Re: Determining what facets can operate on what datatype.

Awesome, exactly what I was looking for.

Thanks!


On Mon, Dec 3, 2012 at 5:00 PM, C. M. Sperberg-McQueen <
cmsmcq@blackmesatech.com> wrote:

>
> On Dec 3, 2012, at 2:18 PM, Casey Jordan wrote:
>
> > As I dig deeper into the spec I am finding it hard to easily determine
> what facets are compatible with what datatypes. For instance, the
> definition of length:
> >
> > "For string and datatypes derived from string, length is measured in
> units of characters as defined in [XML 1.0 (Second Edition)]. For hexBinary
> and base64Binary and datatypes derived from them, length is measured in
> octets (8 bits) of binary data. For datatypes derived by list, length is
> measured in number of list items."
> >
> > Indicates to me that minLength, maxLength and fixedLength facets can
> only apply to derivations of String, hexBinary, base64Binary or List types.
> >
> > However, I don't see that explicitly stated anywhere (I am likely
> missing something) which leaves some question to my assumptions as well as
> what to do when encountering other datatypes.
> >
> > Is there information available which I am not seeing or should a way to
> approach this problem that I may not be realizing?
>
> You may find it helpful to consult the table headed "Schema Component
> Constraint: applicable facets" in section 4.1.5 "Constraints on Simple
> Type Definition Components".
>
> http://www.w3.org/TR/xmlschema-2/#defn-coss
>
> On the specific facets you mention: the length facets are specified as
> being legal on all datatypes, but they are not always very meaningful.
> XSD 1.1 specifies the meaning of the length facets more clearly for
> all primitive types (and says explicitly that the length facets are
> always satisfied for QName and NOTATION.
>
> And yes, enumerations are legal on all datatypes, including
> user-defined datatypes.
>
>
> --
> ****************************************************************
> * C. M. Sperberg-McQueen, Black Mesa Technologies LLC
> * http://www.blackmesatech.com
> * http://cmsmcq.com/mib
> * http://balisage.net
> ****************************************************************
>
>
>
>
>


-- 
--
Casey Jordan
easyDITA a product of Jorsek LLC
"CaseyDJordan" on LinkedIn, Twitter & Facebook
(585) 348 7399
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