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org.apache.myfaces.trinidad.util
Class Range<C extends Comparable>

java.lang.Object
org.apache.myfaces.trinidad.util.Range<C>

public final class Range<C extends Comparable>

extends Object

Represents a range of comparable values with a specific start and end. Range instances are constructed using the of() factory method. Range instances are immutable.

Method Summary

boolean	contains(C value) Tests whether the specified value is contained within this range.
static <C extends Comparable> Range<C>	emptyRange() Returns an empty range.
boolean	equals(Object o)
C	getEnd() Returns the end of the range.
C	getStart() Returns the start of the range.
int	hashCode()
Range<C>	intersect(Range<C> otherRange) Computes the intersection of the this range with another range and returns the result in a new Range.
boolean	isEmpty() Tests whether this range is empty.
static <C extends Comparable> Range<C>	of(C start, C end) Returns a new range consisting of the specified start and end points.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

of

public static <C extends Comparable> Range<C> of(C start,
                                                 C end)

Returns a new range consisting of the specified start and end points. If start > end, an empty range is returned.

Throws:

IllegalArgumentException - if start or end is null

emptyRange

public static <C extends Comparable> Range<C> emptyRange()

Returns an empty range.

getStart

public C getStart()

Returns the start of the range.

getEnd

public C getEnd()

Returns the end of the range.

isEmpty

public boolean isEmpty()

Tests whether this range is empty.

Returns:

true if empty, false otherwise

contains

public boolean contains(C value)

Tests whether the specified value is contained within this range.

Parameters:

value - the value to test

Returns:

true if the value is within this range, false otherwise.

intersect

public Range<C> intersect(Range<C> otherRange)

Computes the intersection of the this range with another range and returns the result in a new Range. If there is no intersection between the two ranges, the empty range (EMPTY_RANGE) is returned.

Parameters:

otherRange - the (non-null) range to intersect/update

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

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