lang/cs/Org.Apache.REEF.IMRU.Examples/MapperCount/IdentityMapFunction.cs

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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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using System.IO;
using Org.Apache.REEF.IMRU.API;
using Org.Apache.REEF.IO.PartitionedData;
using Org.Apache.REEF.Tang.Annotations;

namespace Org.Apache.REEF.IMRU.Examples.MapperCount
{
    /// <summary>
    /// A MapFunction that returns its input.
    /// </summary>
    public sealed class IdentityMapFunction : IMapFunction<int, int>
    {
        [Inject]
        private IdentityMapFunction(IInputPartition<Stream> dataPartition)
        {
        }

        /// <summary>
        /// Identity map function
        /// </summary>
        /// <param name="mapInput"></param>
        /// <returns>mapInput itself</returns>
        public int Map(int mapInput)
        {
            return mapInput;
        }
    }
}