[mkgmap-dev] NPE with mkgmap 3320

Thu Nov 6 09:42:03 GMT 2014

Hi Uli,

I am able to reproduce a similar error when I use a TreeMap 
instead of a LinkedHashMap
for RoadDef objects in TableA. I think the problem was introduced with
the merge of the unicode branch (r3076) which
introduced the new encText field in Label and a possible text==null .

  @Steve: 
I am not sure what to do here. A method like City.getName() should
probably used the getEncText() method if getText() returns null?
But getEncText() returns a char[] while getText() returns a String,
so that seems to be inefficient :-(

Gerd

> Date: Wed, 5 Nov 2014 09:56:06 -0800
> From: ulibaer at gmail.com
> To: mkgmap-dev at lists.mkgmap.org.uk
> Subject: Re: [mkgmap-dev] NPE with mkgmap 3320
> 
> Last night this error happened again at the same spot.
> The remedy is still the same: Run only one thread or declare the method
> synchronized.
> 
> I still think, something is not right there...
> 
> java.lang.NullPointerException
>         at uk.me.parabola.imgfmt.app.net.RoadDef.compareTo(RoadDef.java:700)
>         at uk.me.parabola.imgfmt.app.net.RoadDef.compareTo(RoadDef.java:56)
>         at java.util.HashMap.compareComparables(Unknown Source)
>         at java.util.HashMap$TreeNode.treeify(Unknown Source)
>         at java.util.HashMap.treeifyBin(Unknown Source)
>         at java.util.HashMap.putVal(Unknown Source)
>         at java.util.HashMap.put(Unknown Source)
>         at uk.me.parabola.imgfmt.app.net.TableA.addArc(TableA.java:86)
>         at uk.me.parabola.imgfmt.app.net.NOD1Part.addNode(NOD1Part.java:229)
>         at
> uk.me.parabola.imgfmt.app.net.NOD1Part.subdivideHelper(NOD1Part.java:
> 305)
>         at
> uk.me.parabola.imgfmt.app.net.NOD1Part.subdivide(NOD1Part.java:266)
>         at
> uk.me.parabola.imgfmt.app.net.RoadNetwork.splitCenters(RoadNetwork.ja
> va:249)
>         at
> uk.me.parabola.imgfmt.app.net.RoadNetwork.getCenters(RoadNetwork.java
> :256)
>         at
> uk.me.parabola.mkgmap.build.MapBuilder.makeMap(MapBuilder.java:231)
>         at uk.me.parabola.mkgmap.main.MapMaker.makeMap(MapMaker.java:120)
>         at uk.me.parabola.mkgmap.main.MapMaker.makeMap(MapMaker.java:82)
>         at uk.me.parabola.mkgmap.main.Main$1.call(Main.java:253)
>         at uk.me.parabola.mkgmap.main.Main$1.call(Main.java:249)
>         at java.util.concurrent.FutureTask.run(Unknown Source)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
> Source)
>         at java.lang.Thread.run(Unknown Source)
> 
> 
> 
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