| /* |
| * 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.apache.commons.lang3.function; |
| |
| import java.util.Objects; |
| import java.util.function.Consumer; |
| |
| /** |
| * A functional interface like {@link Consumer} that declares a {@code Throwable}. |
| * |
| * @param <T> Consumed type 1. |
| * @param <E> Thrown exception. |
| * @since 3.11 |
| */ |
| @FunctionalInterface |
| public interface FailableConsumer<T, E extends Throwable> { |
| |
| /** NOP singleton */ |
| @SuppressWarnings("rawtypes") |
| FailableConsumer NOP = t -> {/* NOP */}; |
| |
| /** |
| * Returns The NOP singleton. |
| * |
| * @param <T> Consumed type 1. |
| * @param <E> Thrown exception. |
| * @return The NOP singleton. |
| */ |
| static <T, E extends Throwable> FailableConsumer<T, E> nop() { |
| return NOP; |
| } |
| |
| /** |
| * Accepts the consumer. |
| * |
| * @param object the parameter for the consumable to accept |
| * @throws E Thrown when the consumer fails. |
| */ |
| void accept(T object) throws E; |
| |
| /** |
| * Returns a composed {@code Consumer} like {@link Consumer#andThen(Consumer)}. |
| * |
| * @param after the operation to perform after this operation |
| * @return a composed {@code Consumer} like {@link Consumer#andThen(Consumer)}. |
| * @throws NullPointerException when {@code after} is null |
| */ |
| default FailableConsumer<T, E> andThen(final FailableConsumer<? super T, E> after) { |
| Objects.requireNonNull(after); |
| return (final T t) -> { |
| accept(t); |
| after.accept(t); |
| }; |
| } |
| } |