Mailing-List: contact users-help@myfaces.apache.org; run by ezmlm
Precedence: bulk
Reply-To: "MyFaces Discussion" <users@myfaces.apache.org>
Received-SPF: neutral (athena.apache.org: local policy)
Message-ID: <4821B508.2070803@chello.at>
Date: Wed, 07 May 2008 15:56:24 +0200
From: "simon.kitching@chello.at" <simon.kitching@chello.at>
User-Agent: Thunderbird 2.0.0.0 (X11/20070418)
MIME-Version: 1.0
To: MyFaces Discussion <users@myfaces.apache.org>
Subject: Re: getting java.util.NoSuchElementException occasionally
References: <48206157.8000307@chello.at>
	 <833675.1968.qm@web56103.mail.re3.yahoo.com>
 <bc36a6210805070641l7cd01d2cv4052263f326bfcbf@mail.gmail.com>
In-Reply-To: <bc36a6210805070641l7cd01d2cv4052263f326bfcbf@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

Well, that only "mostly" works with Orchestra. Everything is ok as long
as the user never uses "right-click>open in new tab", or copies/pastes
the complete url.

I expect that the same limitation applies for Seam's conversation
scopes, though I haven't checked.

Regards,
Simon

Andrew Robinson schrieb:
> You could also use conversation scoped beans (Seam or Orchestra). That
> way your beans would be bound to the window and not the session.
>
> Andrew
>
> On 5/7/08, Nitin Deshmukh <deshmukh73@yahoo.com> wrote:
>   
>>
>> --- On Tue, 5/6/08, simon.kitching@chello.at <simon.kitching@chello.at>
>> wrote:
>>
>>     
>>> From: simon.kitching@chello.at <simon.kitching@chello.at>
>>> Subject: Re: getting java.util.NoSuchElementException occasionally
>>> To: "MyFaces Discussion" <users@myfaces.apache.org>
>>> Date: Tuesday, May 6, 2008, 9:47 AM
>>> Nitin Deshmukh schrieb:
>>>       
>>>> Hi All,
>>>>
>>>> I am using MyFaces1.1.5, Tomahawk 1.1.6, ajax4jsf1.1.1
>>>>         
>>> on weblogic 8.1 sp6. Users are sometimes getting
>>> NoSuchElementException. Following is the StackTrace of the
>>> exception. StackTrace doesn't give any information
>>> regarding where in the application is started and hence I
>>> am not able to figure out what action might have caused it.
>>>       
>>>> Any help is appreciated.
>>>>
>>>> Thanks in advance,
>>>> Nitin
>>>>
>>>> ======================================================
>>>> java.util.NoSuchElementException
>>>> 	at
>>>>         
>>> java.util.AbstractList$Itr.next(AbstractList.java:426)
>>>       
>>>> 	at
>>>>         
>> javax.faces.component._FacetsAndChildrenIterator.next(_FacetsAndChildrenIterator.java:56)
>>     
>>>> 	at
>>>>         
>> javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:604)
>>     
>>>> 	at
>>>>         
>> javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:605)
>>     
>>>> 	at
>>>>         
>>> javax.faces.component.UIForm.processDecodes(UIForm.java:56)
>>>       
>>>> 	at
>>>>         
>> javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:605)
>>     
>>>> 	at
>>>>         
>> javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:605)
>>     
>>>> 	at
>>>>         
>>> javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:138)
>>>       
>>>> 	at
>>>>         
>>> org.ajax4jsf.framework.ajax.AjaxViewRoot.access$001(AjaxViewRoot.java:53)
>>>       
>>>> 	at
>>>>         
>> org.ajax4jsf.framework.ajax.AjaxViewRoot$1.invokeRoot(AjaxViewRoot.java:256)
>>     
>>>> 	at
>>>>         
>> org.ajax4jsf.framework.ajax.JsfOneOneInvoker.invokeOnRegionOrRoot(JsfOneOneInvoker.java:53)
>>     
>>>> 	at
>>>>         
>> org.ajax4jsf.framework.ajax.AjaxContext.invokeOnRegionOrRoot(AjaxContext.java:191)
>>     
>>> I wonder if you have the same problem as someone else
>>> posting today. Do
>>> your users happen to have multiple windows open at once, in
>>> which they
>>> are doing simultaneous requests? Perhaps due to some
>>> automatic periodic
>>> ajax request that is configured to execute in each page?
>>>
>>> Regards,
>>> Simon
>>>       
>> Users can open multiple windows, that is possible. But I don't have any
>> automatic ajax requests. I am using ajax on the home page only. But I
>> suppose what you are saying is possible that user is trying to do multiple
>> simultaneous request and that might have caused it.
>> Also, I do have reports that users also get
>> java.util.ConcurrentModificationException occasionally. I wonder if both the
>> exceptions are because of the same reason.. The second exception arises from
>> the action method of a session scoped bean. so, if two threads are trying to
>> modify the list at the same time, it is possible to get this exception.
>> In the second case, I think the only option I see is to make my action
>> method synchronized, or at least to synchronize the block where list is
>> being modified.. Is there any other option for me?
>> and about the first exception, I have no idea where it starts.
>> Thanks,
>> Nitin
>>
>>
>>
>> ____________________________________________________________________________________
>> Be a better friend, newshound, and
>> know-it-all with Yahoo! Mobile.  Try it now.
>> http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
>>
>>     
>
>