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/**
 * OW2 FraSCAti Examples: Counter
 * Copyright (C) 2009-2010 INRIA, University of Lille 1
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Contact: [email protected]
 *
 * Author: Philippe Merle
 *
 * Contributor(s): Nicolas Dolet
 */

package org.ow2.frascati.examples.counter.lib;

import org.osoa.sca.annotations.Scope;
import org.ow2.frascati.examples.counter.api.CounterService;

/**
 * A simple implementation of the {@link CounterService} interface.
 *
 * @author Philippe Merle
 */
@Scope("COMPOSITE")
public class CounterServiceImpl
  implements CounterService
{
  /** Internal state of the counter. */
  private int value;

  /**
   * Return the counter value.
   * 
   * @return the counter value.
   */
  public final int getValue() {
    System.out.println("CounterServiceImpl getValue(" + value + ')');
    return value;
  }

  /**
   * Increment the counter value.
   */
  public final void increment(int v) {
    System.out.println("CounterServiceImpl increment(" + v + ')');
    value = value + v;
  }

  /**
   * Decrement the counter value.
   */
  public final void decrement(int v) {
    System.out.println("CounterServiceImpl decrement(" + v + ')');
    value = value - v;
  }

  /**
   * Reset the counter value.
   */
  public final void resetIt() {
    System.out.println("CounterServiceImpl resetIt.");
    value = 0;
  }
}