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.PackageSetPolicyValue;
22 import android.app.admin.StringSetUnion;
23 
24 import java.util.HashSet;
25 import java.util.LinkedHashMap;
26 import java.util.Objects;
27 import java.util.Set;
28 
29 final class PackageSetUnion extends ResolutionMechanism<Set<String>> {
30 
31     @Override
resolve( @onNull LinkedHashMap<EnforcingAdmin, PolicyValue<Set<String>>> adminPolicies)32     PolicyValue<Set<String>> resolve(
33             @NonNull LinkedHashMap<EnforcingAdmin, PolicyValue<Set<String>>> adminPolicies) {
34         Objects.requireNonNull(adminPolicies);
35         if (adminPolicies.isEmpty()) {
36             return null;
37         }
38         Set<String> unionOfPolicies = new HashSet<>();
39         for (PolicyValue<Set<String>> policy : adminPolicies.values()) {
40             unionOfPolicies.addAll(policy.getValue());
41         }
42         return new PackageSetPolicyValue(unionOfPolicies);
43     }
44 
45     @Override
getParcelableResolutionMechanism()46     StringSetUnion getParcelableResolutionMechanism() {
47         return new StringSetUnion();
48     }
49 
50 
51     @Override
toString()52     public String toString() {
53         return "PackageSetUnion {}";
54     }
55 }
56