[jira] [Resolved] (WICKET-4041) In Model, the type T should not extend Serializable.

["Igor Vaynberg (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WICKET-4041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Igor Vaynberg resolved WICKET-4041.
-----------------------------------

    Resolution: Invalid
      Assignee: Igor Vaynberg

for non-serializable things use LoadableDetachableModel<T>

for lists you actually want to store in session (which is what Model<T> does), use Model.of(List) which will auto-convert your list to an array list

> In Model<T>, the type T should not extend Serializable.
> -------------------------------------------------------
>
>                 Key: WICKET-4041
>                 URL: https://issues.apache.org/jira/browse/WICKET-4041
>             Project: Wicket
>          Issue Type: Improvement
>          Components: wicket
>    Affects Versions: 1.5-RC7
>            Reporter: Craig P. Motlin
>            Assignee: Igor Vaynberg
>
> The problem is that lots of common interfaces (like List) don't implement Serializable even though most/all of their subclasses are in fact serializable. That means clients wind up with code containing potentially unsafe casts like this.
> 		Model<ArrayList<MyDomainObject>> listModel = new Model<ArrayList<MyDomainObject>>()
> 		{
> 			@Override
> 			public ArrayList<MyDomainObject> getObject()
> 			{
> 				return (ArrayList<MyDomainObject>) DominionApplication.get().getMyDomainObjects();
> 			}
> 		};
> It still makes sense for Model to check that the type is an instanceof Serializable at runtime, but it's too much to enforce at compile time.

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