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 android.media.metrics; 18 19 import android.annotation.NonNull; 20 import android.annotation.Nullable; 21 import android.annotation.TestApi; 22 23 import java.util.Objects; 24 25 /** 26 * An instances of this class represents the ID of a log session. 27 */ 28 public final class LogSessionId { 29 @NonNull private final String mSessionId; 30 31 /** 32 * A {@link LogSessionId} object which is used to clear any existing session ID. 33 */ 34 @NonNull public static final LogSessionId LOG_SESSION_ID_NONE = new LogSessionId(""); 35 36 /** @hide */ 37 @TestApi LogSessionId(@onNull String id)38 public LogSessionId(@NonNull String id) { 39 mSessionId = Objects.requireNonNull(id); 40 } 41 42 /** Returns the ID represented by a string. */ 43 @NonNull getStringId()44 public String getStringId() { 45 return mSessionId; 46 } 47 48 @Override toString()49 public String toString() { 50 return mSessionId; 51 } 52 53 @Override equals(@ullable Object o)54 public boolean equals(@Nullable Object o) { 55 if (this == o) return true; 56 if (o == null || getClass() != o.getClass()) return false; 57 LogSessionId that = (LogSessionId) o; 58 return Objects.equals(mSessionId, that.mSessionId); 59 } 60 61 @Override hashCode()62 public int hashCode() { 63 return Objects.hash(mSessionId); 64 } 65 } 66