NullPointerException when filling report due to uninstall clutter

[pawelc]

Hi all,

I have NullPointerException when Preview report using custom adapter (print stack below).

Arguably this may the adapter itself (I dont have the source code) but the fact is that my workmate installed the same versions and it works for him fine.

The only difference being I had some previous version of  JapserStudio installed and uninstalled. That why I reckon it must be some clutter after the previous version not quite cleared.

I will appreciate any comments on this thread please.

Note: I tried to reinstall different versions, running under Administration privileges on my Windows machine, just simply ran out of ideas, please help!

net.sf.jasperreports.engine.JRException: java.lang.NullPointerException
    at com.jaspersoft.studio.editor.preview.view.control.ReportController.fillReport(ReportController.java:551)
    at com.jaspersoft.studio.editor.preview.view.control.ReportController.access$18(ReportController.java:526)
    at com.jaspersoft.studio.editor.preview.view.control.ReportController$1.run(ReportController.java:444)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: java.lang.NullPointerException
    at com.redprairie.moca.jrds.UomConverter.convert(UomConverter.java:46)
    at com.redprairie.moca.jrds.JRMocaQueryExecuter.executeQuery(JRMocaQueryExecuter.java:127)
    at com.redprairie.moca.jrds.JRMocaQueryExecuter.createDatasource(JRMocaQueryExecuter.java:88)
    at net.sf.jasperreports.engine.fill.JRFillDataset.createQueryDatasource(JRFillDataset.java:1257)
    at net.sf.jasperreports.engine.fill.JRFillDataset.initDatasource(JRFillDataset.java:726)
    at net.sf.jasperreports.engine.fill.BaseReportFiller.setParameters(BaseReportFiller.java:457)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:578)
    at net.sf.jasperreports.engine.fill.BaseFillHandle$ReportFill.run(BaseFillHandle.java:135)
    at java.lang.Thread.run(Thread.java:748)

 

[Sad H]

Its not a prevoius version issue, its some sending and getting null in query or paramters, if you share details i could help you little better.

[pawelc]

Thanks for your suggestions. The solution was just about the place you mention.

I was trying different versions of the plugin (Data Adapter) for my data source and they were all corrupted. That is, they were failing with the error print stack above. Ultimately I got a jar that  proved to work, so much time wated on trial and error!

Thanks again for being ready to help.
Pawel.