org.apache.storm.trident.operation.builtin

Class Debug

java.lang.Object

org.apache.storm.trident.operation.BaseOperation

org.apache.storm.trident.operation.BaseFilter

org.apache.storm.trident.operation.builtin.Debug

All Implemented Interfaces:

Serializable, EachOperation, Filter, Operation

public class Debug
extends BaseFilter

Filter for debugging purposes. The `isKeep()` method simply prints the tuple to `System.out` and returns `true`.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Debug()
Debug(boolean useLogger)
Debug(String name) Creates a `Debug` filter with a string identifier.

Method Summary

Modifier and Type	Method and Description
boolean	isKeep(TridentTuple tuple) Determines if a tuple should be filtered out of a stream.

Methods inherited from class org.apache.storm.trident.operation.BaseOperation

cleanup, prepare

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.storm.trident.operation.Operation

cleanup, prepare

Constructor Detail

Debug

public Debug()

Debug

public Debug(boolean useLogger)

Debug

public Debug(String name)

Creates a `Debug` filter with a string identifier.

Method Detail

isKeep

public boolean isKeep(TridentTuple tuple)

Description copied from interface: Filter

Determines if a tuple should be filtered out of a stream.

Parameters:

tuple - the tuple being evaluated

Returns:

`false` to drop the tuple, `true` to keep the tuple