Package pro.taskana.common.internal.util

Class ComparableVersion

java.lang.Object
pro.taskana.common.internal.util.ComparableVersion
All Implemented Interfaces:
Comparable<ComparableVersion>
public class ComparableVersion extends Object implements Comparable<ComparableVersion>
Generic implementation of version comparison. Features:
  • mixing of '-' (hyphen) and '.' (dot) separators,
  • transition between characters and digits also constitutes a separator: 1.0alpha1 => [1, 0, alpha, 1]
  • unlimited number of version components,
  • version components in the text can be digits or strings,
  • strings are checked for well-known qualifiers and the qualifier ordering is used for version ordering. Well-known qualifiers (case insensitive) are:
    • alpha or a
    • beta or b
    • milestone or m
    • rc or cr
    • snapshot
    • (the empty string) or ga or final
    • sp
    Unknown qualifiers are considered after known qualifiers, with lexical order (always case insensitive),
  • a hyphen usually precedes a qualifier, and is always less important than something preceded with a dot.
Author:
Kenney Westerhof, Hervé Boutemy
See Also: