Package ch.hevs.cloudio.endpoint

Interface CloudioAttributeListener<T>

public interface CloudioAttributeListener<T>

This interface enables an application object to get notified as soon as there was a new value set to an attribute. If the change was set from the local application or from the cloud does not matter. This means that even on attributes with a @Measure constraint, you can add listeners in order to get notified about the applications own changes to the data model. This can be handy if in addition to the cloud, there is a local UI and application logic.

Example:

 class Switch extends ch.hevs.cloudio.endpoint.CloudioObject {
    @SetPoint
     public CloudioAttribute<boolean> state;

    @Measure
     public CloudioAttribute<boolean> stateFeedback;
 }

 class MySwitchSim extends Switch {
     public MySwitchSim() {
         state.addListener(new CloudioAttributeListener() {
            @Override
             void attributeHasChanged(final CloudioAttribute attribute) {
                 stateFeedback.setValue(attribute.getValue());
             }
         });
     }
 }
 

Method Summary

Modifier and Type	Method	Description
void	attributeHasChanged(CloudioAttribute<T> attribute)	This method is called upon an attribute has been changed.

Method Detail

attributeHasChanged

void attributeHasChanged(CloudioAttribute<T> attribute)

This method is called upon an attribute has been changed.

Parameters:

attribute - Attribute that has changed.