com.jidesoft.range
Class CombinedNumericRange

java.lang.Object
  com.jidesoft.range.AbstractRange<T>
      com.jidesoft.range.AbstractNumericRange<Double>
          com.jidesoft.range.CombinedNumericRange

All Implemented Interfaces:

Range<Double>

public class CombinedNumericRange
extends AbstractNumericRange<Double>

A little convenience class to compute the maximum and minimum values of multiple ranges.

Author:

swhite@catalysoft.com

Field Summary

Fields inherited from interface com.jidesoft.range.Range

PROPERTY_MAX, PROPERTY_MIN

Constructor Summary

CombinedNumericRange()
Using this constructor relies on the user subsequently calling add() to add a range

Method Summary

CombinedNumericRange	add(Range<Double> range) Add a new range to this combined range.
void	adjust(Double lower, Double upper) Calls to this method throw an UnsupportedOprationException.
boolean	contains(Double x) This range contains some point iff one or more of its sub-ranges contain that point
Range<Double>	createIntermediate(Range<Double> targetRange, double position)
NumericRange	getRange(double leadingMarginProportion, double trailingMarginProportion) Returns a new numeric range that is based on this range, but with a margin introduced at each end.
Double	lower() The lower value in the range; here, the same as minimum
double	maximum() Lazily calculates the maximum value in the range
double	minimum() Lazily calculates the minimum value in the range
int	rangeCount() Returns the number of sub-ranges contained by this range
double	size() The size of the range is computed as the maximum minus the minimum value.
String	toString()
Double	upper() The upper value in the range; here, the same as maximum()

Methods inherited from class com.jidesoft.range.AbstractRange

addPropertyChangeListener, copy, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, removePropertyChangeListener

Methods inherited from class java.lang.Object

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

Constructor Detail

CombinedNumericRange

public CombinedNumericRange()

Using this constructor relies on the user subsequently calling add() to add a range

Method Detail

add

public CombinedNumericRange add(Range<Double> range)

Add a new range to this combined range. Notice the method returns this instance, so method calls can be chained together. If you pass null to this method the CombinedNumericRange remains unchanged; an Exception is NOT thrown.

Parameters:

range - the new range to add

Returns:

this instance

lower

public Double lower()

The lower value in the range; here, the same as minimum

Returns:

the smallest value of the range

upper

public Double upper()

The upper value in the range; here, the same as maximum()

Returns:

the largest value of the range

rangeCount

public int rangeCount()

Returns the number of sub-ranges contained by this range

Returns:

the number of sub-ranges in this range

adjust

public void adjust(Double lower,
                   Double upper)

Calls to this method throw an UnsupportedOprationException. The idea is that in the case of this class we don't want to be able to mess with the lower and upper bounds as they are computed from the supplied range values. If the class needed to recompute the lower and upper bounds any previous adjustment that had been made through this method would have been lost.

Parameters:

lower - the new smallest value of the range

upper - the new largest value of the range

Throws:

UnsupportedOperationException

maximum

public double maximum()

Lazily calculates the maximum value in the range

Returns:

The numeric value of the largest value to include in the range.

minimum

public double minimum()

Lazily calculates the minimum value in the range

Returns:

the numeric value of the smallest value to include in the range.

contains

public boolean contains(Double x)

This range contains some point iff one or more of its sub-ranges contain that point

Returns:

a boolean to indicate whether the supplied point lies within the range

size

public double size()

The size of the range is computed as the maximum minus the minimum value.

getRange

public NumericRange getRange(double leadingMarginProportion,
                             double trailingMarginProportion)

Returns a new numeric range that is based on this range, but with a margin introduced at each end. The margin proportion is a value between 0 and 1. For example to add a 20% margin to each end use parameters of 0.2 for both the leading and trailing margin proportion.

Parameters:

leadingMarginProportion - how much margin to add at the low end of the range

trailingMarginProportion - how much margin to add at the top end of the range

Returns:

a new NumericRange object with margins added

createIntermediate

public Range<Double> createIntermediate(Range<Double> targetRange,
                                        double position)

Specified by:

createIntermediate in class AbstractRange<Double>

toString

public String toString()

Overrides:

toString in class Object