I have 2 classes,

An Employee has an Office. A 1 to 1 relationship.

So, after middlegen, hbm2java I ended up with 1 Employee and 1 Office POJO.

Employee e = new Employee();
e.setOffice(new Office());

Then I used the Hibernate session to save Employee. The Employee got created successfully, but the Office did not get created. Is there a way to make Hibernate traveser the object graph or do I have to do the traversal myself? Thanks.

Mapping files:

- <class name="om.Employee" table="Employee" mutable="true" polymorphism="implicit" dynamic-update="false" dynamic-insert="false" batch-size="1" select-before-update="false" optimistic-lock="version">
- <id name="employeeOid" type="java.lang.Integer" column="employeeOid" unsaved-value="null">
<generator class="native" />
</id>
<property name="locale" type="java.lang.String" column="locale" not-null="true" length="64" unique="false" update="true" insert="true" />

<one-to-one name="Office" class="om.Office" outer-join="auto" constrained="false" />
</class>


- <class name="om.Office" table="Office" mutable="true" polymorphism="implicit" dynamic-update="false" dynamic-insert="false" batch-size="1" select-before-update="false" optimistic-lock="version">

- <id name="employeeOid" type="java.lang.Integer" column="employeeOid" unsaved-value="null">
<generator class="native" />
</id>

<one-to-one name="Employee" class="om.Employee" outer-join="auto" constrained="true" />
</class>

set cascade="save-update" or higher on your association.

:-) I set default-cascade="save-update" in <hibernate-mapping> for Employee and...


Caused by: net.sf.hibernate.HibernateException: Batch update row count wrong: 0
at net.sf.hibernate.impl.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:65)
at net.sf.hibernate.impl.BatcherImpl.executeBatch(BatcherImpl.java:122)
at net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2385)

Thanks!!!