/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* JBoss, Home of Professional Open Source
* Copyright 2011 Red Hat Inc. and/or its affiliates and other contributors
* as indicated by the @authors tag. All rights reserved.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
package org.hibernate.search.indexes.serialization.impl;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamClass;
import java.io.Serializable;
import org.hibernate.search.util.logging.impl.Log;
import org.hibernate.search.util.logging.impl.LoggerFactory;
/**
* @author Emmanuel Bernard <emmanuel@hibernate.org>
*/
public class SerializationHelper {
private static Log log = LoggerFactory.make();
public static byte[] toByteArray(Serializable instance) {
//no need to close ByteArrayOutputStream
ByteArrayOutputStream out = new ByteArrayOutputStream();
try {
ObjectOutputStream stream = new ObjectOutputStream(out);
stream.writeObject( instance );
stream.close();
}
catch ( IOException e ) {
throw log.failToSerializeObject(instance.getClass(), e);
}
return out.toByteArray();
}
public static <T> T toInstance(byte[] data, Class<T> clazz) {
try {
ByteArrayInputStream byteIn = new ByteArrayInputStream( data );
ObjectInputStream in = new ClassLoaderAwareObjectInputStream( byteIn, clazz.getClassLoader() );
return (T) in.readObject();
}
catch ( IOException e ) {
throw log.failToDeserializeObject(e);
}
catch ( ClassNotFoundException e ) {
throw log.failToDeserializeObject(e);
}
}
public static Serializable toSerializable(byte[] data, ClassLoader loader) {
try {
ByteArrayInputStream byteIn = new ByteArrayInputStream( data );
ObjectInputStream in = new ClassLoaderAwareObjectInputStream( byteIn, loader );
return (Serializable) in.readObject();
}
catch ( IOException e ) {
throw log.failToDeserializeObject(e);
}
catch ( ClassNotFoundException e ) {
throw log.failToDeserializeObject(e);
}
}
private static class ClassLoaderAwareObjectInputStream extends ObjectInputStream {
private ClassLoader classLoader;
public ClassLoaderAwareObjectInputStream(InputStream in, ClassLoader classLoader) throws IOException {
super( in );
this.classLoader = classLoader;
}
@Override
protected Class<?> resolveClass(ObjectStreamClass desc) throws IOException, ClassNotFoundException {
try {
Class<?> clazz = Class.forName( desc.getName(), false, classLoader );
return clazz;
}
catch ( ClassNotFoundException ex ) {
return super.resolveClass( desc );
}
}
}
}