Bug 316990

Summary:	[xpath2] Axis iteration carries a lot of overhead
Product:	[WebTools] WTP Source Editing	Reporter:	Jesper Moller <jesper>
Component:	wst.xpath	Assignee:	Project Inbox <wst.xsl-inbox>
Status:	NEW ---	QA Contact:	David Carver <d_a_carver>
Severity:	enhancement
Priority:	P3	Keywords:	performance
Version:	3.2
Target Milestone:	4.0
Hardware:	All
OS:	All
Whiteboard:
Bug Depends on:	316986, 316988
Bug Blocks:

Description Jesper Moller

2010-06-15 20:11:49 EDT

Iterating over axes takes a lot of overhead with temporary ResultSequences flying about, copied at each level, so that e.g. fetching //* is nowhere near linear in count(//*)

Ideally, we'd make the Axis produce lazy evaluators and do the filtering on consumption from the generated sequence. Less copying!

Comment 1 David Carver

2011-01-28 00:17:10 EST

Moving to the XPath component out of XSL.