TriConsumer.java

/*
 * 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;

/**
 * Represents an operation that accepts three input arguments and returns no result. This is the three-arity
 * specialization of {@link Consumer}. Unlike most other functional interfaces, {@link TriConsumer} is expected to
 * operate via side effects.
 *
 * <p>
 * This is a {@link FunctionalInterface} whose functional method is {@link #accept(Object, Object, Object)}.
 * </p>
 * <p>
 * Provenance: Apache Log4j 2.7
 * </p>
 *
 * @param <T> type of the first argument
 * @param <U> type of the second argument
 * @param <V> type of the third argument
 * @since 3.13.0
 */
@FunctionalInterface
public interface TriConsumer<T, U, V> {

    /**
     * Performs the operation given the specified arguments.
     *
     * @param k the first input argument
     * @param v the second input argument
     * @param s the third input argument
     */
    void accept(T k, U v, V s);

    /**
     * Returns a composed {@link TriConsumer} that performs, in sequence, this operation followed by the {@code after}
     * operation. If performing either operation throws an exception, it is relayed to the caller of the composed
     * operation. If performing this operation throws an exception, the {@code after} operation will not be performed.
     *
     * @param after the operation to perform after this operation.
     * @return a composed {@link TriConsumer} that performs in sequence this operation followed by the {@code after}
     *         operation.
     * @throws NullPointerException if {@code after} is null.
     */
    default TriConsumer<T, U, V> andThen(final TriConsumer<? super T, ? super U, ? super V> after) {
        Objects.requireNonNull(after);

        return (t, u, v) -> {
            accept(t, u, v);
            after.accept(t, u, v);
        };
    }

}