Subject: Re: [xsl] The benefits of exact selection From: Vyacheslav Sedov <vyacheslav.sedov@xxxxxxxxx> Date: Fri, 6 Nov 2009 19:06:30 +0300 |
<xsl:value-of select="/document/colors[1050]/color[140]/dec/@num"/> is not same as <xsl:value-of select="//@num"/> you can`t compare this two XPath`s alone from XML - it is same as compare "soft with warm" :) can bet your students high esimate comparing push and pool scheme for XSLT (also known as data-driven and template-driven models) 2009/11/6 Michael Kay <mike@xxxxxxxxxxxx>: >> >> Using Saxon PE from inside Oxygen, I transformed 20 times for each. >> Here is the average time as reported by Oxygen: >> >> 1) Exact selection: 4.1s >> 2) Wildcard selection: 5.0s >> >> That is a difference. But it is also fair to say that for >> most transformations, on a small dataset, it will be >> impossible to measure a difference of any importance. >> > > Does your transformation time include document parsing/building time? For a > small task like this, the parsing time will completely swamp the > transformation time. If the parsing time is 4.0s, then your figure shows the > transformation time is different by a factor of 10. > > Regards, > > Michael Kay > http://www.saxonica.com/ > http://twitter.com/michaelhkay
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