modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopSerialization.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.ignite.internal.processors.hadoop;

import java.io.DataInput;
import java.io.DataOutput;
import org.apache.ignite.IgniteCheckedException;
import org.jetbrains.annotations.Nullable;

/**
 * Hadoop serialization. Not thread safe object, must be created for each thread or correctly synchronized.
 */
public interface HadoopSerialization extends AutoCloseable {
    /**
     * Writes the given object to output.
     *
     * @param out Output.
     * @param obj Object to serialize.
     * @throws IgniteCheckedException If failed.
     */
    public void write(DataOutput out, Object obj) throws IgniteCheckedException;

    /**
     * Reads object from the given input optionally reusing given instance.
     *
     * @param in Input.
     * @param obj Object.
     * @return New object or reused instance.
     * @throws IgniteCheckedException If failed.
     */
    public Object read(DataInput in, @Nullable Object obj) throws IgniteCheckedException;

    /**
     * Finalise the internal objects.
     *
     * @throws IgniteCheckedException If failed.
     */
    @Override public void close() throws IgniteCheckedException;
}