- From: Romain Deltour <rdeltour@gmail.com>
- Date: Tue, 6 Sep 2011 11:12:02 +0200
- To: Florent Georges <fgeorges@fgeorges.org>
- Cc: XProc Dev <xproc-dev@w3.org>
> but rather a way > to extend the extension mechanism itself by overriding the only > places it is used from (I guess you overrided isStepAvailable() > as well). Exactly :) Basically our subclass does: XProcStep xprocStep = registry.getStep(type,runtime,step); return (xprocStep != null) ? xprocStep : super.newStep(runtime,step); We totally ignore the "implementations" Map of class names in our overridden extension mechanism. Romain. Le 6 sept. 11 à 10:54, Florent Georges a écrit : > On 6 September 2011 09:28, Romain Deltour wrote: > > Hi Romain, > >> There is now a new API in XProcConfiguration with a >> newStep(XProcRuntime, XAtomicStep) method that can be >> overridden by a subclass to extend the step registration >> mechanism. > > Thanks. But from what I see, that's not what I understand this > method does. I'd see it rather instantiates an implementation, > corresponding to a step (in particular its type name). It gets > the step's type name, looks up in the extension steps map, and > instantiates the class if one is found. > > And I don't how a subclass can override this method to add > anything in the implementations map, given it is... public? Oh, > wait a minute, is this field public? Well, ahem, I don't really > need a new method, then :-/ > > And now that I already wrote my response, I only understand > what you mean. You don't mean that overriding the method is a > way to add a binding to the implementations map, but rather a way > to extend the extension mechanism itself by overriding the only > places it is used from (I guess you overrided isStepAvailable() > as well). > > Interesting, e.g. to experiment with a new extension mechanism > (based on an ExtensionStep class, providing all infos directly > from Java, a bit like the extension functions in Saxon 9.2+), and > that directly from the user space :-) > > Thanks for your ideas! > > Regards, > > -- > Florent Georges > http://fgeorges.org/ > http://h2oconsulting.be/
Received on Tuesday, 6 September 2011 09:12:36 UTC