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Posted to user@pivot.apache.org by Ashish Dalela <as...@gmail.com> on 2012/04/21 14:00:21 UTC
Error in launching Pivot in a thread
Hi,
I'm a new user, and hope I can find some help here.
I have a MVC application, with each M/V/C run in separate threads. The
Pivot code runs in the View thread, and I see the following error at
startup:
Exception in thread "Thread-6" java.lang.IllegalStateException: this method
can only be called from the AWT event dispatch thread, and not from
"Thread-6"
The error is seen while executing the following code:
<snip>
this.window = (Window)
bxmlSerializer.readObject(getClass().getResource("abc.bxml"));
window.open(this.display);
</snip>
A similar issue seems to have been reported and (apparently) fixed earlier:
https://issues.apache.org/jira/browse/PIVOT-780
I'm wondering if this is regressed, or what is the right version to get
this fix? I'm using 2.0.1.
Thanks for any help,
Regards,
Ashish
RE: Error in launching Pivot in a thread
Posted by Jason Dorsey <Ja...@netiq.com>.
Have your GUI started normally within your MVC app (not within a separate runnable).
When your other threads need to update the GUI use something like this...
public void setStatus(final TestStatus status)
{
this.status = status;
if (label != null)
// This was needed as Java requires all UI updates to be made in
// the main thread
// Otherwise weird things will happen such as updates happening out
// of sync or not at all
// Also had to declare the status parameter as final to be
// accessible to the runnable
ApplicationContext.queueCallback(new Runnable()
{
public void run()
{
// CHANGE THIS HERE TO WHAT YOU NEED TO HAVE RUN
label.setText(status.toString());
setStatusInfo();
}
});
}
This should get you working...
Jason Dorsey | Engineering Intern
1233 West Loop South
Houston, TX 77027 USA
Jason.Dorsey@netiq.com<ma...@attachmate.com>
www.attachmate.com<http://www.attachmate.com/> | www.netiq.com<http://www.netiq.com/>
From: Ashish Dalela [mailto:ashish.dalela@gmail.com]
Sent: Saturday, April 21, 2012 3:04 PM
To: user@pivot.apache.org
Subject: Re: Error in launching Pivot in a thread
Thanks for your responses. With your suggestion, I have partial success. Here is what I did.
Created a Runnable class View that starts a thread. In the run () function for this class, I call the queueCallback () to invoke a StartGUI Runnable instance. This starts the Pivot application alright.
However, when I do a thread.join for the View (and other threads) in main thread the GUI is never rendered. Any suggestions on what maybe wrong?
Ashish
On Sat, Apr 21, 2012 at 10:54 PM, Noel Grandin <no...@gmail.com>> wrote:
You should be using ApplicationContext#queueCallback() to push code
onto the event thread, so that your other threads do not need
to call pivot stuff directly.
On Sat, Apr 21, 2012 at 18:24, Ashish Dalela <as...@gmail.com>> wrote:
>
> The issue is that if I have multiple threads then I have to also be doing
> thread.join for the other threads, which in effect suspends the main thread
> until the other threads exit and makes the window unresponsive.
>
> I thought this is what PIVOT-780 is about, but I might be wrong.
>
> Ashish
>
>
> On Sat, Apr 21, 2012 at 8:53 PM, Noel Grandin <no...@gmail.com>> wrote:
>>
>> You can only call window.open from the event thread, not from other
>> threads.
>>
>>
>> On Sat, Apr 21, 2012 at 14:00, Ashish Dalela <as...@gmail.com>>
>> wrote:
>> > Hi,
>> >
>> > I'm a new user, and hope I can find some help here.
