Re: To namespace or not to Namespace ....
On Wed, Apr 7, 2010 at 11:13 AM, Andrew Welch <firstname.lastname@example.org> wrote: > On 7 April 2010 13:49, Simon St.Laurent <email@example.com> wrote: >> On 4/5/10 11:59 PM, Liam R E Quin wrote: >>> >>> If you don't have an ambiguity problem, the complexity of namespaces >>> is simply unlikely to give you any benefit. >> >> I'll agree with Liam, to the extent that I'd like to see that emblazoned on >> a brass plaque somewhere in the XML Hall of Fame. >> >> The opening "if" is important, of course. > > True. However, can you be sure that somewhere down the line some > other consumer of your markup won't come along? The pain from > retrofitting namespaces is much, much worse than coding them in from > the start. Yes; I always expect my XML to be combined in unexpected ways with other dialects, and I am rarely disappointed. This is actually one of the thing I deeply appreciate about XML (and thus, the existence of namespacing technology). As a result, every dialect I develop ends up in its own namespace. > My suggestion would be to use a namespace, as it brands your markup > and prevents problems down the line, and definitely use a prefix. > > Unprefixed namespaced xml can be a pain, but prefixed xml is no problem at all. And here is where I get confused. To a namespace-aware XML processor, the existence of prefixes (or lack thereof) in the source is irrelevant. I don't feel any pressure to use namespace prefixes until multiple dialects get combined, and then I tend to award the majority dialect with prefix-freedom. (A notable exception is XSLT, where I like to emphasize the majority *output* dialect by placing it in the default namespace.) Take care, John L. Clark -- PLEASE NOTE that this message is not digitally signed. As a result, you have no strong evidence that this message was actually sent by me. Upon request I can provide a digitally signed receipt for this message or other evidence validating its contents if you need such evidence.
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