org.simplejavamail.internal.clisupport.serialization.SerializationUtil Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of cli-module Show documentation

Simple API, Complex Emails. Now with CLI support

There is a newer version: 8.12.4

/*
 * Copyright © 2009 Benny Bottema ([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 org.simplejavamail.internal.clisupport.serialization;

import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import com.esotericsoftware.kryo.util.DefaultInstantiatorStrategy;
import de.javakaffee.kryoserializers.UnmodifiableCollectionsSerializer;
import org.jetbrains.annotations.NotNull;
import org.objenesis.strategy.StdInstantiatorStrategy;

/**
 * Used to serialize attachments of nested Outlook messages. This is needed because outlook-message-parser returns a Java structure from a .msg source, but this conversion is 1-way. An Email object
 * represents attachments as DataSources however, so for this we need to serialize back from the java structure to a binary format. This Util does this.
 * 

 * Then for users to obtain the Javastructure again, they must use this util to deserialize the relevant attachment.
 *
 * @see GitHub issue #314
 */
public class SerializationUtil {

	private static final Kryo KRYO = initKryo();

	@NotNull
	private static Kryo initKryo() {
		Kryo kryo = new Kryo();
		kryo.setRegistrationRequired(false);
		kryo.setInstantiatorStrategy(new DefaultInstantiatorStrategy(new StdInstantiatorStrategy()));
		UnmodifiableCollectionsSerializer.registerSerializers(kryo);
		return kryo;
	}

	@NotNull
	public static byte[] serialize(@NotNull final Object serializable) {
		final Output output = new Output(1024, -1);
		KRYO.writeClassAndObject(output, serializable);
		return output.toBytes();
	}

	@SuppressWarnings("unchecked")
	@NotNull
	public static  T deserialize(final byte@NotNull[] serialized) {
		return (T) KRYO.readClassAndObject(new Input(serialized));
	}
}