>> >
>> > I have a MVC application, with each M/V/C run in separate threads. The
>> > Pivot
>> > code runs in the View thread, and I see the following error at startup:
>> >
>> > Exception in thread "Thread-6" java.lang.IllegalStateException: this
>> > method
>> > can only be called from the AWT event dispatch thread, and not from
>> > "Thread-6"
>> >
>> > The error is seen while executing the following code:
>> >
>> > <snip>
>> > this.window = (Window)
>> > bxmlSerializer.readObject(getClass().getResource("abc.bxml"));
>> > window.open(this.display);
>> > </snip>
>> >
>> > A similar issue seems to have been reported and (apparently) fixed
>> > earlier: https://issues.apache.org/jira/browse/PIVOT-780
>> >
>> > I'm wondering if this is regressed, or what is the right version to get
>> > this
>> > fix? I'm using 2.0.1.
>> >
>> > Thanks for any help,
>> >
>> > Regards,
>> > Ashish
>
>
Re: Error in launching Pivot in a thread
Posted by Ashish Dalela <as...@gmail.com>.
Thanks for your responses. With your suggestion, I have partial success.
Here is what I did.
Created a Runnable class View that starts a thread. In the run () function
for this class, I call the queueCallback () to invoke a StartGUI Runnable
instance. This starts the Pivot application alright.
However, when I do a thread.join for the View (and other threads) in main
thread the GUI is never rendered. Any suggestions on what maybe wrong?
Ashish
On Sat, Apr 21, 2012 at 10:54 PM, Noel Grandin <no...@gmail.com>wrote:
> You should be using ApplicationContext#queueCallback() to push code
> onto the event thread, so that your other threads do not need
> to call pivot stuff directly.
>
> On Sat, Apr 21, 2012 at 18:24, Ashish Dalela <as...@gmail.com>
> wrote:
> >
> > The issue is that if I have multiple threads then I have to also be doing
> > thread.join for the other threads, which in effect suspends the main
> thread
> > until the other threads exit and makes the window unresponsive.
> >
> > I thought this is what PIVOT-780 is about, but I might be wrong.
> >
> > Ashish
> >
> >
> > On Sat, Apr 21, 2012 at 8:53 PM, Noel Grandin <no...@gmail.com>
> wrote:
> >>
> >> You can only call window.open from the event thread, not from other
> >> threads.
> >>
> >>
> >> On Sat, Apr 21, 2012 at 14:00, Ashish Dalela <as...@gmail.com>
> >> wrote:
> >> > Hi,
> >> >
> >> > I'm a new user, and hope I can find some help here.
> >> >
> >> > I have a MVC application, with each M/V/C run in separate threads. The
> >> > Pivot
> >> > code runs in the View thread, and I see the following error at
> startup:
> >> >
> >> > Exception in thread "Thread-6" java.lang.IllegalStateException: this
> >> > method
> >> > can only be called from the AWT event dispatch thread, and not from
> >> > "Thread-6"
> >> >
> >> > The error is seen while executing the following code:
> >> >
> >> > <snip>
> >> > this.window = (Window)
> >> > bxmlSerializer.readObject(getClass().getResource("abc.bxml"));
> >> > window.open(this.display);
> >> > </snip>
> >> >
> >> > A similar issue seems to have been reported and (apparently) fixed
> >> > earlier: https://issues.apache.org/jira/browse/PIVOT-780
> >> >
> >> > I'm wondering if this is regressed, or what is the right version to
> get
> >> > this
> >> > fix? I'm using 2.0.1.
> >> >
> >> > Thanks for any help,
> >> >
> >> > Regards,
> >> > Ashish
> >
> >
>
Re: Error in launching Pivot in a thread
Posted by Noel Grandin <no...@gmail.com>.
You should be using ApplicationContext#queueCallback() to push code
onto the event thread, so that your other threads do not need
to call pivot stuff directly.
On Sat, Apr 21, 2012 at 18:24, Ashish Dalela <as...@gmail.com> wrote:
>
> The issue is that if I have multiple threads then I have to also be doing
> thread.join for the other threads, which in effect suspends the main thread
> until the other threads exit and makes the window unresponsive.
>
> I thought this is what PIVOT-780 is about, but I might be wrong.
>
> Ashish
>
>
> On Sat, Apr 21, 2012 at 8:53 PM, Noel Grandin <no...@gmail.com> wrote:
>>
>> You can only call window.open from the event thread, not from other
>> threads.
