Package adams.multiprocess

Class AbstractJob

java.lang.Object

adams.core.logging.LoggingObject

adams.multiprocess.AbstractJob

All Implemented Interfaces:

CleanUpHandler, LoggingSupporter, SizeOfHandler, Stoppable, StoppableWithFeedback, Job, Serializable

Direct Known Subclasses:

AbstractBaselineCorrection.BaselineCorrectionJob, AbstractDenoiser.DenoiserJob, AbstractExperiment.AbstractExperimentJob, AbstractFilter.FilterJob, AbstractGeneticAlgorithm.GeneticAlgorithmJob, AbstractOutlierDetector.DetectorJob, AbstractSmoother.SmootherJob, GeneticAlgorithm.GAJob, SpreadSheetFilter.FilterJob, WekaClassifierRanker.RankingJob, WekaCrossValidationJob, WekaFilter.BatchFilterJob, WekaTestSetEvaluator.EvaluateJob, WekaTrainAssociator.TrainJob, WekaTrainClassifier.BatchTrainJob, WekaTrainClusterer.BatchTrainJob, WekaTrainTestSetEvaluator.EvaluateJob

public abstract class AbstractJob
extends LoggingObject
implements Job

A job is a unit of execution.

Version:

$Revision$

Author:

dale

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	m_Complete	Has this job completed processing?
protected String	m_ExecutionError	whether an error occurred in the execution.
protected JobCompleteListener	m_JobCompleteListener	Object to call once job has been completed.
protected String	m_JobInfo	identifying name of job.
protected boolean	m_Stopped	whether the job has been stopped.

Fields inherited from class adams.core.logging.LoggingObject

m_Logger, m_LoggingIsEnabled, m_LoggingLevel

Constructor Summary

Constructors

Constructor	Description
AbstractJob()	Job constructor.

Method Summary

Modifier and Type	Method	Description
void	cleanUp()	Cleans up data structures, frees up memory.
JobResult	execute()	Override to do computation.
protected String	getAdditionalErrorInformation()	Returns additional information to be added to the error message.
String	getExecutionError()	Returns the execution error, if any.
JobCompleteListener	getJobCompleteListener()	Returns the listener that gets notified when the job got finished.
String	getJobInfo()	Returns the job info/identifier.
boolean	hasExecutionError()	Checks whether there was a problem with the job execution.
boolean	isComplete()	Whether the job has been finished.
boolean	isStopped()	Whether the execution has been stopped.
void	jobCompleted(Job j, JobResult jr)	Called once a job has completed execution.
protected abstract String	postProcessCheck()	Checks whether all post-conditions have been met.
protected abstract String	preProcessCheck()	Checks whether all pre-conditions have been met.
protected abstract void	process()	Does the actual execution of the job.
void	setJobCompleteListener(JobCompleteListener l)	Sets the listener that gets notified when the job got finished.
void	setJobInfo(String value)	Sets the job info/identifier.
void	stopExecution()	Stops the execution.
abstract String	toString()	Returns a string representation of this job.

Methods inherited from class adams.core.logging.LoggingObject

configureLogger, getLogger, getLoggingLevel, initializeLogging, isLoggingEnabled, sizeOf

Methods inherited from class java.lang.Object

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

Methods inherited from interface adams.core.logging.LoggingSupporter

getLogger, isLoggingEnabled

Field Detail

m_JobInfo

protected String m_JobInfo

identifying name of job.

m_Complete

protected boolean m_Complete

Has this job completed processing?

m_JobCompleteListener

protected JobCompleteListener m_JobCompleteListener

Object to call once job has been completed.

m_ExecutionError

protected String m_ExecutionError

whether an error occurred in the execution.

m_Stopped

protected boolean m_Stopped

whether the job has been stopped.

Constructor Detail

AbstractJob

public AbstractJob()

Job constructor.

Method Detail

setJobInfo

public void setJobInfo(String value)

Sets the job info/identifier.

Parameters:

value - the info

getJobInfo

public String getJobInfo()

Returns the job info/identifier.

Specified by:

getJobInfo in interface Job

Returns:

the info

jobCompleted

public void jobCompleted(Job j,
                         JobResult jr)

Called once a job has completed execution.

Specified by:

jobCompleted in interface Job

Parameters:

j - Job

jr - Result of Job

setJobCompleteListener

public void setJobCompleteListener(JobCompleteListener l)

Sets the listener that gets notified when the job got finished.

Specified by:

setJobCompleteListener in interface Job

Parameters:

l - the listener

getJobCompleteListener

public JobCompleteListener getJobCompleteListener()

Returns the listener that gets notified when the job got finished.

Specified by:

getJobCompleteListener in interface Job

Returns:

the listener, can be null

isComplete

public boolean isComplete()

Whether the job has been finished.

Specified by:

isComplete in interface Job

Returns:

true if the job has finished, false otherwise

preProcessCheck

protected abstract String preProcessCheck()

Checks whether all pre-conditions have been met.

Returns:

null if everything is OK, otherwise an error message

process

protected abstract void process()
                         throws Exception

Does the actual execution of the job.

Throws:

Exception - if fails to execute job

postProcessCheck

protected abstract String postProcessCheck()

Checks whether all post-conditions have been met.

Returns:

null if everything is OK, otherwise an error message

getAdditionalErrorInformation

protected String getAdditionalErrorInformation()

Returns additional information to be added to the error message. Default returns an empty string.

Returns:

the additional information

execute

public JobResult execute()

Override to do computation.

Specified by:

execute in interface Job

Returns:

JobResult

hasExecutionError

public boolean hasExecutionError()

Checks whether there was a problem with the job execution.

Specified by:

hasExecutionError in interface Job

Returns:

true if an error occurred

getExecutionError

public String getExecutionError()

Returns the execution error, if any.

Specified by:

getExecutionError in interface Job

Returns:

the error, null if none occurred

cleanUp

public void cleanUp()

Cleans up data structures, frees up memory. Removes dependencies and job parameters.

Specified by:

cleanUp in interface CleanUpHandler

Specified by:

cleanUp in interface Job

stopExecution

public void stopExecution()

Stops the execution.

Specified by:

stopExecution in interface Stoppable

isStopped

public boolean isStopped()

Whether the execution has been stopped.

Specified by:

isStopped in interface StoppableWithFeedback

Returns:

true if stopped

toString

public abstract String toString()

Returns a string representation of this job.

Overrides:

toString in class Object

Returns:

the job as string