Hello,

I'm getting a "net.sf.hibernate.MappingException: No persister for: java.lang.Integer" exception when trying to insert a new record into any of my tables that have a FK relationship. I'm using Hibernate 2.1 w| Java and Oracle 9i.

Here's an example:

Table: DESTINATION
dest_id - integer(PK)
dest_name - varchar
desc - varchar
directions_id - integer(FK)

Table: DIRECTIONS
directions_id - integer(PK)
directions - varchar2

Destination.hbm.xml:
<class name="DestinationData" table="Destination">
<id name="destId" type="int">
<column name="dest_id"/>
<generator class="sequence">
<param name="sequence">dest_id_sq</param>
</generator>
</id>
<property name="destName">
<column name="dest_name" sql-type="varchar2"/>
</property>
<property name="description">
<column name="description" sql-type="varchar2"/>
</property>
<one-to-one name="directionsId" class="DirectionsData"/>
</class>

Directions.hbm.xml:
<class name="com.cendant.trg.getaways.model.DirectionsData" table="directions">
<id name="directionsId" type="int">
<column name="directions_id" sql-type="integer"/>
<generator class="sequence">
<param name="sequence">directions_id_sq</param>
</generator>
</id>
<property name="directions">
<column name="directions" sql-type="varchar2"/>
</property>
</class>

And finally, the test insert I'm trying to run:
dDAO = new DestinationDAO();
dData = new DestinationData();
dData.setDestName("Fort Lauderdale");
dData.setDescription("Vacation on one of Florida beautiful sunny beaches!");
dDAO.insert(dData); //simply calls hibernate's insert();

Can someone please help me!!! I don't understand why this error is being generated. I've looked through the forums, but haven't found any that identified an answer.

Thanks in advance!

You have a one-to-one relationship between Destination and Direction. However, in your code for creating the Destination object you are specifying the destName and description values but there is no mention of the associated Direction. In the one-to-one relationship you could setup constrained as false or specify the Direction. I have never run into this issue so, I could be wrong.