1 /*
2  * Copyright (C) 2021 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.measurement.util;
18 
19 import android.net.Uri;
20 
21 import java.util.Collection;
22 
23 /**
24  * Validations for the Measurement PPAPI module.
25  */
26 public final class Validation {
27     /**
28      * @throws IllegalArgumentException if one of the parameters is null.
29      */
validateNonNull(Object... objects)30     public static void validateNonNull(Object... objects) throws IllegalArgumentException {
31         for (Object o : objects) {
32             if (o == null) {
33                 throw new IllegalArgumentException("Received null values");
34             }
35         }
36     }
37 
38     /**
39      * @throws IllegalArgumentException if one of the parameters is an empty collection.
40      */
validateNotEmpty(Collection... collections)41     public static void validateNotEmpty(Collection... collections) throws IllegalArgumentException {
42         for (Collection c : collections) {
43             if (c.isEmpty()) {
44                 throw new IllegalArgumentException("Received an empty collection");
45             }
46         }
47     }
48 
49     /**
50      * @throws IllegalArgumentException if one of the Uri parameters is null or has no scheme.
51      */
validateUri(Uri... uris)52     public static void validateUri(Uri... uris) throws IllegalArgumentException {
53         for (Uri uri : uris) {
54             if (uri == null || uri.getScheme() == null) {
55                 throw new IllegalArgumentException("Uri with no scheme is not valid");
56             }
57         }
58     }
59 }
60