org.apache.storm.trident.operation.impl

Class CombinerAggregatorInitImpl

java.lang.Object

org.apache.storm.trident.operation.impl.CombinerAggregatorInitImpl

All Implemented Interfaces:

Serializable, EachOperation, Function, Operation

public class CombinerAggregatorInitImpl
extends Object
implements Function

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CombinerAggregatorInitImpl(CombinerAggregator agg)

Method Summary

Modifier and Type	Method and Description
void	cleanup() When running in local mode, called when the local cluster is being shut down.
void	execute(TridentTuple tuple, TridentCollector collector) Performs the function logic on an individual tuple and emits 0 or more tuples.
void	prepare(Map<String,Object> conf, TridentOperationContext context) Called when the Operation is first initialized.

Methods inherited from class java.lang.Object

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

Constructor Detail

CombinerAggregatorInitImpl

public CombinerAggregatorInitImpl(CombinerAggregator agg)

Method Detail

execute

public void execute(TridentTuple tuple,
                    TridentCollector collector)

Description copied from interface: Function

Performs the function logic on an individual tuple and emits 0 or more tuples.

Specified by:

execute in interface Function

Parameters:

tuple - The incoming tuple

collector - A collector instance that can be used to emit tuples

prepare

public void prepare(Map<String,Object> conf,
                    TridentOperationContext context)

Description copied from interface: Operation

Called when the Operation is first initialized.

Specified by:

prepare in interface Operation

Parameters:

conf - the Storm configuration map

context - the operation context which provides information such as the number of partitions in the stream, and the current partition index. It also provides methods for registering operation-specific metrics.

See Also:

TridentOperationContext

cleanup

public void cleanup()

Description copied from interface: Operation

When running in local mode, called when the local cluster is being shut down.

Specified by:

cleanup in interface Operation