001package org.cache2k.processor;
002
003/*
004 * #%L
005 * cache2k API
006 * %%
007 * Copyright (C) 2000 - 2016 headissue GmbH, Munich
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 * 
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 * 
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023/**
024 * Result tuple for {@code Cache.invokeAll()}.
025 *
026 * @see EntryProcessor
027 * @see org.cache2k.Cache#invokeAll
028 * @author Jens Wilke
029 */
030public interface EntryProcessingResult<R> {
031
032  /**
033   * Result of entry processing.
034   *
035   * @throws EntryProcessingException if an exception occurred during processing.
036   */
037  R getResult();
038
039  /**
040   * Original exception of entry processing or null if no exception occurred. If this is null,
041   * #getResult will throw no exception.
042   */
043  Throwable getException();
044
045}