wicket serializes the page which contains all the components - so
everything your components hold on to is also serialized. this is why
we have models that can detach - so you can release the heavy state
before the page is serialized, and reacquire it again when needed.
-igor
On Thu, Sep 10, 2009 at 7:59 PM, kingcode <jrom...@gmail.com> wrote:
>
> Thanks Igor for the quick response - I guess this is stating the obvious, but
> I conclude that this is just part of the page/component serialization?
>
> Correct me if I am wrong, but from what I understand the reference to an
> outer scope obj. is a 'field' of the inner class and therefore required to
> be serializable by wicket.
>
> JF
>
>
>
> igor.vaynberg wrote:
>>
>>> add new Link( "addToCart") {
>>> public void onClick() {
>>> getSession().getCart().add( p.getId());
>>> //..etc
>>>
>>
>> your anonymous class keeps a reference to p because inside you
>> reference p via p.getId().
>>
>> -igor
>>
>> On Thu, Sep 10, 2009 at 12:00 PM, J.-F. Rompre <jrom...@gmail.com> wrote:
>>> Hello,
>>>
>>> I would like to know where I could find documentation on the issue of
>>> serializing objects inherited from a component's container as in the
>>> example
>>> below. I tried looking at the wicket source code to see when this occurs
>>> but
>>> still don't understand when/how it is done.
>>>
>>> //...
>>>
>>> final Product p = //get non-serializable Product object
>>>
>>> add new Link( "addToCart") {
>>> public void onClick() {
>>> getSession().getCart().add( p.getId());
>>> //..etc
>>>
>>> The above throws a NotSerializableException. However, no problem occurs
>>> after the code is changed to:
>>>
>>> //...
>>>
>>> //Product p already assigned
>>> final String pId = p.getId() //serializable
>>>
>>> add new Link( "addToCart") {
>>> public void onClick() {
>>> getSession().getCart().add( pId);
>>> //..etc
>>>
>>> (Also, building the Link with a wrapping Model object also works,
>>> obviously)
>>>
>>> However I am curious to know why a non-model object is serialized when
>>> inherited from the container even though within the same request?
>>>
>>> Thanks for any comment,
>>>
>>> JF
>>>
>>
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>>
>
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>
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