Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 3

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.remoteclient.taskplanning;

/**

 * A simple FIFO task planner. The tasks returned by this planner are executed

 * enterely. It does not issue another task until the current is finished. 

 * @author jaume

 *

 */

public class FIFOTaskPlanner implements ITaskPlanner {

        IQueue queue;

        /**

         * Creates a new instance of FIFOTaskPlanner that will work against the

         * queue passed as paramenter 

         * @param queue, the IQueue to be planned

         */

        public FIFOTaskPlanner(IQueue queue) {

                this.queue = queue;

        }

        public IRunnableTask nextTask() {

                synchronized (this) {

                        return (IRunnableTask) queue.getTasks().remove(0);

                }

        }

        /**

         * FIFO plans have no previous tasks so, null is always returned.

         */

        public IRunnableTask previousTask() {

                return null;

        }

}