source: trunk/gli/src/org/greenstone/gatherer/util/EnumeratedVector.java@ 4293

/**
 *#########################################################################
 *
 * A component of the Gatherer application, part of the Greenstone digital
 * library suite from the New Zealand Digital Library Project at the
 * University of Waikato, New Zealand.
 *
 * <BR><BR>
 *
 * Author: John Thompson, Greenstone Digital Library, University of Waikato
 *
 * <BR><BR>
 *
 * Copyright (C) 1999 New Zealand Digital Library Project
 *
 * <BR><BR>
 *
 * 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 2 of the License, or
 * (at your option) any later version.
 *
 * <BR><BR>
 *
 * 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.
 *
 * <BR><BR>
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *########################################################################
 */
package org.greenstone.gatherer.util;
/**************************************************************************************
 * Title:        Gatherer
 * Description:  The Gatherer: a tool for gathering and enriching a digital collection.
 * Company:      The University of Waikato
 * Written:      15/07/02
 * Revised:      04/10/02 - Commented
 **************************************************************************************/
import java.util.Enumeration;
import java.util.Vector;
/** A Vector which also supports the enumeration interface.
 * @author John Thompson
 * @version 2.3
 */
public class EnumeratedVector
     extends Vector 
     implements Enumeration {
     /** The current index into our enumerated vector. */
     private int index = 0;
     /** Can we call nextElement() without running out of entries in the vector.
      * @return <i>true</i> if there are elements remaining, <i>false</i> otherwise.
      */
     public boolean hasMoreElements() {
          return (index < size());
     }
     /** Retrieve the next element indicated by the current index.
      * @return The next element as an <strong>Object</strong>.
      */
     public Object nextElement() {
          Object object = null;
          if(index < size()) {
                object = get(index);
                index++;
          }
          return object;
     }  
}