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

Class TupleWrappingCollector<IN,K>

java.lang.Object

org.apache.flink.api.java.operators.translation.TupleWrappingCollector<IN,K>

All Implemented Interfaces:

Serializable, Collector<IN>

@Internal
public class TupleWrappingCollector<IN,K>
extends Object
implements Collector<IN>, Serializable

Needed to wrap tuples to Tuple2<key, value> pairs for combine method of group reduce with key selector function.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
TupleWrappingCollector(TupleUnwrappingIterator<IN,K> tui)

Method Summary

Modifier and Type	Method and Description
void	close() Closes the collector.
void	collect(IN record) Emits a record.
void	set(Collector<Tuple2<K,IN>> wrappedCollector)

Methods inherited from class java.lang.Object

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

Constructor Detail

TupleWrappingCollector

public TupleWrappingCollector(TupleUnwrappingIterator<IN,K> tui)

Method Detail

set

public void set(Collector<Tuple2<K,IN>> wrappedCollector)

close

public void close()

Description copied from interface: Collector

Closes the collector. If any data was buffered, that data will be flushed.

Specified by:

close in interface Collector<IN>

collect

public void collect(IN record)

Description copied from interface: Collector

Emits a record.

Specified by:

collect in interface Collector<IN>

Parameters:

record - The record to collect.