Thank you, Ivan.
My user's note is - full update functionality is needed much. Luckily I
can do things as you advised easily with Cocoon, but still.
Thanks for index advice.
Andrei Lunjov
23.09.2010 10:00, Ivan Shcheklein ?????:
Hi Andrey,
declare variable $x external;
for $a in $x/root/a
let $id := $a/id
return
if( exist( collection('aaa')/a[ id = $id ] ) )
then(
update insert
<m>...</m>
into collection('aaa')/a[ id = $id ]
)
else (
update insert
<a>
<id>...</id>
<m>...</m>
</a>
into collection('ettevotja_muudatused')
)
else statement clearly doesn't work, cause I need to specify a
document
name and create is somehow.
How can I do this inside such a statement?
Sedna doesn't support nested insert statements
(http://modis.ispras.ru/sedna/progguide/ProgGuidesu6.html#x12-430002.3).
If you need complex mass update you have to implement it on the
application level: just start transaction and break your query into
multiple XQuery and XUpdate statements.
BTW, consider creating value index on collection('aaa')/a by id (see
http://modis.ispras.ru/sedna/progguide/ProgGuidesu8.html#x14-480002.5.3 and
http://modis.ispras.ru/sedna/progguide/ProgGuidesu5.html#x9-310002.2.2).
And common question - does Sedna have any plans for XQuery Update
Facility http://www.w3.org/TR/xquery-update-10 to implement?
Yes, but we can't say exact timeline for this feature.
Ivan Shcheklein,
Sedna Team
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