| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.testing.shadows; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.util.Arrays; |
| |
| /** |
| * Represents a key value pair in {@link ShadowBackupDataInput} and {@link ShadowBackupDataOutput}. |
| */ |
| public class DataEntity { |
| public final String mKey; |
| public final byte[] mValue; |
| public final int mSize; |
| |
| /** |
| * Constructs a pair with a string value. The value will be converted to a byte array in {@link |
| * StandardCharsets#UTF_8}. |
| */ |
| public DataEntity(String key, String value) { |
| this.mKey = checkNotNull(key); |
| this.mValue = value.getBytes(StandardCharsets.UTF_8); |
| mSize = this.mValue.length; |
| } |
| |
| /** |
| * Constructs a new entity with the given key but a negative size. This represents a deleted |
| * pair. |
| */ |
| public DataEntity(String key) { |
| this.mKey = checkNotNull(key); |
| mSize = -1; |
| mValue = null; |
| } |
| |
| /** Constructs a new entity where the size of the value is the entire array. */ |
| public DataEntity(String key, byte[] value) { |
| this(key, value, value.length); |
| } |
| |
| /** |
| * Constructs a new entity. |
| * |
| * @param key the key of the pair |
| * @param data the value to associate with the key |
| * @param size the length of the value in bytes |
| */ |
| public DataEntity(String key, byte[] data, int size) { |
| this.mKey = checkNotNull(key); |
| this.mSize = size; |
| mValue = new byte[size]; |
| for (int i = 0; i < size; i++) { |
| mValue[i] = data[i]; |
| } |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| |
| DataEntity that = (DataEntity) o; |
| |
| if (mSize != that.mSize) { |
| return false; |
| } |
| if (!mKey.equals(that.mKey)) { |
| return false; |
| } |
| return Arrays.equals(mValue, that.mValue); |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = mKey.hashCode(); |
| result = 31 * result + Arrays.hashCode(mValue); |
| result = 31 * result + mSize; |
| return result; |
| } |
| } |