| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| KryoSimpleWrapper |
|
| 1.3333333333333333;1.333 |
| 1 | /* | |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one | |
| 3 | * or more contributor license agreements. See the NOTICE file | |
| 4 | * distributed with this work for additional information | |
| 5 | * regarding copyright ownership. The ASF licenses this file | |
| 6 | * to you under the Apache License, Version 2.0 (the | |
| 7 | * "License"); you may not use this file except in compliance | |
| 8 | * with the License. You may obtain a copy of the License at | |
| 9 | * | |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 11 | * | |
| 12 | * Unless required by applicable law or agreed to in writing, software | |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 15 | * See the License for the specific language governing permissions and | |
| 16 | * limitations under the License. | |
| 17 | */ | |
| 18 | package org.apache.giraph.writable.kryo; | |
| 19 | ||
| 20 | import java.io.DataInput; | |
| 21 | import java.io.DataOutput; | |
| 22 | import java.io.IOException; | |
| 23 | ||
| 24 | import com.esotericsoftware.kryo.io.Input; | |
| 25 | import com.esotericsoftware.kryo.io.Output; | |
| 26 | import org.apache.hadoop.io.Writable; | |
| 27 | ||
| 28 | /** | |
| 29 | * Generic wrapper object, making any object writable. | |
| 30 | * | |
| 31 | * Usage of this class is similar to KryoWritableWrapper but | |
| 32 | * unlike KryoWritableWrapper, this class does not | |
| 33 | * support recursive/nested objects to provide better | |
| 34 | * performance. | |
| 35 | * | |
| 36 | * If the underlying stream is a kryo output stream than the read/write | |
| 37 | * happens with a kryo object that doesn't track references, providing | |
| 38 | * significantly better performance. | |
| 39 | * | |
| 40 | * @param <T> Object type | |
| 41 | */ | |
| 42 | public class KryoSimpleWrapper<T> implements Writable, Boxed<T> { | |
| 43 | ||
| 44 | /** Wrapped object */ | |
| 45 | private T object; | |
| 46 | ||
| 47 | /** | |
| 48 | * Create wrapper given an object. | |
| 49 | * @param object Object instance | |
| 50 | */ | |
| 51 | 0 | public KryoSimpleWrapper(T object) { |
| 52 | 0 | this.object = object; |
| 53 | 0 | } |
| 54 | ||
| 55 | /** | |
| 56 | * Creates wrapper initialized with null. | |
| 57 | */ | |
| 58 | 0 | public KryoSimpleWrapper() { |
| 59 | 0 | } |
| 60 | ||
| 61 | /** | |
| 62 | * Unwrap the object value | |
| 63 | * @return Object value | |
| 64 | */ | |
| 65 | public T get() { | |
| 66 | 0 | return object; |
| 67 | } | |
| 68 | ||
| 69 | /** | |
| 70 | * Set wrapped object value | |
| 71 | * @param object New object value | |
| 72 | */ | |
| 73 | public void set(T object) { | |
| 74 | 0 | this.object = object; |
| 75 | 0 | } |
| 76 | ||
| 77 | @Override | |
| 78 | public void readFields(DataInput in) throws java.io.IOException { | |
| 79 | 0 | if (in instanceof Input) { |
| 80 | 0 | Input inp = (Input) in; |
| 81 | 0 | object = HadoopKryo.readWithKryo(HadoopKryo.getNontrackingKryo(), inp); |
| 82 | 0 | } else { |
| 83 | 0 | object = HadoopKryo.readClassAndObj(in); |
| 84 | } | |
| 85 | 0 | } |
| 86 | ||
| 87 | @Override | |
| 88 | public void write(DataOutput out) throws IOException { | |
| 89 | 0 | if (out instanceof Output) { |
| 90 | 0 | Output outp = (Output) out; |
| 91 | 0 | HadoopKryo.writeWithKryo(HadoopKryo.getNontrackingKryo(), outp, object); |
| 92 | 0 | } else { |
| 93 | 0 | HadoopKryo.writeClassAndObj(out, object); |
| 94 | } | |
| 95 | 0 | } |
| 96 | } |