com.qwazr.utils.SerializationUtils.java Source code

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Here is the source code for com.qwazr.utils.SerializationUtils.java

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/**
 * Copyright 2014-2016 Emmanuel Keller / QWAZR
 *
 * Licensed 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.qwazr.utils;

import java.io.*;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

public class SerializationUtils extends org.apache.commons.lang3.SerializationUtils {

    /**
     * Read an object from a file using a buffered stream and GZIP compression
     *
     * @param file the destination file
     * @param <T>  the type of the object
     * @return the deserialized object
     * @throws IOException
     */
    public static <T> T deserialize(File file) throws IOException {
        FileInputStream is = new FileInputStream(file);
        BufferedInputStream bis = new BufferedInputStream(is);
        GZIPInputStream zis = new GZIPInputStream(bis);
        try {
            return SerializationUtils.deserialize(zis);
        } finally {
            IOUtils.close(zis, bis, is);
        }
    }

    /**
     * Write an object to a file using a buffered stream and GZIP compression.
     *
     * @param obj  the object to write
     * @param file the destination file
     * @throws IOException
     */
    public static void serialize(Serializable obj, File file) throws IOException {
        FileOutputStream os = new FileOutputStream(file);
        BufferedOutputStream bos = new BufferedOutputStream(os);
        GZIPOutputStream zos = new GZIPOutputStream(bos);
        try {
            SerializationUtils.serialize(obj, zos);
        } finally {
            IOUtils.close(zos, bos, os);
        }
    }

    final public static class NullEmptyObject implements Serializable {

        public final static NullEmptyObject INSTANCE = new NullEmptyObject();
    }

}