Class GenericVersionScheme

  • All Implemented Interfaces:
    VersionScheme

    public final class GenericVersionScheme
    extends java.lang.Object
    implements VersionScheme
    A version scheme using a generic version syntax and common sense sorting.

    This scheme accepts versions of any form, interpreting a version as a sequence of numeric and alphabetic segments. The characters '-', '_', and '.' as well as the mere transitions from digit to letter and vice versa delimit the version segments. Delimiters are treated as equivalent.

    Numeric segments are compared mathematically, alphabetic segments are compared lexicographically and case-insensitively. However, the following qualifier strings are recognized and treated specially: "alpha" = "a" < "beta" = "b" < "milestone" = "m" < "cr" = "rc" < "snapshot" < "final" = "ga" < "sp". All of those well-known qualifiers are considered smaller/older than other strings. An empty segment/string is equivalent to 0.

    In addition to the above mentioned qualifiers, the tokens "min" and "max" may be used as final version segment to denote the smallest/greatest version having a given prefix. For example, "1.2.min" denotes the smallest version in the 1.2 line, "1.2.max" denotes the greatest version in the 1.2 line. A version range of the form "[M.N.*]" is short for "[M.N.min, M.N.max]".

    Numbers and strings are considered incomparable against each other. Where version segments of different kind would collide, comparison will instead assume that the previous segments are padded with trailing 0 or "ga" segments, respectively, until the kind mismatch is resolved, e.g. "1-alpha" = "1.0.0-alpha" < "1.0.1-ga" = "1.0.1".

    • Constructor Summary

      Constructors 
      Constructor Description
      GenericVersionScheme()
      Creates a new instance of the version scheme for parsing versions.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean equals​(java.lang.Object obj)  
      int hashCode()  
      Version parseVersion​(java.lang.String version)
      Parses the specified version string, for example "1.0".
      VersionConstraint parseVersionConstraint​(java.lang.String constraint)
      Parses the specified version constraint specification, for example "1.0" or "[1.0,2.0),(2.0,)".
      VersionRange parseVersionRange​(java.lang.String range)
      Parses the specified version range specification, for example "[1.0,2.0)".
      • Methods inherited from class java.lang.Object

        clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • GenericVersionScheme

        public GenericVersionScheme()
        Creates a new instance of the version scheme for parsing versions.