001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.juneau;
018
019import java.lang.reflect.*;
020import java.text.*;
021
022/**
023 * General exception that occurs when trying to execute a constructor, method, or field using reflection.
024 *
025 * <h5 class='section'>See Also:</h5><ul>
026 * </ul>
027 *
028 * @serial exclude
029 */
030public class ExecutableException extends BasicRuntimeException {
031
032   private static final long serialVersionUID = 1L;
033
034   /**
035    * Constructor.
036    *
037    * @param causedBy The cause of this exception.
038    * @param message The {@link MessageFormat}-style message.
039    * @param args Optional {@link MessageFormat}-style arguments.
040    */
041   public ExecutableException(Throwable causedBy, String message, Object...args) {
042      super(causedBy, message, args);
043   }
044
045   /**
046    * Constructor.
047    *
048    * @param causedBy The cause of this exception.
049    */
050   public ExecutableException(Throwable causedBy) {
051      super(causedBy);
052   }
053
054   /**
055    * Constructor.
056    *
057    * @param message The {@link MessageFormat}-style message.
058    * @param args Optional {@link MessageFormat}-style arguments.
059    */
060   public ExecutableException(String message, Object...args) {
061      super(message, args);
062   }
063
064   /**
065    * If the thrown exception was an {@link InvocationTargetException} returns the target exception.
066    * Otherwise returns the inner exception which is typically {@link IllegalArgumentException} or {@link IllegalAccessException}.
067    *
068    * @return The inner throwable.
069    */
070   public Throwable getTargetException() {
071      Throwable c = this.getCause();
072      return c instanceof InvocationTargetException ? ((InvocationTargetException)c).getTargetException() : c;
073   }
074}