pulsar-functions/java-examples/src/main/java/org/apache/pulsar/functions/api/examples/CustomDerivedSerde.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.pulsar.functions.api.examples;

import org.apache.pulsar.functions.api.SerDe;

import java.nio.ByteBuffer;

/**
 *  Example to derived object serialization.
 */
public class CustomDerivedSerde implements SerDe<CustomDerivedObject> {
    @Override
    public CustomDerivedObject deserialize(byte[] bytes) {
        ByteBuffer buffer =  ByteBuffer.wrap(bytes);
        return new CustomDerivedObject(buffer.getLong(), buffer.getInt());
    }

    @Override
    public byte[] serialize(CustomDerivedObject object) {
        ByteBuffer buffer = ByteBuffer.allocate(12);
        buffer.putLong(object.getBaseValue());
        buffer.putInt(object.getDerivedValue());
        return buffer.array();
    }
}