1:1 mapping difficulty

[Matt Mastrangelo]

Hi,

I'm having trouble setting up a 1:1 mapping using OJB 0.9.5.  I have two tables: 
"TrackItem" and "Customer".  These tables persist two Java classes by the same name.  
Each TrackItem record contains a CustomerID which references a single customer.  The 
following are excerpts from my repository-user.xml:

<class-descriptor class="track.TrackItem" table="TRACKITEM">
    <field-descriptor id="1" name="id" column="TI_ID" jdbc-type="BIGINT" 
primarykey="true" autoincrement="true" />
    ....
    (other fields)
    ....
    <field-descriptor id="16" name="customerId" column="TI_CUSTID" jdbc-type="BIGINT" 
/>
    <reference-descriptor name="customer" class-ref="track.Customer">
      <foreignkey field-id-ref="16" />
   </reference-descriptor>
</class-descriptor>

<class-descriptor class="track.Customer" table="CUSTOMER">
   <field-descriptor id="1" name="id" column="CS_ID" jdbc-type="BIGINT" 
primarykey="true" autoincrement="true" />
    ....
    (other fields)
    ....
</class-descriptor>

Here are excerpts from the corresponding classes:

public class TrackItem implements Serializable {
    private Long id;
    (other attributes)
    private Long customerID;
    private Customer customer;
    
    public TrackItem() { (no args constructor, sets values to null) }
    public TrackItem(.....) { (constructor with args) }

    public void setId....
    (other sets)
    public void setCustomerID....
    public void setCustomer....

    public Long getId....
    (other gets)
    public Long getCustomerID....
    public Long getCustomer....
}
public class Customer implements Serializable {
    private Long id;
    (other attributes)

    (constructors...)

    (sets & gets)
}

My application starts up fine with this configuration, however, when I attempt to run 
the following query:
    Criteria crit = new Criteria();
    crit.addEqualTo("logby", "Bob");
    Query query = QueryFactory.newQuery(TrackItem.class, crit);
    coll = broker.getCollectionByQuery(query);

... I get: org.apache.ojb.broker.PersistenceBrokerException: Unable to build object 
instance :class track.Customer

[DEFAULT] ERROR: Error in operation [set] of object [PersistentFieldPropertyImpl], 
java.lang.IllegalArgumentException
[DEFAULT] ERROR: Declaring class [track.Customer]
[DEFAULT] ERROR: Property Name [id]
[DEFAULT] ERROR: Property Type [java.lang.Long]
[DEFAULT] ERROR: anObject was class [track.Customer]
[DEFAULT] ERROR: aValue was class [java.lang.String]

I think there must me something wrong with the way my classes are configured.  The 
instructions are not clear to me.  Any advice on this problem would be greatly 
appreciated.

Thanks,

Matt