Cart
|
[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: XHTML 2 Working Group won't be renewed?
 > I keep seeing the idea being
pushed of defining some sort of umbrella namespace that can be utilized to
"wrap" other namespaces, so that you can essentially work with a default
namespace for multiple tags.
Yes, I've pushed similar ideas in the past. I've
always thought there was room for a concept of a "namespace path" where a local
name does not have to carry an explicit prefix to determine what namespace it
belongs to, but is instead resolved by some kind of deterministic search
algorithm: for example, if there is a set of namespaces in scope, look in all of
them, and if the name is defined in more than one of the namespaces, give
precedence to the namespace of ancestor elements in order of containment. This
depends on some kind of mechanism where the set of local names in a namespace is
closed and is defined somewhere.
Then you can start to have a concept of a document type or
media type (or perhaps a "super-namespace") mapping to a set of namespaces and a
search order, so once the document/media type is known, it doesn't need to
contain any explicit namespace declarations at all, unless they are actually
needed to resolve ambiguous local names, which will be rare.
(Java manages this perfectly well, where package names only
need to prefix a class name if the class name is ambiguous within the set of
packages defined in the document header).
A nice feature for incremental adoption is that a document
with implicit namespaces in this form could still be well-formed XML 1.0 and
could be mechanically converted to a document using explicit namespaces
conforming to XML-Namespaces 1.0 or 1.1, and its infoset would be compatible
with existing infosets.
Regards, 
[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] |
PURCHASE STYLUS STUDIO ONLINE TODAY!Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced! 
Download The World's Best XML IDE!Accelerate XML development with our award-winning XML IDE - Download a free trial today! Subscribe in XML format
|
|||||||||
