code: private boolean queryArticle()
  		throws SQLException
  	{
  
  		Statement statement = this.connection.createStatement();
  
  		String query = "SELECT ArticleID, FullRevisionPKs, RevisionCounter "
  				+ "FROM index_articleID_rc_ts " + "WHERE articleID > "
  				+ this.currentArticleID + " LIMIT " + MAX_NUMBER_RESULTS;
  
  		resultArticles = statement.executeQuery(query);
  
  		if (resultArticles.next()) {
  
  			this.currentArticleID = resultArticles.getInt(1);
  			return (this.lastArticleID == -1)
  					|| (this.currentArticleID <= this.lastArticleID);
  		}
  
  		return false;
  	}
docs: Retrieves the next articles from the article index.
  
  @return whether the query contains results or not
  @throws SQLException
  if an error occurs while executing the query