I have a mapping file for inheritence mapping - Table per class hierarchy as:

<hibernate-mapping>
<class name="A" table="A_table">
<id column="id" type="long">
<generator class="native"/>
</id>
<discriminator column="disc"/>

<subclass name="B" discriminator-value="B_disc">
</subclass>

<subclass name="C" discriminator-value="C_disc">
<bag name="C_list" table="config_mapping" cascade="all">
<key column="config_id"/>
<many-to-many class="B"
column="mapping_config_id"
unique="true"
not-found="ignore"/>
</bag>
</subclass>

</class>
</hibernate-mapping>


Now i have another mapping file which is as follows:
<hibernate-mapping>
<class name="D" table="D_table">
<id column="id" type="long">
<generator class="native"/>
</id>

<bag name="D_list" table="pf_config" cascade="all">
<key column="pf_id" />
<many-to-many class="B"
column="config_id"
unique="true"
not-found="ignore"/>
</bag>

<bag name="E_list" table="pf_config" cascade="all">
<key column="pf_id" />
<many-to-many class="C"
column="config_id"
unique="true"
not-found="ignore"/>
</bag>

</class>
</hibernate-mapping>

Now when i try to retrieve the list of D_list and E_list in D class i do not get the values only referenced by subclass C or of subclass D based on the discriminator value but instead get the whole set of values of its superclass A in both the lists.

Can anyone tell me why is this happening and the correct way to do it?