svn-gvsig-desktop / trunk / libraries / libRemoteServices / src / org / gvsig / remoteClient / taskplanning / ITaskPlanner.java @ 5156
History | View | Annotate | Download (2.58 KB)
| 1 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
|---|---|
| 2 |
*
|
| 3 |
* Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.
|
| 4 |
*
|
| 5 |
* This program is free software; you can redistribute it and/or
|
| 6 |
* modify it under the terms of the GNU General Public License
|
| 7 |
* as published by the Free Software Foundation; either version 2
|
| 8 |
* of the License, or (at your option) any later version.
|
| 9 |
*
|
| 10 |
* This program is distributed in the hope that it will be useful,
|
| 11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 13 |
* GNU General Public License for more details.
|
| 14 |
*
|
| 15 |
* You should have received a copy of the GNU General Public License
|
| 16 |
* along with this program; if not, write to the Free Software
|
| 17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
| 18 |
*
|
| 19 |
* For more information, contact:
|
| 20 |
*
|
| 21 |
* Generalitat Valenciana
|
| 22 |
* Conselleria d'Infraestructures i Transport
|
| 23 |
* Av. Blasco Ib??ez, 50
|
| 24 |
* 46010 VALENCIA
|
| 25 |
* SPAIN
|
| 26 |
*
|
| 27 |
* +34 963862235
|
| 28 |
* gvsig@gva.es
|
| 29 |
* www.gvsig.gva.es
|
| 30 |
*
|
| 31 |
* or
|
| 32 |
*
|
| 33 |
* IVER T.I. S.A
|
| 34 |
* Salamanca 50
|
| 35 |
* 46005 Valencia
|
| 36 |
* Spain
|
| 37 |
*
|
| 38 |
* +34 963163400
|
| 39 |
* dac@iver.es
|
| 40 |
*/
|
| 41 |
|
| 42 |
/* CVS MESSAGES:
|
| 43 |
*
|
| 44 |
* $Id: ITaskPlanner.java 5156 2006-05-12 07:15:45Z jaume $
|
| 45 |
* $Log$
|
| 46 |
* Revision 1.1 2006-05-12 07:15:45 jaume
|
| 47 |
* *** empty log message ***
|
| 48 |
*
|
| 49 |
* Revision 1.1 2006/05/11 17:18:06 jaume
|
| 50 |
* Un planificador, monitorizador, de descargas que trabaja en segundo plano
|
| 51 |
*
|
| 52 |
*
|
| 53 |
*/
|
| 54 |
package org.gvsig.remoteClient.taskplanning; |
| 55 |
|
| 56 |
/**
|
| 57 |
* <p>
|
| 58 |
* ITaskPlanner provides an interface to program your own task planning. It gives
|
| 59 |
* you operations for pick a task from the queue according on the criteria that
|
| 60 |
* you designed.<br>
|
| 61 |
* </p>
|
| 62 |
* <p>
|
| 63 |
* The simplest implementation of ITaskPlanner would be a FIFO task planner (see
|
| 64 |
* FIFOTaskPlanner.java) which takes jobs from a task queue in the same order
|
| 65 |
* they were put. But any kind of planner is possible (SJF, LIFO, RoundRobin, etc.).
|
| 66 |
* </p>
|
| 67 |
* @author jaume dominguez faus - jaume.dominguez@iver.es
|
| 68 |
*
|
| 69 |
*/
|
| 70 |
public interface ITaskPlanner { |
| 71 |
/**
|
| 72 |
* Takes the next task to be executed.
|
| 73 |
* @return IRunnableTask representing the next task to be executed
|
| 74 |
*/
|
| 75 |
public IRunnableTask nextTask();
|
| 76 |
|
| 77 |
/**
|
| 78 |
* Takes the previous executed task. Notice that it may or may not have
|
| 79 |
* sense for specific implementations. For example, in a FIFO-like planner,
|
| 80 |
* the task is taken from the queue, executed until it is finished and
|
| 81 |
* removed from the queue. So, there is no previous task.
|
| 82 |
*
|
| 83 |
* @return IRunnableTask representing the previous executed task, or null
|
| 84 |
* if none.
|
| 85 |
*/
|
| 86 |
public IRunnableTask previousTask();
|
| 87 |
} |