Package weka.gui.beans

Class Loader

java.lang.Object

java.awt.Component

java.awt.Container

javax.swing.JComponent

javax.swing.JPanel

weka.gui.beans.AbstractDataSource

weka.gui.beans.Loader

All Implemented Interfaces:

ImageObserver, MenuContainer, BeanContextChild, Serializable, Accessible, EnvironmentHandler, BeanCommon, DataSource, EventConstraints, Startable, StructureProducer, Visible, WekaWrapper

public class Loader
extends AbstractDataSource
implements Startable, WekaWrapper, EventConstraints, BeanCommon, EnvironmentHandler, StructureProducer

Loads data sets using weka.core.converter classes

Since:

1.0

Version:

$Revision: 10221 $

Author:

Mark Hall

See Also:

• AbstractDataSource
• UserRequestAcceptor
• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JComponent

JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Component

Component.BaselineResizeBehavior

Field Summary

Fields inherited from class javax.swing.JComponent

TOOL_TIP_TEXT_KEY, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Constructors

Constructor	Description
Loader()

Method Summary

Modifier and Type	Method	Description
void	addDataSourceListener(DataSourceListener dsl)	Add a listener
void	addInstanceListener(InstanceListener dsl)	Add an instance listener
boolean	connectionAllowed(EventSetDescriptor esd)	Returns true if, at this time, the object will accept a connection via the supplied EventSetDescriptor.
boolean	connectionAllowed(String eventName)	Returns true if, at this time, the object will accept a connection via the named event
void	connectionNotification(String eventName, Object source)	Notify this object that it has been registered as a listener with a source for receiving events described by the named event This object is responsible for recording this fact.
void	disconnectionNotification(String eventName, Object source)	Notify this object that it has been deregistered as a listener with a source for named event.
boolean	eventGeneratable(String eventName)	Returns true if the named event can be generated at this time
String	getCustomName()	Get the custom (descriptive) name for this bean (if one has been set)
Loader	getLoader()	Get the loader
String	getStartMessage()	Gets a string that describes the start action.
Instances	getStructure(String eventName)	Get the structure of the output encapsulated in the named event.
Object	getWrappedAlgorithm()	Get the loader
String	globalInfo()	Global info (if it exists) for the wrapped loader
boolean	isBusy()	Returns true if.
static void	main(String[] args)
void	removeDataSourceListener(DataSourceListener dsl)	Remove a listener
void	removeInstanceListener(InstanceListener dsl)	Remove an instance listener
void	setBeanContext(BeanContext bc)	Set a bean context for this bean
void	setCustomName(String name)	Set a custom (descriptive) name for this bean
void	setDB(boolean flag)
void	setEnvironment(Environment env)	Set environment variables to use.
void	setLoader(Loader loader)	Set the loader to use
void	setLog(Logger logger)	Set a logger
void	setWrappedAlgorithm(Object algorithm)	Set the loader
void	start()	Start loading
void	startLoading()	Start loading data
void	stop()	Stop any loading action.

Methods inherited from class weka.gui.beans.AbstractDataSource

addPropertyChangeListener, addVetoableChangeListener, getBeanContext, getVisual, removePropertyChangeListener, removeVetoableChangeListener, setVisual, useDefaultVisual

Methods inherited from class javax.swing.JPanel

getAccessibleContext, getUI, getUIClassID, setUI, updateUI

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintImmediately, paintImmediately, print, printAll, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, contains, createImage, createImage, createVolatileImage, createVolatileImage, dispatchEvent, enable, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

Loader

public Loader()

Method Details

globalInfo

public String globalInfo()

Global info (if it exists) for the wrapped loader

Returns:

the global info

setDB

public void setDB(boolean flag)

setBeanContext

public void setBeanContext(BeanContext bc)

Set a bean context for this bean

Specified by:

setBeanContext in interface BeanContextChild

Overrides:

setBeanContext in class AbstractDataSource

Parameters:

bc - a BeanContext value

setLoader

public void setLoader(Loader loader)

Set the loader to use

Parameters:

loader - a weka.core.converters.Loader value

getStructure

public Instances getStructure(String eventName)

Get the structure of the output encapsulated in the named event. If the structure can't be determined in advance of seeing input, or this StructureProducer does not generate the named event, null should be returned.

Specified by:

getStructure in interface StructureProducer

Parameters:

eventName - the name of the output event that encapsulates the requested output.

