I forgot that calling getFooId() will create the "foo" ASO
and so the workaround will never work...
I guess you could inject SessionScopeManager and call
sessionScopeManager.exists("foo") for another workaround
2009/6/21 Andreas Andreou <andy...@di.uoa.gr>:
> Setting fooId to null DOES remove the object from session, but
> judging from the sources of ApplicationStateManagerImpl (its
> _stateObjects never removes items),
> the stateFlag will continue to return true...
>
> This happens 'cause the map that holdes the ASOs still has the
> "foo" key (that now points to null)
>
> So, the workaround seems to be to add
> boolean isFooReallySelected() {
> return isFooSelected() && getFooId()!=null; }
>
> You could add an issue about this at
> https://issues.apache.org/jira/browse/TAPESTRY,
> https://issues.apache.org/jira/browse/TAPESTRY-912 looks related
>
> On Fri, Jun 19, 2009 at 5:09 PM, <espera...@cumego.com> wrote:
>> Hi!
>> I'm using Tapestry 4.1.
>> How to remove previously created ASO from session, so that @InjectStateFlag
>> could return false again?
>>
>> Sample code (assume that ASO "foo" is already set, so the flag returns
>> TRUE):
>>
>> @InjectState("foo")
>> public abstract Long getFooId();
>> public abstract void setFooId(Long id);
>>
>> @InjectStateFlag("foo")
>> public abstract boolean isFooSelected();
>>
>> // used in form by property selection model with an empty option
>> public abstract Long getSelectedFooId();
>> public abstract void setSelectedFooId(Long id);
>>
>> // called on submit
>> public void changeFoo() {
>> //HERE: how to remove ASO when getSelectedFoo() is null?
>> setFooId(getSelectedFooId()); // setFooId(null) doesn't change flag
>> }
>>
>> Is there a way to do this? Or maybe there is another approach to manage
>> state across pages?
>> Of course, i don't want to invalidate session. :-)
>>
>> Best regards,
>> Przemysław Wojnowski
>>
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>>
>
>
>
> --
> Andreas Andreou - andy...@apache.org - http://blog.andyhot.gr
> Tapestry / Tacos developer
> Open Source / JEE Consulting
>
--
Andreas Andreou - andy...@apache.org - http://blog.andyhot.gr
Tapestry / Tacos developer
Open Source / JEE Consulting
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