/*

  * Copyright 1999-2001,2004 The Apache Software Foundation.

  * 

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  * 

  *      http://www.apache.org/licenses/LICENSE-2.0

  * 

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */ 

 package org.apache.commons.workflow;

 /**

  * <p>An <strong>Iterator</strong> is a <code>Block</code> that conditionally

  * repeats the nested Steps associated with the Block more than once (such as

  * a Block that implements "while" or "for" functionality).  This is a tagging

  * interface only - it is useful to help Steps that implement "break" or

  * "continue" type processing to detect whether they have been invoked

  * correctly (nested inside an Iterator) or not.</p>

  *

  * @version $Revision: 155475 $ $Date: 2005-02-26 13:31:11 +0000 (Sat, 26 Feb 2005) $

  * @author Craig R. McClanahan

  */

 public interface Iterator extends Block {

     // No extra functionality is defined

 }