Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.jclouds.concurrent; import java.util.Map; import java.util.concurrent.Future; import com.google.common.collect.ImmutableMap; import com.google.common.collect.Iterables; /** * A failure occurred while concurrently operating on an Iterable * * @author Adrian Cole */ @SuppressWarnings("serial") public final class TransformParallelException extends RuntimeException { private final Map<?, Future<?>> success; private final Map<?, Exception> exceptions; public TransformParallelException(Map<?, Future<?>> success, Map<?, Exception> exceptions, String messagePrefix) { super(String.format("error %s: %s", messagePrefix, exceptions)); this.success = ImmutableMap.copyOf(success); this.exceptions = ImmutableMap.copyOf(exceptions); initCause(Iterables.get(exceptions.values(), 0)); } /** * @return Elements that performed the transform without error */ public Map<?, Future<?>> getSuccessfulToValue() { return success; } /** * @return Elements that failed during the transform */ public Map<?, Exception> getFromToException() { return exceptions; } }