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Minimal definitions library that provides very abstract interfaces with well defined but generic semantics, focused on code reuse.

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/**
 *  Copyright (c) 2010-2012, The StaccatoCommons Team
 *
 *  This program 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; version 3 of the License.
 *
 *  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 Lesser General Public License for more details.
 */

package net.sf.staccatocommons.defs.partial;


/**
 * Interface for objects that understand {@link #size()} message. It extends the
 * {@link EmptyAware} interface.
 * 
 * @author flbulgarelli
 * 
 */
public interface SizeAware extends EmptyAware {

  /**
   * Answers the size of this size aware. It should be a non
   * negative int.
   * 
   * @return the size
   */
  int size();

  /**
   * Answers if this {@link SizeAware} is empty. It should be
   * true that
   * 
   * aSizeAware.isEmpty() == (aSizeAware.size() == 0)
   */
  @Override
  boolean isEmpty();
}