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js8523
 Post subject: EJB3 Error Jboss 4.0.3RC1
PostPosted: Tue Jul 12, 2005 11:41 am 
Newbie

Joined: Tue Jul 12, 2005 11:35 am
Posts: 2
Need help with Hibernate? Read this first:
http://www.hibernate.org/ForumMailingli ... AskForHelp

Hibernate version: EJB3 JBoss 4.0.3RC1

Mapping documents:

@Entity(access=AccessType.FIELD)
@NamedQuery(name="region.allRegions", queryString="select r from Region r")
public class Region implements Serializable {

@Transient private static final long serialVersionUID = 1L;

@Id String regionname;
Address HQAddress;

@OneToMany(mappedBy="region", cascade = CascadeType.ALL, fetch=FetchType.EAGER)
Set<Site> sites;

@ManyToOne(cascade = CascadeType.ALL)
Developer company;

public Region(){
HQAddress = new Address();
sites = new HashSet<Site>();
}

public Address getHQAddress() {
return HQAddress;
}

public void setHQAddress(Address address) {
HQAddress = address;
}


public String getRegionname() {
return regionname;
}

public void setRegionname(String regionname) {
this.regionname = regionname;
}

etc ..................
}

[b]Code between sessionFactory.openSession() and session.close():

public Region findRegion(String name){
try {
return (Region) manager.find(Region.class, name);
} catch (EntityNotFoundException ex){
ex.printStackTrace();
return null;
} catch (Exception e){
e.printStackTrace();
// Log error
return null;
}
}


Full stack trace of any exception that occurs:

15:29:05,832 INFO [STDOUT] java.lang.NullPointerException
15:29:05,832 INFO [STDOUT] at org.hibernate.engine.AssociationKey.hashCode(AssociationKey.java:20)
15:29:05,832 INFO [STDOUT] at java.util.HashMap.hash(HashMap.java:264)
15:29:05,832 INFO [STDOUT] at java.util.HashMap.put(HashMap.java:382)
15:29:05,832 INFO [STDOUT] at java.util.HashSet.add(HashSet.java:194)
15:29:05,832 INFO [STDOUT] at org.hibernate.engine.StatefulPersistenceContext.addNullProperty(StatefulPersistenceContext.java:1048)
15:29:05,832 INFO [STDOUT] at org.hibernate.loader.Loader.registerNonExists(Loader.java:878)
15:29:06,863 INFO [STDOUT] at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:548)
15:29:06,863 INFO [STDOUT] at org.hibernate.loader.Loader.doQuery(Loader.java:665)
15:29:06,863 INFO [STDOUT] at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:221)
15:29:06,863 INFO [STDOUT] at org.hibernate.loader.Loader.loadEntity(Loader.java:1610)
15:29:06,863 INFO [STDOUT] at org.hibernate.loader.entity.EntityLoader.load(EntityLoader.java:117)
15:29:06,863 INFO [STDOUT] at org.hibernate.loader.entity.EntityLoader.load(EntityLoader.java:102)
15:29:06,863 INFO [STDOUT] at org.hibernate.persister.entity.BasicEntityPersister.load(BasicEntityPersister.java:2476)
15:29:06,863 INFO [STDOUT] at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:358)
15:29:06,863 INFO [STDOUT] at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:339)
15:29:06,863 INFO [STDOUT] at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:116)
15:29:06,863 INFO [STDOUT] at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:170)
15:29:06,863 INFO [STDOUT] at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:82)
15:29:06,863 INFO [STDOUT] at org.hibernate.impl.SessionImpl.get(SessionImpl.java:627)
15:29:06,863 INFO [STDOUT] at org.hibernate.impl.SessionImpl.get(SessionImpl.java:620)
15:29:06,863 INFO [STDOUT] at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:97)
15:29:06,863 INFO [STDOUT] at org.jboss.ejb3.entity.InjectedEntityManager.find(InjectedEntityManager.java:87)
15:29:06,863 INFO [STDOUT] at com.millwood.Sales.ejb.SitesBean.findRegion(SitesBean.java:43)
15:29:06,863 INFO [STDOUT] at com.millwood.Sales.ejb.SitesBean.createSite(SitesBean.java:132)
15:29:06,863 INFO [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
15:29:06,863 INFO [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
15:29:06,863 INFO [STDOUT] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
15:29:06,863 INFO [STDOUT] at java.lang.reflect.Method.invoke(Method.java:585)
15:29:06,863 INFO [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:99)
15:29:06,863 INFO [STDOUT] at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:33)
15:29:06,863 INFO [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
15:29:06,863 INFO [STDOUT] at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:66)
15:29:06,863 INFO [STDOUT] at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:134)
15:29:06,863 INFO [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
15:29:06,863 INFO [STDOUT] at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:72)
15:29:06,863 INFO [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
15:29:06,863 INFO [STDOUT] at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:39)
15:29:06,863 INFO [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
15:29:06,863 INFO [STDOUT] at org.jboss.aspects.security.RoleBasedAuthorizationInterceptor.invoke(RoleBasedAuthorizationInterceptor.java:152)
15:29:06,863 INFO [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
15:29:06,863 INFO [STDOUT] at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:63)
15:29:06,863 INFO [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
15:29:06,863 INFO [STDOUT] at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:93)
15:29:06,863 INFO [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
15:29:06,863 INFO [STDOUT] at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:183)
15:29:06,863 INFO [STDOUT] at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:107)
15:29:06,863 INFO [STDOUT] at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:69)
15:29:06,863 INFO [STDOUT] at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:325)
15:29:06,863 INFO [STDOUT] at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:201)
15:29:06,863 INFO [STDOUT] at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:259)
15:29:06,863 INFO [STDOUT] at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:313)
15:29:06,863 INFO [STDOUT] at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:147)

Name and version of the database you are using: PostgresSQl 7.4.3



The generated SQL (show_sql=true):

Debug level Hibernate log excerpt:
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emmanuel
 Post subject:
PostPosted: Tue Jul 12, 2005 12:33 pm 
Hibernate Team
Hibernate Team

Joined: Sun Sep 14, 2003 3:54 am
Posts: 7256
Location: Paris, France
Is there any OneToOne association involved somewhere in your graph?

_________________
Emmanuel

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js8523
 Post subject: OneToOne mapping
PostPosted: Wed Jul 13, 2005 7:10 am 
Newbie

Joined: Tue Jul 12, 2005 11:35 am
Posts: 2
Thanks for you reply,

Yes further down the graph there is a object that would be read when reading a region.

A code extract of the object.

public class Property implements Serializable {

/** */
@Transient private static final long serialVersionUID = 1L;

/** The id of the property */
@Id(generate=GeneratorType.IDENTITY)
protected long propertyid;

/** Postal address of the plot */
protected Address address;
/** Detached/ Semi / etc - Also known as property type.*/
protected String houseclass;
/** Size of garden in unit */
protected float gardenarea;

/** The property which the person owns */
@OneToOne(mappedBy = "property", cascade = CascadeType.ALL)
protected Person owner;

/** Default constructor */
public Property(){
address = new Address();
}
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