Hibernate exception in OneToOne mapping

[Rahul Ba]

I am getting weired exception and not able to trace why it so. Please help me here.

I am just using OneToOne mapping with PrimarykeyJoinColumn property.

@Entity
@Table(name="mediashow_user1")
public class UserVO implements Serializable{

	private static final long serialVersionUID = 6066636545309839156L;

	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private Long empid ;
	
	private String email = null;
	private String fname = null ;
	private String lname = null ;
	private String mname = null ;
	private String uname = null ;
	private String passwd = null ;
	private String serctquestion = null ;
	private String serctanswer = null ;
	private int telephone;
	private Timestamp cur_timestamp = null ;
	private Timestamp lastvisited_timestamp = null ;
	
	@OneToOne(cascade=CascadeType.ALL)
	@PrimaryKeyJoinColumn
	private AddressVO addressVO;
	
	
	@Column(name="empid")
	public Long getEmpid() {
		return empid;
	}
        ..................

another AddressVO.java


@Entity
@Table(name="mediashow_address1")
@GenericGenerator(name="foreign", strategy = "foreign", parameters={
  @Parameter(name="property", value="userVO")
})

public class AddressVO implements Serializable {

	
	private static final long serialVersionUID = -96886746528894662L;
	
	@Id
	@GeneratedValue(generator="foreign")
	private Long empid;
	
	private String street = null ;   
	private String zipcode = null ; 
	private String landmark = null ;
        ........
	
}

		Transaction transaction = null;
		try {
			transaction = session.beginTransaction();
			
			AnnotationConfiguration conf = (new AnnotationConfiguration()).configure();
			new SchemaExport(conf).create(true, false);
			
			UserVO user = new UserVO();
			user.setEmail("[e-mail]");
			user.setFname("Rahul10");
			user.setMname("Bapusaheb10");
			user.setLname("Bandgar10");
			
			user.setUname("rahul");
			user.setPasswd("rahul");
			
			user.setSerctanswer("baramati");
			user.setSerctquestion("What is your birth place name?");

			AddressVO address = new AddressVO();
			address.setLandmark("Landmark5");
			address.setStreet("street4");
			address.setZipcode("234344");
			int i = 9850;
			user.setTelephone(i);
			user.setAddressVO(address);
			
			Long id= (Long)session.save(user);
			System.out.println("ID::"+id);

			transaction.commit();
		} catch (HibernateException e) {
			System.out.println("Exception:"+e.getMessage());
			transaction.rollback();
			e.printStackTrace();
		} finally {
			session.close();
		}

and I am getting following exception while running the above code.
alter table mediashow_user1 drop foreign key FK5FD5BCE8801495D drop table if exists mediashow_address1 drop table if exists mediashow_user1 create table mediashow_address1 ( empid bigint not null, landmark varchar(255), street varchar(255), zipcode varchar(255), primary key (empid) ) create table mediashow_user1 ( empid bigint not null auto_increment, cur_timestamp datetime, email varchar(255), fname varchar(255), lastvisited_timestamp datetime, lname varchar(255), mname varchar(255), passwd varchar(255), serctanswer varchar(255), serctquestion varchar(255), telephone integer not null, uname varchar(255), primary key (empid) ) alter table mediashow_user1 add index FK5FD5BCE8801495D (empid), add constraint FK5FD5BCE8801495D foreign key (empid) references mediashow_address1 (empid)
Exception in thread "main" java.lang.NullPointerException
at org.hibernate.tuple.entity.AbstractEntityTuplizer.getPropertyValue(AbstractEntityTuplizer.java:521)
at org.hibernate.persister.entity.AbstractEntityPersister.getPropertyValue(AbstractEntityPersister.java:3867)
at org.hibernate.id.ForeignGenerator.generate(ForeignGenerator.java:100)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:121)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:117)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:685)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:677)
at org.hibernate.engine.CascadingAction$5.cascade(CascadingAction.java:252)
at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:392)
at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:335)
at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:204)
at org.hibernate.engine.Cascade.cascade(Cascade.java:161)
at org.hibernate.event.def.AbstractSaveEventListener.cascadeBeforeSave(AbstractSaveEventListener.java:450)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:282)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:203)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:129)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:713)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:701)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:697)
at com.imgshop.run.TestAddIntoLogin.main(TestAddIntoLogin.java:57)

[vineet bindal]

Hi,

I am facing the same exception. I am guessing that I am missing something in the mapping, hibernate is not able to generate proxy probably?

Were you able to solve it. Please help.