/*
* 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
*
* 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.streams.util;
import org.apache.commons.io.input.ClassLoaderObjectInputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
/**
* SerializationUtil contains methods for serializing, deserializing, and cloning
* documents and tasks.
*/
public class SerializationUtil {
/**
* serialize Object as byte array.
*
* <p/>
* BORROwED FROM APACHE STORM PROJECT
*
* @param obj Object
* @return byte[]
*/
public static byte[] serialize(Object obj) {
try {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bos);
oos.writeObject(obj);
oos.close();
return bos.toByteArray();
} catch (IOException ioe) {
throw new RuntimeException(ioe);
}
}
/**
* deserialize byte array as Object.
*
* <p/>
* BORROwED FROM APACHE STORM PROJECT
*
* @param serialized byte[]
* @return Object
*/
public static Object deserialize(byte[] serialized) {
try {
ByteArrayInputStream bis = new ByteArrayInputStream(serialized);
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
ObjectInputStream ois = new ClassLoaderObjectInputStream(classLoader, bis);
Object ret = ois.readObject();
ois.close();
return ret;
} catch (IOException | ClassNotFoundException ioe) {
throw new RuntimeException(ioe);
}
}
/**
* clone Object by serialization.
* @param obj Object
* @param <T> type
* @return cloned Object
*/
public static <T> T cloneBySerialization(T obj) {
if ( obj != null ) {
return (T) deserialize(serialize(obj));
} else {
return null;
}
}
}