com.jstatcom.model
Class NumberRangeTypes

java.lang.Object
  com.jstatcom.model.NumberRangeTypes

public class NumberRangeTypes
extends java.lang.Object

This class contains an enumeration of constants that define different types of number ranges.

It implements the typesave enum pattern (Joshua Bloch, "Effective Java", Item 21). If you compare NumberRangeTypes, always use the == operator. This is save, because they are Singletons (Gamma et al., 1995).

Author:

Markus Kraetzig

Field Summary

static NumberRangeTypes	CLOSED Type for closed interval.
static NumberRangeTypes	LEFT_OPEN Type for left-open interval.
java.lang.String	leftBracket "(" (not inclusive) or "[" (inclusive).
boolean	leftOpen Whether lower bound is open.
static NumberRangeTypes	OPEN Type for open interval.
static NumberRangeTypes	RIGHT_OPEN Type for right-open interval.
java.lang.String	rightBracket ")" (not inclusive) or "]" (inclusive).
boolean	rightOpen Whether upper bound is open.

Method Summary

static NumberRangeTypes	getTypeForBounds(boolean leftOpen, boolean rightOpen) Gets the appropriate range type according to the specification of the bounds openess.
boolean	isLeftOpen() Gets whether left bound is open.
boolean	isRightOpen() Gets whether right bound is open.
java.lang.String	leftBracket() Gets the strimg for the left bracket.
java.lang.String	name() Returns the name of the type.
java.lang.String	rightBracket() Gets the strimg for the right bracket.
java.lang.String	toString() Returns a string representation of the type, do not use for comparisons.

Methods inherited from class java.lang.Object

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

Field Detail

leftBracket

public final java.lang.String leftBracket

"(" (not inclusive) or "[" (inclusive).

rightBracket

public final java.lang.String rightBracket

")" (not inclusive) or "]" (inclusive).

leftOpen

public final boolean leftOpen

Whether lower bound is open.

rightOpen

public final boolean rightOpen

Whether upper bound is open.

CLOSED

public static final NumberRangeTypes CLOSED

Type for closed interval.

OPEN

public static final NumberRangeTypes OPEN

Type for open interval.

LEFT_OPEN

public static final NumberRangeTypes LEFT_OPEN

Type for left-open interval.

RIGHT_OPEN

public static final NumberRangeTypes RIGHT_OPEN

Type for right-open interval.

Method Detail

leftBracket

public final java.lang.String leftBracket()

Gets the strimg for the left bracket.

Returns:

"(" or "["

name

public final java.lang.String name()

Returns the name of the type. Do not use for comparisons, but compare by reference.

Returns:

name of this type

rightBracket

public final java.lang.String rightBracket()

Gets the strimg for the right bracket.

Returns:

")" or "]"

getTypeForBounds

public static final NumberRangeTypes getTypeForBounds(boolean leftOpen,
                                                      boolean rightOpen)

Gets the appropriate range type according to the specification of the bounds openess.

Parameters:

leftOpen - whether lower bound is open

rightOpen - whether upper bound is open

Returns:

number range type

isLeftOpen

public final boolean isLeftOpen()

Gets whether left bound is open.

Returns:

true if left bound is open

isRightOpen

public final boolean isRightOpen()

Gets whether right bound is open.

Returns:

true if right bound is open

toString

public final java.lang.String toString()

Returns a string representation of the type, do not use for comparisons.

Overrides:

toString in class java.lang.Object

Returns:

string representing this type