jhomenet.hw.pollers
Class PollingService

java.lang.Object
  jhomenet.hw.pollers.PollingService

All Implemented Interfaces:

java.beans.PropertyChangeListener, java.util.EventListener, HardwareRegistryListener, Service

public class PollingService
extends java.lang.Object
implements Service, HardwareRegistryListener, java.beans.PropertyChangeListener

Manages the polling of sensor hardware.
Id: $Id: PollingService.java,v 1.18 2005/11/09 22:50:26 dhirwinjr Exp $

Author:

David Irwin

Nested Class Summary

static class

PollingService.PollingTypes Define the different polling types.

Field Summary

static java.lang.String	HARDWARE_POLLING
static java.lang.String	POLLING_TYPE

Method Summary

java.util.ArrayList<java.lang.String>	getPollingList(PollingService.PollingTypes pollingType)
PollingService.PollingTypes	getPollingType(java.lang.String pollingTypeDesc) Get the polling type given the description.
java.util.List<PollingService.PollingTypes>	getPollingTypes() Return a list of polling types.
Scheduler	getSchedulerReference() Get a reference to the scheduler.
void	hardwareRegistered(HardwareRegistryEvent event) Receives hardware registry events.
void	hardwareUnregistered(HardwareRegistryEvent event) Receives a hardware unregistered event.
void	hardwareUpdate(HardwareRegistryEvent event) Receives a hardware update event.
void	initializeService() Initialize the polling service.
static PollingService	instance() Return an instance of the polling manager.
void	propertyChange(java.beans.PropertyChangeEvent evt) Received a property change event.
void	startService() Start the service.
void	stopService() Stop the service.

Methods inherited from class java.lang.Object

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

Field Detail

POLLING_TYPE

public static final java.lang.String POLLING_TYPE

See Also:

Constant Field Values

HARDWARE_POLLING

public static final java.lang.String HARDWARE_POLLING

See Also:

Constant Field Values

Method Detail

instance

public static PollingService instance()

Return an instance of the polling manager.

Returns:

A reference to the polling manager

propertyChange

public void propertyChange(java.beans.PropertyChangeEvent evt)

Received a property change event. This method is used to watch for changes in hardware sensor objects, in particular the polling type. When a sensor's polling type changes, the polling service needs to be updated to reflect this change.

Specified by:

propertyChange in interface java.beans.PropertyChangeListener

See Also:

PropertyChangeListener.propertyChange(java.beans.PropertyChangeEvent)

initializeService

public void initializeService()

Initialize the polling service.

Specified by:

initializeService in interface Service

startService

public void startService()

Description copied from interface: Service

Start the service.

Specified by:

startService in interface Service

See Also:

Service.startService()

stopService

public void stopService()

Description copied from interface: Service

Stop the service.

Specified by:

stopService in interface Service

See Also:

Service.stopService()

getSchedulerReference

public Scheduler getSchedulerReference()

Description copied from interface: Service

Get a reference to the scheduler.

Specified by:

getSchedulerReference in interface Service

Returns:

Reference to the scheduler

See Also:

Service.getSchedulerReference()

getPollingTypes

public java.util.List<PollingService.PollingTypes> getPollingTypes()

Return a list of polling types.

Returns:

The list of polling types.

getPollingType

public PollingService.PollingTypes getPollingType(java.lang.String pollingTypeDesc)

Get the polling type given the description.

Parameters:

pollingTypeDesc - A description of the polling type.

Returns:

A reference to the corresponding polling type.

getPollingList

public java.util.ArrayList<java.lang.String> getPollingList(PollingService.PollingTypes pollingType)

hardwareRegistered

public void hardwareRegistered(HardwareRegistryEvent event)

Receives hardware registry events.

Specified by:

hardwareRegistered in interface HardwareRegistryListener

Parameters:

event - Hardware event

See Also:

jhomenet.hw.management.HardwareRegistryListener#hardwareRegistered(NewHardwareEvent)

hardwareUpdate

public void hardwareUpdate(HardwareRegistryEvent event)

Receives a hardware update event.

Specified by:

hardwareUpdate in interface HardwareRegistryListener

Parameters:

event - Hardware event

See Also:

HardwareRegistryListener.hardwareUpdate(jhomenet.hw.management.HardwareRegistryEvent)

hardwareUnregistered

public void hardwareUnregistered(HardwareRegistryEvent event)

Receives a hardware unregistered event.

Specified by:

hardwareUnregistered in interface HardwareRegistryListener

Parameters:

event - Hardware event

See Also:

HardwareRegistryListener.hardwareUnregistered(HardwareRegistryEvent)