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