flink-core/src/main/java/org/apache/flink/api/java/typeutils/runtime/JavaEitherSerializerSnapshot.java

/*
 * 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
 * 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.apache.flink.api.java.typeutils.runtime;

import org.apache.flink.api.common.typeutils.CompositeTypeSerializerSnapshot;
import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.types.Either;

/**
 * Snapshot class for the {@link EitherSerializer}.
 */
public class JavaEitherSerializerSnapshot<L, R> extends CompositeTypeSerializerSnapshot<Either<L, R>, EitherSerializer> {

	private static final int CURRENT_VERSION = 1;

	/**
	 * Constructor for read instantiation.
	 */
	@SuppressWarnings("unused")
	public JavaEitherSerializerSnapshot() {
		super(EitherSerializer.class);
	}

	/**
	 * Constructor to create the snapshot for writing.
	 */
	public JavaEitherSerializerSnapshot(EitherSerializer<L, R> eitherSerializer) {
		super(eitherSerializer);
	}

	@Override
	protected int getCurrentOuterSnapshotVersion() {
		return CURRENT_VERSION;
	}

	@Override
	protected EitherSerializer createOuterSerializerWithNestedSerializers(TypeSerializer<?>[] nestedSerializers) {
		return new EitherSerializer<>(nestedSerializers[0], nestedSerializers[1]);
	}

	@Override
	protected TypeSerializer<?>[] getNestedSerializers(EitherSerializer outerSerializer) {
		return new TypeSerializer<?>[]{ outerSerializer.getLeftSerializer(), outerSerializer.getRightSerializer() };
	}
}