Package org.apache.kafka.streams.kstream
Interface ValueJoiner<V1,V2,VR>
- Type Parameters:
V1- first value typeV2- second value typeVR- joined value type
public interface ValueJoiner<V1,V2,VR>
The
ValueJoiner interface for joining two values into a new value of arbitrary type.
This is a stateless operation, i.e, apply(Object, Object) is invoked individually for each joining
record-pair of a KStream-KStream, KStream-KTable, or KTable-KTable
join.- See Also:
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KStream.join(KStream, ValueJoiner, JoinWindows)KStream.join(KStream, ValueJoiner, JoinWindows, StreamJoined)KStream.leftJoin(KStream, ValueJoiner, JoinWindows)KStream.leftJoin(KStream, ValueJoiner, JoinWindows, StreamJoined)KStream.outerJoin(KStream, ValueJoiner, JoinWindows)KStream.outerJoin(KStream, ValueJoiner, JoinWindows, StreamJoined)KStream.join(KTable, ValueJoiner)KStream.join(KTable, ValueJoiner, Joined)KStream.leftJoin(KTable, ValueJoiner)KStream.leftJoin(KTable, ValueJoiner, Joined)KTable.join(KTable, ValueJoiner)KTable.leftJoin(KTable, ValueJoiner)KTable.outerJoin(KTable, ValueJoiner)
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Method Summary
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Method Details
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apply
Return a joined value consisting ofvalue1andvalue2.- Parameters:
value1- the first value for joiningvalue2- the second value for joining- Returns:
- the joined value
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