[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Partyin' like it's 1999
Alessandro Triglia wrote: > When people complain about namespaces, do they mean that namespaces should > not exist at all? Do they think they are useless? Or do they think they > should be replaced by something else? Or do they have in mind some simple > changes to the syntax, such as using URI/localname pairs everywhere? It's tempting to say that people complain about namespaces because the spec is impenetrable but the vast majority of those people don't read specs anyway, and certainly not that one. The first problem I've found when teaching namespaces is over expectations. People thing the URIs resolve to something magical (which they should, but usually don't). Then they think that they inherit to descendant elements or to attributes. This is usually dealt with by repeating ten times over that namespaces are dumb. Then you have different rules between elements and attributes for default namespaces. Nothing terrible, but people don't like that kind of inconsistency. There aren't really better solutions if you want to have default namespaces (which you do, a lot, if you're hand writing your XML). The W3C also doesn't help with its wonderful rule that "Cool URIs should be as hard as possible to remember". Throwing a random year in your namespace URIs is considered Good Practice. I guess we should be thankful they're not URNs. Finally, most of the common APIs were designed before namespaces, which were later grafted onto them. Thanks to that, not only are namespaces painful to use with those but it's altogether too easy to mix namespace-aware and non-namespace-aware manipulations, resulting in scary results that are hard to predict for the users. -- Robin Berjon
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