Returns:

the structure of the output encapsulated in the named event or null if it can't be determined in advance of seeing input or the named event is not generated by this StructureProduce.

getLoader

public Loader getLoader()

Get the loader

Returns:

a weka.core.converters.Loader value

setWrappedAlgorithm

public void setWrappedAlgorithm(Object algorithm)

Set the loader

Specified by:

setWrappedAlgorithm in interface WekaWrapper

Parameters:

algorithm - a Loader

Throws:

IllegalArgumentException - if an error occurs

getWrappedAlgorithm

public Object getWrappedAlgorithm()

Get the loader

Specified by:

getWrappedAlgorithm in interface WekaWrapper

Returns:

a Loader

startLoading

public void startLoading()

Start loading data

start

public void start()
           throws Exception

Start loading

Specified by:

start in interface Startable

Throws:

Exception - if something goes wrong

getStartMessage

public String getStartMessage()

Gets a string that describes the start action. The KnowledgeFlow uses this in the popup contextual menu for the component. The string can be proceeded by a '$' character to indicate that the component can't be started at present.

Specified by:

getStartMessage in interface Startable

Returns:

a string describing the start action.

eventGeneratable

public boolean eventGeneratable(String eventName)

Returns true if the named event can be generated at this time

Specified by:

eventGeneratable in interface EventConstraints

Parameters:

eventName - the event

Returns:

a boolean value

addDataSourceListener

public void addDataSourceListener(DataSourceListener dsl)

Add a listener

Specified by:

addDataSourceListener in interface DataSource

Overrides:

addDataSourceListener in class AbstractDataSource

Parameters:

dsl - a DataSourceListener value

removeDataSourceListener

public void removeDataSourceListener(DataSourceListener dsl)

Remove a listener

Specified by:

removeDataSourceListener in interface DataSource

Overrides:

removeDataSourceListener in class AbstractDataSource

Parameters:

dsl - a DataSourceListener value

addInstanceListener

public void addInstanceListener(InstanceListener dsl)

Add an instance listener

Specified by:

addInstanceListener in interface DataSource

Overrides:

addInstanceListener in class AbstractDataSource

Parameters:

dsl - a InstanceListener value

removeInstanceListener

public void removeInstanceListener(InstanceListener dsl)

Remove an instance listener

Specified by:

removeInstanceListener in interface DataSource

Overrides:

removeInstanceListener in class AbstractDataSource

Parameters:

dsl - a InstanceListener value

main

public static void main(String[] args)

setCustomName

public void setCustomName(String name)

Set a custom (descriptive) name for this bean

Specified by:

setCustomName in interface BeanCommon

Parameters:

name - the name to use

getCustomName

public String getCustomName()

Get the custom (descriptive) name for this bean (if one has been set)

Specified by:

getCustomName in interface BeanCommon

Returns:

the custom name (or the default name)

setLog

public void setLog(Logger logger)

Set a logger

Specified by:

setLog in interface BeanCommon

Parameters:

logger - a weka.gui.Logger value

setEnvironment

public void setEnvironment(Environment env)

Set environment variables to use.

Specified by:

setEnvironment in interface EnvironmentHandler

Parameters:

env - the environment variables to use

connectionAllowed

public boolean connectionAllowed(EventSetDescriptor esd)

Returns true if, at this time, the object will accept a connection via the supplied EventSetDescriptor. Always returns false for loader.

Specified by:

connectionAllowed in interface BeanCommon

Parameters:

esd - the EventSetDescriptor

Returns:

true if the object will accept a connection

connectionAllowed

public boolean connectionAllowed(String eventName)

Returns true if, at this time, the object will accept a connection via the named event

Specified by:

connectionAllowed in interface BeanCommon

Parameters:

eventName - the name of the event

Returns:

true if the object will accept a connection

connectionNotification

public void connectionNotification(String eventName,
 Object source)

Notify this object that it has been registered as a listener with a source for receiving events described by the named event This object is responsible for recording this fact.

Specified by:

connectionNotification in interface BeanCommon

Parameters:

eventName - the event

source - the source with which this object has been registered as a listener

disconnectionNotification

public void disconnectionNotification(String eventName,
 Object source)

Notify this object that it has been deregistered as a listener with a source for named event. This object is responsible for recording this fact.

Specified by:

disconnectionNotification in interface BeanCommon

Parameters:

eventName - the event

source - the source with which this object has been registered as a listener

stop

public void stop()

Stop any loading action.

Specified by:

stop in interface BeanCommon

isBusy

public boolean isBusy()

Returns true if. at this time, the bean is busy with some (i.e. perhaps a worker thread is performing some calculation).

Specified by:

isBusy in interface BeanCommon

Returns:

true if the bean is busy.