Package adams.flow.transformer

Class PassThrough

java.lang.Object

adams.core.logging.LoggingObject

adams.core.logging.CustomLoggingLevelObject

adams.core.option.AbstractOptionHandler

adams.flow.core.AbstractActor

adams.flow.transformer.AbstractTransformer

adams.flow.transformer.PassThrough

All Implemented Interfaces:

AdditionalInformationHandler, CleanUpHandler, Destroyable, GlobalInfoSupporter, LoggingLevelHandler, LoggingSupporter, OptionHandler, QuickInfoSupporter, ShallowCopySupporter<Actor>, SizeOfHandler, Stoppable, StoppableWithFeedback, VariablesInspectionHandler, VariableChangeListener, Actor, ErrorHandler, InputConsumer, OutputProducer, Serializable, Comparable

public class PassThrough
extends AbstractTransformer

Dummy transformer that passes tokens through.

Input/output:
- accepts:

   adams.flow.core.Unknown

- generates:

   adams.flow.core.Unknown

Valid options are:

-D (property: debug)
         If set to true, scheme may output additional info to the console.
 

-name <java.lang.String> (property: name)
         The name of the actor.
         default: PassThrough
 

-annotation <adams.core.base.BaseString> [-annotation ...] (property: annotations)
         The annotations to attach to this actor.
 

-skip (property: skip)
         If set to true, transformation is skipped and the input token is just forwarded
          as it is.
 

Version:

$Revision$

Author:

fracpete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

Fields inherited from class adams.flow.transformer.AbstractTransformer

BACKUP_INPUT, BACKUP_OUTPUT, m_InputToken, m_OutputToken

Fields inherited from class adams.flow.core.AbstractActor

m_Annotations, m_BackupState, m_DetectedObjectVariables, m_DetectedVariables, m_ErrorHandler, m_Executed, m_Executing, m_ExecutionListeningSupporter, m_FullName, m_LoggingPrefix, m_Name, m_Parent, m_ScopeHandler, m_Self, m_Silent, m_Skip, m_StopFlowOnError, m_StopMessage, m_Stopped, m_StorageHandler, m_VariablesUpdated

Fields inherited from class adams.core.option.AbstractOptionHandler

m_OptionManager

Fields inherited from class adams.core.logging.LoggingObject

m_Logger, m_LoggingIsEnabled, m_LoggingLevel

Fields inherited from interface adams.flow.core.Actor

FILE_EXTENSION, FILE_EXTENSION_GZ

Constructor Summary

Constructors

Constructor	Description
PassThrough()

Method Summary

Modifier and Type	Method	Description
Class[]	accepts()	Returns the class that the consumer accepts.
protected String	doExecute()	Executes the flow item.
Class[]	generates()	Returns the class of objects that it generates.
String	globalInfo()	Returns a string describing the object.
boolean	hasPendingOutput()	Checks whether there is pending output to be collected after executing the flow item.
void	input(Token token)	The method that accepts the input token and then processes it.
Token	output()	Returns the generated token.

Methods inherited from class adams.flow.transformer.AbstractTransformer

backupState, currentInput, execute, hasInput, postExecute, restoreState, wrapUp

Methods inherited from class adams.flow.core.AbstractActor

annotationsTipText, canInspectOptions, canPerformSetUpCheck, cleanUp, compareTo, configureLogger, defineOptions, destroy, equals, finalUpdateVariables, findVariables, findVariables, forceVariables, forCommandLine, forName, forName, getAdditionalInformation, getAnnotations, getDefaultName, getDetectedVariables, getErrorHandler, getFlowActors, getFlowExecutionListeningSupporter, getFullName, getName, getNextSibling, getParent, getParentComponent, getPreviousSibling, getQuickInfo, getRoot, getScopeHandler, getSilent, getSkip, getStopFlowOnError, getStopMessage, getStorageHandler, getVariables, handleError, handleException, hasErrorHandler, hasStopMessage, index, initialize, isBackedUp, isExecuted, isExecuting, isFinished, isHeadless, isStopped, nameTipText, performSetUpChecks, performVariableChecks, preExecute, pruneBackup, pruneBackup, reset, setAnnotations, setErrorHandler, setName, setParent, setSilent, setSkip, setStopFlowOnError, setUp, setVariables, shallowCopy, shallowCopy, silentTipText, sizeOf, skipTipText, stopExecution, stopExecution, stopFlowOnErrorTipText, updateDetectedVariables, updatePrefix, updateVariables, variableChanged

Methods inherited from class adams.core.option.AbstractOptionHandler

cleanUpOptions, finishInit, getDefaultLoggingLevel, getOptionManager, loggingLevelTipText, newOptionManager, setLoggingLevel, toCommandLine, toString

Methods inherited from class adams.core.logging.LoggingObject

getLogger, getLoggingLevel, initializeLogging, isLoggingEnabled

Methods inherited from class java.lang.Object

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

Methods inherited from interface adams.flow.core.Actor

cleanUp, compareTo, destroy, equals, findVariables, getAnnotations, getDefaultName, getDetectedVariables, getErrorHandler, getFlowExecutionListeningSupporter, getFullName, getName, getNextSibling, getParent, getParentComponent, getPreviousSibling, getQuickInfo, getRoot, getScopeHandler, getSilent, getSkip, getStopFlowOnError, getStopMessage, getStorageHandler, getVariables, handleError, hasErrorHandler, hasStopMessage, index, isExecuted, isFinished, isHeadless, isStopped, setAnnotations, setErrorHandler, setName, setParent, setSilent, setSkip, setStopFlowOnError, setUp, setVariables, shallowCopy, shallowCopy, sizeOf, stopExecution, stopExecution, toCommandLine, variableChanged

Methods inherited from interface adams.core.AdditionalInformationHandler

getAdditionalInformation

Methods inherited from interface adams.core.logging.LoggingLevelHandler

getLoggingLevel, setLoggingLevel

Methods inherited from interface adams.core.logging.LoggingSupporter

getLogger, isLoggingEnabled

Methods inherited from interface adams.core.option.OptionHandler

cleanUpOptions, defineOptions, getOptionManager

Methods inherited from interface adams.core.VariablesInspectionHandler

canInspectOptions

Constructor Detail

PassThrough

public PassThrough()

Method Detail

globalInfo

public String globalInfo()

Returns a string describing the object.

Specified by:

globalInfo in interface GlobalInfoSupporter

Specified by:

globalInfo in class AbstractOptionHandler

Returns:

a description suitable for displaying in the gui

accepts

public Class[] accepts()

Returns the class that the consumer accepts.

Returns:

adams.flow.core.Unknown.class

input

public void input(Token token)

The method that accepts the input token and then processes it.

Specified by:

input in interface InputConsumer

Overrides:

input in class AbstractTransformer

Parameters:

token - the token to accept and process

See Also:

AbstractTransformer.m_InputToken

generates

public Class[] generates()

Returns the class of objects that it generates.

Returns:

adams.flow.core.Unknown.class

output

public Token output()

Returns the generated token.

Specified by:

output in interface OutputProducer

Overrides:

output in class AbstractTransformer

Returns:

the generated token

hasPendingOutput

public boolean hasPendingOutput()

Checks whether there is pending output to be collected after executing the flow item.

Specified by:

hasPendingOutput in interface OutputProducer

Overrides:

hasPendingOutput in class AbstractTransformer

Returns:

true if there is pending output

doExecute

protected String doExecute()

Executes the flow item.

Specified by:

doExecute in class AbstractActor

Returns:

null if everything is fine, otherwise error message