Looking for some help with the exception I'm receiving (net.sf.hibernate.type.SerializationException: could not deserialize) for a joiner table that consists of a single column that serves as the primary key and also foreign-key. The mapper file is attached below. Any suggestions or insight is greatly appreciated.

Thanks,
-Russ-


<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">

<hibernate-mapping>
<class
name="org.lds.grp.ProtectedResourceTypeImpl"
table="GRP_PROTECTED_RESOURCE_TYPE"
proxy="org.lds.grp.ProtectedResourceType"
dynamic-update="true"
dynamic-insert="false"
>


<id
name="controlType"
column="grp_prt_id"
type="org.lds.common.ControlTypeImpl"
>
<generator class="assigned"/>
</id>


<one-to-one
name="controlType"
class="org.lds.common.ControlTypeImpl"
constrained="true"
outer-join="auto"
/>

<set name="protectedResources" lazy="true">
<key column="grp_pr_typeid"/>
<one-to-many class="org.lds.grp.domain.ProtectedResourceDM"/>
</set>
</class>

</hibernate-mapping>