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What cause org.hibernate.PropertyAccessException: Exception occurred inside setter

Tags:

java

spring

hibernate

jpa

jakarta-ee

What cause this exception, I can't manage to find out.

Request processing failed; nested exception is javax.persistence.PersistenceException: org.hibernate.PropertyAccessException: Exception occurred inside setter of my.Class

Root cause:

javax.persistence.PersistenceException: org.hibernate.PropertyAccessException: Exception occurred inside setter of my.Class

Code:

@ManyToMany(fetch = FetchType.EAGER)
public void setTags(Set<Tags> tags) {
    this.tags.clear();

    for (Tag tag : tags) {
        addTag(tag);
    }
}


public boolean addTag(final Tag tag) {
    if (tags.contains(tag)) {
        return false;
    }

    return tags.add(tag);
}

I initalize tags in the constructor:

tags = new HashSet<Tag>();

EDIT

Exception from logging in setter method:

ax.persistence.PersistenceException: org.hibernate.PropertyAccessException: Exception occurred inside setter of com.mycompany.domain.Book.Tags
    at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1387) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:838) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:781) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:201304051638]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[na:201304051638]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:201304051638]
    at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0]
    at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240) ~[spring-orm-3.1.4.RELEASE.jar:3.1.4.RELEASE]
    at $Proxy215.find(Unknown Source) ~[na:na]
    at com.mycompany.persistence.BookJpaRepository.get(BookJpaRepository.java:22) ~[classes/:na]
    at com.mycompany.service.BookService.getBook(BookService.java:44) ~[classes/:na]
    at com.mycompany.service.BookService$$FastClassByCGLIB$$d6b91ae6.invoke(<generated>) ~[BookService$$FastClassByCGLIB$$d6b91ae6.class:na]
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:698) ~[spring-aop-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) ~[spring-aop-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) ~[spring-tx-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) ~[spring-aop-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:631) ~[spring-aop-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at com.mycompany.service.BookService$$EnhancerByCGLIB$$e6a4e1a3.getBook(<generated>) ~[BookService$$EnhancerByCGLIB$$e6a4e1a3.class:na]
    at com.mycompany.rest.controller.BookController.getFeedbackForBook(BookController.java:106) ~[classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:201304051638]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[na:201304051638]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:201304051638]
    at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0]
    at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219) ~[spring-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) ~[spring-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) ~[spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745) ~[spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686) ~[spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) ~[spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) ~[spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) ~[spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:920) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:816) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:668) [javax.servlet-api.jar:3.0.1]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:801) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:770) [javax.servlet-api.jar:3.0.1]
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550) [web-core.jar:3.1.2.1-SNAPSHOT]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281) [web-core.jar:3.1.2.1-SNAPSHOT]
    at org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:175) [web-core.jar:3.1.2.1-SNAPSHOT]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java) [web-core.jar:3.1.2.1-SNAPSHOT]
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) [web-core.jar:3.1.2.1-SNAPSHOT]
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) [web-core.jar:3.1.2.1-SNAPSHOT]
    at org.apache.catalina.core.StandardHostValve.__invoke(StandardHostValve.java:161) [web-core.jar:3.1.2.1-SNAPSHOT]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java) [web-core.jar:3.1.2.1-SNAPSHOT]
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331) [web-core.jar:3.1.2.1-SNAPSHOT]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) [web-core.jar:3.1.2.1-SNAPSHOT]
    at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317) [kernel.jar:3.1.2.1-SNAPSHOT]
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195) [kernel.jar:3.1.2.1-SNAPSHOT]
    at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860) [grizzly-http.jar:1.9.50]
    at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757) [grizzly-http.jar:1.9.50]
    at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056) [grizzly-http.jar:1.9.50]
    at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229) [grizzly-http.jar:1.9.50]
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) [grizzly-framework.jar:1.9.50]
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) [grizzly-framework.jar:1.9.50]
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) [grizzly-framework.jar:1.9.50]
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) [grizzly-http.jar:1.9.50]
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) [grizzly-framework.jar:1.9.50]
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) [grizzly-framework.jar:1.9.50]
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71) [grizzly-framework.jar:1.9.50]
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) [grizzly-utils.jar:1.9.50]
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) [grizzly-utils.jar:1.9.50]
    at java.lang.Thread.run(Thread.java:722) [na:1.7.0]
Caused by: org.hibernate.PropertyAccessException: Exception occurred inside setter of com.mycompany.domain.Book.Tags
    at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:88) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropertyValues(AbstractEntityTuplizer.java:710) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.tuple.entity.PojoEntityTuplizer.setPropertyValues(PojoEntityTuplizer.java:371) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:4499) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.engine.internal.TwoPhaseLoad.doInitializeEntity(TwoPhaseLoad.java:185) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:137) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:1103) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.loader.Loader.processResultSet(Loader.java:960) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.loader.Loader.doQuery(Loader.java:910) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:341) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:311) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.loader.Loader.loadEntity(Loader.java:2111) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:82) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:72) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3917) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:460) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:429) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:206) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:262) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:150) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1091) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.internal.SessionImpl.access$2000(SessionImpl.java:174) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.load(SessionImpl.java:2473) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.internal.SessionImpl.get(SessionImpl.java:987) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:807) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    ... 61 common frames omitted
Caused by: java.lang.reflect.InvocationTargetException: null
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:201304051638]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[na:201304051638]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:201304051638]
    at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0]
    at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:65) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    ... 85 common frames omitted
Caused by: java.lang.NullPointerException: null
    at org.hibernate.engine.internal.StatefulPersistenceContext.getLoadedCollectionOwnerOrNull(StatefulPersistenceContext.java:859) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.event.spi.AbstractCollectionEvent.getLoadedOwnerOrNull(AbstractCollectionEvent.java:75) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.event.spi.InitializeCollectionEvent.<init>(InitializeCollectionEvent.java:36) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.internal.SessionImpl.initializeCollection(SessionImpl.java:1846) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.collection.internal.AbstractPersistentCollection$4.doWork(AbstractPersistentCollection.java:549) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.collection.internal.AbstractPersistentCollection.withTemporarySessionIfNeeded(AbstractPersistentCollection.java:234) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.collection.internal.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:545) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.collection.internal.AbstractPersistentCollection.read(AbstractPersistentCollection.java:124) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.collection.internal.PersistentSet.iterator(PersistentSet.java:180) ~[hibernate-core-4.2.0.Final.jar:4.2.0.Final]
    at com.mycompany.domain.Book.setTags(Book.java:185) ~[classes/:na]
    ... 90 common frames omitted
like image 752
LuckyLuke Avatar asked Apr 20 '13 20:04

