net.codestory.http.io.SerializationUtils Maven / Gradle / Ivy

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/**
 * Copyright (C) 2013 [email protected]
 *
 * 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 net.codestory.http.io;

import java.io.*;

public class SerializationUtils {
  @SuppressWarnings("unchecked")
  public static  T clone(T object) {
    if (object == null) {
      return null;
    }

    try {
      return (T) deserialize(serialize(object));
    } catch (IOException e) {
      throw new IllegalStateException("Unable to clone", e);
    }
  }

  private static byte[] serialize(Serializable obj) throws IOException {
    ByteArrayOutputStream buffer = new ByteArrayOutputStream(512);
    try (ObjectOutputStream out = new ObjectOutputStream(buffer)) {
      out.writeObject(obj);
    }
    return buffer.toByteArray();
  }

  private static Object deserialize(byte[] objectData) throws IOException {
    ByteArrayInputStream buffer = new ByteArrayInputStream(objectData);
    try (ObjectInputStream in = new ObjectInputStream(buffer)) {
      return in.readObject();
    } catch (ClassNotFoundException e) {
      throw new IllegalStateException("Unable to deserialize", e);
    }
  }
}