1 package org.apache.commons.jcs3.utils.serialization;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.io.ByteArrayInputStream;
23 import java.io.ByteArrayOutputStream;
24 import java.io.IOException;
25 import java.io.ObjectInputStream;
26 import java.io.ObjectOutputStream;
27
28 import org.apache.commons.jcs3.engine.behavior.IElementSerializer;
29 import org.apache.commons.jcs3.io.ObjectInputStreamClassLoaderAware;
30
31 /**
32 * Performs default serialization and de-serialization.
33 */
34 public class StandardSerializer
35 implements IElementSerializer
36 {
37 /**
38 * Serializes an object using default serialization.
39 * <p>
40 * @param obj
41 * @return byte[]
42 * @throws IOException
43 */
44 @Override
45 public <T> byte[] serialize(final T obj)
46 throws IOException
47 {
48 final ByteArrayOutputStream baos = new ByteArrayOutputStream();
49
50 try (ObjectOutputStream oos = new ObjectOutputStream(baos))
51 {
52 oos.writeUnshared(obj);
53 }
54
55 return baos.toByteArray();
56 }
57
58 /**
59 * Uses default de-serialization to turn a byte array into an object. All exceptions are
60 * converted into IOExceptions.
61 * <p>
62 * @param data data bytes
63 * @param loader class loader to use
64 * @return Object
65 * @throws IOException
66 * @throws ClassNotFoundException
67 */
68 @Override
69 public <T> T deSerialize(final byte[] data, final ClassLoader loader)
70 throws IOException, ClassNotFoundException
71 {
72 try (ByteArrayInputStream bais = new ByteArrayInputStream(data);
73 ObjectInputStream ois = new ObjectInputStreamClassLoaderAware(bais, loader))
74 {
75 @SuppressWarnings("unchecked") // Need to cast from Object
76 final
77 T readObject = (T) ois.readObject();
78 return readObject;
79 }
80 }
81 }