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NUllPointerException after updating to 1.0 [message #52600]

Wed, 17 October 2007 09:50

Eclipse User

Hey there.

I just updated from M6 to RAP 1.0. After the update (following the steps
on the RAP homepage), I get the following exception with a formerly
runing project:

17.10.2007 13:34:20 org.mortbay.jetty.servlet.ServletHandler handle
SCHWERWIEGEND: /rap/:
java.lang.NullPointerException
at
org.eclipse.rwt.internal.lifecycle.HtmlResponseWriter.closeE lementIfStarted(HtmlResponseWriter.java:689)
at
org.eclipse.rwt.internal.lifecycle.HtmlResponseWriter.startE lement(HtmlResponseWriter.java:489)
at
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.sendMultipleClientsPerSessionPage(RWTLifeCycleServiceH andlerSync.java:163)
at
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.serviceInternal(RWTLifeCycleServiceHandlerSync.java:75 )
at
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.access$0(RWTLifeCycleServiceHandlerSync.java:48)
at
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync$1.service(RWTLifeCycleServiceHandlerSync.java:43)
at
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleBlockControl$ ServiceHandlerProcessor.run(RWTLifeCycleBlockControl.java:68 )
at
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleThreadPool$Po olRunnable.run(RWTLifeCycleThreadPool.java:38)
at
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleThreadPool$Po olWorker.run(RWTLifeCycleThreadPool.java:66)

Any hints? The website only shows up an internal server error (500)

Greez
Alex

Re: NUllPointerException after updating to 1.0 [message #52626 is a reply to message #52600]

Wed, 17 October 2007 10:13

Eclipse User

Alexander Forschner schrieb:
> Hey there.
>
> I just updated from M6 to RAP 1.0. After the update (following the steps
> on the RAP homepage), I get the following exception with a formerly
> runing project:

The problem is gone, after a fiew restarts of the project. I'll post
here, if the error occurs again.

Greez
Alex

Re: NUllPointerException after updating to 1.0 [message #53300 is a reply to message #52600]

Thu, 18 October 2007 07:14

Eclipse User

We have the same problem. It can be reproduced as follows:
1. Start RAP application
2. Stop server
3. Client notices that the server is unavailable and asks if the query
should be submitted again (Browser-Popup-Box)
4. Start server again
5. Press "retry" in browser
--> Exception in server as Alex wrote. HTTP 500 in browser

For me this looks like a bug. The client should notice that it is a
restarted server and should display a hint that the old session is lost or
something like that.

What do you think?

Regards,
Stefan.

"Alexander Forschner" <alexander.forschner@uni-ulm.de> schrieb im
Newsbeitrag news:ff53up$ohh$1@build.eclipse.org...
> Hey there.
>
> I just updated from M6 to RAP 1.0. After the update (following the steps
> on the RAP homepage), I get the following exception with a formerly runing
> project:
>
> 17.10.2007 13:34:20 org.mortbay.jetty.servlet.ServletHandler handle
> SCHWERWIEGEND: /rap/:
> java.lang.NullPointerException
> at
> org.eclipse.rwt.internal.lifecycle.HtmlResponseWriter.closeE lementIfStarted(HtmlResponseWriter.java:689)
> at
> org.eclipse.rwt.internal.lifecycle.HtmlResponseWriter.startE lement(HtmlResponseWriter.java:489)
> at
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.sendMultipleClientsPerSessionPage(RWTLifeCycleServiceH andlerSync.java:163)
> at
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.serviceInternal(RWTLifeCycleServiceHandlerSync.java:75 )
> at
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.access$0(RWTLifeCycleServiceHandlerSync.java:48)
> at
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync$1.service(RWTLifeCycleServiceHandlerSync.java:43)
> at
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycleBlockControl$ ServiceHandlerProcessor.run(RWTLifeCycleBlockControl.java:68 )
> at
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycleThreadPool$Po olRunnable.run(RWTLifeCycleThreadPool.java:38)
> at
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycleThreadPool$Po olWorker.run(RWTLifeCycleThreadPool.java:66)
>
>
> Any hints? The website only shows up an internal server error (500)
>
> Greez
> Alex

Re: NUllPointerException after updating to 1.0 [message #53327 is a reply to message #53300]

Thu, 18 October 2007 07:31

Eclipse User

schrieb:
> We have the same problem. It can be reproduced as follows:
> 1. Start RAP application
> 2. Stop server
> 3. Client notices that the server is unavailable and asks if the query
> should be submitted again (Browser-Popup-Box)
> 4. Start server again
> 5. Press "retry" in browser
> --> Exception in server as Alex wrote. HTTP 500 in browser

Thanks for that hint. I cannot reproduce the error in this way, if I
wait for the browser to tell me the server is unavailable. If I restart
the server and then reload the page in the browser, this error occurs.

The error occurs most of the times, sometimes, I get the "session
expired" error.

Is this enough information for a bug report?

