Hi All,
I need generated-ids on elements in a BITS file that have @rids, so I
can link back to them. I cannot use generate-id(), because I need it to
produce the same id in both the xquery (eXist) context and in the XSL
(saxon) contect.
I have created a function that will generate a human readable id based
on the id of the nearest ancestor/@id and then element-name + sequence
number. It produces the output that I like, but at the cost of a poor
performance (when run on a whole book) . now with the preceding/ancestor
juggling that I do there might be a better way than mine, so my question
is if there is a better way to tackle this problem.
My function:
declare function local:get-id-in-doc ( $target as element() ) as xs:string
{
B let $current-element as xs:string := local-name($target)
B let $ancestor-with-id as element()? := $target/ancestor::*[@id][1]
B let $prefix as xs:string? := $ancestor-with-id/@id/string()
B let $count :=
B B B if($prefix) then
B B B B B (: case 1: there is an ancestor with an @id :)
B B B B B count($target/preceding::*[local-name() eq
$current-element][ancestor::* = $ancestor-with-id]) + 1
B B B else if ( count($target/ancestor-or-self::*[local-name() eq
$current-element]) eq 1) then
B B B B B (: case 2: no numbering needed :)
B B B B B ()
B B B else
B B B B B (: case 3: numbering based on position in the whole document :)
B B B B B count($target/preceding::*[local-name() eq $current-element]) + 1
B let $numbered-id as xs:string := concat(replace($prefix,'\.','-'),
if($prefix) then '-' else (), $current-element, $count)
B return $numbered-id
};
My questions:
1. Is there a better way to look up the number of preceding same-named
elements in a subset of a document that is defined by the @id on some
ancestor?
2. Is there an alternative way of generating ids (possibly having less
human-readable values) that would work in both the xquery and xslt realm?
Thanks.
--
Pieter Lamers
John Benjamins Publishing Company
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