Hi,

I have trying a simple onetoone parent child implemetation in hibernate. The relationship is help in the child class with a foreign key to the parent.

My 2 tables as as below :

Deal (t_deal)
-Id
-value date
-creator
-comment

DealDetails(t_deal_details)
-Id
-deal_id //fk to t_deal table
-additional_info

==============================
@Table(name="t_deal")
public class DealBean {
:
:
@Id
@GeneratedValue
public long getId() {
return id;
}

:
@OneToOne(mappedBy="dealBean")
public DealDetailsBean getDealDetailsBean() {
return dealDetailsBean;
}
}
-----------------------------------------------------
@Table(name="t_deal_details")
public class DealDetailsBean {
:
:
@Id
@GeneratedValue
public long getId() {
return id;
}

@GeneratedValue(generator="foreign")
@GenericGenerator(name="foreign", strategy = "foreign", parameters={
@Parameter(name="property", value="t_deal")
})
@Column(name="deal_id")
public long getDealId() {
return dealId;
}

:
:

@OneToOne(cascade=CascadeType.ALL,fetch=FetchType.EAGER)
@JoinColumn(name="deal_id", unique=true)
public DealBean getDealBean() {
return dealBean;
}
========================================

I am not sure of what i am missing, i have seen numerous examples in the net dont know why mine doesnt seem to work.
I am getting the following exception:

org.hibernate.AnnotationException: Unknown mappedBy in: com.xxx.yyy.zzz.reportetl.model.DealBean.dealDetailsBean, referenced property unknown: com.xxx.yyy.zzz.reportetl.model.DealDetailsBean.dealBean
at org.hibernate.cfg.OneToOneSecondPass.doSecondPass(OneToOneSecondPass.java:129)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1127)
at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:329)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1283)
at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867)
at com.xxx.yyy.zzz.reportetl.dao.HibernateSessionManager.getSessionFactory(HibernateSessionManager.java:48)
at com.jpmorgan.eragbat.eblotter.reportetl.DBPopulator.saveDeal(DBPopulator.java:110)
at com.jpmorgan.eragbat.eblotter.reportetl.DBPopulator.populateDatabase(DBPopulator.java:98)
at com.jpmorgan.eragbat.eblotter.tasks.AquaReportMigrationTask.execute(AquaReportMigrationTask.java:18)
at com.jpmorgan.eragbat.util.task.AbstractTask.run(AbstractTask.java:156)
at java.lang.Thread.run(Thread.java:619)


Thanks in advance

I do not really understand, what you are trying to accomplish with these two mappings in DealDetailsBean. At the first sight, I would say they are contradictory as they both use the same name for column (or was that on purpose?).

Cheers ngomo