de.hawhamburg.reachability.ui.frame.resource

Class ReachabilityUIUpdater

java.lang.Object

java.lang.Thread

de.hawhamburg.reachability.ui.frame.resource.ReachabilityUIUpdater

All Implemented Interfaces:

StopableObject, java.lang.Runnable

public class ReachabilityUIUpdater
extends java.lang.Thread
implements StopableObject

Updates the ReachabilityUI with new reachability status informations.

This thread shall keep the ReachabilityUI up to date.

Version:

"2013.42"

Author:

"Malte Kantak <malte.kantak@hotmail.de>"

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields

Modifier and Type	Field and Description
private de.hawhamburg.livingplace.messaging.activemq.wrapper.LPSubscriber	infoTopic An LPSubscriber, which listens on the reachability status topic (REACHABILITY_AGENT_RESULT_TOPIC).
private java.util.Map<ReachabilityGroup,ReachabilityStatus>	internStatus An hash map holding the last known states of reachability for each ReachabilityGroup item.
private boolean	shutDown Determines if the method shutDown() has been called.
private ReachabilityUI	ui The ReachabilityUI object, which shall be updated.

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
ReachabilityUIUpdater(ReachabilityUI sourceUi) Generates a new ReachabilityUIUpdater thread to keep the ReachabilityUI UI up to date.

Method Summary

Methods

Modifier and Type	Method and Description
void	end() Disconnects the infoTopic, if it isn't null.
void	init() Opens a connection the the reachability information topic (REACHABILITY_AGENT_RESULT_TOPIC) and initializes the intern state hash map internStatus with ReachabilityStatus.NOT_CALCULATED.
boolean	isActive() Determines whether the method StopableObject.shutDown() has been called on this object or not.
void	run() Connects to the reachability information topic using init() and frequently tries to get the newest reachability states from this topic.
void	shutDown() Shuts the object down.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Field Detail

ui

private ReachabilityUI ui

The ReachabilityUI object, which shall be updated.

shutDown

private boolean shutDown

Determines if the method shutDown() has been called.

infoTopic

private de.hawhamburg.livingplace.messaging.activemq.wrapper.LPSubscriber infoTopic

An LPSubscriber, which listens on the reachability status topic (REACHABILITY_AGENT_RESULT_TOPIC).

internStatus

private java.util.Map<ReachabilityGroup,ReachabilityStatus> internStatus

An hash map holding the last known states of reachability for each ReachabilityGroup item.

Constructor Detail

ReachabilityUIUpdater

public ReachabilityUIUpdater(ReachabilityUI sourceUi)

Generates a new ReachabilityUIUpdater thread to keep the ReachabilityUI UI up to date.

Parameters:

sourceUi - A ReachabilityUI, which shall be updated.

Method Detail

shutDown

public final void shutDown()

Description copied from interface: StopableObject

Shuts the object down. The method shall ensure, that all opened or started resources (e.g. ActiveMQ connections, started threads) will be controlled shut down before the objects ends itself.

Specified by:

shutDown in interface StopableObject

See Also:

StopableObject.shutDown()

isActive

public final boolean isActive()

Description copied from interface: StopableObject

Determines whether the method StopableObject.shutDown() has been called on this object or not.

Specified by:

isActive in interface StopableObject

Returns:

true if shutDown() wasn't called, otherwise false.

See Also:

StopableObject.isActive()

run

public final void run()

Connects to the reachability information topic using init() and frequently tries to get the newest reachability states from this topic. If a new state arrives, the ReachabilityUI ui will be updated using ReachabilityUI.refresh(Map).

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

init

public final void init()

Opens a connection the the reachability information topic (REACHABILITY_AGENT_RESULT_TOPIC) and initializes the intern state hash map internStatus with ReachabilityStatus.NOT_CALCULATED.

end

public final void end()

Disconnects the infoTopic, if it isn't null.