Hi,

Confirmed, works perfectly now with my original data.

-Jukka-

Michaël Michaud wrote:

Hi Jukka,

Thanks for reporting, should be fixed in r4837
UnaryUnionOp returns unexpectedly a null for an empty list input (while I was 
expecting an empty geometry as output)

Michaël
Le 08/03/2016 12:54, Rahkonen Jukka (MML) a écrit :
Hi,

I have tried to dissolve features (points) by a common attribute with the new 
Dissolve tool but it gives Null point exception if I have the default 
Union/Merge aggregation selected.

java.lang.NullPointerException
                             at 
org.openjump.core.ui.plugin.tools.aggregate.Aggregators$Union.getResult(Aggregators.java:184)
                             at 
org.openjump.core.ui.plugin.tools.aggregate.Aggregators$Union.getResult(Aggregators.java:163)
                             at 
org.openjump.core.ui.plugin.tools.aggregate.FeatureCollectionAggregator.getAggregatedFeatureCollection(FeatureCollectionAggregator.java:80)
                             at 
org.openjump.core.ui.plugin.tools.Dissolve2PlugIn.run(Dissolve2PlugIn.java:204)
                             at 
com.vividsolutions.jump.workbench.ui.task.TaskMonitorManager$TaskWrapper.run(TaskMonitorManager.java:152)
                             at java.lang.Thread.run(Unknown Source)

Method "Collect" does not through NPE. Both two old Dissolve tools gives result 
without complaints. Should I not use Union/Merge for points or what might be 
the reason for NPE?

Environment:
Version 20160217 snapshot rev.4824
Java 1.7.0_07(amd64)
Windows 7

-Jukka Rahkonen-





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