org.apache.flink.runtime.operators.shipping

Class OutputCollector<T>

java.lang.Object

org.apache.flink.runtime.operators.shipping.OutputCollector<T>

All Implemented Interfaces:

Collector<T>

public class OutputCollector<T>
extends Object
implements Collector<T>

The OutputCollector collects records, and emits the pair to a set of Nephele RecordWriters. The OutputCollector tracks to which writers a deep-copy must be given and which not.

Field Summary

Fields

Modifier and Type	Field and Description
protected RecordWriter<SerializationDelegate<T>>[]	writers

Constructor Summary

Constructors

Constructor and Description
OutputCollector(List<RecordWriter<SerializationDelegate<T>>> writers, TypeSerializer<T> serializer) Initializes the output collector with a set of writers.

Method Summary

Methods

Modifier and Type	Method and Description
void	addWriter(RecordWriter<SerializationDelegate<T>> writer) Adds a writer to the OutputCollector.
void	close()
void	collect(T record) Collects a record and emits it to all writers.
List<RecordWriter<SerializationDelegate<T>>>	getWriters() List of writers that are associated with this output collector

Methods inherited from class java.lang.Object

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

Field Detail

writers

protected RecordWriter<SerializationDelegate<T>>[] writers

Constructor Detail

OutputCollector

public OutputCollector(List<RecordWriter<SerializationDelegate<T>>> writers,
               TypeSerializer<T> serializer)

Initializes the output collector with a set of writers. To specify for a writer that it must be fed with a deep-copy, set the bit in the copy flag bit mask to 1 that corresponds to the position of the writer within the List.

Parameters:

writers - List of all writers.

Method Detail

addWriter

public void addWriter(RecordWriter<SerializationDelegate<T>> writer)

Adds a writer to the OutputCollector.

Parameters:

writer - The writer to add.

collect

public void collect(T record)

Collects a record and emits it to all writers.

Specified by:

collect in interface Collector<T>

close

public void close()

Specified by:

close in interface Collector<T>

getWriters

public List<RecordWriter<SerializationDelegate<T>>> getWriters()

List of writers that are associated with this output collector

Returns:

list of writers