In your stacktrace, look at the line just below
org.apache.wicket.model.IModel.setObject(IModel.java:84)
You will find the cuprit
Exception in thread "main" java.lang.UnsupportedOperationException: Override
this method to support setObject(Object)
at org.apache.wicket.model.IModel.setObject(IModel.java:84)
at
xxx.yyyy.zzz.YourClassUsingThisModel.theMethod(YourClassUsingThisModel.java:12)
François
> Le 30 mai 2020 à 16:13, smallufo <small...@gmail.com> a écrit :
>
> Yes , I know...
> But I hope it will be more informative.
> Because in practice , there may be lots of models , nested panels , forms
> , even in one page...
> Informative error message can make us quickly understand which model needs
> to implement setObject.
> (just like the un-serializable field error message)
>
> Thanks.
>
>
> Francois Meillet <francois.meil...@gmail.com
> <mailto:francois.meil...@gmail.com>> 於 2020年5月30日 週六 下午9:58寫道：
>
>> Hi,
>>
>> Depending on the model you use, you may need to ovveride the setObject()
>> method.
>>
>> from the API docs
>>
>> default void setObject(T object)
>>
>> Throws:
>> UnsupportedOperationException - unless overridden
>>
>>
>>
>> https://ci.apache.org/projects/wicket/apidocs/9.x/org/apache/wicket/model/IModel.html#setObject(T)
>> <
>> https://ci.apache.org/projects/wicket/apidocs/9.x/org/apache/wicket/model/IModel.html#setObject(T)
>>
>> <https://ci.apache.org/projects/wicket/apidocs/9.x/org/apache/wicket/model/IModel.html#setObject(T)>
>>>
>>
>>
>> François
>>
>>
>>
>>> Le 30 mai 2020 à 15:46, smallufo <small...@gmail.com> a écrit :
>>>
>>> Hi
>>> I am building an app with complicated forms , nested models ...
>>> Some times it obsesses me is the UnsupportedOperationException :
>>>
>>> java.lang.UnsupportedOperationException: Override this method to support
>>> setObject(Object)
>>>
>>> at org.apache.wicket.model.IModel.setObject(IModel.java:84)
>>> It doesn't pinpoint me which model , which form , which panel...
>>> very hard to debug...
>>> For non-serializable exception , it can provide meaning information ,
>> even
>>> pinpoint which field causes the problem.
>>> I hope some day , this UnsupportedOperationException can also be so
>>> informative.
>>>
>>> Thanks.
