Yesterday, I posted a proposal to the Atom wiki for a method of specifying details about a person (their name, URL, etc.) once, and referring to it from other places in a feed. The main point was to avoid duplicating data. The original declaration of a person was to have an attribute named \"id\" (eg. <person id=\"qwerty\">), and that person could be referred to elsewhere using an attribute named \"ref\" (eg. <author ref=\"qwerty\" \/>). It didn't take long for suggestions to come in for a few little changes.<\/p>\n
The first suggestion was to use \"xml:id\" rather than just \"id\". xml:id is on it's way to becoming a standard attribute for specifying a locally unique id. The next suggestion was to use \"xlink:href\" instead of \"ref\". Why would it matter whether someone else's names were used or we made up our own? To a lot of people, it wouldn't make a lick of difference. But if you want to validate the document, which would include verifying that all ids are locally unique, then you need a way to tell the validator that ids are supposed<\/i> to be unique. If xml:id is used, then validators that know about xml:id will know to do that validation without having to refer to an external document that explains it to them. I imagine xlink:href is similar--a validator that understands it will know to verify that the id being referred to exists.<\/p>\n
I'm one of those people to whom the name change wouldn't make a lick of difference. If I were to develop an XML format in a vacuum, I'd never catch these little details that do matter to other people. Score a point for design by committee.<\/p>\n","protected":false},"excerpt":{"rendered":"
Yesterday, I posted a proposal to the Atom wiki for a method of specifying details about a person (their name, URL, etc.) once, and referring to it from other places in a feed. The main point was to avoid duplicating data. The original declaration of a person was to have an attribute named \"id\" (eg....
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