After upgrading org.hibernate.orm:hibernate-jpamodelgen
from 6.3.1.Final
to 6.5.2.Final
(by migrating to Spring Boot 3.3.0
) I get the following NullPointerException
during annotation processing.
[ERROR] Error running Hibernate processor: Cannot invoke "javax.lang.model.element.Element.getAnnotationMirrors()" because "element" is null
[ERROR] java.lang.NullPointerException: Cannot invoke "javax.lang.model.element.Element.getAnnotationMirrors()" because "element" is null
at org.hibernate.processor.util.TypeUtils.getAnnotationMirror(TypeUtils.java:251)
at org.hibernate.processor.util.TypeUtils.hasAnnotation(TypeUtils.java:260)
at org.hibernate.processor.HibernateProcessor.processClasses(HibernateProcessor.java:297)
at org.hibernate.processor.HibernateProcessor.process(HibernateProcessor.java:261)
at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:1023)
at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:939)
at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1267)
at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1382)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1234)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:916)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$doCall$0(JavacTaskImpl.java:104)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.invocationHelper(JavacTaskImpl.java:152)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:100)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:94)
at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:126)
at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:214)
at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:1228)
at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:215)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
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:972)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:293)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:196)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/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)
Debugging shows that the problematic element is a Java module (an instance of com.sun.tools.javac.code.Symbol.ModuleSymbol
). So the call context.getElementUtils().getPackageOf(element)
(org.hibernate.processor.HibernateProcessor.processClasses(RoundEnvironment roundEnvironment):297)
gives null
. The code of com.sun.tools.javac.model.JavacElements
is straightforward.
@DefinedBy(Api.LANGUAGE_MODEL)
public PackageElement getPackageOf(Element e) {
if (e.getKind() == ElementKind.MODULE)
return null;
else
return cast(Symbol.class, e).packge();
}
I use Apache Maven 3.8.4
and maven-compiler-plugin 3.13.0
. My JDK
is the following.
$ java --version
openjdk 17 2021-09-14
OpenJDK Runtime Environment Temurin-17+35 (build 17+35)
OpenJDK 64-Bit Server VM Temurin-17+35 (build 17+35, mixed mode, sharing)
Is it a bug in hibernate-jpamodelgen
or JDK
? Is there some setting to avoid such a problem?
Yury Shafran is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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