Re: [xwiki-users] Livetable counter or unique id?

Hi, I would see a couple of options of doing it yourself: 1) Add an ID property to your class and write a java event listener that assigns it when a new entry of your class is created. 1.1) Also make sure you customize your sheet to not allow users to modify that new property (i.e. remove any form element about it or set it hidden). 2) Add an ID property to your class and customize your sheet to add a hidden form element whose value you prefill with a random value (if one is not already set). 3) Customize the creation of new entries in your application so that you can generate a random document name for your entry which you can then use as ID etc. In all cases, you need to make sure that the random ID generated is sufficiently large to avoid collisions... and an existence check would also be good before using the generated ID. Whatever you do, you will still have a theoretical possibility of collision, since XWiki`s web APIs don`t really allow for transactional operations. You would have to get down and dirty to make it right, by having a script service that generates and creates, at the same time, inside the same transaction the document corresponding to your unique new entry, which you could then edit. However, if you do the basic checks and have a large enough random ID, you should be pretty safe in practice. Hope this helps, Eduard On Thu, Sep 22, 2016 at 4:16 PM, Vincent Massol <vincent(a)massol.net> wrote: