org.android.activityminer.logic.devices
Class LocationDataCache

java.lang.Object
  org.android.activityminer.logic.util.AbstractActivatableComponentImpl
      org.android.activityminer.logic.devices.LocationDataCache

All Implemented Interfaces:

SensorDataSource<NetworkLocationData>, ActivatableComponent

public class LocationDataCache
extends AbstractActivatableComponentImpl
implements SensorDataSource<NetworkLocationData>

The data cache to hold location samples for scanner polls.

Field Summary

protected ConcurrentLinkedQueue<NetworkLocationData>	cache The sample cache.
private NetworkLocationData	lastSample Last sample.

Constructor Summary

LocationDataCache()
Constructor

Method Summary

void	add(double lon, double lat, double speed, long ts) Does add a new sample to the cache.
void	add(Location currentData, long ts) Does add a new sample to the cache.
protected boolean	hasSample() Test method for valid samples
protected void	onActivationStateChange(boolean active) Handler for activation state changes
void	onDestroy() This method is for cleanup in case of termination.
NetworkLocationData	takeSample(Long ts) Getter for the current sample

Methods inherited from class org.android.activityminer.logic.util.AbstractActivatableComponentImpl

isActive, setActivationState

Methods inherited from class java.lang.Object

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

Field Detail

lastSample

private NetworkLocationData lastSample

Last sample.

cache

protected final ConcurrentLinkedQueue<NetworkLocationData> cache

The sample cache.

Constructor Detail

LocationDataCache

public LocationDataCache()

Constructor

Method Detail

takeSample

public final NetworkLocationData takeSample(Long ts)

Description copied from interface: SensorDataSource

Getter for the current sample

Specified by:

takeSample in interface SensorDataSource<NetworkLocationData>

Parameters:

ts - the requested time stamp

Returns:

the current sample

onDestroy

public final void onDestroy()

Description copied from interface: SensorDataSource

This method is for cleanup in case of termination.

Specified by:

onDestroy in interface SensorDataSource<NetworkLocationData>

hasSample

protected final boolean hasSample()

Test method for valid samples

Returns:

true if a sample is available

onActivationStateChange

protected final void onActivationStateChange(boolean active)

Description copied from class: AbstractActivatableComponentImpl

Handler for activation state changes

Specified by:

onActivationStateChange in class AbstractActivatableComponentImpl

Parameters:

active - the new activation state

add

public final void add(Location currentData,
                      long ts)

Does add a new sample to the cache.

Parameters:

currentData - the location data to add

ts - the original sample time stamp

add

public final void add(double lon,
                      double lat,
                      double speed,
                      long ts)

Does add a new sample to the cache.

Parameters:

lon - the longitude

lat - the latitude

speed - the speed

ts - the original time stamp