in-mem-update won't update nodes from the DB. What I have done it create a new
node in memory based on the one loaded from the DB. Maybe there's a better, I
don't know.
Something like this:
let $uri := "/aa.xml"
let $article-in-db := fn:doc($uri)/pxml:article
let $article := element { fn:name($article-in-db) } { $article-in-db/@*,
$article-in-db/*, $article-in-db/text() }
return mem:node-insert-child($article/pxml:front/pxml:history, <a/>)
But then of course you'd have to save the changes back to the DB if you wanted
to persist them.
From: [email protected]
Date: Thu, 28 Oct 2010 13:16:21 -0400
To: [email protected]
Subject: Re: [MarkLogic Dev General] Inserting node to xml before it is loaded
in Marklogic
Hello there,
I'm interested in the memupdate from
http://github.com/marklogic/commons/tree/master/memupdate/ and I tried it. I
found one thing that I don't understand:
If I manually get the article node data and assign it to $doc as static data,
it will work, like let $doc :=<article xmlns="pxml">
<front>
<history/>
</front>
</article>
return
mem:node-insert-child($doc/pxml:front/pxml:history, <a/>)
the <a/> is inserted into history node.
But if the node is the node that I use fn:doc() to get from database, then it
does not do the update in memory. for example: let $uri := "/aa.xml"
let $doc := fn:doc($uri)/pxml:article
return
mem:node-insert-child($doc/pxml:front/pxml:history, <a/>)
I expect that it will return me with article node that has the <a/> inserted
into history node, but it didn't.
Is there anything that I missed? I want to get a document from database,
update some node, and then insert into another database with updated data.
Thanks, Helen
On Oct 26, 2010, at 1:10 PM, Micah Dubinko wrote:I believe this could help you:
http://github.com/marklogic/commons/tree/master/memupdate/
Thanks, -m
On Oct 26, 2010, at 2:57 AM, Geert Josten wrote:
Hi Pragya,
It sounds like you are looking for 'in-memory' updating of the XML. There was a
small library module on XQzone that facilitated with this, but not sure where
it went on github. It could also that the xqueryfunctions library
(http://www.xqueryfunctions.com/) provides readily available functions that
should help you with it. But it is quite trivial with your example:
let $x :=
<x>
<a>..</a>
<b>…</b>
<c>..</c>
<c>..</c>
</x>
return
element { node-name($x) } {
$x/@*,
$x/*,
<c>...</c>
}
You can use typeswitch if you need to go through your content recursively..
Kind regards,
Geert
drs. G.P.H. (Geert) Josten
Consultant
Daidalos BV
Hoekeindsehof 1-4
2665 JZ Bleiswijk
T +31 (0)10 850 1200
F +31 (0)10 850 1199
[email protected]
www.daidalos.nl
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From: [email protected]
[mailto:[email protected]] On Behalf Of Pragya Kapoor
Sent: dinsdag 26 oktober 2010 11:33
To: [email protected]
Subject: [MarkLogic Dev General] Inserting node to xml before it is loaded in
Marklogic
Hi,
I need to insert and element node to the following xml without inserting into
ML:
<x>
<a>..</a>
<b>…</b>
<c>..</c>
<c>..</c>
</x>
I want to add another <c> element based on some condition to get the desired
xml as:
<x>
<a>..</a>
<b>…</b>
<c>..</c>
<c>..</c>
<c>..</c>
</x>
Please let me know how can I do this.
Thanks,
Pragya
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