LuckyLuke

4 Answers

My guess is that Hibernate calls your setter with its own implementation of Set (PersistentSet) which implements lazy-loading, and is not initialized yet when the setter is called. Since you call a method on this set, it makes the set load itself while already being in a loading phase, which puts Hibernate in an inconsistent state.

That's why I prefer using field access over property access (i.e. put all the mapping annotations on fields rather than getters). You want to make a copy of the passed set when the method is called by "normal" code, but you don't want to do that when Hibernate itself calls the setter: it completely break lazy-loading.

like image 54
JB Nizet Avatar answered Oct 14 '22 05:10

JB Nizet

From javadoc:

A problem occurred accessing a property of an instance of a persistent class by reflection, or via CGLIB. There are a number of possible underlying causes, including

- failure of a security check
- an exception occurring inside the getter or setter method
- a nullable database column was mapped to a primitive-type property
- the Hibernate type was not castable to the property type (or vice-versa)

I would say, this.tags(field) or tags(parameter) is null, but in order to figure it out, you can print the entire stack-trace, tis would point the root cause.

like image 40
Francisco Spaeth Avatar answered Oct 14 '22 04:10

Francisco Spaeth

You are passing null as argument of method, so for-each construct throws an exception. Use a guard condition and everything goes ok:

@ManyToMany(fetch = FetchType.EAGER)
public void setTags(Set<Tags> tags) {
    this.tags.clear();

    if (tags != null) {
        for (Tag tag : tags) {
            addTag(tag);
        }
    }
}

but I prefer:

@ManyToMany(fetch = FetchType.EAGER)
public void setTags(Set<Tags> tags) {
    this.tags = tags;
}
like image 30
Amir Pashazadeh Avatar answered Oct 14 '22 03:10

Amir Pashazadeh

The easiest way to figure this out is to wrap the internals of setTags in a try catch, and log any exceptions using your logging system of choice.

My first guess is that the tags instance variable is null. I would be very surprised if this wasn't the case, but it should be trivial to verify using a debugger in an integration test

My second guess would be that the argument passed to setTags() is not being initialized correctly, or is null, or is throwing some kind of exception when your for loop attempts to iterate on it.

like image 43
Paul Sanwald Avatar answered Oct 14 '22 04:10

Paul Sanwald
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