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From Stephen Williams <>
Subject Re: Continuing our work on GenXDM - port of XML Security to use it
Date Fri, 21 Jan 2011 17:56:25 GMT
I'm interested, especially as I've recently written a very lightweight SAX/DOM-like Java parser
for fast parsing in Android/Java 
called Ssx (Super Simple XML).  Long dissatisfied with the verbosity and mistakes in the DOM
API, and having created a couple 
simplified XML APIs in the past, Ssx has a most-concise DOM/mini-XPath API that is directly
aimed at application data use.  The Ssx 
code has the ability to switch between SAX parsers on the fly, one of which is internal.

One method that I needed and that I think should be part of DOM-like APIs is a call like toXml()
which returns parseable XML for any 
element.  It should either assume a given set of namespace declarations (meaning it is more
of a fragment) or it should generate 
namespace declarations for everything active at the point in the tree.  Ssx does the latter
so far in an efficient way.

I can't publish Ssx yet, but hopefully soon.

Additionally, we've begun the process of getting interest here in an OpenEXI incubator project.
 EXI is the W3C Efficient XML 
Interchange proposed standard for compact, efficient-to-process binary XML.  We have two open
source code bases (one just open 
sourced) that we are currently combining that will form the basis for the project.  When a
little more complete, we will continue 
that discussion.


On 1/21/11 9:04 AM, Eric Johnson wrote:
> I've previously mentioned our GenXDM project on this mailing list. And I posted an incubator
proposal (gXML at the time).  As a 
> quick reminder, GenXDM defines a Java API for the XQuery Data Model, via a layer of indirection,
in such a way that you can choose 
> different XML tree implementations at runtime, with minimal overhead.
> At the time, it appeared we didn't attract enough interest to go through with incubating
at Apache.  We're still hoping to do 
> that, though.
> Since I posted our proposal, we've been busy.  Of particular note to this mailing list,
as a proof of concept, we've done a 
> complete port of the XML Security Java library (Santuario) to the GenXDM APIs.  And we've
now released that over at the Apache 
> Extras site.
> We kept the port fully backwards compatible (all existing tests pass unmodified!), and
added to the API, so that you can use 
> Santuario with non DOM XML trees.
> As we are still interested in incubating GenXDM at Apache, I wanted to mention our port
here, as several people mentioned at the 
> time that they wanted to see more, before deciding whether it made sense to get involved.
> The projects:
> We welcome you to stop by, kick the tires, and join our mailing list, as you see fit!
> Thanks.
> -Eric.
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