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Posted to j-users@xalan.apache.org by Richard Rowell <ri...@bowmansystems.com> on 2002/09/10 20:38:13 UTC
Performance questions/options
I would like to use Xalan to transform XML documents as they come into
our system. The documents can be quite large however, possiblly
extremely large. The documens are nicely divided however into many
discrete records.:
<records>
<agencies>
<agency>...
</agencies>
<clients>
<client>...
</clients>
...
</records>
I would like to transform each client record individually (and/or each
agency record individually, etc). I use a (Xerces) SAXParser currently
to parse the input stream, which then hands off to a custom (SAX) event
handler I have written that sticks the values into a RDBMS. Is there a
way to input Xalan into this process to where it will process the input
stream in record size chunks?
Re: Performance questions/options
Posted by Richard Rowell <ri...@bowmansystems.com>.
How does the TrAX stuff work, does it build a DOM tree then transform,
then produce SAX events from the transformed tree? My problem is I can
have very large XML files, far to large to build DOM trees out of
without exhausting memory.
On Tue, 2002-09-10 at 14:38, Jon Brisbin wrote:
> Trying using xalan's javax.xml.transform.sax.SAXResult and SAXSource
> before you handle your SAX events. Just insert your transform before
> your custom event handler.
>
> --- Richard Rowell <ri...@bowmansystems.com> wrote:
> > I would like to use Xalan to transform XML documents as they come
> > into
> > our system. The documents can be quite large however, possiblly
> > extremely large. The documens are nicely divided however into many
> > discrete records.:
> >
> > <records>
> > <agencies>
> > <agency>...
> > </agencies>
> > <clients>
> > <client>...
> > </clients>
> > ...
> > </records>
> >
> > I would like to transform each client record individually (and/or
> > each
> > agency record individually, etc). I use a (Xerces) SAXParser
> > currently
> > to parse the input stream, which then hands off to a custom (SAX)
> > event
> > handler I have written that sticks the values into a RDBMS. Is there
> > a
> > way to input Xalan into this process to where it will process the
> > input
> > stream in record size chunks?
> >
>
> > ATTACHMENT part 2 application/pgp-signature name=signature.asc
>
>
>
> =====
> Thanks!
>
> Jon Brisbin
>
> mail@jbrisbin.net
> 417.682.6157 (h/w)
> 417.825.3995 (c)
>
> __________________________________________________
> Yahoo! - We Remember
> 9-11: A tribute to the more than 3,000 lives lost
> http://dir.remember.yahoo.com/tribute
>
Re: Performance questions/options
Posted by Jon Brisbin <jo...@yahoo.com>.
Trying using xalan's javax.xml.transform.sax.SAXResult and SAXSource
before you handle your SAX events. Just insert your transform before
your custom event handler.
--- Richard Rowell <ri...@bowmansystems.com> wrote:
> I would like to use Xalan to transform XML documents as they come
> into
> our system. The documents can be quite large however, possiblly
> extremely large. The documens are nicely divided however into many
> discrete records.:
>
> <records>
> <agencies>
> <agency>...
> </agencies>
> <clients>
> <client>...
> </clients>
> ...
> </records>
>
> I would like to transform each client record individually (and/or
> each
> agency record individually, etc). I use a (Xerces) SAXParser
> currently
> to parse the input stream, which then hands off to a custom (SAX)
> event
> handler I have written that sticks the values into a RDBMS. Is there
> a
> way to input Xalan into this process to where it will process the
> input
> stream in record size chunks?
>
> ATTACHMENT part 2 application/pgp-signature name=signature.asc
=====
Thanks!
Jon Brisbin
mail@jbrisbin.net
417.682.6157 (h/w)
417.825.3995 (c)
__________________________________________________
Yahoo! - We Remember
9-11: A tribute to the more than 3,000 lives lost
http://dir.remember.yahoo.com/tribute