com.redhat.rhn.common.util

Class RpmVersionComparator

java.lang.Object

com.redhat.rhn.common.util.RpmVersionComparator

All Implemented Interfaces:

java.util.Comparator

public class RpmVersionComparator
extends java.lang.Object
implements java.util.Comparator

Implement the rpmvercmp function provided by librpm in Java. The comparator operates on two strings that represent an RPM version or release.

This comparator is not perfectly antysymmetric for unequal versions, but close enough to warrant being a comparator. For examples of asymmetry, check the test.

Constructor Summary

Constructors

Constructor and Description
RpmVersionComparator()

Method Summary

Modifier and Type	Method and Description
int	compare(java.lang.Object o1, java.lang.Object o2)

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

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

RpmVersionComparator

public RpmVersionComparator()

Method Detail

compare

public int compare(java.lang.Object o1,
                   java.lang.Object o2)

Specified by:

compare in interface java.util.Comparator