Hi,
I have many-to-one relationship between "Formulae" and the "Model" they belong to. I need to saveOrUpdate() them all in one transaction. I got PropertyValueException while trying to save Formulae (after Model was first saved into the session, but not committed). The Formulae reference in that case into an unsaved transient instance. If I first commit Model to persistent-state, no exceptions are thrown. Is it possible to save them all in one session?

Im using Hibernate3 on Oracle 8.

Exception in thread "main":org.hibernate.PropertyValueException: not-null property references a null or transient value

Thanks
-J

Be sure to put not-null="true" wherever applicable (e.g. the many-to-one relationship). Hibernate uses this value to calculate the order of SQL statements.

Thanks for your quick answer,
I had not-null="true" in Formula's many-to-one reference!

<class name="Formula" table="FORMULA" schema="TEST">
<id name="uniqueid" type="java.math.BigDecimal">
<column name="UNIQUEID" scale="0" />
<generator class="assigned" />
</id>
<many-to-one name="Model" class="Model" fetch="select">
<column name="MODEL" scale="0" not-null="true" />
</many-to-one>


Any other ideas?
-J