org.apache.flink.api.common.functions

Class RichFlatJoinFunction<IN1,IN2,OUT>

java.lang.Object

org.apache.flink.api.common.functions.AbstractRichFunction

org.apache.flink.api.common.functions.RichFlatJoinFunction<IN1,IN2,OUT>

Type Parameters:

IN1 - The type of the elements in the first input.

IN2 - The type of the elements in the second input.

OUT - The type of the result elements.

All Implemented Interfaces:

Serializable, FlatJoinFunction<IN1,IN2,OUT>, Function, RichFunction

@Public
public abstract class RichFlatJoinFunction<IN1,IN2,OUT>
extends AbstractRichFunction
implements FlatJoinFunction<IN1,IN2,OUT>

Rich variant of the FlatJoinFunction. As a RichFunction, it gives access to the RuntimeContext and provides setup and teardown methods: RichFunction.open(org.apache.flink.configuration.Configuration) and RichFunction.close().

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RichFlatJoinFunction()

Method Summary

Modifier and Type	Method and Description
abstract void	join(IN1 first, IN2 second, Collector<OUT> out) The join method, called once per joined pair of elements.

Methods inherited from class org.apache.flink.api.common.functions.AbstractRichFunction

close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

Methods inherited from class java.lang.Object

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

Constructor Detail

RichFlatJoinFunction

public RichFlatJoinFunction()

Method Detail

join

public abstract void join(IN1 first,
                          IN2 second,
                          Collector<OUT> out)
                   throws Exception

Description copied from interface: FlatJoinFunction

The join method, called once per joined pair of elements.

Specified by:

join in interface FlatJoinFunction<IN1,IN2,OUT>

Parameters:

first - The element from first input.

second - The element from second input.

out - The collector used to return zero, one, or more elements.

Throws:

Exception - This method may throw exceptions. Throwing an exception will cause the operation to fail and may trigger recovery.