provider/tcp/src/main/java/org/apache/aries/rsa/provider/tcp/ser/BasicObjectOutputStream.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF 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 org.apache.aries.rsa.provider.tcp.ser;

import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.security.AccessController;
import java.security.PrivilegedAction;

import org.osgi.framework.Version;

public class BasicObjectOutputStream extends ObjectOutputStream {

    public BasicObjectOutputStream(OutputStream out) throws IOException {
        super(out);
        AccessController.doPrivileged(new PrivilegedAction<Void>() {
            public Void run() {
                enableReplaceObject(true);
                return null;
            }
        });
    }

    @Override
    protected Object replaceObject(Object obj) throws IOException {
        if (obj instanceof Serializable || obj.getClass().isArray()) {
            return obj;
        } else if (obj instanceof Version) {
            return new VersionMarker((Version) obj);
        } else if (DTOUtil.isDTOType(obj.getClass())){
            return new DTOMarker(obj);
        } else {
            return obj;
        }
    }
}