Package org.wildfly.plugin.tools

Class VersionComparator

java.lang.Object

org.wildfly.plugin.tools.VersionComparator

All Implemented Interfaces:

Comparator<String>

public class VersionComparator
extends Object
implements Comparator<String>

Compares two versions. The comparison is case-insensitive.

Some qualifiers map to other qualifiers. Below is a table of those mappings.

Qualifier	Mapping
GA	Final
a	Alpha
b	Beta
m	Milestone
cr	rc

Author:

James R. Perkins

Constructor Summary

Constructors

Constructor	Description
VersionComparator()	Creates a new version comparator.

Method Summary

Modifier and Type	Method	Description
int	compare(String o1, String o2)
static int	compareVersion(boolean ignoreSnapshots, String v1, String v2)	Compares the first version against the second version optionally ignoring if either version has a SNAPSHOT release extension.
static int	compareVersion(String v1, String v2)	Compares the first version against the second version.
static VersionComparator	getInstance()	Returns an instance of a version comparator.
static VersionComparator	getInstance(boolean ignoreSnapshots)	Returns an instance of a version comparator which optionally ignore the SNAPSHOT release extension.

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

VersionComparator

public VersionComparator()

Creates a new version comparator.

Method Detail

getInstance

public static VersionComparator getInstance()

Returns an instance of a version comparator.

Returns:

a version comparator instance

getInstance

public static VersionComparator getInstance(boolean ignoreSnapshots)

Returns an instance of a version comparator which optionally ignore the SNAPSHOT release extension. This can be useful for cases where you want to compare a version is at least a base version, not caring if it's a SNAPSHOT.

Parameters:

ignoreSnapshots - true to ignore the SNAPSHOT release extension, otherwise false which values a SNAPSHOT dependency less than a non-SNAPSHOT of the same version

Returns:

a version comparator instance

compareVersion

public static int compareVersion(String v1,
                                 String v2)

Compares the first version against the second version.

Parameters:

v1 - first version

v2 - second version

Returns:

0 if the versions are equal, -1 if version first version is less than the second version or 1 if the first version is greater than the second version

See Also:

Comparator.compare(Object, Object)

compareVersion

public static int compareVersion(boolean ignoreSnapshots,
                                 String v1,
                                 String v2)

Compares the first version against the second version optionally ignoring if either version has a SNAPSHOT release extension. This can be useful for cases where you want to compare a version is at least a base version, not caring if it's a SNAPSHOT.

If ignoreSnapshots is true, the version 1.0.0.Final and 1.0.0.Final-SNAPSHOT are said to be equal. If set to false, 1.0.0.Final is greater than 1.0.0.Final-SNAPSHOT.

Parameters:

ignoreSnapshots - true to ignore the SNAPSHOT release extension, otherwise false which values a SNAPSHOT dependency less than a non-SNAPSHOT of the same version

v1 - the first version

v2 - the second version

Returns:

0 if the versions are equal, -1 if version first version is less than the second version or 1 if the first version is greater than the second version

compare

public int compare(String o1,
                   String o2)

Specified by:

compare in interface Comparator<String>