svn-gvsig-desktop / trunk / libraries / libRemoteServices / src / org / gvsig / remoteClient / taskplanning / ITaskPlanner.java @ 5156
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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/* CVS MESSAGES:
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*
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* $Id: ITaskPlanner.java 5156 2006-05-12 07:15:45Z jaume $
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* $Log$
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* Revision 1.1 2006-05-12 07:15:45 jaume
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* *** empty log message ***
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*
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* Revision 1.1 2006/05/11 17:18:06 jaume
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* Un planificador, monitorizador, de descargas que trabaja en segundo plano
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*
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*
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*/
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package org.gvsig.remoteClient.taskplanning; |
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/**
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* <p>
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* ITaskPlanner provides an interface to program your own task planning. It gives
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* you operations for pick a task from the queue according on the criteria that
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* you designed.<br>
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* </p>
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* <p>
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* The simplest implementation of ITaskPlanner would be a FIFO task planner (see
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* FIFOTaskPlanner.java) which takes jobs from a task queue in the same order
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* they were put. But any kind of planner is possible (SJF, LIFO, RoundRobin, etc.).
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* </p>
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* @author jaume dominguez faus - jaume.dominguez@iver.es
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*
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*/
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public interface ITaskPlanner { |
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/**
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* Takes the next task to be executed.
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* @return IRunnableTask representing the next task to be executed
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*/
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public IRunnableTask nextTask();
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/**
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* Takes the previous executed task. Notice that it may or may not have
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* sense for specific implementations. For example, in a FIFO-like planner,
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* the task is taken from the queue, executed until it is finished and
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* removed from the queue. So, there is no previous task.
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*
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* @return IRunnableTask representing the previous executed task, or null
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* if none.
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*/
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public IRunnableTask previousTask();
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} |