meka.gui.dataviewer

Class DataTableModel

java.lang.Object

javax.swing.table.AbstractTableModel

javax.swing.table.DefaultTableModel

meka.gui.dataviewer.DataTableModel

All Implemented Interfaces:

Serializable, TableModel, weka.core.Undoable

public class DataTableModel
extends DefaultTableModel
implements weka.core.Undoable

The model for the Data-Viewer.

Version:

$Revision: 12708 $

Author:

FracPete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Hashtable<String,String>	m_Cache for caching long relational and string values that get processed for display.
protected weka.core.Instances	m_Data the data
protected boolean	m_IgnoreChanges whether to ignore changes, i.e.
protected HashSet<TableModelListener>	m_Listeners the listeners
protected boolean	m_NotificationEnabled whether notfication is enabled
protected boolean	m_ReadOnly whether the table is read-only
protected boolean	m_ShowAttributeIndex whether to display the attribute index in the table header.
protected boolean	m_UndoEnabled whether undo is active
protected Vector<File>	m_UndoList the undo list (contains temp.

Fields inherited from class javax.swing.table.DefaultTableModel

columnIdentifiers, dataVector

Fields inherited from class javax.swing.table.AbstractTableModel

listenerList

Constructor Summary

Constructors

Constructor and Description
DataTableModel(weka.core.Instances data) initializes the model with the given data
DataTableModel(String filename, weka.core.converters.AbstractFileLoader... loaders) initializes the object and loads the given file

Method Summary

Modifier and Type	Method and Description
void	addTableModelListener(TableModelListener l) adds a listener to the list that is notified each time a change to data model occurs
void	addUndoPoint() adds an undo point to the undo history, if the undo support is enabled
void	attributeAsClassAt(int columnIndex) sets the attribute at the given col index as the new class attribute, i.e.
boolean	canUndo() returns whether an undo is possible, i.e.
void	clearUndo() removes the undo history
void	deleteAttributeAt(int columnIndex) deletes the attribute at the given col index.
void	deleteAttributeAt(int columnIndex, boolean notify) deletes the attribute at the given col index
void	deleteAttributes(int[] columnIndices) deletes the attributes at the given indices
void	deleteInstanceAt(int rowIndex) deletes the instance at the given index
void	deleteInstanceAt(int rowIndex, boolean notify) deletes the instance at the given index
void	deleteInstances(int[] rowIndices) deletes the instances at the given positions
weka.core.Attribute	getAttributeAt(int columnIndex) returns the attribute at the given index, can be NULL if not an attribute column
int	getAttributeColumn(String name) returns the column of the given attribute name, -1 if not found
Class<?>	getColumnClass(int columnIndex) returns the most specific superclass for all the cell values in the column (always String)
int	getColumnCount() returns the number of columns in the model
String	getColumnName(int columnIndex) returns the name of the column at columnIndex
weka.core.Instances	getInstances() returns the data
double	getInstancesValueAt(int rowIndex, int columnIndex) returns the double value of the underlying Instances object at the given position, -1 if out of bounds
int	getRowCount() returns the number of rows in the model
boolean	getShowAttributeIndex() Returns whether to display the attribute index in the header.
int	getType(int columnIndex) returns the TYPE of the attribute at the given position
int	getType(int rowIndex, int columnIndex) returns the TYPE of the attribute at the given position
Object	getValueAt(int rowIndex, int columnIndex) returns the value for the cell at columnindex and rowIndex
void	insertInstance(int index)
void	insertInstance(int index, boolean notify)
boolean	isCellEditable(int rowIndex, int columnIndex) returns true if the cell at rowindex and columnindexis editable
protected boolean	isClassIndex(int columnIndex) checks whether the column represents the class or not
boolean	isMissingAt(int rowIndex, int columnIndex) checks whether the value at the given position is missing
boolean	isNotificationEnabled() returns whether the notification of changes is enabled
boolean	isReadOnly() returns whether the model is read-only
boolean	isUndoEnabled() returns whether undo support is enabled
protected void	loadFile(String filename, weka.core.converters.AbstractFileLoader... loaders) loads the specified ARFF file
void	notifyListener(TableModelEvent e) notfies all listener of the change of the model
void	removeTableModelListener(TableModelListener l) removes a listener from the list that is notified each time a change to the data model occurs
void	renameAttributeAt(int columnIndex, String newName) renames the attribute at the given col index
void	setInstances(weka.core.Instances data) sets the data
void	setNotificationEnabled(boolean enabled) sets whether the notification of changes is enabled
void	setReadOnly(boolean value) sets whether the model is read-only
void	setShowAttributeIndex(boolean value) Sets whether to display the attribute index in the header.
void	setUndoEnabled(boolean enabled) sets whether undo support is enabled
void	setValueAt(Object aValue, int rowIndex, int columnIndex) sets the value in the cell at columnIndex and rowIndex to aValue.
void	setValueAt(Object aValue, int rowIndex, int columnIndex, boolean notify) sets the value in the cell at columnIndex and rowIndex to aValue.
void	sortInstances(int columnIndex) sorts the instances via the given attribute
void	sortInstances(int columnIndex, boolean ascending) sorts the instances via the given attribute
void	undo() undoes the last action

