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Re: [udig-devel] Various Rendering Issues
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Thank you Leigh, I will try to make a mapgraphic the exhibits similar
behaviour and test it out.
Jesse
On 4-Dec-07, at 5:12 PM, Leigh Fitzgibbon wrote:
I've just managed to recreate the infinite rendering job bug.
Debugging,
the problem seems to be that in the RenderExecutor.isRendering
method each
executor is asked about their state and I have a MapGraphic object
which
seems to be getting rendered by a RenderExecutorMultiLayer which is
sometimes perpetually returning a state of IRenderer.RENDER_REQUEST.
This is an intermittent problem that occurs during rendering. Our
use case
is that we have a list of locations in another editor that when
selected we
show on a map using a MapGraphic. Our MapGraphic is re-rendered
each time
the selection changes and hence the probability of this intermittent
issue
occurring can be quite high when the user is scrolling through the
list.
It may be the case that this problem is also responsible for the
other issue
I reported a) (map not rendering at all).
Cheers,
Leigh
-----Original Message-----
From: udig-devel-bounces@xxxxxxxxxxxxxxxxxxxxx
[mailto:udig-devel-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Jesse
Eichar
Sent: Monday, 3 December 2007 4:30 PM
To: User-friendly Desktop Internet GIS
Subject: Re: [udig-devel] Various Rendering Issues
I've fixed this bug in the code base and it will be in the next
release. The other issues I've less experience with. Although they
do sound familiar. Do you know of anyway that I can reproduce those
issues? Or maybe a situation that often causes them?
Thanks,
Jesse
On 2-Dec-07, at 7:41 PM, Leigh Fitzgibbon wrote:
Here you go, a stack trace for c):
java.lang.NullPointerException
at
net
.refractions
.udig.project.internal.render.impl.RenderContextImpl.clearIma
ge(RenderContextImpl.java:218)
at
net
.refractions
.udig.project.internal.render.impl.CompositeRendererImpl.refr
eshImage(CompositeRendererImpl.java:228)
at
net
.refractions
.udig.project.internal.render.impl.CompositeRendererImpl.refr
eshImage(CompositeRendererImpl.java:214)
at
net
.refractions
.udig.project.internal.render.impl.RenderExecutorComposite$Co
mpositeRendererJob.incrementalUpdate(RenderExecutorComposite.java:
198)
at
net
.refractions
.udig.project.internal.render.impl.RenderExecutorComposite$Co
mpositeRendererJob.startRendering(RenderExecutorComposite.java:151)
at
net
.refractions
.udig.project.internal.render.impl.RenderJob.run(RenderJob.ja
va:192)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
I achieved this error by opening a map containing a single layer
stored in a
PostgreSQL database and then closing the view as soon as possible.
But from
the look of the stack trace the data source probably doesn't
matter. The
layer is quite large and normally takes about 5 seconds to render.
This
looks like a relatively straightforward bug.
Any ideas for a) or b)?
Re: the company, Vince Darley has been posting to the list
occasionally over
the last couple of years. I've just started posting.
Cheers,
Leigh
-----Original Message-----
From: udig-devel-bounces@xxxxxxxxxxxxxxxxxxxxx
[mailto:udig-devel-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Jody
Garnett
Sent: Monday, 3 December 2007 2:20 PM
To: User-friendly Desktop Internet GIS
Subject: Re: [udig-devel] Various Rendering Issues
Leigh Fitzgibbon wrote:
I don’t have a concrete case here for investigation but I often
observe the following annoyances:
a) UDig map does not render – the map view comes up blank. Hitting
redraw causes the map to draw correctly.
b) UDig "rendering map" job active even when no rendering is
obviously going on (CPU usage is zero).
c) Closing a map view while it is rendering sometimes causes an
error
dialog to pop-up reporting “NullpointerException” but nothing else.
These things don’t go down to well at client demonstrations. L
Fair enought.
We are using UDig 1.1 RC13 with PostgreSQL. Are these problems
normal
or is there something in our environment that is causing trouble?
Nope these would all be bugs; of one flavor or another. can you give
us
some clues as to what was happening when you experienced these
glitches.
I have not heard of your company before; looks like you guys do some
interesting work. If you need anything specific please give us a
call,
and for bugs such as the above let's work though them on the email
list
here and see if we can isolate them.
A couple of questions; are you *just* using PostgreSQL; or were you
working with shapefiles and WMS layers at the same time. Were you
editing at the time (my usual source of redraw difficulties). Out of
all the ones you listed above I am really interested in getting a
stack
trace for (c) above.
Cheers,
Jody
_______________________________________________
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User-friendly Desktop Internet GIS (uDig)
http://udig.refractions.net
http://lists.refractions.net/mailman/listinfo/udig-devel
_______________________________________________
User-friendly Desktop Internet GIS (uDig)
http://udig.refractions.net
http://lists.refractions.net/mailman/listinfo/udig-devel
No virus found in this incoming message.
Checked by AVG Free Edition.
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_______________________________________________
User-friendly Desktop Internet GIS (uDig)
http://udig.refractions.net
http://lists.refractions.net/mailman/listinfo/udig-devel
