/**
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2007 Sun Microsystems Inc. All Rights Reserved
*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the License). You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the License at
* https://opensso.dev.java.net/public/CDDLv1.0.html or
* opensso/legal/CDDLv1.0.txt
* See the License for the specific language governing
* permission and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* Header Notice in each file and include the License file
* at opensso/legal/CDDLv1.0.txt.
* If applicable, add the following below the CDDL Header,
* with the fields enclosed by brackets [] replaced by
* your own identifying information:
* "Portions Copyrighted [year] [name of copyright owner]"
*
* $Id: PeriodicGroupRunnable.java,v 1.2 2008/06/25 05:52:51 qcheng Exp $
*
*/
package com.sun.identity.common;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
/**
* Periodic task (task will be run periodically) which has handler separated
* (share the same ScheduleableGroupAction) can be scheduled to Timer or
* TimerPool by using PeriodicGroupRunnable. All the elements in the same
* PeriodicGroupRunnable must have the same timeout period and run period.
* Elements will be grouped by using the time they enter PeriodicGroupRunnable.
* ScheduleableGroupAction will only go through the elements which entered
* PeriodicGroupRunnable excess the timeout time.
*/
public class PeriodicGroupRunnable extends PeriodicRunnable implements
ScheduleableGroupAction {
protected ScheduleableGroupAction target;
/**
* Constructor of PeriodicGroupRunnable.
*
* @param target The ScheduleableGroupAction interface to be run on the
* objects when there is time
* @param runPeriod Run period in ms
* @param timeoutPeriod timeout period in ms
* @param removeElementAfterAction Whether to remove the elements after
* running the ScheduleableGroupAction on the objects
*/
public PeriodicGroupRunnable(ScheduleableGroupAction target,
long runPeriod, long timeoutPeriod, boolean removeElementAfterAction)
throws IllegalArgumentException {
super(runPeriod, timeoutPeriod, removeElementAfterAction);
this.target = target;
}
/**
* The function to be run on the objects when there is time.
*
* @param obj The object the function act on
*/
public void doGroupAction(Object obj) {
if (target != null) {
target.doGroupAction(obj);
}
}
/**
* Implements for TaskRunnable. Run the function of ScheduleableGroupAction
* on the objects in thisTurn 1 by 1, and interchange thisTurn and nextTurn.
*/
public void run() {
synchronized (thisTurn) {
if (!thisTurn.isEmpty()) {
for (Iterator iter = thisTurn.iterator(); iter.hasNext();) {
Object obj = iter.next();
doGroupAction(obj);
iter.remove();
}
}
}
synchronized (nextTurn[containerNeeded - 1]) {
Set tempSet = thisTurn;
for (int i = 0; i < containerNeeded + 1; i++) {
if (i == 0) {
thisTurn = nextTurn[0];
} else {
if (i == containerNeeded) {
nextTurn[containerNeeded - 1] = tempSet;
} else {
nextTurn[i - 1] = nextTurn[i];
}
}
}
}
}
}