RE: Simulate schema-awareness to create comboBoxes

PS: try to find me at XML2006, and we'll talk about the problem.

Michael Kay

> -----Original Message-----
> From: Angela Williams [mailto:Angela.Williams@xxxxxxxxxxxxxxxxxx]
> Sent: 28 November 2006 18:01
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject:  Simulate schema-awareness to create comboBoxes
>
> Hello -
>
> I need some advice, please.  I have a multi-step problem and
> am not sure the best direction to take. I've tried a few
> different options, but surely someone has already solved this
> more elegantly than what I am doing.... I am attending
> <XML2006> and thought I could wait, but need to come up with
> something before then...
>
> Step 1: I need the global elements in a schema to be
> represented as options in comboBoxes on a JSF page.
>
> Step 2: I need to compare the user choices (in the instance
> document) against the schema to dynamically add or remove
> options from the comboBox according to the schema cardinality.
>
> I can write a stylesheet to parse the schema to provide the
> lists, but that just gives me a superset and doesn't account
> for cardinality. And I would still have to continue to
> compare the instance doc against the parsed schema to update
> the comboBoxes as the user makes choices.
>
> I'm using W3C XML Schema, XSLT 2.0, XPath 2.0 and Saxon8.  We
> have a license for SaxonSA, but it either doesn't offer the
> type of functionality I need or I just didn't recognize it.
>
> Schema:
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
>
>   <xs:element name="root">
>     <xs:complexType>
>       <xs:sequence>
>         <xs:element ref="Item-A" minOccurs="0" maxOccurs="1" />
>         <xs:element ref="Item-B" minOccurs="1"
> maxOccurs="unbounded" />
>       </xs:sequence>
>     </xs:complexType>
>   </xs:element>
>
>   <xs:element name="Item-A" type="a-type"/>
>   <xs:element name="Item-B" type="b-type"/>
>
>   <xs:complexType name="a-type"/>
>   <xs:complexType name="b-type"/>
>
> </xs:schema>
>
> Instance 1 > Only option should be 'Item-B':
> <?xml version="1.0" encoding="UTF-8"?>
> <root>
>    <Item-A/>
> </root>
>
> Instance 2 > Options should be 'Item-A' and 'Item-B':
> <?xml version="1.0" encoding="UTF-8"?>
> <root>
>    <Item-B/>
> </root>
>
> If someone could point me in the right direction, I would
> greatly appreciate it!
>
> Thanks!
> Angela Williams
> Channel Developer
> The 401k Company
> 512-344-1547
>