Package org.apache.flink.datastream.api.extension.join

Interface JoinFunction<IN1,IN2,OUT>

Type Parameters:

IN1 - the type of the first input record

IN2 - the type of the second input record

OUT - the type of the output record

All Superinterfaces:

org.apache.flink.api.common.functions.Function, Serializable

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
@Experimental
public interface JoinFunction<IN1,IN2,OUT>
extends org.apache.flink.api.common.functions.Function

A functional interface that defines a join operation between two input records of types IN1 and IN2. Note that this is specifically used in non-broadcast joins.

This interface is used to process a pair of records from two different data streams and produce an output record of type OUT. Implementations of this interface can be used to define custom join logic in stream processing frameworks.

Method Summary

Modifier and Type	Method	Description
void	processRecord(IN1 leftRecord, IN2 rightRecord, Collector<OUT> output, RuntimeContext ctx)

Method Details

processRecord

void processRecord(IN1 leftRecord,
 IN2 rightRecord,
 Collector<OUT> output,
 RuntimeContext ctx)
            throws Exception

Throws:

Exception