org.apache.flink.api.java.operators.translation

Class TupleUnwrappingJoiner<I1,I2,OUT,K>

java.lang.Object

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

org.apache.flink.api.java.operators.translation.WrappingFunction<FlatJoinFunction<I1,I2,OUT>>

org.apache.flink.api.java.operators.translation.TupleUnwrappingJoiner<I1,I2,OUT,K>

Type Parameters:

I1 - type of values in the left set

I2 - type of values in the right set

OUT - type of resulting values

K - type of key

All Implemented Interfaces:

Serializable, FlatJoinFunction<Tuple2<K,I1>,Tuple2<K,I2>,OUT>, Function, RichFunction

@Internal
public final class TupleUnwrappingJoiner<I1,I2,OUT,K>
extends WrappingFunction<FlatJoinFunction<I1,I2,OUT>>
implements FlatJoinFunction<Tuple2<K,I1>,Tuple2<K,I2>,OUT>

Joiner that unwraps both values before applying the join operation.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.flink.api.java.operators.translation.WrappingFunction

wrappedFunction

Constructor Summary

Constructors

Constructor and Description
TupleUnwrappingJoiner(FlatJoinFunction<I1,I2,OUT> wrapped)

Method Summary

Modifier and Type	Method and Description
void	join(Tuple2<K,I1> value1, Tuple2<K,I2> value2, Collector<OUT> collector) The join method, called once per joined pair of elements.

Methods inherited from class org.apache.flink.api.java.operators.translation.WrappingFunction

close, getWrappedFunction, open, setRuntimeContext

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

getIterationRuntimeContext, getRuntimeContext, open

Methods inherited from class java.lang.Object

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

Constructor Detail

TupleUnwrappingJoiner

public TupleUnwrappingJoiner(FlatJoinFunction<I1,I2,OUT> wrapped)

Method Detail

join

public void join(Tuple2<K,I1> value1,
                 Tuple2<K,I2> value2,
                 Collector<OUT> collector)
          throws Exception

Description copied from interface: FlatJoinFunction

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

Specified by:

join in interface FlatJoinFunction<Tuple2<K,I1>,Tuple2<K,I2>,OUT>

Parameters:

value1 - The element from first input.

value2 - The element from second input.

collector - 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.