[jdom-interest] XPATH engine

Jason Hunter jhunter at xquery.com
Wed Nov 9 10:44:35 PST 2005

The XPath engine is in fact pluggable, but I don't know of a better one. 
  Perhaps it's out there.

If performance matters, I'd use XQuery for it.  At MarkLogic we're able 
to get 100 XPaths per second against large data sets.  The speed comes 
from the indexed nature of the storage (you can skip walking the tree). 
  It's not a JDOM plugin though, it's a separate server process.


Kevin L Cobb wrote:

> I am trying to tune some processing that uses JDOM to apply about 1000 
> XPATH expressions to a batch of XML files. I am using Xerces as my SAX 
> parser implementation and thought about replacing this with something 
> more speedy. But, the bulk of the work is really in applying these XPATH 
> expressions, not in actually parsing the XML. I am caching the 
> expressions as XPath objects and also only parsing the source XML into a 
> Document object once.
> I'm wondering if JDOM allows me to replace the XPATH implementation with 
> other implementations - I think that the default is JAXEN. Are there 
> speedier XPATH implementations available?
> Any advice on increasing the speed here would be well received. Thanks 
> in advance.
> -Kevin
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