policyMgmt
Class CalendarTimer

java.lang.Object
  |
  +--java.lang.Thread
        |
        +--policyMgmt.CalendarTimer

public class CalendarTimer

extends java.lang.Thread

implements EventGenerator

This is an EventGenerator for TimeEvents that are sent on specific dates.

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

CalendarTimer(Policy policy)
Constructs a CalendarTimer.

CalendarTimer(Policy policy, java.util.Date when)
Constructs a CalendarTimer and adds a given date to trigger.

Method Summary

void	addDate(java.util.Date when) Add a trigger Date.
void	clearDate(java.util.Date when) Remove a Date.
void	expire(java.util.Date now) Remove passed Date.
java.util.Date	getFirst() Retrieve the next upcoming scheduled Date
java.util.Date	getNext(java.util.Date when) Retrieve the next scheduled Date after a given reference Date.
boolean	isEmpty() Check whether the queue of scheduled upcoming Events is empty.
void	run() The main loop of the CalendarTimer Thread.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getContextClassLoader, getName, getPriority, getThreadGroup, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setName, setPriority, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

CalendarTimer

public CalendarTimer(Policy policy)

Constructs a CalendarTimer.

Parameters:

policy - the Policy to receive the Events of this CalendarTimer

CalendarTimer

public CalendarTimer(Policy policy,
                     java.util.Date when)

Constructs a CalendarTimer and adds a given date to trigger.

Parameters:

policy - the Policy to receive the Events of this CalendarTimer

when - the Date to trigger

Method Detail

addDate

public void addDate(java.util.Date when)

Add a trigger Date.

Parameters:

when - the new Date

clearDate

public void clearDate(java.util.Date when)

Remove a Date.

Parameters:

when - the new Date

expire

public void expire(java.util.Date now)

Remove passed Date.

Parameters:

now - the reference Date (usually the current Date)

isEmpty

public boolean isEmpty()

Check whether the queue of scheduled upcoming Events is empty.

Returns:

true, if queue is empty

getFirst

public java.util.Date getFirst()

Retrieve the next upcoming scheduled Date

Returns:

the Date

getNext

public java.util.Date getNext(java.util.Date when)
                       throws java.util.NoSuchElementException

Retrieve the next scheduled Date after a given reference Date.

Parameters:

when - the reference Date

Returns:

the next scheduled Date after the reference Date

run

public void run()

The main loop of the CalendarTimer Thread.

Overrides:

run in class java.lang.Thread