org.apache.commons.jcs.utils.serialization.StandardSerializer.java Source code

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Here is the source code for org.apache.commons.jcs.utils.serialization.StandardSerializer.java

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package org.apache.commons.jcs.utils.serialization;

/*
 * 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.
 */

import org.apache.commons.jcs.engine.behavior.IElementSerializer;
import org.apache.commons.jcs.io.ObjectInputStreamClassLoaderAware;

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

/**
 * Performs default serialization and de-serialization.
 * <p>
 * @author Aaron Smuts
 */
public class StandardSerializer implements IElementSerializer {
    /**
     * Serializes an object using default serialization.
     * <p>
     * @param obj
     * @return byte[]
     * @throws IOException
     */
    @Override
    public <T> byte[] serialize(T obj) throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        try (ObjectOutputStream oos = new ObjectOutputStream(baos)) {
            oos.writeObject(obj);
        }

        return baos.toByteArray();
    }

    /**
     * Uses default de-serialization to turn a byte array into an object. All exceptions are
     * converted into IOExceptions.
     * <p>
     * @param data
     * @return Object
     * @throws IOException
     * @throws ClassNotFoundException
     */
    @Override
    public <T> T deSerialize(byte[] data, ClassLoader loader) throws IOException, ClassNotFoundException {
        ByteArrayInputStream bais = new ByteArrayInputStream(data);

        try (ObjectInputStream ois = new ObjectInputStreamClassLoaderAware(bais, loader)) {
            @SuppressWarnings("unchecked") // Need to cast from Object
            T readObject = (T) ois.readObject();
            return readObject;
        }
    }
}