Creating a <filter-def/> that has a <filter-param/> with the type attribute set to a custom type fails to correctly define the filter parameter.

i.e.
<hibernate-mapping>
<typedef name="myCustomType" class="com.type.MyCustomType">
<param name="myParam">myValue</param>
</typedef>
<class name="com.models.Category" table="category" schema="public">
...
</class>
<filter-def name="categoryTypeFilter" >
<filter-param name="types" type="myCustomType"/>
</filter-def>
</hibernate-mapping>

I have attached a patch file that was my attempt to fix the problem.