# Package org.apache.storm.streams.operations.mappers

- Interface Summary
  Interface | Description
  --- | ---
  TupleValueMapper<T> | A generic interface for mapping a `Tuple` to typed values.

- Class Summary
  Class | Description
  --- | ---
  PairValueMapper<K,​V> | Extracts a typed key-value pair from a tuple.
  TupleValueMappers | Factory for constructing typed tuples from a `Tuple` based on indicies.
  ValueMapper<T> | Extracts a single typed value from a tuple.
  ValuesMapper | Constructs a `Values` from a `Tuple` based on indicies.