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https://issues.apache.org/jira/browse/MBUILDCACHE-56?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17719640#comment-17719640
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ASF GitHub Bot commented on MBUILDCACHE-56:
-------------------------------------------
olamy merged PR #73:
URL: https://github.com/apache/maven-build-cache-extension/pull/73
> NPE with mojo parameters not declared as fields (prevent any saving of cache)
> -----------------------------------------------------------------------------
>
> Key: MBUILDCACHE-56
> URL: https://issues.apache.org/jira/browse/MBUILDCACHE-56
> Project: Maven Build Cache Extension
> Issue Type: Bug
> Affects Versions: 1.0.0
> Reporter: Olivier Lamy
> Assignee: Olivier Lamy
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.0.1
>
>
> such field from m-enforcer-p
> https://github.com/apache/maven-enforcer/blame/master/maven-enforcer-plugin/src/main/java/org/apache/maven/plugins/enforcer/EnforceMojo.java#L192
> is creating an NPE when trying saving the cache content because there is no
> field but a method!
> This makes the cache extension totally not usable.
> {code}
> java.lang.NullPointerException: Cannot invoke
> "java.lang.reflect.Field.setAccessible(boolean)" because "field" is null
> at org.codehaus.plexus.util.ReflectionUtils.getValueIncludingSuperclasses
> (ReflectionUtils.java:177)
> at org.apache.maven.buildcache.CacheControllerImpl.recordMojoProperties
> (CacheControllerImpl.java:612)
> at org.apache.maven.buildcache.CacheControllerImpl.buildExecutionInfo
> (CacheControllerImpl.java:579)
> at org.apache.maven.buildcache.CacheControllerImpl.save
> (CacheControllerImpl.java:440)
> at org.apache.maven.buildcache.BuildCacheMojosExecutionStrategy.execute
> (BuildCacheMojosExecutionStrategy.java:134)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:160)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:105)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:73)
> at
> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
> (SingleThreadedBuilder.java:53)
> at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
> (LifecycleStarter.java:118)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:260)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:172)
> at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:100)
> at org.apache.maven.cli.MavenCli.execute (MavenCli.java:821)
> at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:270)
> at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
> at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
> at jdk.internal.reflect.NativeMethodAccessorImpl.invoke
> (NativeMethodAccessorImpl.java:77)
> at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke
> (DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke (Method.java:568)
> 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)
> {code}
> Ideally we should check if there is a field and throw IAE in this case.
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