/*
* Copyright (C) 2011 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY 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 along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.commons.serialization;
import java.io.IOException;
import java.io.Serializable;
import java.lang.reflect.UndeclaredThrowableException;
import java.util.Arrays;
import org.gatein.common.io.IOTools;
import org.gatein.common.io.UndeclaredIOException;
/**
* A simple marshalled object that retain the state of an object as a bytes.
*
* @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
*/
public class MarshalledObject<S extends Serializable> {
public static <S extends Serializable> MarshalledObject<S> marshall(S serializable) throws NullPointerException {
if (serializable == null) {
throw new NullPointerException("Cannot marshall null");
}
try {
byte[] bytes = IOTools.serialize(serializable);
return new MarshalledObject<S>(serializable.getClass().getClassLoader(), bytes);
} catch (IOException e) {
throw new UndeclaredIOException(e);
}
}
/** . */
private final ClassLoader loader;
/** . */
private final byte[] state;
private MarshalledObject(ClassLoader loader, byte[] state) {
this.loader = loader;
this.state = state;
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (obj instanceof MarshalledObject) {
MarshalledObject<?> that = (MarshalledObject<?>) obj;
return Arrays.equals(state, that.state);
}
return false;
}
@Override
public int hashCode() {
return Arrays.hashCode(state);
}
public S unmarshall() throws UndeclaredThrowableException {
try {
return (S) IOTools.unserialize(state, loader);
} catch (IOException e) {
throw new UndeclaredIOException(e);
} catch (ClassNotFoundException e) {
throw new UndeclaredThrowableException(e);
}
}
}