ostore.introspect
Interface Time

All Superinterfaces:

Comparable, QuickSerializable

All Known Implementing Classes:

SimpleRealTime, Time.NeverTime

public interface Time

extends Comparable, QuickSerializable

A component representing a particular moment in time (either logical or physical, or some other metric). We must be able to compute the distance between two time values and determine whether one was before or after another.

IMPORTANT: implementing classes should be correctly handle comparison to the NeverTime time.

Version:

$Id: Time.java,v 1.2 2003/03/15 01:35:39 jeffpang Exp $

Author:

Jeff Pang

Nested Class Summary

static class

Time.NeverTime Time that is before all other time.

Field Summary

static Time

NEVER A special value that indicates a time infinitely in the past.

Method Summary

Distance

difference(Time to) Distance from this Time to to time.

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface ostore.util.QuickSerializable

serialize

Field Detail

NEVER

public static final Time NEVER

A special value that indicates a time infinitely in the past.

Method Detail

difference

public Distance difference(Time to)

Distance from this Time to to time.

Parameters:

to - next time

Returns:

|to - this| distance