001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.commons.io.function;
019
020import java.io.IOException;
021import java.util.Objects;
022import java.util.function.Consumer;
023
024/**
025 * Like {@link Consumer} but throws {@link IOException}.
026 *
027 * @param <T> the type of the input to the operations.
028 * @since 2.7
029 */
030@FunctionalInterface
031public interface IOConsumer<T> {
032
033    /**
034     * Performs this operation on the given argument.
035     *
036     * @param t the input argument
037     * @throws IOException if an I/O error occurs.
038     */
039    void accept(T t) throws IOException;
040
041    /**
042     * Returns a composed {@code IoConsumer} that performs, in sequence, this operation followed by the {@code after}
043     * operation. If performing either operation throws an exception, it is relayed to the caller of the composed
044     * operation. If performing this operation throws an exception, the {@code after} operation will not be performed.
045     *
046     * @param after the operation to perform after this operation
047     * @return a composed {@code Consumer} that performs in sequence this operation followed by the {@code after}
048     *         operation
049     * @throws NullPointerException if {@code after} is null
050     */
051    default IOConsumer<T> andThen(IOConsumer<? super T> after) {
052        Objects.requireNonNull(after);
053        return (T t) -> {
054            accept(t);
055            after.accept(t);
056        };
057    }
058}