[xwiki-users] Changing a document object during a notification

[Sergiu Dumitriu]

Sergiu Dumitriu wrote:
> Tiago Rinck Caveden wrote:
>> Hello,
>>
>> I'm using XWiki notification API (
>> http://platform.xwiki.org/xwiki/bin/view/DevGuide/Notifications) and 
>> now I
>> need to change a property of the document that is being changed by the 
>> user.
>> I tried simply changing the value but this does not persist it - after
>> rebooting the server the value is not there anymore.
>> Using the context.getWiki.saveDocument method was not a very bright idea
>> either because it started an infinite recursion - it called my 
>> notification
>> code back again.
>>
>> So, does anybody know what could I do?
> 
> Yes, use prenotifications. This means that instead of putting the code 
> in verify(), put it in preverify(), and use the constructor with 3 
> arguments.

I hit Send to soon, and my notification knowledge is a bit rusty...

I mean, when creating the notification rule (DocChangeRule or whichever you're using), use the 
constructor with 3 arguments, and use true for the second argument, false for the third one. If the 
Rule doesn't have such a constructor, call setPostverify(false) and setPreverify(true). That's all 
you need to do.

-- 
Sergiu Dumitriu
http://purl.org/net/sergiu/