org.apache.storm.streams.processors

Class EmittingProcessorContext

java.lang.Object

org.apache.storm.streams.processors.EmittingProcessorContext

All Implemented Interfaces:

Serializable, ProcessorContext

public class EmittingProcessorContext
extends Object
implements ProcessorContext

A context that emits the results to downstream processors which are in another bolt.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
EmittingProcessorContext(ProcessorNode processorNode, OutputCollector collector, String outputStreamId)

Method Summary

Modifier and Type	Method and Description
<T> void	forward(T input) Forwards the input to all downstream processors.
<T> void	forward(T input, String stream) Forwards the input to downstream processors at specified stream.
Set<String>	getWindowedParentStreams() Returns the windowed parent streams.
boolean	isWindowed() Returns true if the processing is in a windowed context and should wait for punctuation before emitting results.
void	setAnchor(RefCountedTuple anchor)
void	setEventTimestamp(long timestamp)
void	setTimestampField(String fieldName)

Methods inherited from class java.lang.Object

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

Constructor Detail

EmittingProcessorContext

public EmittingProcessorContext(ProcessorNode processorNode,
                                OutputCollector collector,
                                String outputStreamId)

Method Detail

forward

public <T> void forward(T input)

Description copied from interface: ProcessorContext

Forwards the input to all downstream processors.

Specified by:

forward in interface ProcessorContext

Parameters:

input - the input

forward

public <T> void forward(T input,
                        String stream)

Description copied from interface: ProcessorContext

Forwards the input to downstream processors at specified stream.

Specified by:

forward in interface ProcessorContext

Parameters:

input - the input

stream - the stream to forward

isWindowed

public boolean isWindowed()

Description copied from interface: ProcessorContext

Returns true if the processing is in a windowed context and should wait for punctuation before emitting results.

Specified by:

isWindowed in interface ProcessorContext

Returns:

whether this is a windowed context or not

getWindowedParentStreams

public Set<String> getWindowedParentStreams()

Description copied from interface: ProcessorContext

Returns the windowed parent streams. These are the streams where punctuations arrive.

Specified by:

getWindowedParentStreams in interface ProcessorContext

Returns:

the windowed parent streams

setTimestampField

public void setTimestampField(String fieldName)

setAnchor

public void setAnchor(RefCountedTuple anchor)

setEventTimestamp

public void setEventTimestamp(long timestamp)