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Re: XPath filters equivalence

From: Phil Fearon <pgfearo@-----.--->
To: NULL
Date: 10/15/2007 7:18:00 AM

Peter wrote:
>To compare two XPath statements, you'd need some kind of >comparative
parser or tracer, which would identify the >nodes referenced by each
segment of the statement until >the end of the statement was reached, or
failure >occurred. I'm not aware of any such tool, although it may >well
exist.

SketchPath is such an XPath tool that includes a 'tracer' to identify
the nodes reference by each statement segment as you describe.

There may be other such tools but I haven't come across one myself.

Also, because SketchPath allows XPath expressions to be reused as
$variables within other XPath expressions it would be possible to write
one XPath expression that shows the intersect (or inverse) of two other
XPath referenced expressions.

SketchPath (a .NET application) is in late Beta, and is available for
free download from http://www.sketchpath.com if you want to give it a
try.

Phil Fearon





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