cgl.narada.service.time.ntptime
Class TimeServiceImpl

java.lang.Object
  cgl.narada.service.time.ntptime.TimeServiceImpl

All Implemented Interfaces:

TimeService

public class TimeServiceImpl
extends Object
implements TimeService

This class is a singleton class and should be used to retun the adjusted time value. NTP protocol implementation receives time from this class. The only method implemented in this class is getTime(), which should be used to get the adjusted current time.

Method Summary

long	getDelta() Gets the last change in the offset value
static TimeServiceImpl	getInstance() Gets the only instance of TimeServiceImpl.
long	getOffset() Gets offset value between the local computer's time and the computed time from NTP protocol.
ServiceException	getServiceException() Returns ServiceException
long	getTimestamp() Gets adjusted time
void	setOffset(long offDelta) Adjusts the offset value by delta.
void	setServiceException(ServiceException serviceException) Sets exception

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static TimeServiceImpl getInstance()

Gets the only instance of TimeServiceImpl.

Returns:

TimeServiceImpl - this object

getDelta

public long getDelta()

Gets the last change in the offset value

Returns:

long - last change in the offset value

setOffset

public void setOffset(long offDelta)

Adjusts the offset value by delta. If the new time value would be less than the last time value provided, it is not updated.

Parameters:

offDelta - - adjustment to be made to offset

getOffset

public long getOffset()

Gets offset value between the local computer's time and the computed time from NTP protocol.

Specified by:

getOffset in interface TimeService

Returns:

long - offset value

setServiceException

public void setServiceException(ServiceException serviceException)

Sets exception

Parameters:

serviceException -

getServiceException

public ServiceException getServiceException()

Returns ServiceException

Returns:

ServiceException

getTimestamp

public long getTimestamp()
                  throws ServiceException

Gets adjusted time

Specified by:

getTimestamp in interface TimeService

Returns:

long - adjusted time in milliseconds

Throws:

ServiceException