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Re: [udig-devel] NPE in BasicWMSRenderer2

Thanks for hunting this down. I added an empty and null check to the code; so try it out. Hopefully this fix will work for you.

Emily

Ugo Taddei wrote:
Hello,

Emily Gouge wrote:
Hello Ugo,

I can't reproduce this with our test wms server. Any chance you can share your wms server url?

Unfortunately not. It's behind the firewall. It's not the WMS, as I've tested with a GeoServer 1.6.3, a GS 1.7, a deegree WMS and another WMS.

So I had a look and think I've found the problem (line 223):

 List<Layer> wmsLayers = getWMSLayers();

wmsLayer is empty. Further down:

String requestCRScode = findRequestCRS(wmsLayers, getViewportCRS(), getContext().getMap());

requestCRScode is null and the cause of the exception throw in the next line.

CoordinateReferenceSystem requestCRS = CRS.decode(requestCRScode);

Fix is probably simply
if (wmsLayers.isEmpty()) {
   return;
}

Cheers,

Ugo



Ugo Taddei wrote:
Hello,

after an SVN update, and libs/refresh.xml I get this

!ENTRY net.refractions.udig.catalog.internal.wms 4 0 2008-10-09 09:21:23.536 !MESSAGE GetCapabilities: http://***.***.***.***/***/wms?REQUEST=GetCapabilities&VERSION=1.1.1&SERVICE=WMS
15
net.refractions.udig.project.render.RenderException: java.lang.NullPointerException at net.refractions.udig.render.internal.wms.basic.BasicWMSRenderer2.render(BasicWMSRenderer2.java:316) at net.refractions.udig.render.internal.wms.basic.BasicWMSRenderer2.render(BasicWMSRenderer2.java:161) at net.refractions.udig.project.internal.render.impl.RenderJob.startRendering(RenderJob.java:106) at net.refractions.udig.project.internal.render.impl.RenderJob.run(RenderJob.java:211)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: java.lang.NullPointerException
    at org.geotools.referencing.CRS.decode(CRS.java:419)
!ENTRY net.refractions.udig.render.wms.basic 1 0 2008-10-09 09:21:24.821
!MESSAGE WARNING: WMS Renderer contains no layers.

This happens when udig starts, and a WMS layer is unchecked (in the layers list). When I make the layer visible, the exception goes. This was working yesterday, and appeared after a general update.

Any ideas?

Cheers,

Ugo

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