Subject: Re: [xsl] How to select elements containing ARPT but not elementscontaining APPC_ARPT or ARPT_RMK? From: "David Carlisle d.p.carlisle@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Mon, 24 Oct 2022 10:33:45 -0000 |
> For my education, would you please explain why this XPath expression selects all <row> elements: > //row[matches(affected_tables, '[ ;]?ARPT[ ;]?')] matches(affected_tables, '[ ;]?ARPT[ ;]?' ) is the same as matches(affected_tables, 'ARPT') which is same as contains( affected_tables, 'ARPT') as you are matching ARPT preceded and followed by 0 or 1 ";" but that is true if the string contains ARPT and false otherwise. [;]? is the same as ;? and adds no constraint as it always matches
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