Since the solution to @Any and @ManyToAny Associations Fail in Spring Boot 3 is available 
, I decided to update the repository I used to demonstrate that problem. I’ve updated Hibernate from 6.1.7.Final to 6.2.6.Final (and the other packages), ran the HibernatePolymorphApplicationTests and the null pointer exception from the other post was gone!
Unfortunately, it was replaced with another one:
not-null property references a null or transient value : com.example.hibernatepolymorph.entity.PropertyHolder.property
org.hibernate.PropertyValueException: not-null property references a null or transient value : com.example.hibernatepolymorph.entity.PropertyHolder.property
at app//org.hibernate.engine.internal.Nullability.checkNullability(Nullability.java:109)
at app//org.hibernate.engine.internal.Nullability.checkNullability(Nullability.java:54)
at app//org.hibernate.action.internal.AbstractEntityInsertAction.nullifyTransientReferencesIfNotAlready(AbstractEntityInsertAction.java:124)
at app//org.hibernate.action.internal.AbstractEntityInsertAction.makeEntityManaged(AbstractEntityInsertAction.java:133)
at app//org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:299)
at app//org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:272)
at app//org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:259)
at app//org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:376)
at app//org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:277)
at app//org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:180)
at app//org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:136)
at app//org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:175)
at app//org.hibernate.event.internal.DefaultPersistEventListener.persist(DefaultPersistEventListener.java:93)
at app//org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:77)
at app//org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:54)
at app//org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:127)
at app//org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:755)
at app//org.hibernate.internal.SessionImpl.persist(SessionImpl.java:739)
at app//com.example.hibernatepolymorph.HibernatePolymorphApplicationTests.save(HibernatePolymorphApplicationTests.java:122)
at app//com.example.hibernatepolymorph.HibernatePolymorphApplicationTests.createPropertyHolder(HibernatePolymorphApplicationTests.java:60)
at java.base@17.0.2/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base@17.0.2/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base@17.0.2/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base@17.0.2/java.lang.reflect.Method.invoke(Method.java:568)
at app//org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:727)
at app//org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
at app//org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:156)
at app//org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:147)
at app//org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:86)
at app//org.junit.jupiter.engine.execution.InterceptingExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(InterceptingExecutableInvoker.java:103)
at app//org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.lambda$invoke$0(InterceptingExecutableInvoker.java:93)
at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
at app//org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:92)
at app//org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:86)
at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:217)
at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:213)
at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:138)
at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:68)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)
at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at app//org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at java.base@17.0.2/java.util.ArrayList.forEach(ArrayList.java:1511)
at app//org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at app//org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at java.base@17.0.2/java.util.ArrayList.forEach(ArrayList.java:1511)
at app//org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at app//org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at app//org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
at app//org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at app//org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
at app//org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)
at app//org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
at app//org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
at app//org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
at app//org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
at app//org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)
at app//org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)
at app//org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)
at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:110)
at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:90)
at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:85)
at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:62)
at java.base@17.0.2/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base@17.0.2/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base@17.0.2/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base@17.0.2/java.lang.reflect.Method.invoke(Method.java:568)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
at jdk.proxy1/jdk.proxy1.$Proxy2.stop(Unknown Source)
at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)
at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113)
at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65)
at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)
It dies at the save method here:
PropertyHolder namePropertyHolder = new PropertyHolder();
namePropertyHolder.setId(1L);
save(namePropertyHolder);
System.out.printf("Created: %s%n", namePropertyHolder);
...
void save(Object object) {
EntityTransaction transaction = entityManager.getTransaction();
transaction.begin();
entityManager.persist(object);
transaction.commit();
}
If you look at the definition for PropertyHolder.property, you’ll see null values should be allowed:
@Any
@AnyDiscriminator(DiscriminatorType.STRING)
@AnyDiscriminatorValue(discriminator = "S", entity = StringProperty.class)
@AnyDiscriminatorValue(discriminator = "I", entity = IntegerProperty.class)
@AnyKeyJavaClass(Long.class)
@Column(name = "property_type")
@JoinColumn(name = "property_id")
private Property<?> property;
The exception persists even if I apply the defaults here:
@Any(optional = true)
@AnyDiscriminator(DiscriminatorType.STRING)
@AnyDiscriminatorValue(discriminator = "S", entity = StringProperty.class)
@AnyDiscriminatorValue(discriminator = "I", entity = IntegerProperty.class)
@AnyKeyJavaClass(Long.class)
@Column(name = "property_type", nullable = true)
@JoinColumn(name = "property_id", nullable = true)
private Property<?> property;
If I change the test to populate the property field prior to persisting, the test succeeds:
PropertyHolder namePropertyHolder = new PropertyHolder();
namePropertyHolder.setId(1L);
namePropertyHolder.setProperty(nameProperty);
save(namePropertyHolder);
System.out.printf("Created: %s%n", namePropertyHolder);
I feel like the not-null property references a null or transient value exception above is incorrect here.