[jira] [Resolved] (ISIS-2903) Recreation fails for ViewModels containing Entities

["Andi Huber (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ISIS-2903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andi Huber resolved ISIS-2903.
------------------------------
    Resolution: Fixed

{color:#1d1c1d}I found that {color}_Action_{color:#1d1c1d} clicks do trigger their own AJAX request-cycle in {color}{_}Wicket{_}{color:#1d1c1d}, which we historically used to build the Action-result's {color}{{EntityPage}}{color:#1d1c1d} instance and then passed this instance to {color}{{RequestCycle.get().setResponsePage(entityPage)}}{color:#1d1c1d} for Wicket to render with the next request-cycle{color}{_}.{_} {color:#1d1c1d}I also learned, when this next request-cycle happens to run on a different thread, this will not work.{color}{color:#1d1c1d}A first fix I have done, is to not build the {color}{{EntityPage}}{color:#1d1c1d} within the AJAX request-cycle, instead just create the bookmark for the Action's result, which we then pass over to the next request-cycle, that renders the page using  {color}{{{}PageParameters{}}}{color:#1d1c1d}. That way we guarantee, the {color}{{EntityPage}}{color:#1d1c1d} is built from scratch before rendering. Meaning, all contained entities are also attached to their persistence layer.{color}

> Recreation fails for ViewModels containing Entities
> ---------------------------------------------------
>
>                 Key: ISIS-2903
>                 URL: https://issues.apache.org/jira/browse/ISIS-2903
>             Project: Isis
>          Issue Type: Bug
>          Components: Isis Core, Isis Examples Demo App
>            Reporter: Andi Huber
>            Assignee: Andi Huber
>            Priority: Blocker
>             Fix For: 2.0.0-M7
>
>
> reproduce ... [Demo] Nature Stateful Refs Entity
> Various glitches:
> 'add Child' ... no choices given
> 'add All' ... throws
> java.lang.IllegalStateException: entity demo.JaxbRefEntity is required to have a memoized ID, otherwise cannot re-attach 
> Also click on VM's title (reload page) throws.



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