Hi Steve, Yeah, I was looking at the Saxon solution earlier. The restriction that you can't use predicates (e.g. //eleme...@name=$refname]) I'm afraid may be a deal breaker for us.
Jeff > -----Original Message----- > From: Steven D. Majewski [mailto:sd...@virginia.edu] > Sent: Tuesday, May 11, 2010 9:23 AM > To: users@cocoon.apache.org > Subject: Re: Very large Generator file > > > [1] You might look at using Joost/STX which does streaming transforms. > It's not XSLT -- it's an xslt-like transformation language designed > for one pass processing, > so STXPath is more restricted than XPath. > > http://joost.sourceforge.net/ > > We've used it within cocoon to extract data which is then may be > transformed in a 2nd stage. > We've run into a few bugs, but we're not using the latest current > version. > ( I think there were some incompatibilities with the cocoon 2.1.* stx > transformer and > the newer joost libraries, but I haven't looked at this in quite a > while. ) > > > [2] I believe Saxon can do some transforms in a streaming mode. I > think this extension > requires one of the paid licensed versions of Saxon. I haven't tried > this myself. > > http://saxonica.blogharbor.com/blog/_archives/2006/7/4/2084120.ht > ml > > -- Steve Majewski > > > On May 11, 2010, at 4:51 AM, Huib Verweij wrote: > > > Hi Jeff, > > > > You wrote: "I guess I was under the impression that SAX based xsl > > transformers didn't use much memory regardless file size, but > > perhaps that's not true?" > > > > It's true. However, when you do a XSLT transformation the entire XML > > document needs to be available to the XSLT processor, because you > > can access any node in the document, e.g. "/very/large/path/to/some/ > > dark/corner/of/the/XML/node". > > > > I'm not sure about your use-case so I don't know if it will help, > > but you could try using the MultiFragmentTraxTransformer from the > > cocooncomponents project on Google code. It reduces memory > > consumption drastically by allowing you to specify a fragment in the > > XML that you want transformed. If you have a very large document > > that looks like this: > > > > <root> > > <item/> > > <item/> > > .... > > <item/> > > </root> > > > > and all you want to do is transform the <item/> elements then the > > MultiFragmentTraxTransformer is your friend. > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@cocoon.apache.org > For additional commands, e-mail: users-h...@cocoon.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@cocoon.apache.org For additional commands, e-mail: users-h...@cocoon.apache.org
