Java example source code file (SerializationUtils.java)

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Java - Java tags/keywords

bytearrayoutputstream, exception, objectinputstream, objectoutputstream, runtimeexception, serializationutils, suppresswarnings

The SerializationUtils.java Java example source code

/*
 *
 *  * Copyright 2015 Skymind,Inc.
 *  *
 *  *    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 org.deeplearning4j.util;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
import org.apache.commons.io.FileUtils;

/**
 * Serialization utils for saving and reading serializable objects
 *
 * @author Adam Gibson
 */
public class SerializationUtils {

	@SuppressWarnings("unchecked")
	public static <T> T readObject(File file) {
		try {
			ObjectInputStream ois = new ObjectInputStream(FileUtils.openInputStream(file));
			return (T) ois.readObject();
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
		
	}
	
	/**
	 * Reads an object from the given input stream
	 * @param is the input stream to read from
	 * @return the read object
	 */
	@SuppressWarnings("unchecked")
	public static <T> T readObject(InputStream is) {
		try {
			ObjectInputStream ois = new ObjectInputStream(is);
			return (T) ois.readObject();
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
		
	}



    /**
     * Converts the given object to a byte array
     * @param toSave the object to save
     */
    public static byte[] toByteArray(Serializable toSave) {
        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            ObjectOutputStream os = new ObjectOutputStream(bos);
            os.writeObject(toSave);
            byte[] ret = bos.toByteArray();
            os.close();
            return ret;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

    }


	/**
	 * Writes the object to the output stream
	 * THIS DOES NOT FLUSH THE STREAMMultiLayerNetwork
	 * @param toSave the object to save
	 * @param writeTo the output stream to write to
	 */
	public static void writeObject(Serializable toSave,OutputStream writeTo) {
		try {
			ObjectOutputStream os = new ObjectOutputStream(writeTo);
			os.writeObject(toSave);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
		
	}
	
	public static void saveObject(Object toSave,File saveTo) {
		try {
			OutputStream os1 = FileUtils.openOutputStream(saveTo);
			ObjectOutputStream os = new ObjectOutputStream(os1);
			os.writeObject(toSave);
			os.flush();
            os.close();
            os1.close();
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
		
	}
}