Any other suggestions?
Hm, no easy one. You could pass on a function that does the navigation to the relevant nodes:
let $f := function($node) { $node/update1 } return $a update replace value of node $f(.) with "bla"
Christian
On Fri, Aug 8, 2014 at 4:26 PM, Rob Stapper r.stapper@lijbrandt.nl wrote:
Hi Christian,
Thanx for the ultra fast response.
The problem is that my actual program I don't know the path from the root of $a to "default/text1" ( $c), in this case: "./". Element: "default/text1" ( $c), could be located anywhere in $a.
I do know the relative path to "default/text1" from $b, in this case: "$b/parent::*/default/text1".
It's not that simple;-) ( not to me anyway)
Rob
PS I've tried it with soring the XML in the database and using node-id(). But apparently the copy doesn't use node-id's. So this didn't work.
*Van:* Christian Grün [mailto:christian.gruen@gmail.com] *Verzonden:* vrijdag 8 augustus 2014 16:04 *Aan:* Rob Stapper *CC:* BaseX *Onderwerp:* Re: [basex-talk] How to update a XML-file from itself?
Hi Rob,
I didn't find variable $c in your example, but the following modification might give you the correct result:
let $update.processor := function($a, $b) {
($a update replace value of node ./default/text1 with ()) update insert node $b/string into .//default/text1}
...or (depending on what you plan to do):
let $update.processor := function($a, $b) {
($a update insert node $b/string into default/text1)
}
As you already observed, it is only possible to update nodes that have been copied by the 'update' keyword.
Hope this helps,
Christian
On Fri, Aug 8, 2014 at 3:49 PM, Rob Stapper r.stapper@lijbrandt.nl wrote:
Hi,
Can anyone help me with this casus?
I want to update XML-source: $a, by inserting the content of XML-element: $b, a sub-element of $a, into XML-element: $c, also a sub-element of $a.
The relative path from $b to $c is known.
See attached example: the problem is that the update works on a copy of $a and that the destination-element: $b/parent::*/default/text1, is actually an element of the original $a.
How can I make it point to the corresponding element in the copy?
Any suggestions?
Thanx in advance,
Rob Stapper
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