMinimumDeltaFilter

virtual void setValueChangedMinimumDeltaFilter(
const std::string & subscriberURI,
double delta
) = 0;

Sets a Poco::RemotingNG::MinimumDeltaFilter for the valueChanged event.

setValueChangedMinimumIntervalAndDeltaFilter

virtual void setValueChangedMinimumIntervalAndDeltaFilter(
    const std::string & subscriberURI,
    long milliseconds,
    double delta
) = 0;

Sets a Poco::RemotingNG::MinimumIntervalAndDeltaFilter for the valueChanged event.

setValueChangedMinimumIntervalFilter

virtual void setValueChangedMinimumIntervalFilter(
const std::string & subscriberURI,
long milliseconds
) = 0;

Sets a Poco::RemotingNG::MinimumIntervalFilter for the valueChanged event.

setValueChangedMinimumIntervalOrDeltaFilter

virtual void setValueChangedMinimumIntervalOrDeltaFilter(
    const std::string & subscriberURI,
    long milliseconds,
    double delta
) = 0;

Sets a Poco::RemotingNG::MinimumIntervalOrDeltaFilter for the valueChanged event.

type

const std::type_info & type() const;

Returns the type information for the object's class.

See also: IoT::Devices::IDatapoint::type()

update

virtual void update(
double value
) = 0;

Updates the value of the datapoint and makes it valid.

Not all Datapoint implementations may support this method.

validValue

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

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

value

virtual double value() const = 0;

Returns the current value held by the datapoint, even if the datapoint has been invalidated.

Use validValue() to get a valid value only.

IoT::Devices

class IScalarDatapoint