infovis.column
Class FunctionColumn

java.lang.Object
  infovis.utils.ChangeManager
      infovis.column.AbstractColumn
          infovis.column.BasicColumn
              infovis.column.LiteralColumn
                  infovis.column.DoubleColumn
                      infovis.column.FunctionColumn

All Implemented Interfaces:

IntComparator, Column, NumberColumn, Metadata, Constants, RowComparator, Serializable, EventListener, ChangeListener

public class FunctionColumn
extends DoubleColumn
implements ChangeListener

Applies a unary function to a column and maintains the result into this column.

Version:

$Revision: 1.4 $

Author:

Jean-Daniel Fekete

See Also:

Serialized Form

Field Summary

Fields inherited from class infovis.column.AbstractColumn

MODIFIED_ALL, MODIFIED_NONE

Fields inherited from interface infovis.metadata.Constants

CONTRIBUTOR, COVERAGE, CREATOR, DATE, DESCRITION, FORMAT, IDENTIFIER, LANGUAGE, PUBLISHER, RELATION, RIGHTS, SOURCE, SUBJECT, TITLE, TYPE

Constructor Summary

FunctionColumn(NumberColumn col, DoubleFunction fn)
Create a FunctionColumn from a NumberColumn and a DoubleFunction.

Method Summary

void	stateChanged(ChangeEvent e)
void	update() Recompute the new values when the initial column has been modified.

Methods inherited from class infovis.column.DoubleColumn

add, addExtend, capacity, clear, ensureCapacity, fill, findColumn, format, get, getColumn, getColumn, getDoubleAt, getIntAt, getLongAt, getMax, getMin, getValueAt, getValueClass, getValueReference, parse, round, set, setDoubleAt, setExtend, setSize, setValueAt, size, toArray, toArray

Methods inherited from class infovis.column.LiteralColumn

compare, compareValues, getDoubleMax, getDoubleMin, getFloatAt, getNumberColumn, hasUndefinedValue, isValueUndefined, setFloatAt, setIntAt, setLongAt, setValueUndefined, trimUndefined

Methods inherited from class infovis.column.BasicColumn

addValue, addValueOrNull, firstValidRow, getClientProperty, getFormat, getMaxIndex, getMetadata, getMinIndex, getName, isEmpty, isInternal, iterator, lastValidRow, setFormat, setName, setValueOrNullAt, toString

Methods inherited from class infovis.column.AbstractColumn

addChangeListener, computeValueMap, computeValueMap, equalObj, equals, getLastModifiedRow

Methods inherited from class infovis.utils.ChangeManager

disableNotify, enableNotify, getModCount, removeChangeListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface infovis.Column

addChangeListener, addValue, addValueOrNull, disableNotify, enableNotify, getFormat, getMaxIndex, getMinIndex, getName, isEmpty, isInternal, iterator, removeChangeListener, setFormat, setName, setValueOrNullAt

Methods inherited from interface infovis.Metadata

getClientProperty, getMetadata

Methods inherited from interface cern.colt.function.IntComparator

equals

Constructor Detail

FunctionColumn

public FunctionColumn(NumberColumn col,
                      DoubleFunction fn)

Create a FunctionColumn from a NumberColumn and a DoubleFunction.

Parameters:

col - the NumberColumn

fn - the DoubleFunction

Method Detail

stateChanged

public void stateChanged(ChangeEvent e)

Specified by:

stateChanged in interface ChangeListener

update

public void update()

Recompute the new values when the initial column has been modified.