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https://issues.apache.org/jira/browse/MNG-6647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16825959#comment-16825959
]
Michael Osipov commented on MNG-6647:
-------------------------------------
[~hboutemy], can you have a look?
> NPE in DefaultReportingConverter
> --------------------------------
>
> Key: MNG-6647
> URL: https://issues.apache.org/jira/browse/MNG-6647
> Project: Maven
> Issue Type: Bug
> Reporter: Mark Derricutt
> Priority: Minor
>
> 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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