net.sf.okapi.common.pipeline
Class Pipeline

java.lang.Object
  net.sf.okapi.common.pipeline.Pipeline

All Implemented Interfaces:

IObservable, IObserver, IPipeline

public class Pipeline
extends java.lang.Object
implements IPipeline, IObservable, IObserver

Default implementations of the IPipeline interface.

Field Summary

static java.lang.String

DEFAULT_ID

Constructor Summary

Pipeline()
Creates a new Pipeline object.

Method Summary

void	addObserver(IObserver observer) Attaches a observer to the Observable.
void	addStep(IPipelineStep step) Adds a step to this pipeline.
void	cancel() Cancels processing on this pipeline.
void	clearSteps() Remove all the IPipelineSteps from the pipeline.
int	countObservers() Counts how many Observers were attached to this class.
void	deleteObserver(IObserver observer) Detaches a previously attached observer to the observable.
void	deleteObservers() Detaches all previously attached observer to the observable.
void	destroy() Frees all resources from all steps in this pipeline.
void	endBatch() Finishes a batch of inputs.
java.lang.String	getId() Get the Pipelines identifier.
java.util.List<IObserver>	getObservers() Returns list of observers registered with the Observable.
PipelineReturnValue	getState() Gets the current pipeline state.
java.util.List<IPipelineStep>	getSteps() Gets the list of all steps in this pipeline.
void	notifyObservers() Notifies all attached observers about changes in the observable.
void	notifyObservers(java.lang.Object arg) Notifies all attached observers about changes in the observable.
void	process(Event input) Starts IPipeline processing with a Event as input.
void	process(RawDocument input) Starts IPipeline processing with a RawDocument as input.
void	setId(java.lang.String id) Set the pipelines identifier.
void	startBatch() Starts a batch of inputs.
void	update(IObservable o, java.lang.Object arg) This method is called whenever the observed object is changed.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_ID

public static final java.lang.String DEFAULT_ID

See Also:

Constant Field Values

Constructor Detail

Pipeline

public Pipeline()

Creates a new Pipeline object.

Method Detail

startBatch

public void startBatch()

Description copied from interface: IPipeline

Starts a batch of inputs.

Specified by:

startBatch in interface IPipeline

endBatch

public void endBatch()

Description copied from interface: IPipeline

Finishes a batch of inputs.

Specified by:

endBatch in interface IPipeline

addStep

public void addStep(IPipelineStep step)

Description copied from interface: IPipeline

Adds a step to this pipeline. Steps are executed in the order they are added.

Specified by:

addStep in interface IPipeline

Parameters:

step - the step to add.

getSteps

public java.util.List<IPipelineStep> getSteps()

Description copied from interface: IPipeline

Gets the list of all steps in this pipeline.

Specified by:

getSteps in interface IPipeline

Returns:

a list of all steps in this pipeline, the list may be empty.

cancel

public void cancel()

Description copied from interface: IPipeline

Cancels processing on this pipeline.

Specified by:

cancel in interface IPipeline

getState

public PipelineReturnValue getState()

Description copied from interface: IPipeline

Gets the current pipeline state.

Specified by:

getState in interface IPipeline

Returns:

the current state of the pipeline.

process

public void process(RawDocument input)

Description copied from interface: IPipeline

Starts IPipeline processing with a RawDocument as input. This is a convenience method that calls IPipeline.process(Event).

Specified by:

process in interface IPipeline

Parameters:

input - the RawDocument to process.

process

public void process(Event input)

Description copied from interface: IPipeline

Starts IPipeline processing with a Event as input.

Specified by:

process in interface IPipeline

Parameters:

input - event that primes the IPipeline

destroy

public void destroy()

Description copied from interface: IPipeline

Frees all resources from all steps in this pipeline.

Specified by:

destroy in interface IPipeline

clearSteps

public void clearSteps()

Description copied from interface: IPipeline

Remove all the IPipelineSteps from the pipeline. Also calls the destroy() method on each step.

Specified by:

clearSteps in interface IPipeline

getId

public java.lang.String getId()

Description copied from interface: IPipeline

Get the Pipelines identifier.

Specified by:

getId in interface IPipeline

Returns:

String identifier

setId

public void setId(java.lang.String id)

Description copied from interface: IPipeline

Set the pipelines identifier.

Specified by:

setId in interface IPipeline

update

public void update(IObservable o,
                   java.lang.Object arg)

Description copied from interface: IObserver

This method is called whenever the observed object is changed.

Specified by:

update in interface IObserver

addObserver

public void addObserver(IObserver observer)

Description copied from interface: IObservable

Attaches a observer to the Observable. After attachment the observer gets informed about changes in the Observable.

Specified by:

addObserver in interface IObservable

Parameters:

observer - The observer to attach to the observable

countObservers

public int countObservers()

Description copied from interface: IObservable

Counts how many Observers were attached to this class.

Specified by:

countObservers in interface IObservable

Returns:

the number of Observers

See Also:

IObserver

deleteObserver

public void deleteObserver(IObserver observer)

Description copied from interface: IObservable

Detaches a previously attached observer to the observable. After detachment the observer does no longer receive change notifications from the observable.

Specified by:

deleteObserver in interface IObservable

Parameters:

observer - The observer to detach from the observable

notifyObservers

public void notifyObservers()

Description copied from interface: IObservable

Notifies all attached observers about changes in the observable.

Specified by:

notifyObservers in interface IObservable

notifyObservers

public void notifyObservers(java.lang.Object arg)

Description copied from interface: IObservable

Notifies all attached observers about changes in the observable.

Specified by:

notifyObservers in interface IObservable

Parameters:

arg - an arbitrary Object to be passed to the Observer

deleteObservers

public void deleteObservers()

Description copied from interface: IObservable

Detaches all previously attached observer to the observable. After detachment observers do not longer receive change notifications from the observable.

Specified by:

deleteObservers in interface IObservable

getObservers

public java.util.List<IObserver> getObservers()

Description copied from interface: IObservable

Returns list of observers registered with the Observable. List returned is unmodifiable list.

Specified by:

getObservers in interface IObservable

Returns:

list of observers