Hello guys, do you remember my work on classes and objects? I fear the answer is "no" :) Anyway, I have been working on some other critical projects so I haven't been able to work on that for some time. But, now I have restarted my study for my current needs. The idea was to provide a simple way to manage classes, to delete/restore class properties and to synchronize objects with these classes.
As I was not really happy about the result of my previous work based on class versioning (I found it too much intrusive in XWiki code and complicated), I totally changed my approach into something much lighter. The idea is really simple: I propose to add the feature of enabling/disabling class properties. * If you disable a property, it is only "hidden" without being deleted so you can modify the structure of the class without losing anything. * Then the disabled properties are also "hidden" for the objects instantiating this class and the valued fields are also not lost. * If you add a new property to the class, all objects will inherit a new field with the default value. * If you enable a disabled property, all the objects owning the field re-find it and the objects not having the field now have it with the default value. * you could also delete a disabled field from an object for some optimization issues. I also propose to add the "remove property" feature which would be quite protected but which is useful: you simply delete the property from the class. * All objects having the "removed" field are no more synchronized with the class. * the removed field still exist in the object but is no more available to classical display functions which use "class properties" to find object fields. * the removed field can be deleted from the object to resynchronize the object to the class * if a new property with the same type and name is re-added to the class, the object re-finds its existing field. The way to do it is quite simple: just add a "enabled" field to the PropertyClass and manage it in the code. I have modified a bit XWiki-Core and some velocity scripts but it seems really light without any really new logic Are you interested in this? best regards Pascal _______________________________________________ devs mailing list [email protected] http://lists.xwiki.org/mailman/listinfo/devs
