/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.common;
/**
* Represents a function that accepts three arguments and produces a result.
*
* @param <S> the type of the first argument
* @param <T> the type of the second argument
* @param <U> the type of the third argument
* @param <R> the return type
*/
@FunctionalInterface
public interface TriFunction<S, T, U, R> {
/**
* Applies this function to the given arguments.
*
* @param s the first function argument
* @param t the second function argument
* @param u the third function argument
* @return the result
*/
R apply(S s, T t, U u);
}