ilog.views.chart.datax.flat.table

Interface IlvComputedColumnInfo

All Superinterfaces:

Cloneable, IlvDataColumnInfo, IlvStaticColumnInfo

public interface IlvComputedColumnInfo
extends IlvDataColumnInfo

This interface describes a table column whose value for each row can be computed from other column's values.

Since:

JViews 7.5

Method Summary

Modifier and Type	Method and Description
double	computeDoubleAt(IlvFlatTableModel model, int rowIndex) Returns the value for the cell at rowIndex, as a numeric value.
Object	computeValueAt(IlvFlatTableModel model, int rowIndex) Returns the value for the cell at rowIndex.

Methods inherited from interface ilog.views.chart.datax.IlvDataColumnInfo

addDataColumnListener, getEmptyValue, getEnumValues, getMaxValue, getMinValue, isEnumerated, removeDataColumnListener

Methods inherited from interface ilog.views.chart.datax.IlvStaticColumnInfo

clone, getName, getType

Method Detail

computeValueAt

Object computeValueAt(IlvFlatTableModel model,
                      int rowIndex)

Returns the value for the cell at rowIndex.

computeDoubleAt

double computeDoubleAt(IlvFlatTableModel model,
                       int rowIndex)

Returns the value for the cell at rowIndex, as a numeric value.

This method should only be used for columns whose type is Double. For other types of columns, this method will do a conversion from the object returned by getValueAt, which may be inefficient or inaccurate or raise exceptions.