org.apache.tinkerpop.gremlin.process.traversal.step.map

## Class GroupStep.GroupBiOperator<K,V>

- java.lang.Object
- - org.apache.tinkerpop.gremlin.process.traversal.step.map.GroupStep.GroupBiOperator<K,V>

- All Implemented Interfaces:
    Serializable, BiFunction<Map<K,V>,Map<K,V>,Map<K,V>>, BinaryOperator<Map<K,V>>
  Enclosing class:
    GroupStep<S,K,V>

      public static final class GroupStep.GroupBiOperator<K,V>
      extends Object
      implements BinaryOperator<Map<K,V>>, Serializable

  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `GroupBiOperator()`
    `GroupBiOperator(BinaryOperator<V> barrierAggregator)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `Map<K,V>` | `apply(Map<K,V> mapA, Map<K,V> mapB)`

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

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

    - ### Methods inherited from interface java.util.function.BinaryOperator

      `maxBy, minBy`

    - ### Methods inherited from interface java.util.function.BiFunction

      `andThen`

- - ### Constructor Detail

    - #### GroupBiOperator

          public GroupBiOperator()

    - #### GroupBiOperator

          public GroupBiOperator(BinaryOperator<V> barrierAggregator)

  - ### Method Detail

    - #### apply

          public Map<K,V> apply(Map<K,V> mapA,
                                Map<K,V> mapB)

      Specified by:
        `apply` in interface `BiFunction<Map<K,V>,Map<K,V>,Map<K,V>>`

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