[jira] [Commented] (MNG-6636) NPE on reporting convertion when inheritance of with no reports

["Hervé Boutemy (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MNG-6636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16816496#comment-16816496 ] 

Hervé Boutemy commented on MNG-6636:
------------------------------------

simply adding "<reports></reports>" aovids the NPE, which is a good basic workaround, but input location tracking is empty, then this NPE proves a deeper and more subtle issue:
{noformat}$ mvn -Dverbose org.apache.maven.plugins:maven-help-plugin:3.2.0-SNAPSHOT:effective-pom
[...}
  <reporting>
    <excludeDefaults>true</excludeDefaults>  <!-- org.apache.maven:maven-site:1.0, line 214 -->
    <outputDirectory>/home/herve/projets/maven/sources/site/target/site</outputDirectory>  <!-- org.apache.maven:maven-site:1.0, line 215 -->
    <plugins>
      <plugin>
        <artifactId>maven-project-info-reports-plugin</artifactId>  <!-- org.apache.maven:maven-site:1.0, line 219 -->
        <reportSets>
          <reportSet>
            <reports>
              <report>index</report>
              <report>summary</report>
              <report>dependency-info</report>
              <report>modules</report>
              <report>team</report>
              <report>scm</report>
              <report>issue-management</report>
              <report>mailing-lists</report>
              <report>dependency-management</report>
              <report>dependencies</report>
              <report>dependency-convergence</report>
              <report>ci-management</report>
              <report>plugin-management</report>
              <report>plugins</report>
              <report>distribution-management</report>
            </reports>
            <configuration>
              <skip>true</skip>  <!-- org.apache.maven:maven-site:1.0, line 223 -->
              <dependencyLocationsEnabled>false</dependencyLocationsEnabled>  <!-- org.apache.maven:maven-parent:34-SNAPSHOT, line 1186 -->
            </configuration>
          </reportSet>
[...]
{noformat}

> NPE on reporting convertion when inheritance of with no reports
> ---------------------------------------------------------------
>
>                 Key: MNG-6636
>                 URL: https://issues.apache.org/jira/browse/MNG-6636
>             Project: Maven
>          Issue Type: Bug
>          Components: Inheritance and Interpolation
>    Affects Versions: 3.6.1
>            Reporter: Hervé Boutemy
>            Priority: Major
>             Fix For: 3.6.2
>
>
> when launching Maven on maven-site:
> {noformat}$ mvn clean
> [INFO] Scanning for projects...
> [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:57)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke (Method.java:606)
>     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.project.DefaultProjectBuilder.build (DefaultProjectBuilder.java:616){noformat}
> caused by the fact that there is no <reports></reports> elements in following reportSet:
> {code:xml}  <reporting>
>     <excludeDefaults>true</excludeDefaults>
>     <outputDirectory>${site.output}</outputDirectory>
>     <plugins>
>       <plugin>
>         <groupId>org.apache.maven.plugins</groupId>
>         <artifactId>maven-project-info-reports-plugin</artifactId>
>         <reportSets>
>           <reportSet><!-- don't execute inherited reports, since some are useless and cannot be removed -->
>             <configuration>
>               <skip>true</skip>
>             </configuration>
>           </reportSet>
> {code}



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