[XML-SIG] IPC 10 BoF notes (Re: minidom changes & additional modules)
Fri, 15 Feb 2002 08:50:56 -0700
Aargh! I'm so sorry, even though Fred posted a reminder I keep forgetting to
post my notes from the BoF.
The key determination that was made was to add support for XPath evaluation to
the DOM apis, perhaps in the form:
#get DOM node somehow
Which would return a node list of all the descendant nodes. Of course any
other XPath expression my be used, and the node on which evaluate was called
would serve as the context.
Issues I see that need to be resolved:
* How to define variable bindings and extension function definitions
* Whether to maintain context position and context size info
* How to resolve the ordering of returned node sets (I assume all node sets
would be sorted into doc order and turned into node lists on output, but we
* Whether to turn this into a generic query system a la XML:DB, which would
allow other query modes, such as XPointer?
Here are my actual notes (sketchy, unfortunately, because at the latter parts
I got too much into the dicussion ;-) )
New DOM BOF
How many peeps using XML/DOM/both are using it for : 5 of us
Data only: 8
DOM for data: 3 people
DOM is confusing: API is non-intuitive, not Pythonic, Java-style function call
minidom gives no guidance on navigation
DOM is not lexically consistent (no round-tripping)
Slow and memory intensive
Andrew Dalke discussed particular problem he had with manipulating XML that
was generated from non-XML formats.
A consensus began to emerge that we move towards minidom+XPath as an
experimental fix for DOM usability.
Was discussed that pDomlette is redundant against minidom. Mike Olson will
work on minidom/pDomlette merging.
Uche Ogbuji Principal Consultant
email@example.com +1 303 583 9900 x 101
Fourthought, Inc. http://Fourthought.com
4735 East Walnut St, Boulder, CO 80301-2537, USA
XML strategy, XML tools (http://4Suite.org), knowledge management