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>A <strong>WorkflowException</strong> is the base class for exceptions 022 * related to the workflow engine framework.</p> 023 * 024 * @version $Revision: 155475 $ $Date: 2005-02-26 13:31:11 +0000 (Sat, 26 Feb 2005) $ 025 * @author Craig R. McClanahan 026 */ 027 028 public class WorkflowException extends Exception { 029 030 031 // ----------------------------------------------------------- Constructors 032 033 034 /** 035 * Construct an empty WorkflowException. 036 */ 037 public WorkflowException() { 038 039 super(); 040 041 } 042 043 044 /** 045 * Construct a WorkflowException with the specified message. 046 * 047 * @param message Message associated with this exception 048 */ 049 public WorkflowException(String message) { 050 051 super(message); 052 053 } 054 055 056 /** 057 * Construct a WorkflowException with the specified underlying cause. 058 * [JDK 1.4 compatible] 059 * 060 * @param cause Underlying root cause 061 */ 062 public WorkflowException(Throwable cause) { 063 064 super(); 065 this.cause = cause; 066 067 } 068 069 070 /** 071 * Construct a WorkflowException with the specified message and 072 * underlying cause. [JDK 1.4 compatbile] 073 * 074 * @param message Message associated with this exception 075 * @param cause Underlying root cause 076 */ 077 public WorkflowException(String message, Throwable cause) { 078 079 super(message); 080 this.cause = cause; 081 082 } 083 084 085 // ------------------------------------------------------------- Properties 086 087 088 /** 089 * The underlying cause exception (if any). 090 */ 091 protected Throwable cause = null; 092 093 public Throwable getCause() { 094 return (this.cause); 095 } 096 097 098 } 099 100 101