Integrity in the Hands of the Client
markb at iosphere.net
Fri Nov 21 18:38:43 GMT 1997
On Fri, 21 Nov 1997, Howard Katz wrote:
> Mark, would you mind expanding just a bit on the following paragraph?
Of course not.
> I'm not seeing what your point is:
> BTW, this is the same reason that a stream of serialized-to-XML
> objects won't have a DTD. The structure of a set of objects is
> guaranteed to be known at runtime. But these streams will still
Picture a container Bean (i.e. the GlasgowSpec - a BeanContext). When
you design that container, you only know that it will hold other Beans -
not necessarily which other Beans. Your container may publish services
for use by contained Beans. It might, and likely will, contain Beans that
were developed after it was developed. Some of those Beans might also be
Now, imagine serializing that container at runtime. Can you tell me its
structure *now* (I mean *right* now, as you're reading this - aka design
time)? If not, then you can't use a DTD. The stream itself will be
responsible for describing the structure implicitly, not some separate
Isn't this what well-formed XML documents were meant to address? That
you could still create self-describing documents even when you didn't
know the structure a priori? Based on some of the discussions I've read
on the list archives, I do get the impression that this capability of
XML isn't being used to its fullest potential.
Mark Baker, Ottawa Ontario CANADA. Java, CORBA, XML, Beans
http://www.iosphere.net/~markb distobj at acm.org ICQ:5100069
Will distribute business objects for food.
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