Niclas Hedhman wrote: > On Fri, Mar 6, 2009 at 10:57 PM, Alex Shneyderman > <[email protected]> wrote: >> I am trying to develop a command line interface to my CRUD >> application. Command line is somewhat simple: cmd [param1 [param2]]. >> Commands are registered as composites in application layer and will >> talk directly to the domain layer. To lookup my command composites I >> wanted to identify them by cmd tokens in assembly, since looking them >> up by type is a bit awkward. >> >> Is there no way to do identifiedBy for composites? > > Rickard's suggestion is workable, but I think not a recommended pattern. > > You should create a Factory (as Service) in the application layer that > produces the instances that you are after. That will also hide the > 'ugliness' of Composite instance creation, and nicely communicate what > arguments are required at compile time, instead of runtime exception > when missing required arguments are missing.
And the implementation of the Factory could be as I outlined. /Rickard _______________________________________________ qi4j-dev mailing list [email protected] http://lists.ops4j.org/mailman/listinfo/qi4j-dev
