Hello,

It seems that Hibernate does not allow composite-elements to contain a component. It is not allowed by the XSD schema used for mapping file.

I would like to avoid making the xyz.AssignedCustomerProject an entity if possible. The only solution I can think of is creating a composite user type for the billingRate and map it using the "property" element rather then the "component" element. I do not like this solution though.

Thank you in advance for any hints.
Jan

<!-- customer projects assigned to the company user -->
<bag name="assignedCustomerProjects"
table="rel_company_user_customer_project"
cascade="save-update, delete">

<key column="company_user_id"/>

<composite-element class="xyz.AssignedCustomerProject">
<many-to-one name="customerProject"
class="xyz.CustomerProject"
cascade="none">

<column name="customer_project_id"
not-null="true"/>
</many-to-one>

<!-- PROBLEM HERE - component not allowed here -->
<component name="billingRate"
class="xyz.Rate">

<property name="value"
column="bill_rate_value"
type="double"
not-null="true"/>

<property name="currency"
column="bill_rate_currency_id"
type="integer"
not-null="true"/>
</component>
</composite-element>
</bag>

I actually just ran into this exact same issue today and stumbled upon your post while trying to find a solution.

I think you should be able use a nested-composite-element in place of the component. There is some information in the Hibernate documentation at http://docs.jboss.org/hibernate/core/3.3/reference/en/html/components.html#components-dependentobjects.


Try changing your

to


Hopefully that works!

Thanks for your reply. I eventually solved the problem by creating a composite user type to map xyz.Rate instances. These instances are used at multiple places so I can justify to myself the effort to create and use the user type. So now I have something like this:

<composite-element class="xyz.AssignedCustomerProject">
<many-to-one .../>

<!-- property whose type is xyz.Rate -->
<property name="billingRate"
<!-- composite user type to map xyz.Rate instances onto the two specified table columns -->
type="SL_RATE">
<column name="bill_rate_value"/>
<column name="bill_rate_currency_id"/>
</property>

</composite-element>

Jan