Hello everybody

during my work with Hibernate 3.0rc1 I discovered the following bug:

when I resolve the many-to-one relationship from a Privilege-Instance to it associated Resource instance, I always get an Instance of type "Resource" whereas a type derived from "Resource" is expected.
I tested the same mapping documents with hibernate 2.1.8 and I get back an object of the correct subclass. Did anybody else experience the same problem with hibernate3? I did not find a bug report for this so far, so could anybody please confirm this behaviour such that I maybe could open a bug report?

Thanks in advance
Dan

Hibernate version:3.0rc1

Mapping documents:
<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">

<hibernate-mapping
>
<class
name="ch.hasware.pmp.server.dom.Privilege"
table="PMP_PRIVILEGE"
>

<id
name="id"
column="OBJECT_ID"
type="java.lang.Long"
>
<generator class="native">
<!--
To add non XDoclet generator parameters, create a file named
hibernate-generator-params-Privilege.xml
containing the additional parameters and place it in your merge dir.
-->
</generator>
</id>

<property
name="action"
type="java.lang.String"
column="ACTION"
/>

<many-to-one
name="resource"
class="ch.hasware.pmp.server.dom.Resource"
cascade="none"
outer-join="auto"
column="RESOURCE_ID"
/>

<set
name="roles"
table="PMP_ROLE_TO_PRIVILEGE"
lazy="false"
cascade="none"
sort="unsorted"
>

<key
column="PRIVILEGE_ID"
>
</key>

<many-to-many
class="ch.hasware.pmp.server.dom.Role"
column="ROLE_ID"
outer-join="auto"
/>

</set>

<set
name="users"
table="PMP_USER_TO_PRIVILEGE"
lazy="false"
cascade="none"
sort="unsorted"
>

<key
column="PRIVILEGE_ID"
>
</key>

<many-to-many
class="ch.hasware.pmp.server.dom.User"
column="USER_ID"
outer-join="auto"
/>

</set>

<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-Privilege.xml
containing the additional properties and place it in your merge dir.
-->

</class>

</hibernate-mapping>
<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">

<hibernate-mapping
>
<class
name="ch.hasware.pmp.server.dom.Resource"
table="PMP_RESOURCE"
>

<id
name="id"
column="OBJECT_ID"
type="java.lang.Long"
>
<generator class="native">
<!--
To add non XDoclet generator parameters, create a file named
hibernate-generator-params-Resource.xml
containing the additional parameters and place it in your merge dir.
-->
</generator>
</id>

<discriminator
column="TYPE"
/>

<property
name="name"
type="java.lang.String"
column="NAME"
length="64"
/>

<set
name="privileges"
lazy="false"
cascade="all-delete-orphan"
sort="unsorted"
order-by="ACTION"
>

<key
column="RESOURCE_ID"
>
</key>

<one-to-many
class="ch.hasware.pmp.server.dom.Privilege"
/>

</set>

<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-Resource.xml
containing the additional properties and place it in your merge dir.
-->
<subclass
name="ch.hasware.pmp.server.dom.UserPool"
discriminator-value="TYPE_USERPOOL"
>

<set
name="users"
lazy="false"
cascade="all-delete-orphan"
sort="unsorted"
order-by="NAME"
>

<key
column="POOL_ID"
>
</key>

<one-to-many
class="ch.hasware.pmp.server.dom.User"
/>

</set>

<set
name="roles"
table="PMP_USERPOOL_TO_ROLE"
lazy="false"
cascade="none"
sort="unsorted"
>

<key
column="USERPOOL_ID"
>
</key>

<many-to-many
class="ch.hasware.pmp.server.dom.Role"
column="ROLE_ID"
outer-join="auto"
/>

</set>

<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-UserPool.xml
containing the additional properties and place it in your merge dir.
-->

</subclass>
<subclass
name="ch.hasware.pmp.server.dom.Folder"
discriminator-value="TYPE_FOLDER"
>

<set
name="sites"
lazy="false"
cascade="all-delete-orphan"
sort="unsorted"
order-by="NAME"
>

<key
column="FOLDER_ID"
>
</key>

<one-to-many
class="ch.hasware.pmp.server.dom.Website"
/>

</set>

<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-Folder.xml
containing the additional properties and place it in your merge dir.
-->

</subclass>
<subclass
name="ch.hasware.pmp.server.dom.Website"
discriminator-value="TYPE_WEBSITE"
>
<property
name="location"
type="java.lang.String"
column="LOCATION"
/>

<set
name="realms"
lazy="false"
cascade="all-delete-orphan"
sort="unsorted"
order-by="NAME"
>

<key
column="WEBSITE_ID"
>
</key>

<one-to-many
class="ch.hasware.pmp.server.dom.Realm"
/>

</set>

<set
name="roles"
lazy="false"
cascade="all-delete-orphan"
sort="unsorted"
order-by="NAME"
>

<key
column="WEBSITE_ID"
>
</key>

<one-to-many
class="ch.hasware.pmp.server.dom.Role"
/>

</set>

<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-Website.xml
containing the additional properties and place it in your merge dir.
-->

</subclass>
<subclass
name="ch.hasware.pmp.server.dom.Realm"
discriminator-value="TYPE_REALM"
>
<property
name="path"
type="java.lang.String"
column="PATH"
/>

<property
name="authTypes"
type="int"
column="AUTH_TYPES"
/>

<many-to-one
name="website"
class="ch.hasware.pmp.server.dom.Website"
cascade="none"
outer-join="auto"
column="WEBSITE_ID"
/>

<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-Realm.xml
containing the additional properties and place it in your merge dir.
-->

</subclass>

</class>

</hibernate-mapping>

Code between sessionFactory.openSession() and session.close():

Full stack trace of any exception that occurs:

Name and version of the database you are using:MySQL 4.1 / Oracle 9.2

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt: