com.swiftmq.tools.util.ObjectCloner Maven / Gradle / Ivy

Go to download
/*
 * Copyright 2019 IIT Software GmbH
 *
 * IIT Software GmbH licenses this file to You 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.
 *
 */

package com.swiftmq.tools.util;

import com.swiftmq.tools.dump.Dumpable;
import com.swiftmq.tools.dump.DumpableFactory;
import com.swiftmq.tools.dump.Dumpalizer;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class ObjectCloner {

    public static Dumpable copy(Dumpable old, DumpableFactory factory) throws Exception {
        DataByteArrayOutputStream dos = new DataByteArrayOutputStream();
        Dumpalizer.dump(dos, old);
        DataByteArrayInputStream dis = new DataByteArrayInputStream();
        dis.setBuffer(dos.getBuffer(), 0, dos.getCount());
        return Dumpalizer.construct(dis, factory);
    }

    public static Object deepCopy(Object oldObj) throws Exception {
        ObjectOutputStream oos = null;
        ObjectInputStream ois = null;
        Object obj = null;

        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            oos = new ObjectOutputStream(bos);
            oos.writeObject(oldObj);
            oos.flush();

            ByteArrayInputStream bin = new ByteArrayInputStream(bos.toByteArray());
            ois = new ObjectInputStream(bin);
            obj = ois.readObject();
        } finally {
            try {
                oos.close();
                ois.close();
            } catch (Exception ignored) {
            }
        }
        return obj;
    }
}