>>
>>
>> On Sat, Apr 21, 2012 at 14:00, Ashish Dalela <as...@gmail.com>
>> wrote:
>> > Hi,
>> >
>> > I'm a new user, and hope I can find some help here.
>> >
>> > I have a MVC application, with each M/V/C run in separate threads. The
>> > Pivot
>> > code runs in the View thread, and I see the following error at startup:
>> >
>> > Exception in thread "Thread-6" java.lang.IllegalStateException: this
>> > method
>> > can only be called from the AWT event dispatch thread, and not from
>> > "Thread-6"
>> >
>> > The error is seen while executing the following code:
>> >
>> > <snip>
>> > this.window = (Window)
>> > bxmlSerializer.readObject(getClass().getResource("abc.bxml"));
>> > window.open(this.display);
>> > </snip>
>> >
>> > A similar issue seems to have been reported and (apparently) fixed
>> > earlier: https://issues.apache.org/jira/browse/PIVOT-780
>> >
>> > I'm wondering if this is regressed, or what is the right version to get
>> > this
>> > fix? I'm using 2.0.1.
>> >
>> > Thanks for any help,
>> >
>> > Regards,
>> > Ashish
>
>
Re: Error in launching Pivot in a thread
Posted by Ashish Dalela <as...@gmail.com>.
The issue is that if I have multiple threads then I have to also be doing
thread.join for the other threads, which in effect suspends the main thread
until the other threads exit and makes the window unresponsive.
I thought this is what PIVOT-780 is about, but I might be wrong.
Ashish
On Sat, Apr 21, 2012 at 8:53 PM, Noel Grandin <no...@gmail.com> wrote:
> You can only call window.open from the event thread, not from other
> threads.
>
>
> On Sat, Apr 21, 2012 at 14:00, Ashish Dalela <as...@gmail.com>
> wrote:
> > Hi,
> >
> > I'm a new user, and hope I can find some help here.
> >
> > I have a MVC application, with each M/V/C run in separate threads. The
> Pivot
> > code runs in the View thread, and I see the following error at startup:
> >
> > Exception in thread "Thread-6" java.lang.IllegalStateException: this
> method
> > can only be called from the AWT event dispatch thread, and not from
> > "Thread-6"
> >
> > The error is seen while executing the following code:
> >
> > <snip>
> > this.window = (Window)
> > bxmlSerializer.readObject(getClass().getResource("abc.bxml"));
> > window.open(this.display);
> > </snip>
> >
> > A similar issue seems to have been reported and (apparently) fixed
> > earlier: https://issues.apache.org/jira/browse/PIVOT-780
> >
> > I'm wondering if this is regressed, or what is the right version to get
> this
> > fix? I'm using 2.0.1.
> >
> > Thanks for any help,
> >
> > Regards,
> > Ashish
>
Re: Error in launching Pivot in a thread
Posted by Noel Grandin <no...@gmail.com>.
You can only call window.open from the event thread, not from other threads.
On Sat, Apr 21, 2012 at 14:00, Ashish Dalela <as...@gmail.com> wrote:
> Hi,
>
> I'm a new user, and hope I can find some help here.
>
> I have a MVC application, with each M/V/C run in separate threads. The Pivot
> code runs in the View thread, and I see the following error at startup:
>
> Exception in thread "Thread-6" java.lang.IllegalStateException: this method
> can only be called from the AWT event dispatch thread, and not from
> "Thread-6"
>
> The error is seen while executing the following code:
>
> <snip>
> this.window = (Window)
> bxmlSerializer.readObject(getClass().getResource("abc.bxml"));
> window.open(this.display);
> </snip>
>
> A similar issue seems to have been reported and (apparently) fixed
> earlier: https://issues.apache.org/jira/browse/PIVOT-780
>
> I'm wondering if this is regressed, or what is the right version to get this
> fix? I'm using 2.0.1.
>
> Thanks for any help,
>
> Regards,
> Ashish