001/*
002 * Copyright (C) 2011 The Guava Authors
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
005 * in compliance 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
010 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
011 * or implied. See the License for the specific language governing permissions and limitations under
012 * the License.
013 */
014
015package com.google.common.util.concurrent;
016
017import com.google.common.annotations.GwtCompatible;
018import javax.annotation.Nullable;
019
020/**
021 * {@link Error} variant of {@link java.util.concurrent.ExecutionException}. As with {@code
022 * ExecutionException}, the error's {@linkplain #getCause() cause} comes from a failed task,
023 * possibly run in another thread. That cause should itself be an {@code Error}; if not, use {@code
024 * ExecutionException} or {@link UncheckedExecutionException}. This allows the client code to
025 * continue to distinguish between exceptions and errors, even when they come from other threads.
026 *
027 * @author Chris Povirk
028 * @since 10.0
029 */
030@GwtCompatible
031public class ExecutionError extends Error {
032  /**
033   * Creates a new instance with {@code null} as its detail message.
034   */
035  protected ExecutionError() {}
036
037  /**
038   * Creates a new instance with the given detail message.
039   */
040  protected ExecutionError(@Nullable String message) {
041    super(message);
042  }
043
044  /**
045   * Creates a new instance with the given detail message and cause.
046   */
047  public ExecutionError(@Nullable String message, @Nullable Error cause) {
048    super(message, cause);
049  }
050
051  /**
052   * Creates a new instance with the given cause.
053   */
054  public ExecutionError(@Nullable Error cause) {
055    super(cause);
056  }
057
058  private static final long serialVersionUID = 0;
059}