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that helps. I think if there are constructs like where you check the
results of path expressions as to whether they are instances of some
types, then we need type assignment.
regarding updates -- I had a question how updates work with wildcards.
I presume the following schema is correct..
<xs:element name="billTo">
<xs:complexType>
<xs:sequence>
<xs:element name="name" type="xs:string"/>
<xs:element name="address" type="xs:string"/>
<xs:element name="zip" type="xs:integer"/>
<!-- extension. one can put anything here -->
<xs:any namespace="#all" processContents="skip" />
</xs:sequence>
</xs:complexType>
</xs:element>
now, consider the tree (impractical, but still..)
<billTo>
<name>ABC</name>
<address>California</address>
<zip>90095</zip>
<zip>90024</zip>
</billTo>
Now consider an update (delete the first zip element) --
<billTo>
<name>ABC</name>
<address>California</address>
<zip>90024</zip>
</billTo>
Now, I hope both the documents are valid w.r.to the schema?? -- also, will
the type assignment for <zip>90024</zip> change during the update??
cheers and regards - murali.
On Wed, 29 May 2002, Dare Obasanjo wrote:
> > Anyways, my question is -- where will the type names and
> > element declarations associated with an element information
> > item in PSVI be used?
>
> I've seen user scenarios where both are needed.
>
> 1.) The type names for element declarations are useful for type based
> queries like those that will exist in Xpath 2.0 and XQuery.
>
> EXAMPLE: /myco:company-roster/myco:employee[. instance of element of
> type myco:managerType]
>
> where myco:managerType is a complexType defined in the schema.
>
> 2.) Currently MSXML ships with the ability to obtain the Schema Object
> Model (SOM) object that represents an element or attribute declaration
> from a DOM instance. Our users love it and we are inundiated with
> requests to provide similar functionality for the .NET frameworks
> version of the DOM. One user scenario involved creating a schema-aware
> XML text editor and using the element decls for the particular element
> being edited to determine whether the edits were valid or not which was
> way more performant than validating on each edit.
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