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.queryable.collections;
18 
19 import com.android.queryable.queries.Query;
20 
21 import java.util.Collection;
22 import java.util.HashSet;
23 import java.util.Iterator;
24 import java.util.Set;
25 
26 /**
27  * Implementation of {@link QueryableSet}.
28  */
29 public abstract class QueryableHashSet<E, F extends Query<E>, G extends QueryableSet<E, F, ?>> implements QueryableSet<E, F, G> {
30 
31     protected Set<E> mSet = new HashSet<>();
32 
QueryableHashSet()33     public QueryableHashSet() {
34 
35     }
36 
QueryableHashSet(Set<E> existingSet)37     public QueryableHashSet(Set<E> existingSet) {
38         mSet.addAll(existingSet);
39     }
40 
41     @Override
size()42     public int size() {
43         return mSet.size();
44     }
45 
46     @Override
isEmpty()47     public boolean isEmpty() {
48         return mSet.isEmpty();
49     }
50 
51     @Override
contains(Object o)52     public boolean contains(Object o) {
53         return mSet.contains(o);
54     }
55 
56     @Override
iterator()57     public Iterator<E> iterator() {
58         return mSet.iterator();
59     }
60 
61     @Override
toArray()62     public Object[] toArray() {
63         return mSet.toArray();
64     }
65 
66     @Override
toArray(T[] a)67     public <T> T[] toArray(T[] a) {
68         return mSet.toArray(a);
69     }
70 
71     @Override
add(E e)72     public boolean add(E e) {
73         return mSet.add(e);
74     }
75 
76     @Override
remove(Object o)77     public boolean remove(Object o) {
78         return mSet.remove(o);
79     }
80 
81     @Override
containsAll(Collection<?> c)82     public boolean containsAll(Collection<?> c) {
83         return mSet.containsAll(c);
84     }
85 
86     @Override
addAll(Collection<? extends E> c)87     public boolean addAll(Collection<? extends E> c) {
88         return mSet.addAll(c);
89     }
90 
91     @Override
retainAll(Collection<?> c)92     public boolean retainAll(Collection<?> c) {
93         return mSet.retainAll(c);
94     }
95 
96     @Override
removeAll(Collection<?> c)97     public boolean removeAll(Collection<?> c) {
98         return mSet.removeAll(c);
99     }
100 
101     @Override
clear()102     public void clear() {
103         mSet.clear();
104     }
105 }
106