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 17 package com.android.tv.dvr; 18 19 import java.util.concurrent.atomic.AtomicLong; 20 21 /** 22 * A class which generate the ID which increases sequentially. 23 */ 24 public 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 */ setMaxId(long maxId)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 */ newId()47 public long newId() { 48 return mMaxId.incrementAndGet(); 49 } 50 } 51