January 2002
Intermediate to advanced
240 pages
6h 58m
English
Content preview from SAX2
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Namespace Information Items
These information items expose namespace identifiers and the prefixes currently used to associate element or attribute names with those identifiers. With SAX2, applications that track these prefixes need to use a stack to handle the lexical scoping rules: in the context of one element and its children, a prefix may indicate a different namespace than in parent elements because of a locally scoped redefinition. You can use the NamespaceSupport helper class to manage this stack or write something of your own.
These information items start with a
ContentHandler.startPrefixMapping() call and
end with a ContentHandler.endPrefixMapping() call. These are the only two start/end calls that SAX2 doesn’t require to be cleanly nested. Alternatively, if the namespaces feature flag is false, this information can be reconstructed from the xmlns and xmlns:* element attributes.
|
Property |
Callbacks |
Explanation |
|---|---|---|
|
[prefix] |
|
|
|
[namespace name] |
|
Since these values aren’t dereferenced, they are exactly as provided in the XML source text. Don’t assume dereferencing such URIs lets you do anything useful. |
If the namespaces feature is set to false (its default is true) this information is not made available except implicitly through the element [attributes] property, which will implicitly include all [namespace attributes]. (It is illegal to set namespaces to ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.