content: /*
   * $Header$
   * $Revision$
   * $Date$
   *
   * ====================================================================
   *
   * Copyright 2000-2002 bob mcwhirter & James Strachan.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   * 
   *   * Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   * 
   *   * Redistributions in binary form must reproduce the above copyright
   *     notice, this list of conditions and the following disclaimer in the
   *     documentation and/or other materials provided with the distribution.
   * 
   *   * Neither the name of the Jaxen Project nor the names of its
   *     contributors may be used to endorse or promote products derived 
   *     from this software without specific prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
   * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
   * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
   * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * ====================================================================
   * This software consists of voluntary contributions made by many 
   * individuals on behalf of the Jaxen Project and was originally 
   * created by bob mcwhirter <bob@werken.com> and 
   * James Strachan <jstrachan@apache.org>.  For more information on the 
   * Jaxen Project, please see <http://www.jaxen.org/>.
   * 
   * $Id$
   */
  
  
  package org.jaxen.util;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  import java.util.NoSuchElementException;
  
  /**
   * @deprecated This class is undocumented and untested.
   *     It will be removed in a future release.
   */
  public class LinkedIterator implements Iterator
  {
      private List iterators;
      private int  cur;
  
      public LinkedIterator()
      {
          this.iterators = new ArrayList();
          this.cur       = 0;
      }
  
      public void addIterator(Iterator i)
      {
          this.iterators.add( i );
      }
  
      public boolean hasNext()
      {
          boolean has = false;
  
          if ( this.cur < this.iterators.size() )
          {
              has = ((Iterator)this.iterators.get( this.cur )).hasNext();
  
              if ( ! has
                   &&
                   this.cur < this.iterators.size() )
              {
                  ++this.cur;
                  has = hasNext();
              }
          }
          else
          {
              has = false;
          }
  
          return has;
      }
  
      public Object next()
      {
          if ( ! hasNext() )
          {
              throw new NoSuchElementException();
          }
  
          return ((Iterator)this.iterators.get( this.cur )).next();
      }
  
      /**
       * This operation is not supported.
       * 
       * @throws UnsupportedOperationException
       */
      public void remove()
      {
          throw new UnsupportedOperationException();
      }
  }
  