Package org.apache.storm.trident.operation.impl

Class MapFunctionExecutor

java.lang.Object

org.apache.storm.trident.operation.BaseOperation

org.apache.storm.trident.operation.impl.MapFunctionExecutor

All Implemented Interfaces:

Serializable, EachOperation, Function, Operation

public class MapFunctionExecutor
extends BaseOperation
implements Function

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
MapFunctionExecutor(MapFunction function)

Method Summary

Modifier and Type	Method	Description
void	cleanup()	No-op implemnation.
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)	No-op implementation.

Methods inherited from class java.lang.Object

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

Constructor Detail

MapFunctionExecutor

public MapFunctionExecutor(MapFunction function)

Method Detail

prepare

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

Description copied from class: BaseOperation

No-op implementation.

Specified by:

prepare in interface Operation

Overrides:

prepare in class BaseOperation

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 class: BaseOperation

No-op implemnation.

Specified by:

cleanup in interface Operation

Overrides:

cleanup in class BaseOperation

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