org.apache.storm.kafka.trident.mapper

## Class FieldNameBasedTupleToKafkaMapper<K,V>

- java.lang.Object
- - org.apache.storm.kafka.trident.mapper.FieldNameBasedTupleToKafkaMapper<K,V>

- All Implemented Interfaces:
    Serializable, TridentTupleToKafkaMapper

      public class FieldNameBasedTupleToKafkaMapper<K,V>
      extends Object
      implements TridentTupleToKafkaMapper

  See Also:
    Serialized Form

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `String` | `keyFieldName`
    `String` | `msgFieldName`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `FieldNameBasedTupleToKafkaMapper(String keyFieldName, String msgFieldName)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `K` | `getKeyFromTuple(TridentTuple tuple)`
    `V` | `getMessageFromTuple(TridentTuple tuple)`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### keyFieldName

          public final String keyFieldName

    - #### msgFieldName

          public final String msgFieldName

  - ### Constructor Detail

    - #### FieldNameBasedTupleToKafkaMapper

          public FieldNameBasedTupleToKafkaMapper(String keyFieldName,
                                                  String msgFieldName)

  - ### Method Detail

    - #### getKeyFromTuple

          public K getKeyFromTuple(TridentTuple tuple)

      Specified by:
        `getKeyFromTuple` in interface `TridentTupleToKafkaMapper`

    - #### getMessageFromTuple

          public V getMessageFromTuple(TridentTuple tuple)

      Specified by:
        `getMessageFromTuple` in interface `TridentTupleToKafkaMapper`

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