    001    /*
    002     * Copyright (C) 2011 The Guava Authors
    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 com.google.common.util.concurrent;
    018
    019    import com.google.common.annotations.Beta;
    020
    021    /**
    022     * {@link Error} variant of {@link java.util.concurrent.ExecutionException}. As
    023     * with {@code ExecutionException}, the error's {@linkplain #getCause() cause}
    024     * comes from a failed task, possibly run in another thread. That cause should
    025     * itself be an {@code Error}; if not, use {@code ExecutionException} or {@link
    026     * UncheckedExecutionException}. This allows the client code to continue to
    027     * distinguish between exceptions and errors, even when they come from other
    028     * threads.
    029     *
    030     * @author Chris Povirk
    031     * @since 10.0
    032     */
    033    @Beta
    034    public class ExecutionError extends Error {
    035      /**
    036       * Creates a new instance with {@code null} as its detail message.
    037       */
    038      protected ExecutionError() {}
    039
    040      /**
    041       * Creates a new instance with the given detail message.
    042       */
    043      protected ExecutionError(String message) {
    044        super(message);
    045      }
    046
    047      /**
    048       * Creates a new instance with the given detail message and cause.
    049       */
    050      public ExecutionError(String message, Error cause) {
    051        super(message, cause);
    052      }
    053
    054      /**
    055       * Creates a new instance with the given cause.
    056       */
    057      public ExecutionError(Error cause) {
    058        super(cause);
    059      }
    060
    061      private static final long serialVersionUID = 0;
    062    }