[udig-devel] Various Rendering Issues

[Jesse Eichar]

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 at lists.refractions.net
> [mailto:udig-devel-bounces at lists.refractions.net] 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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