org.oxbow.swingbits.util.DeepCopy Maven / Gradle / Ivy

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A collection of useful components and utilities for Java Swing Toolkit
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/*
 * Copyright (c) 2009-2011, EzWare
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.Redistributions
 * in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.Neither the name of the
 * EzWare nor the names of its contributors may be used to endorse or
 * promote products derived from this software without specific prior
 * written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 */


package org.oxbow.swingbits.util;


import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

import org.oxbow.swingbits.util.copy.FastByteArrayInputStream;
import org.oxbow.swingbits.util.copy.FastByteArrayOutputStream;

/**
 * Utility for object deep copying (vs. clone()'s shallow copying)
 */
public class DeepCopy {

    /**
     * Creates deep copy of the object.
     * @param originalObject object to copy
     * @return copy of originalObject
     * @throws DeepCopyException if operation cannot be performed
     */
    public static final  T copy( T originalObject ) {
        return DeepCopy.restore( (FastByteArrayInputStream) store( originalObject ).getInputStream() );
    }

    public static final  FastByteArrayOutputStream store( T obj ) {

        try {

            FastByteArrayOutputStream fbos = new FastByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(fbos);
            out.writeObject( obj );
            out.flush();
            out.close();

            return fbos;

        } catch( Throwable ex ) {

              throw new DeepCopyException("An " + obj.getClass().getSimpleName() + " cannot be serialized. The reason: " + ex.getLocalizedMessage(), ex);
        }

    }

    @SuppressWarnings("unchecked")
    public static final  T restore( FastByteArrayInputStream  stream) {

        try {

            ObjectInputStream in = new ObjectInputStream(stream);
            return (T) in.readObject();

        } catch( Throwable ex ) {

              throw new DeepCopyException("An object cannot be deserizalized. The reason: " + ex.getLocalizedMessage(), ex);

        }

    }


}