Methods inherited from class javax.swing.table.DefaultTableModel

addColumn, addColumn, addColumn, addRow, addRow, convertToVector, convertToVector, getDataVector, insertRow, insertRow, moveRow, newDataAvailable, newRowsAdded, removeRow, rowsRemoved, setColumnCount, setColumnIdentifiers, setColumnIdentifiers, setDataVector, setDataVector, setNumRows, setRowCount

Methods inherited from class javax.swing.table.AbstractTableModel

findColumn, fireTableCellUpdated, fireTableChanged, fireTableDataChanged, fireTableRowsDeleted, fireTableRowsInserted, fireTableRowsUpdated, fireTableStructureChanged, getListeners, getTableModelListeners

Methods inherited from class java.lang.Object

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

Field Detail

m_Listeners

protected HashSet<TableModelListener> m_Listeners

the listeners

m_Data

protected weka.core.Instances m_Data

the data

m_NotificationEnabled

protected boolean m_NotificationEnabled

whether notfication is enabled

m_UndoEnabled

protected boolean m_UndoEnabled

whether undo is active

m_IgnoreChanges

protected boolean m_IgnoreChanges

whether to ignore changes, i.e. not adding to undo history

m_UndoList

protected Vector<File> m_UndoList

the undo list (contains temp. filenames)

m_ReadOnly

protected boolean m_ReadOnly

whether the table is read-only

m_ShowAttributeIndex

protected boolean m_ShowAttributeIndex

whether to display the attribute index in the table header.

m_Cache

protected Hashtable<String,String> m_Cache

for caching long relational and string values that get processed for display.

Constructor Detail

DataTableModel

public DataTableModel(String filename,
                      weka.core.converters.AbstractFileLoader... loaders)

initializes the object and loads the given file

Parameters:

filename - the file to load

loaders - optional varargs for a loader to use

DataTableModel

public DataTableModel(weka.core.Instances data)

initializes the model with the given data

Parameters:

data - the data to use

Method Detail

isNotificationEnabled

public boolean isNotificationEnabled()

returns whether the notification of changes is enabled

Returns:

true if notification of changes is enabled

setNotificationEnabled

public void setNotificationEnabled(boolean enabled)

sets whether the notification of changes is enabled

Parameters:

enabled - enables/disables the notification

isUndoEnabled

public boolean isUndoEnabled()

returns whether undo support is enabled

Specified by:

isUndoEnabled in interface weka.core.Undoable

Returns:

true if undo support is enabled

setUndoEnabled

public void setUndoEnabled(boolean enabled)

sets whether undo support is enabled

Specified by:

setUndoEnabled in interface weka.core.Undoable

Parameters:

enabled - whether to enable/disable undo support

isReadOnly

public boolean isReadOnly()

returns whether the model is read-only

Returns:

