org.apache.beam.fn.harness

Interface PrecombineGroupingTable.GroupingKeyCreator<K>

All Known Implementing Classes:

PrecombineGroupingTable.WindowingCoderGroupingKeyCreator

Enclosing class:

PrecombineGroupingTable<K,InputT,AccumT>

public static interface PrecombineGroupingTable.GroupingKeyCreator<K>

Provides client-specific operations for grouping keys.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	createGroupingKey(K key)

Method Detail

createGroupingKey

java.lang.Object createGroupingKey(K key)
                            throws java.lang.Exception

Throws:

java.lang.Exception