ilog.views.chart.datax.operator

Class IlvMaxOperator

java.lang.Object

ilog.views.chart.datax.operator.IlvAbstractOperator

ilog.views.chart.datax.operator.IlvCommutativeAssociativeOperator

ilog.views.chart.datax.operator.IlvMaxOperator

All Implemented Interfaces:

IlvOperator

public class IlvMaxOperator
extends IlvCommutativeAssociativeOperator

This class implements the maximum operator. It computes the maximum of the values in a model column or, in a tree model, of a branch of a column.

Since:

JViews 7.5

Constructor Summary

Constructors

Constructor and Description
IlvMaxOperator() Creates a new instance of this maximizing operator.

Method Summary

Modifier and Type	Method and Description
void	attach(IlvModelWithColumns model, IlvDataColumnInfo column, Comparator comparator) Attaches this operator to a given model and column.
void	attach(IlvTreeModelWithColumns model, TreePath branchRootPath, IlvDataColumnInfo column, Comparator comparator) Attaches this operator to a given tree model branch and column.
protected Object	combine(Object value1, Object value2) Returns the value of the operator, when applied to two operator results.
void	detach() Detaches this operator from its model and thus deactivates it.
protected boolean	equalValues(Object value1, Object value2) Returns true if two values are to be considered the same.
protected Object	identity(Object value) Returns the value of the operator, when applied to a single argument.
protected Object	neutralValue() Returns the value of the operator, when applied to zero arguments.

Methods inherited from class ilog.views.chart.datax.operator.IlvCommutativeAssociativeOperator

attach, attach, getOperatorValue

Methods inherited from class ilog.views.chart.datax.operator.IlvAbstractOperator

addOperatorListener, fireEvent, removeOperatorListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface ilog.views.chart.datax.operator.IlvOperator

addOperatorListener, removeOperatorListener

Constructor Detail

IlvMaxOperator

public IlvMaxOperator()

Creates a new instance of this maximizing operator.

See Also:

attach(IlvModelWithColumns, IlvDataColumnInfo, Comparator), attach(IlvTreeModelWithColumns, TreePath, IlvDataColumnInfo, Comparator)

Method Detail

neutralValue

protected Object neutralValue()

Returns the value of the operator, when applied to zero arguments.

Specified by:

neutralValue in class IlvCommutativeAssociativeOperator

identity

protected Object identity(Object value)

Returns the value of the operator, when applied to a single argument.

Specified by:

identity in class IlvCommutativeAssociativeOperator

combine

protected Object combine(Object value1,
                         Object value2)

Returns the value of the operator, when applied to two operator results.

Specified by:

combine in class IlvCommutativeAssociativeOperator

equalValues

protected boolean equalValues(Object value1,
                              Object value2)

Returns true if two values are to be considered the same.

Specified by:

equalValues in class IlvCommutativeAssociativeOperator

attach

public void attach(IlvModelWithColumns model,
                   IlvDataColumnInfo column,
                   Comparator comparator)

Attaches this operator to a given model and column.

Parameters:

model - The model containing the column values.

column - The column whose values shall be used.

comparator - The comparator for comparing column values, or null which denotes a default comparator.

attach

public void attach(IlvTreeModelWithColumns model,
                   TreePath branchRootPath,
                   IlvDataColumnInfo column,
                   Comparator comparator)

Attaches this operator to a given tree model branch and column.

Parameters:

model - The model containing the column values.

branchRootPath - The tree path from the root of the model to the root of the branch onto which to limit the scope of the operation. The branch root must stay in the model as long as this operator is attached.

column - The column whose values shall be used.

comparator - The comparator for comparing column values, or null which denotes a default comparator.

detach

public void detach()

Detaches this operator from its model and thus deactivates it.

Specified by:

detach in interface IlvOperator

Overrides:

detach in class IlvCommutativeAssociativeOperator