org.apache.storm.pmml

Class PMMLPredictorBolt

java.lang.Object

org.apache.storm.topology.base.BaseComponent

org.apache.storm.topology.base.BaseRichBolt

org.apache.storm.topology.base.BaseTickTupleAwareRichBolt

org.apache.storm.pmml.PMMLPredictorBolt

All Implemented Interfaces:

Serializable, IBolt, IComponent, IRichBolt

public class PMMLPredictorBolt
extends BaseTickTupleAwareRichBolt

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor and Description
PMMLPredictorBolt(ModelRunnerFactory modelRunnerFactory, ModelOutputs modelOutputs) Creates an instance of PMMLPredictorBolt that executes, for every tuple, the runner constructed with the ModelRunnerFactory specified in the parameter The PMMLPredictorBolt instantiated with this constructor declares the output fields as specified by the ModelOutputs parameter.

Method Summary

Modifier and Type	Method and Description
void	declareOutputFields(OutputFieldsDeclarer declarer) Declare the output schema for all the streams of this topology.
void	prepare(Map<String,Object> topoConf, TopologyContext context, OutputCollector collector) Called when a task for this component is initialized within a worker on the cluster.
protected void	process(Tuple input) Process a single non-tick tuple of input.
String	toString()

Methods inherited from class org.apache.storm.topology.base.BaseTickTupleAwareRichBolt

execute, onTickTuple

Methods inherited from class org.apache.storm.topology.base.BaseRichBolt

cleanup

Methods inherited from class org.apache.storm.topology.base.BaseComponent

getComponentConfiguration

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.storm.topology.IComponent

getComponentConfiguration

Field Detail

LOG

protected static final org.slf4j.Logger LOG

Constructor Detail

PMMLPredictorBolt

public PMMLPredictorBolt(ModelRunnerFactory modelRunnerFactory,
                         ModelOutputs modelOutputs)

Creates an instance of PMMLPredictorBolt that executes, for every tuple, the runner constructed with the ModelRunnerFactory specified in the parameter The PMMLPredictorBolt instantiated with this constructor declares the output fields as specified by the ModelOutputs parameter.

Method Detail

prepare

public void prepare(Map<String,Object> topoConf,
                    TopologyContext context,
                    OutputCollector collector)

Description copied from interface: IBolt

Called when a task for this component is initialized within a worker on the cluster. It provides the bolt with the environment in which the bolt executes.

This includes the:

Parameters:

topoConf - The Storm configuration for this bolt. This is the configuration provided to the topology merged in with cluster configuration on this machine.

context - This object can be used to get information about this task’s place within the topology, including the task id and component id of this task, input and output information, etc.

collector - The collector is used to emit tuples from this bolt. Tuples can be emitted at any time, including the prepare and cleanup methods. The collector is thread-safe and should be saved as an instance variable of this bolt object.

process

protected void process(Tuple input)

Description copied from class: BaseTickTupleAwareRichBolt

Process a single non-tick tuple of input. Implementation needs to handle ack manually. More details on IBolt.execute(Tuple).

Specified by:

process in class BaseTickTupleAwareRichBolt

Parameters:

input - The input tuple to be processed.

declareOutputFields

public void declareOutputFields(OutputFieldsDeclarer declarer)

Description copied from interface: IComponent

Declare the output schema for all the streams of this topology.

Parameters:

declarer - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream

toString

public String toString()

Overrides:

toString in class Object