true if model is read-only

setReadOnly

public void setReadOnly(boolean value)

sets whether the model is read-only

Parameters:

value - if true the model is set to read-only

loadFile

protected void loadFile(String filename,
                        weka.core.converters.AbstractFileLoader... loaders)

loads the specified ARFF file

Parameters:

filename - the file to load

loaders - optional varargs for a loader to use

setInstances

public void setInstances(weka.core.Instances data)

sets the data

Parameters:

data - the data to use

getInstances

public weka.core.Instances getInstances()

returns the data

Returns:

the current data

getAttributeAt

public weka.core.Attribute getAttributeAt(int columnIndex)

returns the attribute at the given index, can be NULL if not an attribute column

Parameters:

columnIndex - the index of the column

Returns:

the attribute at the position

getType

public int getType(int columnIndex)

returns the TYPE of the attribute at the given position

Parameters:

columnIndex - the index of the column

Returns:

the attribute type

getType

public int getType(int rowIndex,
                   int columnIndex)

returns the TYPE of the attribute at the given position

Parameters:

rowIndex - the index of the row

columnIndex - the index of the column

Returns:

the attribute type

deleteAttributeAt

public void deleteAttributeAt(int columnIndex)

deletes the attribute at the given col index. notifies the listeners.

Parameters:

columnIndex - the index of the attribute to delete

deleteAttributeAt

public void deleteAttributeAt(int columnIndex,
                              boolean notify)

deletes the attribute at the given col index

Parameters:

columnIndex - the index of the attribute to delete

notify - whether to notify the listeners

deleteAttributes

public void deleteAttributes(int[] columnIndices)

deletes the attributes at the given indices

Parameters:

columnIndices - the column indices

renameAttributeAt

public void renameAttributeAt(int columnIndex,
                              String newName)

renames the attribute at the given col index

Parameters:

columnIndex - the index of the column

newName - the new name of the attribute

attributeAsClassAt

public void attributeAsClassAt(int columnIndex)

sets the attribute at the given col index as the new class attribute, i.e. it moves it to the end of the attributes

Parameters:

columnIndex - the index of the column

deleteInstanceAt

public void deleteInstanceAt(int rowIndex)

deletes the instance at the given index

Parameters:

rowIndex - the index of the row

deleteInstanceAt

public void deleteInstanceAt(int rowIndex,
                             boolean notify)

deletes the instance at the given index

Parameters:

rowIndex - the index of the row

notify - whether to notify the listeners

insertInstance

public void insertInstance(int index)

insertInstance

public void insertInstance(int index,
                           boolean notify)

deleteInstances

public void deleteInstances(int[] rowIndices)

deletes the instances at the given positions

Parameters:

rowIndices - the indices to delete

sortInstances

public void sortInstances(int columnIndex)

sorts the instances via the given attribute

Parameters:

columnIndex - the index of the column

sortInstances

public void sortInstances(int columnIndex,
                          boolean ascending)

sorts the instances via the given attribute

Parameters:

columnIndex - the index of the column

ascending - ascending if true, otherwise descending

getAttributeColumn

public int getAttributeColumn(String name)

returns the column of the given attribute name, -1 if not found

Parameters:

name - the name of the attribute

Returns:

the column index or -1 if not found

getColumnClass

public Class<?> getColumnClass(int columnIndex)

returns the most specific superclass for all the cell values in the column (always String)

Specified by:

getColumnClass in interface TableModel

Overrides:

getColumnClass in class AbstractTableModel

Parameters:

columnIndex - the column index

Returns:

the class of the column

getColumnCount

public int getColumnCount()

returns the number of columns in the model

Specified by:

getColumnCount in interface TableModel

Overrides:

getColumnCount in class DefaultTableModel

Returns:

the number of columns

isClassIndex

protected boolean isClassIndex(int columnIndex)

checks whether the column represents the class or not

Parameters:

columnIndex - the index of the column

Returns:

true if the column is the class attribute

getColumnName

public String getColumnName(int columnIndex)

returns the name of the column at columnIndex

Specified by:

