XOM API for Processing XML with Java

[Regier Avery J <RegierAveryJ AT JohnDeere.com>]

Or look at it this way:  I have just had a default namespace context created 
for me and there is a big part of the namespaces list inaccessible via 
lookup(). A part that is typically the most important. 

- Avery

On May 14, 2012, at 4:13 PM, "Regier Avery J" <RegierAveryJ AT JohnDeere.com> 
wrote:

> Look at the whole context. It starts with making a context based on the 
> contents of the document in question. Then I ask the context for an unbound 
> namespace. This worked in previous versions of xom. It is quite handy to 
> find an unbound namespace anywhere in the document.   It is especially 
> handy since in the context of my code the whole point is to setup a 
> namespace context with which i need to robustly reference any namespace in 
> the document, and the createnamespace() has just done the equivalent work 
> of  traversing the tree for namespaces.  To do the same now I think I would 
> have to iterate the document again searching for namespaces that have no 
> prefix assigned. Maybe this is more correct anyways.  In a large doc this 
> will perform poorly. I would probably have to provide a heuristic to search 
> only n levels deep or only the first child and risk missing some.  It is 
> frustrating because the knowledge is so close at hand but inaccessible 
> behind this new line of code. 
> 
> - Avery
> 
> On May 14, 2012, at 3:52 PM, "Elliotte Rusty Harold" <elharo AT ibiblio.org> 
> wrote:
> 
>> On Mon, May 14, 2012 at 1:50 PM, Elliotte Rusty Harold
>> <elharo AT ibiblio.org> wrote:
>>> On Mon, May 14, 2012 at 1:44 PM, Regier Avery J
>>> <RegierAveryJ AT johndeere.com> wrote:
>>>> It seems to be lost here that I am not attempting to bind to the null 
>>>> namespace. I am attempting to bind a prefix to a non-null namespace that 
>>>> currently has no prefix because the document did not specify it with one.
>>> 
>> 
>> That doesn't look like what your code is doing. See here:
>> 
>> context.addNamespace("a", context.lookup(""));
>> 
>> context.lookup("") should always return no namespace because "" cannot
>> be bound in an XPath context.
>> 
>> 
>> -- 
>> Elliotte Rusty Harold
>> elharo AT ibiblio.org
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