Hi All,
I ran into this building [DBCP] but I think it will apply to all components.
Take the DBCP POM and turn on japicmp:
diff --git a/pom.xml b/pom.xml
index 65488de..106c314 100644
--- a/pom.xml
+++ b/pom.xml
@@ -340,7 +340,7 @@
<!-- This is the only way I could find to skip generating this report -->
<!-- Version 0.11.1 throws an exception because it cannot find a Geronimo
class -->
<!-- Version 0.12.0 throws an NullPointerException because it seems Maven
did not inject the report Mojo with any values-->
-<!-- <report>cmp-report</report> -->
+ <report>cmp-report</report>
</reports>
</reportSet>
</reportSets>
Then run:
mvn -Dcommons.japicmp.version=0.12.0 -e site
to get:
[INFO]
------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 02:21 min
[INFO] Finished at: 2018-05-08T18:22:57-06:00
[INFO]
------------------------------------------------------------------------
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-site-plugin:3.7:site (default-site) on
project commons-dbcp2: Error generating
japicmp-maven-plugin:0.12.0:cmp-report report: Failed to generate report:
null: NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
goal org.apache.maven.plugins:maven-site-plugin:3.7:site (default-site) on
project commons-dbcp2: Error generating
japicmp-maven-plugin:0.12.0:cmp-report report
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:213)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:154)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:146)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:117)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:81)
at
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
(SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
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:290)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
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:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch
(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main
(Launcher.java:356)
Caused by: org.apache.maven.plugin.MojoExecutionException: Error generating
japicmp-maven-plugin:0.12.0:cmp-report report
at org.apache.maven.plugins.site.render.SiteMojo.execute
(SiteMojo.java:141)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
(DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:208)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:154)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:146)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:117)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:81)
at
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
(SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
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:290)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
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:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch
(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main
(Launcher.java:356)
Caused by: org.apache.maven.reporting.MavenReportException: Failed to
generate report: null
at japicmp.maven.JApiCmpReport.executeReport (JApiCmpReport.java:96)
at org.apache.maven.reporting.AbstractMavenReport.generate
(AbstractMavenReport.java:255)
at
org.apache.maven.plugins.site.render.ReportDocumentRenderer.renderDocument
(ReportDocumentRenderer.java:230)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render
(DefaultSiteRenderer.java:349)
at org.apache.maven.plugins.site.render.SiteMojo.renderLocale
(SiteMojo.java:184)
at org.apache.maven.plugins.site.render.SiteMojo.execute
(SiteMojo.java:133)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
(DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:208)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:154)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:146)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:117)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:81)
at
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
(SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
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:290)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
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:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch
(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main
(Launcher.java:356)
Caused by: java.lang.NullPointerException
at japicmp.maven.JApiCmpMojo.isPomModuleNeedingSkip
(JApiCmpMojo.java:1243)
at japicmp.maven.JApiCmpMojo.executeWithParameters
(JApiCmpMojo.java:130)
at japicmp.maven.JApiCmpReport.executeReport (JApiCmpReport.java:75)
at org.apache.maven.reporting.AbstractMavenReport.generate
(AbstractMavenReport.java:255)
at
org.apache.maven.plugins.site.render.ReportDocumentRenderer.renderDocument
(ReportDocumentRenderer.java:230)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render
(DefaultSiteRenderer.java:349)
at org.apache.maven.plugins.site.render.SiteMojo.renderLocale
(SiteMojo.java:184)
at org.apache.maven.plugins.site.render.SiteMojo.execute
(SiteMojo.java:133)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
(DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:208)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:154)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:146)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:117)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:81)
at
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
(SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
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:290)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
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:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch
(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main
(Launcher.java:356)
It looks like Maven did not inject any of the ivars in the JApiCmd
reporting Mojo.
If you run with the japicmp plugin version 0.11.1, the you get a different
error for which I've found no workaround.
Thoughts?
Gary
