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 <kikobarre...@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/HowToCreateAOneToManyRelationshipInXWiki > ) > > 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
