Android Open Source - TaskButler Task Completion Comparator

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 * TaskCompletionComparator.java/*w  w  w  . j av  a 2s.  c o m*/
 * 
 * Copyright 2012 Jonathan Hasenzahl, James Celona, Dhimitraq Jorgji
 * 
 * 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, see <http://www.gnu.org/licenses/>.
 */

package edu.worcester.cs499summer2012.comparator;

import java.util.Comparator;

import edu.worcester.cs499summer2012.task.Task;

/**
 * Comparator for sorting tasks by completion status.
 * @author Jonathan Hasenzahl
 */
public class TaskCompletionComparator implements Comparator<Task> {

  /**
   * Compares two tasks by their completion status. Tasks that are
   * unfinished come before tasks that are finished.
   * @param lhs the first task
   * @param rhs the second task
   * @return -1 if the first task is unfinished and the second task is 
   *         finished; 1 if the first task is finished and the second task is
   *         unfinished; 0 otherwise 
   */
  public int compare(Task lhs, Task rhs) {
    if (!lhs.isCompleted() && rhs.isCompleted())
      return -1;
    else if (lhs.isCompleted() && !rhs.isCompleted())
      return 1;
    else
      return 0;
  }

}

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