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 }