Greez
Alex

Re: NUllPointerException after updating to 1.0 [message #54210 is a reply to message #53327]

Mon, 22 October 2007 10:50

Eclipse User

Originally posted by: fappel.innoopract.com

Hi,

we've noticed this behaviour also, and yes it is a bug (I created a bugzilla
entry: #207056). But unfortunately there seems to be some difference in
behaviour between FireFox and IE, so we are not sure whether we have already
collected all available possibilties to reproduce the problem. So it would
indeed helpful if you could add any information you've already gathered to
the bug entry.

Ciao
Frank

"Alexander Forschner" <alexander.forschner@uni-ulm.de> schrieb im
Newsbeitrag news:ff7g65$mmu$1@build.eclipse.org...
> schrieb:
>> We have the same problem. It can be reproduced as follows:
>> 1. Start RAP application
>> 2. Stop server
>> 3. Client notices that the server is unavailable and asks if the query
>> should be submitted again (Browser-Popup-Box)
>> 4. Start server again
>> 5. Press "retry" in browser
>> --> Exception in server as Alex wrote. HTTP 500 in browser
>
> Thanks for that hint. I cannot reproduce the error in this way, if I wait
> for the browser to tell me the server is unavailable. If I restart the
> server and then reload the page in the browser, this error occurs.
>
> The error occurs most of the times, sometimes, I get the "session expired"
> error.
>
> Is this enough information for a bug report?
>
> Greez
> Alex

Re: NUllPointerException after updating to 1.0 [message #60497 is a reply to message #54210]

Mon, 19 November 2007 11:37

Eclipse User

Hi,
i confirm this problem under firefox; i try to replicate the bug: this
Nullpointerexception occurs when rap app is in a "standby" mode (in this
period i use other firefox tabs or other applications) and after some
minutes i came back to the rap app.

Christian

Frank Appel ha scritto:
> Hi,
>
> we've noticed this behaviour also, and yes it is a bug (I created a bugzilla
> entry: #207056). But unfortunately there seems to be some difference in
> behaviour between FireFox and IE, so we are not sure whether we have already
> collected all available possibilties to reproduce the problem. So it would
> indeed helpful if you could add any information you've already gathered to
> the bug entry.
>
>
> Ciao
> Frank
>
>
> "Alexander Forschner" <alexander.forschner@uni-ulm.de> schrieb im
> Newsbeitrag news:ff7g65$mmu$1@build.eclipse.org...
>> schrieb:
>>> We have the same problem. It can be reproduced as follows:
>>> 1. Start RAP application
>>> 2. Stop server
>>> 3. Client notices that the server is unavailable and asks if the query
>>> should be submitted again (Browser-Popup-Box)
>>> 4. Start server again
>>> 5. Press "retry" in browser
>>> --> Exception in server as Alex wrote. HTTP 500 in browser
>> Thanks for that hint. I cannot reproduce the error in this way, if I wait
>> for the browser to tell me the server is unavailable. If I restart the
>> server and then reload the page in the browser, this error occurs.
>>
>> The error occurs most of the times, sometimes, I get the "session expired"
>> error.
>>
>> Is this enough information for a bug report?
>>
>> Greez
>> Alex
>
>

Re: NUllPointerException after updating to 1.0 [message #60513 is a reply to message #60497]

Mon, 19 November 2007 11:40

Eclipse User

Hi,

try to reproduce the bug with current CVS. Afaik this should be fixed now.

Greets
Benny

Christian wrote:
> Hi,
> i confirm this problem under firefox; i try to replicate the bug: this
> Nullpointerexception occurs when rap app is in a "standby" mode (in this
> period i use other firefox tabs or other applications) and after some
> minutes i came back to the rap app.
>
> Christian
>
>
>
>
> Frank Appel ha scritto:
>> Hi,
>>
>> we've noticed this behaviour also, and yes it is a bug (I created a bugzilla
>> entry: #207056). But unfortunately there seems to be some difference in
>> behaviour between FireFox and IE, so we are not sure whether we have already
>> collected all available possibilties to reproduce the problem. So it would
>> indeed helpful if you could add any information you've already gathered to
>> the bug entry.
>>
>>
>> Ciao
>> Frank
>>
>>
>> "Alexander Forschner" <alexander.forschner@uni-ulm.de> schrieb im
>> Newsbeitrag news:ff7g65$mmu$1@build.eclipse.org...
>>> schrieb:
>>>> We have the same problem. It can be reproduced as follows:
>>>> 1. Start RAP application
>>>> 2. Stop server
>>>> 3. Client notices that the server is unavailable and asks if the query
>>>> should be submitted again (Browser-Popup-Box)
>>>> 4. Start server again
>>>> 5. Press "retry" in browser
>>>> --> Exception in server as Alex wrote. HTTP 500 in browser
>>> Thanks for that hint. I cannot reproduce the error in this way, if I wait
>>> for the browser to tell me the server is unavailable. If I restart the
>>> server and then reload the page in the browser, this error occurs.
>>>
>>> The error occurs most of the times, sometimes, I get the "session expired"
>>> error.
>>>
>>> Is this enough information for a bug report?
>>>
>>> Greez
>>> Alex
>>

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