Class ChronologyAlgebras

java.lang.Object

org.episteme.social.history.clock.ChronologyAlgebras

public final class ChronologyAlgebras
extends Object

Defines various algebras over temporal structures. Allen's Interval Algebra and other qualitative time logic systems.

Author:

Silvere Martin-Michiellot, Gemini AI (Google DeepMind)

Method Summary

Modifier and Type	Method	Description
static String	allenRelation(TimeInterval a, TimeInterval b)	Determines the Allen relation between two intervals.
static long	toMillis(Object temporal)	Converts various temporal objects to epoch milliseconds.

Methods inherited from class Object

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

Method Details

allenRelation

public static String allenRelation(TimeInterval a,
 TimeInterval b)

Determines the Allen relation between two intervals. Possible relations: equal, before, after, meets, met-by, overlaps, overlapped-by, starts, started-by, finishes, finished-by, during, contains.

Parameters:

a - first interval

b - second interval

Returns:

the Allen relation string

toMillis

public static long toMillis(Object temporal)

Converts various temporal objects to epoch milliseconds.

Parameters:

temporal - the temporal object (LocalDate, Instant, Date, etc.)

Returns:

milliseconds since Unix Epoch

Throws:

NullPointerException - if temporal is null

IllegalArgumentException - if the type is not supported