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.server.devicepolicy;
18 
19 import android.annotation.NonNull;
20 import android.app.admin.PolicyValue;
21 import android.app.admin.StringSetPolicyValue;
22 
23 import java.util.HashSet;
24 import java.util.LinkedHashMap;
25 import java.util.Objects;
26 import java.util.Set;
27 
28 final class StringSetUnion extends ResolutionMechanism<Set<String>> {
29 
30     @Override
resolve( @onNull LinkedHashMap<EnforcingAdmin, PolicyValue<Set<String>>> adminPolicies)31     PolicyValue<Set<String>> resolve(
32             @NonNull LinkedHashMap<EnforcingAdmin, PolicyValue<Set<String>>> adminPolicies) {
33         Objects.requireNonNull(adminPolicies);
34         if (adminPolicies.isEmpty()) {
35             return null;
36         }
37         Set<String> unionOfPolicies = new HashSet<>();
38         for (PolicyValue<Set<String>> policy : adminPolicies.values()) {
39             unionOfPolicies.addAll(policy.getValue());
40         }
41         return new StringSetPolicyValue(unionOfPolicies);
42     }
43 
44     @Override
getParcelableResolutionMechanism()45     android.app.admin.StringSetUnion getParcelableResolutionMechanism() {
46         return new android.app.admin.StringSetUnion();
47     }
48 
49 
50     @Override
toString()51     public String toString() {
52         return "SetUnion {}";
53     }
54 }
55