22 Mar
2017
22 Mar
'17
7:13 p.m.
Thank you Thomas, I'll try it!
Francisco Barretto
Laboratório de Arte e Tecnologia - LATE!
www.late.art.br
Laboratório de Pesquisa em Arte Computacional (Midialab)
Universidade de Brasília - UnB
2017-03-22 14:02 GMT-03:00 Thomas Mortagne <thomas.mortagne(a)xwiki.com>om>:
See
http://extensions.xwiki.org/xwiki/bin/view/Extension/
Observation+Module+Local.
The event you want to listen to is org.xwiki.bridge.event.
DocumentDeletedEvent.
On Wed, Mar 22, 2017 at 5:55 PM, Francisco Barretto
<kikobarretto(a)gmail.com> wrote:
I have implemented a xwiki based application in
which there are two main
classes "A" and "B". Those classes have a one-to-many relationship
where
one "A" can be associated with many "B"s. (Just like presented in
https://www.xwiki.org/xwiki/bin/view/FAQ/HowToCreateAOneToManyRelations
hipInXWiki
)
The main thing is that when I delete a page which contains and represents
an "A" object, associated with many "B"s, those "B" pages
still contain
the
reference to the no longer present "A"
object. Therefore, I was hopping
to
find some kind of "onDelete" event
triggered when a page is deleted so I
could clean those dead references.
Just to clarify: "B" objects have an attribute called "A-reference"
where
the doc.fullName of an "A" page is stored. If I could trigger a method
when
this "A" object is deleted I would be
able to perform an HQL query in
order
to list those pages associated with the deleted
"A" page and set a null
value to the "A-reference" attribute.
Would appreciate any thoughts and hints on how to solve this because I'm
out of ideas and found no documentation on such event/trigger/method.
Thanks!
Francisco Barretto
--
Thomas Mortagne