/*
 * 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.cassandra.journal;

import java.io.IOException;

import org.apache.cassandra.io.util.DataInputPlus;
import org.apache.cassandra.io.util.DataOutputPlus;

public interface ValueSerializer<K, V>
{
    void serialize(K key, V value, DataOutputPlus out, int userVersion) throws IOException;

    /**
     * Deserialize the value given the key is known. Allows to avoid serializing
     * redundant information in values, if it can be derived from keys.
     */
    V deserialize(K key, DataInputPlus in, int userVersion) throws IOException;

    class Unsupported<K, V> implements ValueSerializer<K, V>
    {
        @Override
        public void serialize(K key, V value, DataOutputPlus out, int userVersion)
        {
            throw new UnsupportedOperationException();
        }

        @Override
        public V deserialize(K key, DataInputPlus in, int userVersion)
        {
            throw new UnsupportedOperationException();
        }
    }
}
