Package org.apache.ignite.stream

## Interface StreamSingleTupleExtractor<T,​K,​V>

- All Known Subinterfaces:
    `StreamTupleExtractor<T,​K,​V>`

      public interface StreamSingleTupleExtractor<T,​K,​V>

  Stream tuple extractor to convert a message to a single Ignite key-value tuple.

  Alternatively, `StreamMultipleTupleExtractor` can be used in cases where a single message/event may produce more than one tuple.

  NOTE: This interface supersedes the former `StreamTupleExtractor` which is now deprecated.

  See Also:
    `StreamMultipleTupleExtractor`

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `Map.Entry<K,​V>` | `extract​(T msg)` | Extracts a key-value tuple from a message.

- - ### Method Detail

    - #### extract

          Map.Entry<K,​V> extract​(T msg)

      Extracts a key-value tuple from a message.
      Parameters:
        `msg` - Message.
      Returns:
        Key-value tuple.