-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Great !! I'd love to see it integrated in to Axiom if it is better than Jaxen.
Since you are the creator/father/founder/ of SXC, any idea to integrate it with Axiom? Thanks a lot Dan, in advance :) - -- Chinthaka Dan Diephouse wrote: > I realize that this is a little late in response to the original poster's > question, but you may want to check out SXC - http://sxc.codehaus.org. It > doesn't have complete XPath support, but for simple expressions it can > create an optimized streaming stax parser which listens for your XPath > expressions. Its VERY fast. > > Disclaimer: I wrote SXC :-) > > Cheers, > - Dan > > On 4/22/07, Eran Chinthaka <[EMAIL PROTECTED]> wrote: >> > I assume no one had answered this email. > > Anyway, yes we build the whole object model internally to provide XPath > support. We have not implemented XPath on top of AXIOM or Stax. We > simply plugin in Jaxen document navigator mechanism to provide XPath > support. > > Couple of things to note here. Most of the queries that we encounter > requires the whole model to be build. So the 90% case looks at the whole > object model. If we try to optimize for the 10% case, then that might > lead to performance drawbacks of the system. > > These days I am looking at some of the techniques in SDI systems > (Selective Dissemination of Information) to be used inside Axiom. But I > am yet to find an efficient way to do this with a pull parser. Most of > them tries to exploit on the shared paths of the queries, but I think we > won't execute more than couple of XPaths against a given object model. > So if you find a better way of implementing XPath over Axiom, please do > let us know or even help us by implementing it. > > Thanks, > Chinthaka > > Angel Todorov wrote: >> Hi all, > >> I can see AXIOM has support for XPath. But beneath it is a StAX >> parser, and such pull-parsers don't have random access support for XML >> documents, by design. > >> So my question is: Do you call build() on the OM Tree that one wants >> to lookup with XPath? That is, do you cache everything in memory in >> order to support such xpath operations, or you preserve the full >> advantages of a pull-based parser ? > >> Thank you in advance. > >> Regards, >> Angel > >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] > > > >> - --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] >> >> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGLZvyjON2uBzUhh8RApcfAKCXNi6zhn7qsaWfjmlmFAn5XqYoCwCbBzx/ koNEk9WaC68QJXZwF/e9iTE= =rGBz -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
