org.apache.storm.trident.operation.impl

Class GroupCollector

java.lang.Object

org.apache.storm.trident.operation.impl.GroupCollector

All Implemented Interfaces:

TridentCollector

public class GroupCollector
extends Object
implements TridentCollector

Field Summary

Fields

Modifier and Type	Field and Description
List<Object>	currGroup

Constructor Summary

Constructors

Constructor and Description
GroupCollector(TridentCollector collector, ComboList.Factory factory)

Method Summary

Modifier and Type	Method and Description
void	emit(List<Object> values) Emits a tuple to a Stream
void	reportError(Throwable t) Reports an error.

Methods inherited from class java.lang.Object

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

Field Detail

currGroup

public List<Object> currGroup

Constructor Detail

GroupCollector

public GroupCollector(TridentCollector collector,
                      ComboList.Factory factory)

Method Detail

emit

public void emit(List<Object> values)

Description copied from interface: TridentCollector

Emits a tuple to a Stream

Specified by:

emit in interface TridentCollector

Parameters:

values - a list of values of which the tuple will be composed

reportError

public void reportError(Throwable t)

Description copied from interface: TridentCollector

Reports an error. The corresponding stack trace will be visible in the Storm UI.

Note that calling this method does not alter the processing of a batch. To explicitly fail a batch and trigger a replay, components should throw FailedException.

Specified by:

reportError in interface TridentCollector

Parameters:

t - The instance of the error (Throwable) being reported.