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.queryable.queries;
18 
19 import android.content.IntentFilter;
20 
21 import com.android.queryable.Queryable;
22 
23 import java.util.HashSet;
24 import java.util.Iterator;
25 import java.util.Set;
26 
27 /**
28  * Implementation of {@link IntentFilterQuery}.
29  *
30  * @param <E> Type of query.
31  */
32 public class IntentFilterQueryHelper<E extends Queryable> implements IntentFilterQuery<E> {
33 
34     private final E mQuery;
35     private final SetQueryHelper<E, String, StringQuery<?>> mActionsQueryHelper;
36     private final SetQueryHelper<E, String, StringQuery<?>> mCategoriesQueryHelper;
37 
IntentFilterQueryHelper()38     IntentFilterQueryHelper() {
39         mQuery = (E) this;
40         mActionsQueryHelper = new SetQueryHelper<>(mQuery);
41         mCategoriesQueryHelper = new SetQueryHelper<>(mQuery);
42     }
43 
IntentFilterQueryHelper(E query)44     public IntentFilterQueryHelper(E query) {
45         mQuery = query;
46         mActionsQueryHelper = new SetQueryHelper<>(query);
47         mCategoriesQueryHelper = new SetQueryHelper<>(query);
48     }
49 
50     @Override
actions()51     public SetQuery<E, String, StringQuery<?>> actions() {
52         return mActionsQueryHelper;
53     }
54 
55     @Override
categories()56     public SetQuery<E, String, StringQuery<?>> categories() {
57         return mCategoriesQueryHelper;
58     }
59 
60     @Override
matches(IntentFilter value)61     public boolean matches(IntentFilter value) {
62         Set<String> actions = new HashSet<>();
63         Set<String> categories = new HashSet<>();
64 
65         if (value.countActions() > 0) {
66             Iterator<String> actionsIterator = value.actionsIterator();
67 
68             while (actionsIterator.hasNext()) {
69                 actions.add(actionsIterator.next());
70             }
71         }
72         if (value.countCategories() > 0) {
73             Iterator<String> categoriesIterator = value.categoriesIterator();
74 
75             while (categoriesIterator.hasNext()) {
76                 categories.add(categoriesIterator.next());
77             }
78         }
79 
80 
81         return mActionsQueryHelper.matches(actions)
82                 && mCategoriesQueryHelper.matches(categories);
83     }
84 
85     @Override
describeQuery(String fieldName)86     public String describeQuery(String fieldName) {
87         return Queryable.joinQueryStrings(
88                 mActionsQueryHelper.describeQuery(fieldName + ".actions"),
89                 mCategoriesQueryHelper.describeQuery(fieldName + ".categories")
90         );
91     }
92 }
93