org.apache.cassandra.utils

Class CassandraVersion

java.lang.Object

org.apache.cassandra.utils.CassandraVersion

All Implemented Interfaces:

java.lang.Comparable<CassandraVersion>

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

Implements versioning used in Cassandra and CQL.

Note: The following code uses a slight variation from the semver document (http://semver.org).

Field Summary

Fields

Modifier and Type	Field and Description
int	major
int	minor
int	patch

Constructor Summary

Constructors

Constructor and Description
CassandraVersion(java.lang.String version) Parse a version from a string.

Method Summary

Modifier and Type	Method and Description
int	compareTo(CassandraVersion other)
boolean	equals(java.lang.Object o)
CassandraVersion	findSupportingVersion(CassandraVersion... 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	is30()
boolean	isSupportedBy(CassandraVersion 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

CassandraVersion

public CassandraVersion(java.lang.String version)

Parse a version from a string.

Parameters:

version - the string to parse

Throws:

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

Method Detail

compareTo

public int compareTo(CassandraVersion other)

Specified by:

compareTo in interface java.lang.Comparable<CassandraVersion>

is30

public boolean is30()

findSupportingVersion

public CassandraVersion findSupportingVersion(CassandraVersion... 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(CassandraVersion 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