adams.flow.sink
Class DownloadFile

java.lang.Object
  adams.core.ConsoleObject
      adams.core.option.AbstractOptionHandler
          adams.flow.core.AbstractActor
              adams.flow.sink.AbstractSink
                  adams.flow.sink.AbstractFileWriter
                      adams.flow.sink.DownloadFile

All Implemented Interfaces:

AdditionalInformationHandler, CleanUpHandler, Debuggable, DebugOutputHandler, Destroyable, OptionHandler, QuickInfoSupporter, ShallowCopySupporter<AbstractActor>, SizeOfHandler, Stoppable, VariableChangeListener, Actor, ErrorHandler, InputConsumer, Serializable, Comparable

public class DownloadFile
extends AbstractFileWriter

Downloads a file from a URL and saves it locally.

Input/output:
- accepts:
java.lang.String
java.net.URL

Valid options are:

-D <int> (property: debugLevel)
    The greater the number the more additional info the scheme may output to
    the console (0 = off).
    default: 0
    minimum: 0
 

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

-annotation <adams.core.base.BaseText> (property: annotations)
    The annotations to attach to this actor.
    default:
 

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

-stop-flow-on-error (property: stopFlowOnError)
    If set to true, the flow gets stopped in case this actor encounters an error;
     useful for critical actors.
 

-output <adams.core.io.PlaceholderFile> (property: outputFile)
    The file to save the downloaded content to.
    default: .
 

-buffer-size <int> (property: bufferSize)
    The size of byte-buffer used for reading/writing the content.
    default: 1024
    minimum: 1
 

Version:

$Revision: 6830 $

Author:

fracpete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

protected int

m_BufferSize the buffer size to use.

Fields inherited from class adams.flow.sink.AbstractFileWriter

m_OutputFile

Fields inherited from class adams.flow.sink.AbstractSink

BACKUP_INPUT, m_InputToken

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_Headless, m_Name, m_Parent, m_Root, m_ScopeHandler, m_Self, m_Skip, m_StopFlowOnError, m_StopMessage, m_Stopped, m_StorageHandler, m_VariablesUpdated

Fields inherited from class adams.core.option.AbstractOptionHandler

m_DebugLevel, m_OptionManager

Fields inherited from interface adams.flow.core.Actor

FILE_EXTENSION, FILE_EXTENSION_GZ

Constructor Summary

DownloadFile()

Method Summary

Class[]	accepts() Returns the class that the consumer accepts.
String	bufferSizeTipText() Returns the tip text for this property.
void	defineOptions() Adds options to the internal list of options.
protected String	doExecute() Executes the flow item.
int	getBufferSize() Get output file.
String	getQuickInfo() Returns a quick info about the actor, which will be displayed in the GUI.
String	globalInfo() Returns a string describing the object.
String	outputFileTipText() Returns the tip text for this property.
void	setBufferSize(int value) Sets the size of the buffer.

Methods inherited from class adams.flow.sink.AbstractFileWriter

getDefaultOutputFile, getOutputFile, setOutputFile, setUp

Methods inherited from class adams.flow.sink.AbstractSink

backupState, input, restoreState, wrapUp

Methods inherited from class adams.flow.core.AbstractActor

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

Methods inherited from class adams.core.option.AbstractOptionHandler

cleanUpOptions, debug, debugLevelTipText, finishInit, getDebugLevel, getOptionManager, isDebugOn, newOptionManager, setDebugLevel, toCommandLine, toString

Methods inherited from class adams.core.ConsoleObject

getDebugging, getSystemErr, getSystemOut

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, debug, destroy, equals, execute, findVariables, getAnnotations, getDefaultName, getDetectedVariables, getErrorHandler, getFlowExecutionListeningSupporter, getFullName, getName, getNextSibling, getParent, getParentComponent, getPreviousSibling, getRoot, getScopeHandler, getSkip, getStopFlowOnError, getStopMessage, getStorageHandler, getVariables, handleError, hasErrorHandler, hasStopMessage, index, isExecuted, isFinished, isHeadless, isStopped, setAnnotations, setErrorHandler, setHeadless, setName, setParent, setSkip, setStopFlowOnError, setVariables, sizeOf, stopExecution, stopExecution, variableChanged

Methods inherited from interface adams.core.AdditionalInformationHandler

getAdditionalInformation

Methods inherited from interface adams.core.option.OptionHandler

cleanUpOptions, getOptionManager

Field Detail

m_BufferSize

protected int m_BufferSize

the buffer size to use.

Constructor Detail

DownloadFile

public DownloadFile()

Method Detail

globalInfo

public String globalInfo()

Returns a string describing the object.

Specified by:

globalInfo in class AbstractOptionHandler

Returns:

a description suitable for displaying in the gui

defineOptions

public void defineOptions()

Adds options to the internal list of options.

Specified by:

defineOptions in interface OptionHandler

Overrides:

defineOptions in class AbstractFileWriter

getQuickInfo

public String getQuickInfo()

Returns a quick info about the actor, which will be displayed in the GUI.

Specified by:

getQuickInfo in interface QuickInfoSupporter

Specified by:

getQuickInfo in interface Actor

Overrides:

getQuickInfo in class AbstractFileWriter

Returns:

null if no info available, otherwise short string

setBufferSize

public void setBufferSize(int value)

Sets the size of the buffer.

Parameters:

value - the size

getBufferSize

public int getBufferSize()

Get output file.

Returns:

file

bufferSizeTipText

public String bufferSizeTipText()

Returns the tip text for this property.

Returns:

tip text for this property suitable for displaying in the GUI or for listing the options.

outputFileTipText

public String outputFileTipText()

Returns the tip text for this property.

Specified by:

outputFileTipText in class AbstractFileWriter

Returns:

tip text for this property suitable for displaying in the GUI or for listing the options.

accepts

public Class[] accepts()

Returns the class that the consumer accepts.

Returns:

java.lang.String.class, java.net.URL.class

doExecute

protected String doExecute()

Executes the flow item.

Specified by:

doExecute in class AbstractActor

Returns:

null if everything is fine, otherwise error message