2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2019 Nordix Foundation.
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.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.models.base;
24 * Utility class for Policy Framework concept utilities.
26 * @author Liam Fallon (liam.fallon@est.tech)
28 public final class PfUtils {
30 // Cannot be subclassed
34 * Compare two objects using their equals methods, nulls are allowed.
36 * @param leftObject the first object
37 * @param rightObject the second object
38 * @return a measure of the comparison
40 public static int compareObjects(final Object leftObject, final Object rightObject) {
41 if (leftObject == null && rightObject == null) {
45 if (leftObject == null) {
49 if (rightObject == null) {
53 if (!leftObject.equals(rightObject)) {
54 return leftObject.hashCode() - rightObject.hashCode();