XOM API for Processing XML with Java

[Elliotte Rusty Harold <elharo AT metalab.unc.edu>]

At 1:45 PM +0100 2/7/03, Laurent Bihanic wrote:
> Hi,
>
> I need to pre-process an XML document to add some information to it. 
> The elements to be added shall belong to a known namespace, already 
> defined in the document. I want to avoid re-declaring this namespace 
> with a new prefix and thus I need to retrieve the namespace prefix 
> knowing the URI.

Wouldn't it be possible to just read the prefix from one of the known 
elements in that namespace? Would this solve your problem?

> I found no way in XOM to do this but found a solution using XPath. 
> Yet, it would be nice for XOM to provide a "native" solution.
>
> I'm proposing to add a new getNamespacePrefix(String uri) method to 
> Element (see below for a possible implementation). I tested it and 
> it works fine once the getNamespaceURI bug I reported earlier fixed.

Maybe, but it's going to take some more convincing. My current 
thoughts on this are that at best, this is syntax sugar, and it's a 
nice bit of sugar. I agree it's good not to unnecessarily use two 
different prefixes for the same namespace. But using multiple 
prefixes should not cause any problems if the document is otherwise 
correct.
--

+-----------------------+------------------------+-------------------+
| Elliotte Rusty Harold | elharo AT metalab.unc.edu | Writer/Programmer |
+-----------------------+------------------------+-------------------+
|           Processing XML with Java (Addison-Wesley, 2002)          |
|              http://www.cafeconleche.org/books/xmljava             |
| http://www.amazon.com/exec/obidos/ISBN%3D0201771861/cafeaulaitA  |
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