com.numericalmethod.suanshu.interval

Class Interval<T extends java.lang.Comparable<? super T>>

java.lang.Object

com.numericalmethod.suanshu.interval.Interval<T>

Type Parameters:

T - a class that implements Comparable; hence a partially ordered set

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

RealInterval, TimeInterval

public class Interval<T extends java.lang.Comparable<? super T>>
extends java.lang.Object
implements java.io.Serializable

For a partially ordered set, there is a binary relation, denoted as ≤, that indicates that, for certain pairs of elements in the set, one of the elements precedes the other. An interval is defined as follows. For a ≤ b, an interval [a,b] is the set of elements x satisfying a ≤ x ≤ b (i.e. a ≤ x and x ≤ b). It contains at least the elements a and b.

An Interval is immutable.

See Also:

Wikipedia: Interval, Serialized Form

Constructor Summary

Constructors

Constructor and Description
Interval(T begin, T end) Construct an interval.

Method Summary

Modifier and Type	Method and Description
T	begin() Get the beginning of this interval.
T	end() Get the end of this interval.
boolean	equals(java.lang.Object obj)
int	hashCode()
boolean	is(IntervalRelation relation, Interval<T> Y) Check whether this and Y satisfies a certain Allen's interval relation.
java.util.Set<IntervalRelation>	relations(Interval<T> Y) Determine the interval relations between this and Y.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Interval

public Interval(T begin,
                T end)

Construct an interval.

Parameters:

begin - the beginning of this interval

end - the end of this interval

Method Detail

begin

public T begin()

Get the beginning of this interval.

Returns:

the beginning of this interval

end

public T end()

Get the end of this interval.

Returns:

the end of this interval

relations

public java.util.Set<IntervalRelation> relations(Interval<T> Y)

Determine the interval relations between this and Y.

Parameters:

Y - an interval

Returns:

the set of satisfied relations

is

public boolean is(IntervalRelation relation,
                  Interval<T> Y)

Check whether this and Y satisfies a certain Allen's interval relation.

Parameters:

relation - an IntervalRelation

Y - an interval

Returns:

true if this and Y satisfies relation

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object