/*
* (C) Copyright 2007 Nuxeo SA (http://nuxeo.com/) and others.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Contributors:
* Nuxeo - initial API and implementation
*
* $Id: DeepCopy.java 19474 2007-05-27 10:18:21Z sfermigier $
*/
package org.nuxeo.ecm.platform.ui.web.util;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
/**
* Deep copy utils.
* <p>
* Most classes implementing the {@link Cloneable} interface only perform a shallow copy of an object. This class
* performs deep cloning serializing and deserializing an object. Therefore only serializable objects can be copied
* using this util.
*
* @author <a href="mailto:at@nuxeo.com">Anahide Tchertchian</a>
*/
// XXX AT: needs optimizing, see
// http://javatechniques.com/blog/faster-deep-copies-of-java-objects/
public final class DeepCopy {
// Utility class.
private DeepCopy() {
}
public static Object deepCopy(Object object) {
Object copy;
try {
// Write the object out to a byte array
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(bos);
out.writeObject(object);
out.flush();
out.close();
// Make an input stream from the byte array and read
// a copy of the object back in.
ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bos.toByteArray()));
copy = in.readObject();
} catch (IOException e) {
throw new RuntimeException(e);
} catch (ClassNotFoundException cnfe) {
throw new RuntimeException(cnfe);
}
return copy;
}
}