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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Diagram of XPath axes
 Just a side note: If you want to select the preceding elements *including the ancestors*, use the XPath 2 << operator [1], which selects the nodes that precede the current in document order [2].It would be interesting to see a performance comparison of //*[. << current()] versus ancestor::* | preceding::* Both are rather heavily exposed to testing the relative order of two nodes in document order, which in some tree implementations (e.g. DOM) can be very inefficient. If you don't care about document order, however, (ancestor::*, preceding::*) should be fastest. There's also (ancestor::*/(. | (preceding-sibling::*/descendant::*))) if anyone wants to try it out. I do wish we had an "until" operator, so we could do //* until (. is current()). You can do that of course with a recursive function. Michael Kay Saxonica Michael Kay Saxonica 
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