jconch.pipeline.impl
Class FactoryProducer

java.lang.Object
  jconch.pipeline.PipelineStage
      jconch.pipeline.Producer
          jconch.pipeline.impl.FactoryProducer

public abstract class FactoryProducer
extends Producer

A Producer based off of a Factory implementation. Implementation Note: Due to a failing of generics, there is no type-safety available for this implementation.

Author:

Robert Fischer

Field Summary

Fields inherited from class jconch.pipeline.Producer

link

Constructor Summary

protected

FactoryProducer(Factory source, ThreadingModel threading, PipeLink link) Constructor.

Method Summary

protected boolean	isExhausted() Determines if the pipeline stage will not produce any more elements.
Object	produceItem() Method that must be implemented to queue the producer.

Methods inherited from class jconch.pipeline.Producer

execute, getLinkOut, isFinished

Methods inherited from class jconch.pipeline.PipelineStage

getThreadingModel, isStarted, logMessage, start

Methods inherited from class java.lang.Object

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

Constructor Detail

FactoryProducer

protected FactoryProducer(Factory source,
                          ThreadingModel threading,
                          PipeLink link)

Constructor.

Parameters:

source - The factory that will be called to produce new elements.

threading - The threading model.

link - The link we produce things into.

Throws:

org.apache.commons.lang.NullArgumentException - If any argument is null.

Method Detail

isExhausted

protected boolean isExhausted()

Description copied from class: Producer

Determines if the pipeline stage will not produce any more elements. This may be called more than once, and once it returns true, it shall always return true.

Specified by:

isExhausted in class Producer

Returns:

If the stage is exhausted.

produceItem

public Object produceItem()

Description copied from class: Producer

Method that must be implemented to queue the producer.

Specified by:

produceItem in class Producer

Returns:

The next item for the producer, or null if there are no more elements.