But if it traverses and then call wrapOnAssignment on the first one it finds what do all the chained models do then? Why are they there? Because from that moment on those chained are completel gone. They could even be gc'ed So this only works if getObject from them are doing nothing more then calling getObject from chained.
What you could do is let all your chained models also implement IComponentAssignedModel johan On 11/6/07, ChuckDeal <[EMAIL PROTECTED]> wrote: > > > I have DropDownChoice objects where I want the choices model to be sorted. > The choices come from a database (using a HibernateListModel from > databinder) but I am unable to perform the sort on the database side, it > must be done on the server after the results are returned (due to the > nature > of the sort function). Previously, I had extended the HibernateListModel > to > make a SortableHibernateListModel, which worked very well. However, That > style of adding features gets cumbersome as you try to add new features > in. > For instance, next was a FilterableHibernateListModel (that also wanted to > sort). > > So, I tried another approach whereby I would chain the operations > together. > So, I created a SortingModel that implements the IChainingModel interface > and then stuck the HibernateListModel inside of it. And that still > worked. > But, in another place, the model that I put into the SortingModel > (IChainingModel) is an impl of IComponentAssignedModel. The problem is > that > when assigning choices to a DropDownChoice, it calls Component.wrap which > specifically looks for IComponentAssignedModel models, and if found, calls > wrapOnAssignment(). However, in my case, wrap will see the SortingModel > not > the IComponentAssignedModel and therefore not operate as it did > previosuly. > > I'm looking for some feedback here... > Should wrap() be updated to traverse the IChainingModel chain until it > finds > an IComponentAssignedModel or exhausts the chain? > > Should I find a different method of adding sort capabilities on top of a > Model? > > What other options do I have? > > Thanks, > Chuck > > -- > View this message in context: > http://www.nabble.com/Component.wrap-and-IChainingModel-tf4759201.html#a13610128 > Sent from the Wicket - User mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > >
