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 */
017package org.apache.juneau.utils;
018
019import java.util.function.*;
020
021/**
022 * Functional interface for consumers of 4-part arguments.
023 *
024 * @param <A> Argument 1.
025 * @param <B> Argument 2.
026 * @param <C> Argument 3.
027 * @param <D> Argument 4.
028 */
029@FunctionalInterface
030public interface Consumer4<A,B,C,D> {
031
032   /**
033    * Performs this operation on the given arguments.
034    *
035    * @param a Argument 1.
036    * @param b Argument 2.
037    * @param c Argument 3.
038    * @param d Argument 4.
039    */
040   void apply(A a, B b, C c, D d);
041
042   /**
043    * Returns a composed {@link Consumer} that performs, in sequence, this operation followed by the <c>after</c> operation.
044    *
045    * @param <V> The return type.
046    * @param after The operation to perform after this operation.
047    * @return A composed {@link Consumer} that performs in sequence this operation followed by the after operation.
048    */
049   default <V> Consumer4<A,B,C,D> andThen(Consumer4<? super A,? super B,? super C, ? super D> after) {  // NOSONAR - false positive on generics
050      return (A a, B b, C c, D d) -> {
051         apply(a, b, c, d);
052         after.apply(a, b, c, d);
053      };
054   }
055}