Re: [xml-dev] XML Schema question

[Stephen Green <stephengreenubl@gmail.com>]

I've updated MicroXSD (yet again) to fix my glaring omission of
simpleContent. Thanks again for Evan Lenz's advice on that.

I have written it all up a little and both formal schema and informal
user guide (wannabe 'spec') comes to easily under 15 pages so
it does seem to pay off targeting MicroXML and 'keeping it simple'.

It's all here
http://stephengreenxml.blogspot.com/2011/02/microxsd.html
(also the same thing here http://www.stephengreenxml.org.uk/
but in 'document' form)

I know I need to add something about mixed content. Anything
else I missed (it seems a little too easy to just need 14 pages)?

----
Stephen D Green



On 1 March 2011 09:39, Stephen Green <stephengreenubl@gmail.com> wrote:
> Many thanks Evan. Looks like MicroXSD needs a bit more added to it then.
> I'll have to add simpleContent, extension and extension/@base for the bare
> bones functionality of data-typed elements which have attributes (even with or
> without child elements). To do this I might have to rethink my versioning or
> do that ugly trick and have a version 2012 in 2011! :-)
>
> As for RNG, I guess that gets decided by your toolset. If it were ever the case
> that say C# and SQL Server (my tools of trade) supported it maybe I'd switch.
> For now I'd guess a majority or near majority of web developers have to stick
> with W3C XML Schema so for them a subset of it like MicroXSD might be more
> pertinent to their work than a subset of RelaxNG. I imagine that picture might
> not change, for a long time at least.
>
> Many thanks though.
>
> Steve
>
> On 28/02/2011, Evan Lenz <Evan.Lenz@marklogic.com> wrote:
>> It sounds like you want a "complex type with simple content." Here's an
>> example: http://www.datypic.com/books/defxmlschema/chapter13.html#EX172
>>
>> I agree that there should be a simpler way to do this (though there
>> isn't). And that's one of the reasons I prefer using RELAX NG (and often
>> trang to convert to WXS).
>>
>> Evan Lenz
>> Software Developer, Community
>> MarkLogic Corporation
>>
>>
>>
>>
>> On 2/28/11 10:34 AM, "Stephen Green" <stephengreenubl@gmail.com> wrote:
>>
>>>I've been looking again at this MicroXSD subset of W3C XML Schema
>>>and thought I had made a glaring omission but now I wonder whether
>>>the omission is actually there in proper W3C XML Schema. As I try
>>>to write examples of how to use the subset I have started with simple
>>>'Hello World' XML
>>>
>>><Hello>World</Hello>
>>>
>>>Now to write a schema for this is easy - just use a simpleType - simple!
>>>I tell the reader they can use <restriction base="string"/> to say that
>>>the content of the element is to be a string. Fine.
>>>
>>>But next I just want to add an attribute, say
>>>
>>><Hello from="Steve">World</Hello>
>>>
>>>Why should that be difficult? I just want to keep on saying that the
>>>content
>>>of the element is a string though. To add an attribute I understand I have
>>>to switch to a complexType, don't I? But how on earth do I do that AND
>>>keep my strong typng of the element content? Am I missing the obvious?
>>>
>>>When faced with this before I dropped the datatyping of the element and
>>>specified mixed content for the complexType but surely that's not
>>>necessary
>>>is it?
>>>
>>>----
>>>Stephen D Green
>>>
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>>
>>
>
>
> --
> ----
> Stephen D Green
>