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Dare Obasanjo wrote:
>We shouldn't confuse schema validation issues with XML<->object mapping
>issues. From the sounds of things the problem is the latter not the
>former.
>
There is a difference between tools that ignore some constraints (e.g. a
tool
that doesn't use key/keyref in its machinations), a tool that barfs on
certain components in an XML Schemas schema, and a tool that does not
handle dynamic typing with xsi:type in instances.
People *are* confused by schema-using applications (other than validators)
because they expect to be able to use any schema.
It reminds me of a certain famous structured editor in the early 1990s: its
internal model did not have attributes, so it did not support round-tripping
of attributes from SGML. They soon found that they needed to support
them, to maintain their credibility. Maybe it shows that XML Schema tools
are not mature yet: indeed, the disappearance of this problem will be a sign
that XML Schemas tools are mature enough for cautious businesses to take
seriously. These incompatabilities indicate that we are still at the "early
adopter" stage, don't they?
Cheers
Rick Jelliffe
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