org.kuali.coeus.common.budget.framework.query.ObjectCloner.java Source code

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Here is the source code for org.kuali.coeus.common.budget.framework.query.ObjectCloner.java

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/*
 * Kuali Coeus, a comprehensive research administration system for higher education.
 * 
 * Copyright 2005-2015 Kuali, Inc.
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program 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 Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kuali.coeus.common.budget.framework.query;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.io.*;

/**
 * The class is used to Deep Clone an Object
 * 
 * @version 1.0
 */

public class ObjectCloner {
    private static final Log LOG = LogFactory.getLog(ObjectCloner.class);

    // so that nobody can accidentally create an ObjectCloner object
    private ObjectCloner() {
    }

    // returns a deep copy of an object
    static public Object deepCopy(Object oldObj) {
        ObjectOutputStream oos = null;
        ObjectInputStream ois = null;
        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream(); // A
            oos = new ObjectOutputStream(bos); // B
            // serialize and pass the object
            oos.writeObject(oldObj); // C
            oos.flush(); // D
            ByteArrayInputStream bin = new ByteArrayInputStream(bos.toByteArray()); // E
            ois = new ObjectInputStream(bin); // F
            // return the new object
            Object object = ois.readObject();
            oos.close();
            ois.close();
            return object; // G
        } catch (Exception e) {
            return null;
        } finally {
            try {
                if (oos != null)
                    oos.close();
                if (ois != null)
                    ois.close();
            } catch (IOException e) {
                LOG.error(e.getMessage(), e);
            }
        }
    }
}