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At 2003-06-09 10:24 -0700, Fatih TURKMEN wrote:
No, the processor builds an XPath tree from the stylesheet XML, then an XPath tree from the source XML, and based on the instructions that it finds in the stylesheet XPath tree copies XPath nodes from both trees to build from scratch the result as an XPath tree that is then serialized with angle-brackets into XML syntax.
The result tree is never manipulated, it is only grown, from scratch, in document order.
An XPath tree is different than a DOM tree, but many implementers utilize a DOM tree as the internal representation.
An implementation is not obliged to maintain the result tree and is allowed to serialize the result tree as it is being built without keeping it around.
I hope this helps.
.................. Ken
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
Re: [xsl] Simple XSLT processor
Subject: Re: [xsl] Simple XSLT processor From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx> Date: Mon, 09 Jun 2003 13:52:46 -0400 |
At 2003-06-09 10:24 -0700, Fatih TURKMEN wrote:
How an XSLT processor, assuming processor is operating on a DOM tree for stylesheets (that is the style sheet instructions are on a DOM tree) operates?
Just searches these stylesheet instructions on the DOM tree(style sheet tree) and according to the instructions it modifies the result tree ?
No, the processor builds an XPath tree from the stylesheet XML, then an XPath tree from the source XML, and based on the instructions that it finds in the stylesheet XPath tree copies XPath nodes from both trees to build from scratch the result as an XPath tree that is then serialized with angle-brackets into XML syntax.
The result tree is never manipulated, it is only grown, from scratch, in document order.
An XPath tree is different than a DOM tree, but many implementers utilize a DOM tree as the internal representation.
An implementation is not obliged to maintain the result tree and is allowed to serialize the result tree as it is being built without keeping it around.
I hope this helps.
.................. Ken
-- Upcoming hands-on courses: (registration still open!) - (XSLT/XPath and/or XSL-FO) North America: June 16-20, 2003
G. Ken Holman mailto:gkholman@xxxxxxxxxxxxxxxxxxxx Crane Softwrights Ltd. http://www.CraneSoftwrights.com/s/ Box 266, Kars, Ontario CANADA K0A-2E0 +1(613)489-0999 (F:-0995) ISBN 0-13-065196-6 Definitive XSLT and XPath ISBN 0-13-140374-5 Definitive XSL-FO ISBN 1-894049-08-X Practical Transformation Using XSLT and XPath ISBN 1-894049-11-X Practical Formatting Using XSL-FO Member of the XML Guild of Practitioners: http://XMLGuild.info Male Breast Cancer Awareness http://www.CraneSoftwrights.com/s/bc
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