Hello Ate, 2015-12-09 10:15 GMT+01:00 Ate Douma <a...@douma.nu>:
> Since early this year the progress and development of Commons SCXML 2.0 has > severely declined because of two major technical hurdles, and thereafter of > both motivation and lack of time: > > - The SCXML XML/XPath datamodel support has been dropped from the final > W3C SCXML 1.0 specification [1], because of too many functional and > semantic > complications and limitation, as well as lack of interest for implementing > it. > > The implementation of the XML/XPath datamodel in Commons SCXML has been > problematic for precisely the same reasons. > And not being able to provide such implementation properly by us (Commons > SCXML) actually has been one (final) argument for dropping it from the > specification... > > - The implementation of the Javascript datamodel support based on the > old/outdated Rhino Javascript engine in Java 7 and below, turned out to be > quite difficult. While it turns out to be much easier and reliable, but > different, with the new Nashorn Javascript engine in Java 8+. > > After bringing this first up on the user@ list earlier this week, I now > want to > propose the following major changes to revive the further development > towards > Commons SCXML 2.0: > - drop the support for XML/XPath based datamodel, and instead introduce a > much > easier to implement and support JSON datamodel as alternative, for all > current > Commons SCXML support 'languages': JEXL, Groovy and Javascript. > - bump the minimum Java version to 8 so we can leverage and only need to > support > the Nashorn Javascript engine > > The only user response so far on user@ is fully in favor of these changes, > and both myself and Woonsan Ko are motivated to continue developing and > completing the goals for Commons SCXML 2.0 based on these changes. > > If nobody here has strong arguments against the above proposal (and > assuming > lazy consensus otherwise), we would like to start on these changes shortly, > before the end of the year. > I'm all for upgrading to Java 8 if it eases the development of Commons SCXML. Go for it. Regards, Benedikt > > Kind regards, > Ate Douma > Woonsan Ko > > [1] http://www.w3.org/TR/2015/REC-scxml-20150901/ > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org > For additional commands, e-mail: dev-h...@commons.apache.org > > -- http://people.apache.org/~britter/ http://www.systemoutprintln.de/ http://twitter.com/BenediktRitter http://github.com/britter
