1/*
2 * Copyright (C) 2016 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
17package com.android.tv.dvr.data;
18
19import java.util.concurrent.atomic.AtomicLong;
20
21/**
22 * A class which generate the ID which increases sequentially.
23 */
24public class IdGenerator {
25    /**
26     * ID generator for the scheduled recording.
27     */
28    public static final IdGenerator SCHEDULED_RECORDING = new IdGenerator();
29
30    /**
31     * ID generator for the series recording.
32     */
33    public static final IdGenerator SERIES_RECORDING = new IdGenerator();
34
35    private final AtomicLong mMaxId = new AtomicLong(0);
36
37    /**
38     * Sets the new maximum ID.
39     */
40    public void setMaxId(long maxId) {
41        mMaxId.set(maxId);
42    }
43
44    /**
45     * Returns the new ID which is greater than the existing maximum ID by 1.
46     */
47    public long newId() {
48        return mMaxId.incrementAndGet();
49    }
50}
51