com.airs.handlers

Class WeatherHandler

java.lang.Object

com.airs.handlers.WeatherHandler

All Implemented Interfaces:

Handler, Runnable

public class WeatherHandler
extends Object
implements Handler, Runnable

Class to read weather related sensors, specifically the VT, VF, VH, VC, VW, VI sensor

See Also:

Handler

Constructor Summary

Constructors

Constructor and Description
WeatherHandler(Context airs) Constructor, allocating all necessary resources for the handler Here, it's arming the semaphore and retrieving the reference to the XMLParser as well as a reference to the LocationManager

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	Acquire(String sensor, String query) Method to acquire sensor data Here, we start the thread for retrieving the weather and switch on the GPS, if not done before
void	destroyHandler() Method to release all handler resources Here, we unregister the location receiver, shut down the retrieval thread, unregister the connectivity receiver and release all semaphores
void	Discover() Method to discover the sensor symbols support by this handler, if the weather is supported As the result of the discovery, appropriate Sensor entries will be added to the SensorRepository
void	History(String sensor) Method to view historical chart of the given sensor symbol
void	run() run weather retrieval in separate thread
String	Share(String sensor) Method to share the last value of the given sensor

Methods inherited from class java.lang.Object

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

Constructor Detail

WeatherHandler

public WeatherHandler(Context airs)

Constructor, allocating all necessary resources for the handler Here, it's arming the semaphore and retrieving the reference to the XMLParser as well as a reference to the LocationManager

Parameters:

airs - Reference to the calling Context

Method Detail

Acquire

public byte[] Acquire(String sensor,
             String query)

Method to acquire sensor data Here, we start the thread for retrieving the weather and switch on the GPS, if not done before

Specified by:

Acquire in interface Handler

Parameters:

sensor - String of the sensor symbol

query - String of the query to be fulfilled - not used here

See Also:

Handler.Acquire(java.lang.String, java.lang.String)

Share

public String Share(String sensor)

Method to share the last value of the given sensor

Specified by:

Share in interface Handler

Parameters:

sensor - String of the sensor symbol to be shared

Returns:

human-readable string of the last sensor value

See Also:

Handler.Share(java.lang.String)

History

public void History(String sensor)

Method to view historical chart of the given sensor symbol

Specified by:

History in interface Handler

Parameters:

sensor - String of the symbol for which the history is being requested

See Also:

Handler.History(java.lang.String)

Discover

public void Discover()

Method to discover the sensor symbols support by this handler, if the weather is supported As the result of the discovery, appropriate Sensor entries will be added to the SensorRepository

Specified by:

Discover in interface Handler

See Also:

Handler.Discover(), Sensor, SensorRepository

run

public void run()

run weather retrieval in separate thread

Specified by:

run in interface Runnable

See Also:

Runnable.run()

destroyHandler

public void destroyHandler()

Method to release all handler resources Here, we unregister the location receiver, shut down the retrieval thread, unregister the connectivity receiver and release all semaphores

Specified by:

destroyHandler in interface Handler

See Also:

Handler.destroyHandler()