org.apache.cassandra.utils
Class SemanticVersion

java.lang.Object
  org.apache.cassandra.utils.SemanticVersion

All Implemented Interfaces:

java.lang.Comparable<SemanticVersion>

public class SemanticVersion
extends java.lang.Object
implements java.lang.Comparable<SemanticVersion>

Implements semantic versioning as defined at http://semver.org/. Note: The following code uses a slight variation from the document above in that it doesn't allow dashes in pre-release and build identifier.

Field Summary

int	major
int	minor
int	patch

Constructor Summary

SemanticVersion(java.lang.String version)
Parse a semantic version from a string.

Method Summary

int	compareTo(SemanticVersion other)
boolean	equals(java.lang.Object o)
SemanticVersion	findSupportingVersion(SemanticVersion... versions) Returns a version that is backward compatible with this version amongst a list of provided version, or null if none can be found.
int	hashCode()
boolean	isSupportedBy(SemanticVersion version)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

major

public final int major

minor

public final int minor

patch

public final int patch

Constructor Detail

SemanticVersion

public SemanticVersion(java.lang.String version)

Parse a semantic version from a string.

Parameters:

version - the string to parse

Throws:

java.lang.IllegalArgumentException - if the provided string does not represent a semantic version

Method Detail

compareTo

public int compareTo(SemanticVersion other)

Specified by:

compareTo in interface java.lang.Comparable<SemanticVersion>

findSupportingVersion

public SemanticVersion findSupportingVersion(SemanticVersion... versions)

Returns a version that is backward compatible with this version amongst a list of provided version, or null if none can be found. For instance: "2.0.0".findSupportingVersion("2.0.0", "3.0.0") == "2.0.0" "2.0.0".findSupportingVersion("2.1.3", "3.0.0") == "2.1.3" "2.0.0".findSupportingVersion("3.0.0") == null "2.0.3".findSupportingVersion("2.0.0") == "2.0.0" "2.1.0".findSupportingVersion("2.0.0") == null

isSupportedBy

public boolean isSupportedBy(SemanticVersion version)

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object