Package net.sf.eBus.feed.historic

Class EHistoricSubscribeFeed.PastComparator

java.lang.Object

net.sf.eBus.feed.historic.EHistoricSubscribeFeed.PastComparator

All Implemented Interfaces:

Comparator<ENotificationMessage>

Enclosing class:

EHistoricSubscribeFeed

public static final class EHistoricSubscribeFeed.PastComparator
extends Object
implements Comparator<ENotificationMessage>

Comparator used to sort historic notification messages by timestamp, publisher identifier, and message position.

Constructor Summary

Constructors

Constructor	Description
PastComparator()

Method Summary

Modifier and Type	Method	Description
int	compare(ENotificationMessage o1, ENotificationMessage o2)	Compares two eBus notification messages for order.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

PastComparator

public PastComparator()

Method Detail

compare

public int compare(ENotificationMessage o1,
                   ENotificationMessage o2)

Compares two eBus notification messages for order. Returns an integer values <, equal to, or > zero if the first argument is <, equal to, or > the second argument. Comparison is based on the following notification properties:

1. message timestamp,
2. publisher identifier, and
3. message position.

Publisher identifiers are compared only if timestamps are equal. Message positions are compared only if timestamps and publisher identifiers are equal.

Specified by:

compare in interface Comparator<ENotificationMessage>

Parameters:

o1 - first notification message to be compared.

o2 - second notification message to be compared.

Returns:

an integer value <, equal to, or > zero if first argument is <, equal to, or > second argument.