Package com.vaadin.hilla.signals

Class NumberSignal

java.lang.Object

com.vaadin.hilla.signals.Signal<T>

com.vaadin.hilla.signals.ValueSignal<Double>

com.vaadin.hilla.signals.NumberSignal

public class NumberSignal
extends ValueSignal<Double>

A signal that holds a number value.

Constructor Summary

Constructors

Constructor	Description
NumberSignal()	Creates a new NumberSignal with the default value of 0.
NumberSignal(Double defaultValue)	Creates a new NumberSignal with the provided default value.

Method Summary

Modifier and Type	Method	Description
protected boolean	processEvent(com.fasterxml.jackson.databind.node.ObjectNode event)	Processes the event and updates the signal value if needed.

Methods inherited from class com.vaadin.hilla.signals.ValueSignal

compareAndSet, createSnapshotEvent, getValue

Methods inherited from class com.vaadin.hilla.signals.Signal

equals, getId, getValueType, hashCode, submit, subscribe

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

NumberSignal

public NumberSignal(Double defaultValue)

Creates a new NumberSignal with the provided default value.

Parameters:

defaultValue - the default value

Throws:

NullPointerException - if the default value is null

NumberSignal

public NumberSignal()

Creates a new NumberSignal with the default value of 0.

Method Details

processEvent

protected boolean processEvent(com.fasterxml.jackson.databind.node.ObjectNode event)

Processes the event and updates the signal value if needed. Note that this method is not thread-safe and should be called from a synchronized context.

Overrides:

processEvent in class ValueSignal<Double>

Parameters:

event - the event to process

Returns:

true if the event was successfully processed and the signal value was updated, false otherwise.