getColumnName in interface TableModel

Overrides:

getColumnName in class DefaultTableModel

Parameters:

columnIndex - the index of the column

Returns:

the name of the column

getRowCount

public int getRowCount()

returns the number of rows in the model

Specified by:

getRowCount in interface TableModel

Overrides:

getRowCount in class DefaultTableModel

Returns:

the number of rows

isMissingAt

public boolean isMissingAt(int rowIndex,
                           int columnIndex)

checks whether the value at the given position is missing

Parameters:

rowIndex - the row index

columnIndex - the column index

Returns:

true if the value at the position is missing

getInstancesValueAt

public double getInstancesValueAt(int rowIndex,
                                  int columnIndex)

returns the double value of the underlying Instances object at the given position, -1 if out of bounds

Parameters:

rowIndex - the row index

columnIndex - the column index

Returns:

the underlying value in the Instances object

getValueAt

public Object getValueAt(int rowIndex,
                         int columnIndex)

returns the value for the cell at columnindex and rowIndex

Specified by:

getValueAt in interface TableModel

Overrides:

getValueAt in class DefaultTableModel

Parameters:

rowIndex - the row index

columnIndex - the column index

Returns:

the value at the position

isCellEditable

public boolean isCellEditable(int rowIndex,
                              int columnIndex)

returns true if the cell at rowindex and columnindexis editable

Specified by:

isCellEditable in interface TableModel

Overrides:

isCellEditable in class DefaultTableModel

Parameters:

rowIndex - the index of the row

columnIndex - the index of the column

Returns:

true if the cell is editable

setValueAt

public void setValueAt(Object aValue,
                       int rowIndex,
                       int columnIndex)

sets the value in the cell at columnIndex and rowIndex to aValue. but only the value and the value can be changed

Specified by:

setValueAt in interface TableModel

Overrides:

setValueAt in class DefaultTableModel

Parameters:

aValue - the new value

rowIndex - the row index

columnIndex - the column index

setValueAt

public void setValueAt(Object aValue,
                       int rowIndex,
                       int columnIndex,
                       boolean notify)

sets the value in the cell at columnIndex and rowIndex to aValue. but only the value and the value can be changed

Parameters:

aValue - the new value

rowIndex - the row index

columnIndex - the column index

notify - whether to notify the listeners

addTableModelListener

public void addTableModelListener(TableModelListener l)

adds a listener to the list that is notified each time a change to data model occurs

Specified by:

addTableModelListener in interface TableModel

Overrides:

addTableModelListener in class AbstractTableModel

Parameters:

l - the listener to add

removeTableModelListener

public void removeTableModelListener(TableModelListener l)

removes a listener from the list that is notified each time a change to the data model occurs

Specified by:

removeTableModelListener in interface TableModel

Overrides:

removeTableModelListener in class AbstractTableModel

Parameters:

l - the listener to remove

notifyListener

public void notifyListener(TableModelEvent e)

notfies all listener of the change of the model

Parameters:

e - the event to send to the listeners

clearUndo

public void clearUndo()

removes the undo history

Specified by:

clearUndo in interface weka.core.Undoable

canUndo

public boolean canUndo()

returns whether an undo is possible, i.e. whether there are any undo points saved so far

Specified by:

canUndo in interface weka.core.Undoable

Returns:

returns TRUE if there is an undo possible

undo

public void undo()

undoes the last action

Specified by:

undo in interface weka.core.Undoable

addUndoPoint

public void addUndoPoint()

adds an undo point to the undo history, if the undo support is enabled

Specified by:

addUndoPoint in interface weka.core.Undoable

See Also:

isUndoEnabled(), setUndoEnabled(boolean)

setShowAttributeIndex

public void setShowAttributeIndex(boolean value)

Sets whether to display the attribute index in the header.

Parameters:

value - if true then the attribute indices are displayed in the table header

getShowAttributeIndex

public boolean getShowAttributeIndex()

Returns whether to display the attribute index in the header.

Returns:

true if the attribute indices are displayed in the table header