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Bullard, Claude L (Len) wrote:
> Cohesion and coupling:
...
> and of course, the ultimate expression of homophilic principles, the Law of
> Demeter:
> "Only talk to your friends." For programmers, there are lots of articles on
> this one.
>
> http://www.cmcrossroads.com/bradapp/docs/demeter-intro.html
I am having trouble applying OO to XML, but I read this from the above
article:
"The Law of Demeter says that if I need to request a service of an
objects sub-part, I should instead make the request of the object itself
and let it propagate this request to all relevant sub-parts, thus the
object is responsible for knowing its internal make-up instead of the
method that uses it."
To me, if I have a nested structure in an XML instance and using XSL on
that I apply-templates (flow through the instance doc) and only do what
is in the XML. If I come across something that is a reference to
something else I can go out, get it, apply-templates on it and continue
where I left off.
If I have a flat structure in an instance doc I have to assume where
things go and place them in a more rigid way.
Am I just not getting it?
-Rob
>
> len
>
>
>
>
>
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