Package org.eclipse.californium.core.observe

Class ObserveNotificationOrderer

java.lang.Object

org.eclipse.californium.core.observe.ObserveNotificationOrderer

public class ObserveNotificationOrderer
extends Object

The ObservingNotificationOrderer holds the state of an observe relation such as the timeout of the last notification and the current number.

Constructor Summary

Constructors

Constructor	Description
ObserveNotificationOrderer()	Creates a new notification orderer.
ObserveNotificationOrderer(Integer observe)	Creates a new notification orderer for a given notification.

Method Summary

Modifier and Type	Method	Description
int	getCurrent()	Returns the current notification number.
int	getNextObserveNumber()	Return a new observe option number.
boolean	isNew(Response response)	Check, if the provided notification is newer than the current one.
void	reset()	Reset state.

Methods inherited from class java.lang.Object

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

Constructor Details

ObserveNotificationOrderer

public ObserveNotificationOrderer()

Creates a new notification orderer.

ObserveNotificationOrderer

public ObserveNotificationOrderer(Integer observe)

Creates a new notification orderer for a given notification.

Parameters:

observe - value of observe option

Throws:

NullPointerException - if observe is null

Method Details

getNextObserveNumber

public int getNextObserveNumber()

Return a new observe option number. This method is thread-safe as it increases the option number atomically.

Returns:

a new observe option number

getCurrent

public int getCurrent()

Returns the current notification number.

Returns:

the current notification number

isNew

public boolean isNew(Response response)

Check, if the provided notification is newer than the current one.

Parameters:

response - the notification

Returns:

true, if the notification is new, or the response is no notify

reset

public void reset()

Reset state.

Since:

3.8