Subject: Re: [xsl] XSLT internal tree representation in memory From: Johannes Döbler <jd@xxxxxxxxxxxxxx> Date: Thu, 25 Sep 2003 12:14:35 +0200 |
[1] http://www.aztecrider.com/xslt/ [2] http://www.aztecrider.com/bigxml/
Hello,
This is my first posting to the XSL-List and I am fairly new to XSLT. Does the XSLT transformer need to load in the whole source document in memory in order to read and parse it to create the internal representation of the tree in memory? Michael Kay's book has an explanation of how the transformer process works in his XSLT 2nd edition, page 75, but it is unclear to me if it needs to load the whole source document into memory before the process can start. I have searched the XSL FAQ archives and found two similar issues where the users are transforming large source documents and are getting Java out-of-memory exceptions. One suggestion was to use a database to store the stylesheets and divide up the tasks. This is not an option for me and the source documents to transform may be as large as 2 gig. Another suggestion I saw on the FAQ was to divide the file into chunks and transform the pieces and concatentate it back into one big file.
I have created a simple Java prototype that takes in (from disk) a xslt stylesheet (file) and an xml source document (file) to transform it into another xml source document. I am using JAXP and the StreamSource class to transform the data and am currently using small source files to test my XSLT style sheets.
Thank you for any suggestions or help that you can provide.
Phyllis
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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