I have a class A with a relation to a BEmbeddable. The BEmbeddable have a @PreUpdate method.
When creating the entity A with B BEmbeddable null, then load save A, it from database (mysql). tries to call the @PreUpdate on B which is still null. Then I set B to null which created B internally to set some values. Then save and get the error below.
Basically the problem is that we try to call the method PreUpdate on a null elemnt element of B.
sun.reflect.NativeMethodAccessorImpl#invoke0
In Debug:
{noformat}
invoke:62, NativeMethodAccessorImpl {sun.reflect}
invoke:43, DelegatingMethodAccessorImpl {sun.reflect}
invoke:498, Method {java.lang.reflect}
performCallback:35, EmbeddableCallback {org.hibernate.jpa.event.internal}
callback:97, CallbackRegistryImpl {org.hibernate.jpa.event.internal}
preCreate:57, CallbackRegistryImpl {org.hibernate.jpa.event.internal}
saveWithGeneratedId:116, AbstractSaveEventListener {org.hibernate.event.internal}
entityIsTransient:192, DefaultPersistEventListener {org.hibernate.event.internal}
onPersist:135, DefaultPersistEventListener {org.hibernate.event.internal}
onPersist:62, DefaultPersistEventListener {org.hibernate.event.internal}
firePersist:800, SessionImpl {org.hibernate.internal}
persist:785, SessionImpl {org.hibernate.internal}
{noformat}
Line 62 is `invoke0(method, obj, args)` with method = @PreUpdate method and obj is null.
Maybe a null check is missing in `performCallback:35, EmbeddableCallback { org.hibernate.jpa.event.internal}`
{ code}
@Override
public boolean performCallback(Object entity) {
try {
Object embeddable = embeddableGetter.get( entity ); // <--- embeddable is null
callbackMethod.invoke( embeddable ); //<-- missing at least null check here?
return true;
}
catch (InvocationTargetException e) {
//keep runtime exceptions as is
if ( e.getTargetException() instanceof RuntimeException ) {
throw (RuntimeException) e.getTargetException();
}
else {
throw new RuntimeException( e.getTargetException() );
}
}
catch (Exception e) {
throw new RuntimeException( e );
}
}
{code}
Printed stack trace:
{noformat}
java.lang.RuntimeException: java.lang.NullPointerException
at org.hibernate.jpa.event.internal.EmbeddableCallback.performCallback(EmbeddableCallback.java:48)
at org.hibernate.jpa.event.internal.CallbackRegistryImpl.callback(CallbackRegistryImpl.java:97)
at org.hibernate.jpa.event.internal.CallbackRegistryImpl.preCreate(CallbackRegistryImpl.java:57)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:116)
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:192)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:135)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:62)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:800)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:785)
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.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:301)
at com.sun.proxy.$Proxy113.persist(Unknown Source)
at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:508)
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.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:515)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:500)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:477)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:56)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:133)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:57)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy152.save(Unknown Source)
{noformat} |
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