package org.paneris.bibliomania.metasearch.util;
   
   import java.util.Enumeration;
   import java.util.NoSuchElementException;
   
   import org.paneris.bibliomania.metasearch.BookStockingFactory;
   
   public abstract class SearchResultsBase
       extends HackParser implements Enumeration {
  
    protected BookStockingFactory stockings;
  
    public SearchResultsBase(byte[] text,
                             BookStockingFactory stockings) {
      super(text);
      this.stockings = stockings;
    }
  
    protected abstract Object more();
  
    private Object next = null;
  
    public synchronized boolean hasMoreElements() {
      return next != null || (next = more()) != null;
    }
  
    public synchronized Object nextElement() {
      if (!hasMoreElements())
        throw new NoSuchElementException();
      Object it = next;
      next = null;
      return it;
    }
  }