XML usage in OPC

[MURATA Makoto]

We can even drop the first two bullets.  The first one disallows
non-Unicode encodings,
while the second disallows the use of DTDs.  Although I understand the
desire to
disallow them, is OPC the right place for introducing such rules?  I do not
believe
that OPC processing is hampered by them.

Regards,
Makoto


2014-09-15 7:02 GMT+09:00 MURATA Makoto <eb2m-mrt at asahi-net.or.jp>:

> Folks,
>
> There are five bullets in "XML Usage" in 29500-2.  The
> last three are questionable.
>
> The third bullet makes the MCE processing mandatory.  I
> am not sure if it is a good idea.  Why should OPC force
> the use of MCE?
>
> > If the XML content contains the Markup Compatibility
> > namespace, as described in Part 3, it shall be
> > processed by the package implementer to remove Markup
> > Compatibility elements and attributes, ignorable
> > namespace declarations, and ignored elements and
> > attributes before applying subsequent validation
> > rules. [M1.19]
>
> The fourth bullet mandates validaity against "the
> corresponding XSD schema defined in this Open Packaging
> specification".  This appears to disallow the use of
> XSDs defined in Part 1!  What is more, XSD-less
> documents (e.g, RDF) are disallowed.  I do not think
> that this makes sense.
>
> > XML content shall be valid against the corresponding
> > XSD schema defined in this Open Packaging
> > specification. In particular, the XML content shall
> > not contain elements or attributes drawn from
> > namespaces that are not explicitly defined in the
> > corresponding XSD unless the XSD allows elements or
> > attributes drawn from any namespace to be present in
> > particular locations in the XML markup. Package
> > implementers shall enforce this requirement upon
> > creation and retrieval of the XML content. [M1.20]
>
> The last bullet disallows the use of the prefix "xml"
> and "xsi" unless the XSD schema for the XML content
> explicitly allows them.  Thus, XSD-less XML contents
> cannot use them.
>
> > XML content shall not contain elements or attributes
> > drawn from “xml” or “xsi” namespaces unless they
> > are explicitly defined in the XSD schema or by other
> > means described in this Open Packaging
> > specification. Package implementers shall enforce
> > this requirement upon creation and retrieval of the
> > XML content. [M1.21]
>
> --
> Regards,
> Makoto
>



-- 

Praying for the victims of the Japan Tohoku earthquake

Makoto
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