2 * ================================================================================
3 * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 * ============LICENSE_END=========================================================
20 package org.onap.dcae.analytics.model.util.function;
22 import java.util.function.BiFunction;
23 import java.util.function.Function;
26 * A BiFunction extension which extends {@link BiFunction} to support additional functional
27 * concepts like currying
29 * @param <T> the type of the first argument to the function
30 * @param <U> the type of the second argument to the function
31 * @param <R> the type of the result of the function
33 public interface BiFunctionExtension<T, U, R> extends BiFunction<T, U, R> {
36 * Returns a {@link Function} which takes one argument
38 * @param t Bi Function first param
40 * @return Function which takes another argument
42 default Function<U, R> curry(T t) {
43 return (U u) -> apply(t, u);