1 /*
2  * Copyright (C) 2022 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.adservices.service.common;
18 
19 import androidx.annotation.Nullable;
20 
21 import java.util.Objects;
22 
23 /** Constants and utility method for data validation. */
24 public class ValidatorUtil {
25     public static final String AD_TECH_ROLE_BUYER = "buyer";
26     public static final String AD_TECH_ROLE_SELLER = "seller";
27 
28     public static final String HTTPS_SCHEME = "https";
29 
30     /** Returns true if the given string is null or empty or vise versa. */
isStringNullOrEmpty(@ullable String str)31     public static boolean isStringNullOrEmpty(@Nullable String str) {
32         return Objects.isNull(str) || str.isEmpty();
33     }
34 
ValidatorUtil()35     private ValidatorUtil() {}
36 }
37