Subject: [xsl] XPath: better way to check for text nodes that aren't descendents of x or y nodes? From: "Lars Huttar" <lars_huttar@xxxxxxx> Date: Wed, 14 May 2003 11:08:46 -0500 |
Hi all, My requirement is to check for validity of certain XML data as follows: all text() nodes descended from . must be descendants of either llcd:vernac or llcd:gloss. (By the way, if it helps, the llcd:vernac or llcd:gloss will be descendants of . too, not ancestors.) My current test is test=".//text()[not(ancestor::llcd:vernac | ancestor::llcd:gloss)]" If this test is true, the data is invalid. But is there a more efficient way to do this? Something that checks for llcd:vernac|llcd:gloss along the way, instead of going down the descendant axis and then back up the ancestor axis (twice)? Something along the lines of test="./(not(llcd:vernac|llcd:gloss)/)*/text()" where * means "0 or more times". I guess I could do test="count(.//text()) > count(.//llcd:vernac//text() | .//llcd:gloss//text())" but I'm not sure that's any more efficient. This is not a big deal, just wanting to be as efficient as reasonably possible. Lars XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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