2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.openecomp.sdc.common.util;
23 import org.apache.commons.lang3.tuple.ImmutablePair;
24 import org.apache.commons.lang3.tuple.Pair;
26 import java.util.List;
27 import java.util.stream.Collectors;
29 public class PairUtils {
31 public static <L, R> List<L> leftSequence(List<ImmutablePair<L, R>> pairs) {
32 return pairs.stream().map(Pair::getLeft).collect(Collectors.toList());
35 public static <L, R> List<R> rightSequence(List<Pair<L, R>> pairs) {
36 return pairs.stream().map(Pair::getRight).collect(Collectors.toList());