[1632] | 1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany
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| 2 | //
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| 3 | // Licensed under the Apache License, Version 2.0 (the "License");
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| 4 | // you may not use this file except in compliance with the License.
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| 5 | // You may obtain a copy of the License at
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| 6 | //
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| 7 | // http://www.apache.org/licenses/LICENSE-2.0
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| 8 | //
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| 9 | // Unless required by applicable law or agreed to in writing, software
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| 10 | // distributed under the License is distributed on an "AS IS" BASIS,
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| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 12 | // See the License for the specific language governing permissions and
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| 13 | // limitations under the License.
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| 14 |
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| 15 | package de.ugoe.cs.util;
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| 16 |
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| 17 | import java.io.ByteArrayInputStream;
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| 18 | import java.io.IOException;
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| 19 | import java.io.InputStream;
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| 20 | import java.io.ObjectInputStream;
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| 21 | import java.io.ObjectStreamClass;
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| 22 | import java.io.OutputStream;
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| 23 | import java.io.Serializable;
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| 24 |
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| 25 | import org.apache.commons.lang.SerializationException;
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| 26 |
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| 27 | /**
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| 28 | * <p>
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| 29 | * This class is basically a partial copy of the the
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| 30 | * {@link org.apache.commons.lang.SerializationUtils}. The difference is that we use the class
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| 31 | * loader of the current context for the ObjectInputStream for deserialization. This allows the
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| 32 | * usage of this method in multi-classloader environments, such as application servers.
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| 33 | * </p>
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| 34 | *
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| 35 | * @author Steffen Herbold
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| 36 | */
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| 37 | public class SerializationUtils {
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| 38 |
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| 39 | /**
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| 40 | * @see org.apache.commons.lang.SerializationUtils#serialize(Serializable, OutputStream)
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| 41 | */
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| 42 | public static void serialize(final Serializable obj, final OutputStream outputStream) {
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| 43 | org.apache.commons.lang.SerializationUtils.serialize(obj, outputStream);
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| 44 | }
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| 45 |
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| 46 | /**
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| 47 | * @see org.apache.commons.lang.SerializationUtils#serialize(Serializable)
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| 48 | */
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| 49 | public static byte[] serialize(final Serializable obj) {
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| 50 | return org.apache.commons.lang.SerializationUtils.serialize(obj);
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| 51 | }
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| 52 |
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| 53 | /**
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| 54 | * @see org.apache.commons.lang.SerializationUtils#deserialize(InputStream)
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| 55 | */
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| 56 | public static <T> T deserialize(final InputStream inputStream) {
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| 57 | if (inputStream == null) {
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| 58 | throw new IllegalArgumentException("The InputStream must not be null");
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| 59 | }
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| 60 | ObjectInputStream in = null;
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| 61 | try {
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| 62 | // stream closed in the finally
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| 63 | in = new ObjectInputStream(inputStream) {
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| 64 | /*
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| 65 | * (non-Javadoc)
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| 66 | *
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| 67 | * @see java.io.ObjectInputStream#resolveClass(java.io.ObjectStreamClass)
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| 68 | */
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| 69 | @Override
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| 70 | protected Class<?> resolveClass(ObjectStreamClass desc) throws IOException,
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| 71 | ClassNotFoundException
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| 72 | {
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| 73 | Class<?> clazz =
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| 74 | Class.forName(desc.getName(), false, Thread.currentThread()
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| 75 | .getContextClassLoader());
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| 76 |
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| 77 | if (clazz != null) {
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| 78 | return clazz;
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| 79 | }
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| 80 | return super.resolveClass(desc);
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| 81 | }
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| 82 | };
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| 83 | @SuppressWarnings("unchecked")
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| 84 | // may fail with CCE if serialised form is incorrect
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| 85 | final T obj = (T) in.readObject();
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| 86 | return obj;
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| 87 |
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| 88 | }
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| 89 | catch (final ClassCastException ex) {
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| 90 | throw new SerializationException(ex);
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| 91 | }
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| 92 | catch (final ClassNotFoundException ex) {
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| 93 | throw new SerializationException(ex);
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| 94 | }
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| 95 | catch (final IOException ex) {
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| 96 | throw new SerializationException(ex);
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| 97 | }
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| 98 | finally {
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| 99 | try {
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| 100 | if (in != null) {
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| 101 | in.close();
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| 102 | }
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| 103 | }
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| 104 | catch (final IOException ex) { // NOPMD
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| 105 | // ignore close exception
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| 106 | }
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| 107 | }
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| 108 | }
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| 109 |
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| 110 | /**
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| 111 | * @see org.apache.commons.lang.SerializationUtils#deserialize(byte[])
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| 112 | */
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| 113 | public static <T> T deserialize(final byte[] objectData) {
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| 114 | if (objectData == null) {
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| 115 | throw new IllegalArgumentException("The byte[] must not be null");
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| 116 | }
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| 117 | return SerializationUtils.<T> deserialize(new ByteArrayInputStream(objectData));
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| 118 | }
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| 119 |
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| 120 | }
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