Re: [webbeans-dev] Typing of XML elements
On 18 Mar 2009, at 04:38, Jason T. Greene wrote:
Pete Muir wrote:
> Hi Norman, and other XML experts,
> One of the tasks for Web Beans is to build an XSD. There is an XSD
> per package, and an root-element per class. Classes can have
> annotations, such as bindings, which makes them into a bean. This
> means, for example, that a child element of the class element could
> be a binding type annotation (it's XML element equivalent), however
> placing, for example, an annotation which is not, for example, a
> binding type would be an error.
> Therefore, we can increase the "type safety" of the XSD by
> restricting the category of child elements that can be placed in
> the class element. However, I don't know how to do this in XSD -
> any pointers?
I'm not sure I understand what you want, however it sounds like a
substitution group. Can you give an example?
For example in package com.acme
class Foo {
}
could be described by XML:
<acme:Foo>
</acme:Foo>
Now, I want to add the binding com.acme.sales.Bar to the Foo class:
<acme:Foo>
<sales:Bar />
</acme:Foo>
In other words, any binding type can be inserted as a child element to
a class. So, we need a way to identify this as a point that any
binding type can be inserted.
Does this explain it better?
--
Jason T. Greene
JBoss, a division of Red Hat
--
Pete Muir
http://www.seamframework.org
http://in.relation.to/Bloggers/Pete