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    }