XSLT functions in XPath
Hello All, I am working on an XSLT-like project, which uses XPath expression to retrieve data from an XML source and writes the results into a resulting data structure. XPath evaluation may be dependent on the results of previous evaluations, for example contextA = //author[@name = 'someName'] contextB = //book[@isbn] using contextA I am using the Saxon XPath implementation over DOM to take advantage of the XPAth 2.0. This works really well most of the time (the time when I am not missing anything), however I would like to have access to two more functions which would be really helpful: current() sort() Is it somehow possible to use current() in "normal" XPath, an example: contextA = //@isbn = '1234567' contextB = //author[books/book/@isbn = current() ] using contextA (I know that I could use a VariableResolver but this would be a bit over the top of what I would like to do and I would have to change the syntax of my currently really trivial configuration files ;-) ) In XSLT one can sort a nodeset by providing additional XPath expression. Prior to Saxon I used Jaxen and wrote me an extension function which could basically do something like sort-by(//author, '@name', '@forename') or sort-by(//book, 'number(@year)') Since Saxon has many more extension functions I wondered if I could use the its XSLT functionality somehow for this task. Any hints are much appreciated. Kindest regards, Victor
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