I am trying to map Account object to Transaction object.

I have a ReferenceId (type:long) field in Transaction which should hold the AccountId

The accountid is the primary key for Account and is of type long.

The mapping for Account is

<one-to-one name="Transaction" class="a.b.Transaction" cascade="save-update" fetch="select" property-ref="ReferenceId" />


When the account object is saved the ReferenceId is always set as 0.


can any one help me figure out why?

Any help or comments would he highly appreciated.

Thanks

Plz post the mapping of the ReferenceId field also.

Mapping For Transaction.

<class name="Transaction" table="Transaction" >
<id name="id">
<generator class="native"/>
</id>
<property name="referenceId" type="int"/>
<property name="name"/>
</class>


Code

In Account

public void setTransaction(Transaction trans) {
trans.setReferenceId(this.id);
this.transaction = trans;
}


Hibernate code

Session session = sessFactory.openSession();

Account a = new Account();

Transaction trans = new Transaction();
trans.setName("First Transaction");

a.setTransaction(trans);

Transaction tx = session.beginTransaction();
session.save(a);
tx.commit();

Here the this.id will be zero only coz both are new objects for which id is not assigned.

Why dont you make referenceId as reference to the Account object. Like:
<many-to-one name="referenceId" class="Account" unique="true"/>

I think it ll work.

I could but I have a specific requirement where the referenceId might not always refer to Account object.

Also why does Hibernate not late resolve the value of referenceId ?
It works with wrapper objects like String , Integer ..

Any ideas ?