1 /*
2 * Copyright 2001,2004 The Apache Software Foundation.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.apache.commons.scaffold.util;
18
19
20 /**
21 * Simple interface to describe public methods on a
22 * business logic object.
23 *
24 * @author Ted Husted
25 * @version $Revision: 155464 $ $Date: 2005-02-26 13:26:54 +0000 (Sat, 26 Feb 2005) $
26 */
27 public interface Executable {
28
29 // ------------------------------------------------------- Public Methods
30
31 /**
32 * Perform business logic for this bean, often by passing default
33 * values to the <code>Object execute(Object)</code> signature.
34 * If there is no default, it is recommended that a subclass throw
35 * an UnsupportedOperationException instead.
36 * @exception Throws Exception on any error. A subclass of
37 * ChainedException is recommended.
38 */
39 public Object execute() throws Exception;
40
41
42 /**
43 * Perform business logic for this, by retrieving any settings from
44 * the parameter object, and return a result object.
45 * @exception Throws Exception on any error. A subclass of
46 * ChainedException is recommended.
47 */
48 public Object execute(Object parameters) throws Exception;
49
50 }