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Posted to issues@maven.apache.org by "Mark Derricutt (JIRA)" <ji...@apache.org> on 2019/04/25 08:00:00 UTC

[jira] [Created] (MNG-6647) NPE in DefaultReportingConverter

Mark Derricutt created MNG-6647:
-----------------------------------

             Summary: NPE in DefaultReportingConverter
                 Key: MNG-6647
                 URL: https://issues.apache.org/jira/browse/MNG-6647
             Project: Maven
          Issue Type: Bug
            Reporter: Mark Derricutt


I discovered this NPE whilst running some integration tests for our tiles-maven-plugin:

 

{{ O] Scanning for projects...}}
{{[INFO] --- tiles-maven-plugin: Injecting 1 tiles as intermediary parent artifacts for com.test:reporting-tiletest...}}
{{[INFO] Mixed 'com.test:reporting-tiletest:0.1.0' with tile 'com.test:reporting-tiletest-tile:0.1.0' as its new parent.}}
{{[INFO] Mixed 'com.test:reporting-tiletest-tile:0.1.0' with original parent '(no parent)' as its new top level parent.}}
{{[INFO] }}
{{[ERROR] Internal error: java.lang.NullPointerException -> [Help 1]}}
{{org.apache.maven.InternalErrorException: Internal error: java.lang.NullPointerException}}
{{ at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:120)}}
{{ at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)}}
{{ at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)}}
{{ at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)}}
{{ at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)}}
{{ at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)}}
{{ at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)}}
{{ at java.lang.reflect.Method.invoke (Method.java:498)}}
{{ at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)}}
{{ at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)}}
{{ at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)}}
{{ at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)}}
{{Caused by: java.lang.NullPointerException}}
{{ at org.apache.maven.model.plugin.DefaultReportingConverter.convert (DefaultReportingConverter.java:243)}}
{{ at org.apache.maven.model.plugin.DefaultReportingConverter.convert (DefaultReportingConverter.java:213)}}
{{ at org.apache.maven.model.plugin.DefaultReportingConverter.convertReporting (DefaultReportingConverter.java:140)}}
{{ at org.apache.maven.model.building.DefaultModelBuilder.build (DefaultModelBuilder.java:479)}}
{{ at org.apache.maven.model.building.DefaultModelBuilder.build (DefaultModelBuilder.java:432)}}
{{ at org.apache.maven.model.building.ModelBuilder$build$0.call (Unknown Source)}}
{{ at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall (CallSiteArray.java:47)}}
{{ at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call (AbstractCallSite.java:116)}}
{{ at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call (AbstractCallSite.java:136)}}
{{ at io.repaint.maven.tiles.TilesMavenLifecycleParticipant.thunkModelBuilder (TilesMavenLifecycleParticipant.groovy:460)}}
{{ at io.repaint.maven.tiles.TilesMavenLifecycleParticipant.orchestrateMerge (TilesMavenLifecycleParticipant.groovy:362)}}
{{ at io.repaint.maven.tiles.TilesMavenLifecycleParticipant.afterProjectsRead (TilesMavenLifecycleParticipant.groovy:306)}}
{{ at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:264)}}
{{ at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)}}
{{ at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)}}
{{ at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)}}
{{ at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)}}
{{ at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)}}
{{ at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)}}
{{ at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)}}
{{ at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)}}
{{ at java.lang.reflect.Method.invoke (Method.java:498)}}
{{ at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)}}
{{ at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)}}
{{ at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)}}
{{ at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)}}

 

This was triggered when running our sitereporting test ( [https://github.com/repaint-io/maven-tiles/tree/master/src/it/sitereporting-tiletest] ) and doesn't trigger an NPE using Apache Maven 3.5.3, but does with the current SNAPSHOT of 3.6.2.

The problem lies when Maven is building the model from [https://github.com/repaint-io/maven-tiles/blob/master/src/it/sitereporting-tiletest/tile-tile/tile.xml#L35] and can be fixed by applying the patch found at [https://www.dropbox.com/s/9gficrmlgxl2jd0/0001-Fix-NPE-thrown-from-DefaultReportingConverter.patch?dl=0] (for some reason I could not attach the patch to the ticket).

 



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