hi,
is there any way to mix <subclass> and <joined-subclass> in one mapping file?

i have the following class hierachy:

class item{
...
}

class asset extends item{
...
}


class mobile extends asset{
...
}

now, objects of class item and class asset should be stored in one table. therefore i used the subclass tag.

==== item.hbm.xml=======
...
<class name="Item" table="item" discriminator-value="I">

<id name="id" type="integer" unsaved-value="-1">
<column name="id" sql-type="number" not-null="true" />
<generator class="sequence">
<param name="sequence">item_seq</param>
</generator>
</id>

<discriminator column="classtype" />

<subclass name="Asset" discriminator-value="A">
<property name="sapOrderNumber">
<column name="ordernumber" not-null="false" />
</property>
</subclass-->
...
==============

so this works fine but now i want to store objects of class mobile in another table. this table has a one-to-one assotiation to the item-table. so i think i have to use a joined-subclass.

i tried to put this mapping also in the mapping above but it's not possible to mix subclass and joined-subclass in one mapping.
...
<joined-subclass name="Mobile" table="mobile">
<key column="item_id" />
<property name="serialnumber" column="imei"/>
</joined-subclass>
...

is there another way to manage this problem?

thx for help.

Its not possible in Hibernate 2.1. It is possible in 3.0. See my recent blog entry.

and:

public abstract class Documento{
...
}

public class Proposicao extends Documento{
...
}

public class Veto extends Proposicao{
Proposicao proposicaoPai;
}

I am trying to make one automatic relationship (Proposicao and Veto).
The error message is when i try this:


The error:

(my english is bad.. :))

I forgot post .hbm.xml



Thanks...

i´m not shure which result you expect but if you would load a collection of Proposicao objects I think you have a mistake in your query.

...
session.find("from Proposicao obj order by obj.tipoProposicao");
...

Problem solved, I changed the mapping



Thanks ... :)