2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Modifications Copyright © 2018 IBM.
8 * ================================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 * ============LICENSE_END=========================================================
23 package org.onap.aai.util;
25 import java.text.DateFormat;
26 import java.text.SimpleDateFormat;
27 import java.util.Collections;
28 import java.util.Date;
29 import java.util.TimeZone;
31 public class AAIUtils {
34 * Instantiates AAIUtils.
37 // prevent instantiation
43 * @param <T> the generic type
44 * @param iterable the iterable
45 * @return the iterable
47 public static <T> Iterable<T> nullCheck(Iterable<T> iterable) {
48 return iterable == null ? Collections.<T>emptyList() : iterable;
56 public static String genDate() {
57 Date date = new Date();
58 DateFormat formatter = new SimpleDateFormat("yyMMdd-HH:mm:ss:SSS");
59 formatter.setTimeZone(TimeZone.getTimeZone("GMT"));
60 return formatter.format(date);