001 /* 002 * Copyright 1999-2001,2004 The Apache Software Foundation. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017 package org.apache.commons.workflow; 018 019 020 /** 021 * <p>Implementing <strong>Descriptors</strong> indicates that the corresponding 022 * object has an associated list of <code>Descriptor</code> objects associated 023 * with it, which can be manipulated through the methods defined in this 024 * interface. The documentation for each implementing object will describe 025 * the semantics of associated <code>Descriptor</code> object list. 026 * </p> 027 * 028 * @version $Revision: 155475 $ $Date: 2005-02-26 13:31:11 +0000 (Sat, 26 Feb 2005) $ 029 * @author Craig R. McClanahan 030 */ 031 032 public interface Descriptors { 033 034 035 // --------------------------------------------------------- Public Methods 036 037 038 /** 039 * Add a new <code>Descriptor</code> to the set associated with 040 * this object. 041 * 042 * @param descriptor The Descriptor to be added 043 */ 044 public void addDescriptor(Descriptor descriptor); 045 046 047 /** 048 * Return the set of <code>Descriptor</code> objects associated with 049 * this object, in the order that they were originally added. 050 */ 051 public Descriptor[] findDescriptors(); 052 053 054 /** 055 * Remove an existing <code>Descriptor</code> from the set associated 056 * with this object. 057 * 058 * @param descriptor The Descriptor to be removed 059 */ 060 public void removeDescriptor(Descriptor descriptor); 061 062 063 }