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- To: <firstname.lastname@example.org>,<email@example.com>
- Subject: RE: [xml-dev] XML Schema Question: named or anonymous types in element definition?
- From: "Dare Obasanjo" <firstname.lastname@example.org>
- Date: Tue, 30 Mar 2004 15:24:50 -0800
- Thread-index: AcQWq3SS++TGEhIUQmSz9dog0NZ9swAAojqQ
- Thread-topic: [xml-dev] XML Schema Question: named or anonymous types in element definition?
According to http://www.w3.org/TR/2004/PER-xmlschema-1-20040318/#cvc-elt
"<element>s within <schema> produce global element declarations;
<element>s within <group> or <complexType> produce either particles
which contain global element declarations (if there's a ref attribute)
or local declarations (otherwise). For complete declarations, top-level
or local, the type attribute is used when the declaration can use a
built-in or pre-declared type definition. Otherwise an anonymous
<simpleType> or <complexType> is provided inline."
The last sentence is the relevant one. The schema fragment below is
PITHY WORDS OF WISDOM
It works better if you plug it in.
This posting is provided "AS IS" with no warranties, and confers no
> -----Original Message-----
> From: Bob Wyman [mailto:email@example.com]
> Sent: Tuesday, March 30, 2004 3:05 PM
> To: firstname.lastname@example.org
> Subject: [xml-dev] XML Schema Question: named or anonymous
> types in element definition?
> I appeal to the gods of XML, schemas, etc. to clarify an
> issue concerning XML Schema use...
> In the CAP (Common Alerting Protocol) specification, there
> are a number of element definitions that look something like
> the following:
> <element name = "msgType">
> <simpleType name = "msgType" >
> <restriction base = "string">
> I believe, perhaps incorrectly, that the "simpleType" element
> above should not have a name attribute. i.e. it should be simply:
> "<simpleType>..." I note that the .NET XSD editor simply
> rewrites such named types to anonymous types in the editor.
> Other schema editors complain about the name attributes,
> however, it is reported that the XSD tools that come with
> Axis require that the name attribute be present.
> What is the *correct* coding of this schema? Should the
> <simpleType> elements in this situation have name attributes?
> If not, then is it that they MUST not have them, or is it
> that they SHOULD or MAY not have them? (I can't find the spot
> in the XML Schema spec which would address this issue...
> bob wyman
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